CN109797937B - building floor structure - Google Patents

Abstract

The invention relates to a floor structure for a house, which comprises main beams connected end to end, first switching assemblies for connecting the main beams, auxiliary beams arranged between the main beams in the longitudinal direction and base plates arranged on the auxiliary beams in the transverse direction, wherein the auxiliary beams divide the area surrounded by the main beams into a plurality of loading grooves at intervals; the utility model discloses a floor board, including base plate, girder and auxiliary girder, the base plate upper surface is fixed with and is distributed about and supplies the reinforcing bar to arrange the direction and wear to establish along auxiliary girder length direction along the auxiliary girder first carrier block, base plate, girder and auxiliary girder coat have reinforced concrete layer, have the structural strength height on floor, anti deformation strength is good, the anti fracture ability of antidetonation is strong advantage.

Description

building floor structure

technical field

The invention relates to the field of house construction, in particular to a floor structure for house construction.

Background technique

The floor structure of house construction is a common support structure in the field of house construction and one of the main structures of house construction.

For example, the Chinese patent house building floor structure with the authorization announcement number CN205077812U discloses that it includes a reinforced concrete layer, the top of the reinforced concrete layer is provided with a coaming plate, and a placement cavity is arranged in the central part of the coaming plate, and the placement cavity is provided with floor heating, and the enclosure is provided with floor heating. The top of the board is provided with a base layer; the top of the enclosure is provided with a ring-shaped clamping slot, and the bottom end of the base layer is provided with an annular clamping block, the clamping block and the clamping groove are clamped and matched; and a fixed layer is also provided, and the central part of the fixed layer is provided with a ring-shaped clamping block. The fixing slot is provided with a plurality of groups of partitions in the fixing slot to separate the fixing slot into a plurality of sub-slots; it also includes an upper bracket, a sleeve and a lower bracket, which support the fixing layer and separate the base layer and the fixing layer.

The disadvantage of the existing technology is that the correlation between the floor and the load-bearing structure of the building itself is poor. In the event of an earthquake, even if the load-bearing structure remains stable, it may collapse due to factors such as bending and fracture, and the seismic performance is relatively high. Difference.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a building floor structure with the advantages of high structural strength and strong seismic resistance.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A building floor structure, comprising a main beam connected end to end, a first transition component connecting the main beam and the main beam, auxiliary beams arranged longitudinally between the main beams, and horizontally arranged on the auxiliary beams. The base plate, the auxiliary beam divides the area surrounded by the main beam into a plurality of carrier grooves, the base plate is partially concave and embedded in the support groove, and is partially erected on the auxiliary beam and the main beam. The ends are respectively provided with a first buckle unit and a second buckle unit that are buckled with each other; the upper surface of the base plate is fixed with a first load carrier that is distributed up and down for the steel bars to pass along the arrangement direction of the auxiliary beam and along the length direction of the auxiliary beam. The base plate, the main beam and the auxiliary beam are covered with a reinforced concrete layer.

By adopting the above technical solution, the main beam and the auxiliary beam are surrounded to form a basic frame, the base plate fills the vacant part of the frame, and plays a limiting role on the main beam and the auxiliary beam, and the docking of the first buckle unit and the second buckle unit makes the base plate It can be laid in sections and can be docked and fixed across the upper surface of the auxiliary beam, and form a concave-convex base slab along the direction of the auxiliary beam. It is twisted and separated under vibration or load-bearing environment, and due to the connection between the carrier plate and the steel bar, it has extremely high bending resistance along the length direction after concrete injection, so as to disperse part of the load of the auxiliary beam, and the auxiliary beam is also affected by the increase in the length direction. The bending resistance of the auxiliary beam and the main beam also forms a bending resistance auxiliary force; and through the first transition, the main beam can be directly connected to the load-bearing structure of the building, and the main beam can also be used as a load-bearing structure. part of the structure. In this way, the structural correlation effect between the floor and the load-bearing structure is effectively improved, the structural strength and deformation resistance of the floor are also improved, and the floor has good seismic resistance.

The present invention is further provided that: partitions are fixed to the auxiliary beam and the main beam at intervals along the length direction, the base plate is set up in the area formed between the partitions at intervals, and the groove formed by the base plate is recessed along the direction of the auxiliary beam. The length direction is provided with a second carrier block for the steel bar to pass through, and the reinforced concrete layer is partially embedded in the space between the base plates.

By adopting the above technical solution, the base plate is divided into a plurality of units, the limit of the base plate in the length direction of the auxiliary beam is increased, and a compression-resistant spacer is formed between the base plates, which reduces the ductility of the assembly along the base plate and improves the assembly. The structure strength is high, and the short-distance deformation is formed at intervals, so that it can have elastic shock absorption with limited deformation during the earthquake process, and has excellent mechanical stability while shock absorption.

The present invention further provides that: the first fastening unit includes a first connecting plate and a first limiting plate protruding from the lower surface of the base plate; the second fastening unit includes a first connecting plate away from the first connecting plate. A second connecting plate abutting on the surface of one side of the limiting plate, a second limiting plate abutting with the surface of the first limiting plate on the side away from the first connecting plate, and connecting the second connecting plate and the second limiting plate The connecting plate of the positioning plate, the second connecting plate is fixed with the base plate; the shock-absorbing ball is hung in the cavity formed by the first buckled unit and the second buckled unit.

By adopting the above technical solution, the two buckle units form a U-shaped or similar U-shaped structure that is opposite to each other and can be embedded with each other, and this accommodating structure is equivalent to forming two pressure resistance structures and a balanced upper and lower pressure bearing structure on the side surface; In addition, this structure forms a spaced up and down oriented laminated structure that can be slightly bent, which improves the attenuation of shock waves and improves the seismic resistance of the floor. The shock ball is in a suspended state, which can strengthen the shock absorption effect.

The present invention is further provided that: the base plate is protruded inwardly close to the inner surface of the first limit plate, and the protruding part forms a first compensation groove between the first limit plate and the second limit plate. One end of the second limiting plate is curved in an arc shape, and one end of the second limiting plate is in conflict with one of the inner surfaces of the first compensation groove.

By adopting the above technical solution, after the assembly is complete, the elastic deformation of the first limit plate and the second limit plate is limited due to the restriction of the first compensation groove, so that the skeleton can maintain a good shape when subjected to a strong external force. Stability, and the single-sided conflict leaves a certain reserved space for its deformation, so that it cannot be assembled normally; and after the assembly is completed, a certain amount of deformation is formed for the two buckle units to form pin shock deformation, And make the corresponding base plate and base form a slight displacement or deflection to resist shock.

The present invention is further provided that: the inner wall of the second limit plate is protruded with a second limit tab, and the first limit plate is provided with a second limit that cooperates with the second limit tab A card slot, and a guide structure is provided at the first contact portion of the second limit card protrusion and the first limit plate.

By adopting the above technical solution, the elastic avoidance between the second limit plate and the first limit plate is used to cooperate with the guide structure of the second limit clip to complete the smooth assembly. After the assembly is completed, due to the lack of guidance, the excellent structure can be maintained. connection strength.

The present invention further provides that: the first adapter assembly includes a base, a wing laterally protruding from the base, a top plate parallel to the surface of the wing, and a clamping member, the top plate being fixed on the base and connected to the base and the wings A mounting cavity is formed together, and one side of the wing portion and the top plate located in the mounting cavity is protruded with a first limit locking protrusion, and the part of the limit locking protrusion that first contacts with the main beam is provided with a guide structure; the The end of the main beam is embedded in the installation cavity and is provided with a first limit card slot for the first limit card protrusion to be embedded; the clamping pieces are pressed against both sides of the main beam, surround and abut against the top of the top plate , and fixed with the wing.

By adopting the above technical solution, the first transition component can be fixed to a column or other load-bearing part and used as a transition structure between beams, wherein the wings serve as the bottom support of the main beam and provide the main load-bearing support; The beam expands and contracts along the length direction or the displacement caused by external factors tends to be stressed by the first limit card protrusion and the first limit card slot. When assembled with each other, the first limit card protrusion can be through its own elastic deformation, The deformation of the main beam and the elastic bending of the top plate can achieve the avoidance between the main beam and the main beam, and complete the installation along the guide. Tighten to complete the restriction on the torsion trend of the main beam and the movement trend in the direction of elongation; thus quickly complete the assembly between the main beams, and reduce the direct support provided by the fixed part; achieve high installation efficiency and stress concentration The effect of fewer points improves the load capacity and service life of the beam; on this basis, since the first limit clip is deformed and guided when the main beam is inserted into the first adapter, the main beam and the first rotating When the joints are close to each other, there can be a certain deformation and displacement, but the separation of the two will be limited, and the stability of the column and beam structure connection will be maintained while providing deformation resistance.

The present invention is further provided that: the main beam includes two parallel display plates and a web plate arranged between the two display plates, and a weight-reducing groove is formed between the display plates and the web plates, and the first limit card The groove is arranged on the display board; the clamping member includes clamping units symmetrically distributed on both sides of the main beam, and the middle part of the clamping unit protrudes toward the weight-reducing groove and forms a connecting part embedded in the weight-reducing groove, so The bottom of the clamping unit is perpendicular to the hook portion on the side of the wing portion; the connecting portion is provided with a first waist-shaped groove extending along the length direction of the main beam, and the web is provided with a first waist-shaped groove. For the second waist-shaped groove corresponding to the groove, a blocking portion is protruded from the side surface of the wing portion, and the bottom surface of the blocking portion is pressed against.

By adopting the above technical solution, the display board and the web form an I-shaped structure, such as I-beam, to improve the bending resistance, and the display board itself also forms an elastic structure for the first limit clip to escape, and the clamping pieces pass through respectively. Pressing up and down tightly not only realizes further fixing between the top plate and the wing part, but also makes the two tightly press against the main beam, preventing the main beam from breaking away from the first limit clip. The hook part and the blocking part are also clamped with the bolt connection between the two clamping units. The clamping unit can be two independent parts, or the two parts connected at the top can be embedded in the vertical structure before installing the main beam. The first switching component.

The present invention is further provided that: a side of the base located in the installation cavity is protruded and provided with a convex column whose axis is perpendicular to the length direction of the main beam and parallel to the top, and the convex column is provided with a stabilizer for the web to be embedded. groove.

By adopting the above technical solution, the stabilizing groove can limit the shaking of the end of the main beam, and the convex column can overcome the problem of different spacing between display boards of different specifications on the one hand, and on the other hand, it can also avoid the damage to the base structure and keep the base relatively small. High structural strength.

The present invention is further provided as follows: the first limiting protrusion includes a first guide protrusion and a first limit protrusion that are perpendicular to each other, wherein the first guide protrusion is located at the first limit protrusion close to the main beam and the installation cavity The side that is in contact for the first time during installation, and the protruding heights of the first guide rib and the first limit rib relative to the surface where the first limit clip is located gradually decrease from the intersection of the two to their respective ends. Small; the top of the intersecting end of the first guide rib and the first limit rib is flush with the top of the first limit rib, and the first limit rib faces the side of the first guide rib It is a guide surface, and the other side and both sides of the first guide rib are both perpendicular to the surface on which the first limit locking protrusion is located. .

By adopting the above technical solution, in the process of sliding in the main beam along the surface of the top plate, the first guiding ridges first contact the outer wall of the main beam, and elastically deform each other on the surface to form avoidance; The guiding ridges form a smooth concave surface at the center. Before the first limiting ridges abut the surface of the main beam, the surface of the main beam has been pre-deformed, and the first limiting ridges can be further deformed relatively smoothly. , until the first limit rib is matched with the first limit slot, the deformed part is reset; after the matching, due to the lack of guiding pre-deformation during the outward separation of the main beam, it is difficult for them to separate from each other; The rapid installation of the main beam and the sufficient guarantee of the connection stability between the main beam and the installation cavity.

The present invention is further provided that: the end of the auxiliary beam is provided with a joint, the joint includes a Z-shaped head and a receiving plate fixed to one end of the head by screws, the head abuts against the main beam On the top and one side, the receiving plate abuts on the other side of the main beam, and the auxiliary beam is fixed to the Z-shaped middle part of the head.

By adopting the above technical solution, the head and the connecting plate form an inverted U-shaped structure, which can stably complete the docking with the main beam, and its separate structure can be used for main beams of different specifications; the Z-shaped external part can be an auxiliary beam Improve good secondary support.

To sum up, the present invention has the following beneficial effects:

1. Effectively improve the structural correlation effect between the floor and the load-bearing structure, and also improve the structural strength and deformation resistance of the floor, with good earthquake resistance;

2. A compressive spacer is formed between the substrates to form spaced short-distance deformation, so as to have elastic shock absorption with limited deformation during the earthquake process, and excellent structural stability while shock absorption.

Description of drawings

Fig. 1 is the structural drawing of the floor of embodiment 1 taking out reinforced concrete layer;

Fig. 2 is the enlarged view of Fig. 1 of embodiment 1 at A;

3 is a structural diagram of the first adapter assembly of Embodiment 1;

Fig. 4 is the enlarged view of Fig. 3 of embodiment 1 at B;

Fig. 5 is the structure diagram of the clamping member of embodiment 1;

FIG. 6 is a structural diagram of the second adapter assembly of Embodiment 1. FIG.

In the figure, 1, the main beam; 2, the first adapter assembly; 3, the auxiliary beam; 4, the base plate; ; 11, exhibition board; 12, web; 13, weight reduction slot; 14, first limit slot; 15, second waist slot; 21, base; 211, fixed unit; 212, fixed column; 213, reinforcement part; 214, fixing hole; 22, wing part; 221, blocking part; 23, top plate; 24, clamping part; 241, hook part; 242, connecting part; 243, first waist groove; 244, fixing plate; 25, convex column; 251, stabilization groove; 26, first reinforcing plate; 27, installation cavity; 28, first limit clip; 281, first guide ridge; 282, first limit ridge; 31, joint; 311, head; 312, receiving plate; 41, first carrier block; 42, second carrier block; 71, first connecting plate; 72, first limit plate; 73, first compensation groove; 81, 82, the second limit plate; 83, the connecting plate; 84, the damping ball; 85, the second limit clip; 851, the second guide ridge; 852, the second limit ridge.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1: A building floor structure, as shown in Figures 1 and 2, includes a main beam 1 connected end to end, a first adapter component 2 connecting the main beam 1 and the main beam 1, the longitudinal arrangement and The auxiliary beam 3 between the main beams 1 and the substrate 4 arranged on the auxiliary beam 3 horizontally. The auxiliary beam 3 divides the area surrounded by the main beam 1 into a plurality of carrier grooves 5. Partitions 6 are fixed at intervals in the longitudinal direction.

The base plate 4 is erected at intervals in the area formed between the partitions 6, the base plate 4 is partially concave and embedded in the carrier groove 5, and part is erected on the auxiliary beam 3 and the main beam 1, and the base plate 4 is higher than the upper surface of the auxiliary beam 3. The first carrier block 41 , the first carrier block 41 is provided with holes that are distributed up and down for the steel bars to pass through along the arrangement direction of the auxiliary beam 3 and along the length direction of the auxiliary beam 3 . A second carrier block 42 for the steel bar to pass through is provided in the groove formed by the concave base plate 4 along the length direction of the auxiliary beam 3 . The two ends of the adjacent substrates 4 are respectively provided with a first buckle unit 7 and a second buckle unit 8 which are buckled with each other. According to different installation positions, the distribution of the two buckle units on the substrate 4 is also different. The base plate 4 , the main beam 1 and the auxiliary beam 3 are covered with a reinforced concrete layer, and the reinforced concrete layer is partially embedded in the space between the base plates 4 .

The first buckling unit 7 includes a first connecting plate 71 and a first limiting plate 72 protruding from the lower surface of the base plate 4 . The base plate 4 is protruded inwardly near the inner surface of the first limiting plate 72 , and A first compensation groove 73 is formed between the protruding portion and the first limiting plate 72 . The second fastening unit 8 includes a second connecting plate 81 abutting on the surface of the first connecting plate 71 on the side away from the first limiting plate 72 , and a second connecting plate 81 abutting on the side of the first limiting plate 72 away from the first connecting plate 71 . The second limiting plate 82 abutting on the surface and the connecting plate 83 connecting the second connecting plate 81 and the second limiting plate 82 . The second connecting plate 81 is fixed on the base plate 4 , one end of the second limiting plate 82 is curved in an arc shape, and one end of the second limiting plate 82 collides with one of the inner surfaces of the first compensation groove 73 . A shock-absorbing ball 84 is hung in the cavity formed by the buckling of the first fastening unit 7 and the second fastening unit 8, and the cavity can also be used as a channel for heating and wiring. The inner wall of the second limiting plate 82 is protruded with a second limiting locking protrusion 85 , and the first limiting plate 72 is provided with a second limiting locking groove that cooperates with the second limiting locking protrusion 85 . The second limit protrusion 85 includes a second guide protrusion 851 and a second limit protrusion 852 that are perpendicular to each other, wherein 851 is located at the second limit protrusion 852 [M1], close to the first limit plate 72 and the first limit The side that the positioning plate 72 contacts for the first time during installation, and the protruding heights of the second guiding ribs 851 and the second limiting ribs 852 relative to the surface where the second limiting snap 85 is located are from the intersection of the two to The respective ends are gradually reduced.

Referring to FIG. 3 , the main beam 1 includes two parallel display plates 11 and a web 12 arranged between the two display plates 11 . A weight-reducing groove 13 is formed between the display plates 11 and the webs 12 . The display plates 11 and the webs 12 Form an I-shaped structure. The outer surface of the display board 11 is provided with a first limit slot 14 . The web 12 is provided with a second waist-shaped groove 15 extending along the length direction of the main beam 1 .

The first adapter assembly 2 includes a base portion 21 , a wing portion 22 laterally protruding from the base portion 21 , a top plate 23 parallel to the surface of the wing portion 22 , and a clamping member 24 . The axis is perpendicular to the length direction of the main beam 1 and is parallel to the convex column 25 at the top. The convex column 25 is provided with a stable groove 251 for embedding the web 12 . The side projection of the wing portion 22 is generally a triangular structure, and a blocking portion 221 is protruded on the side surface.

Referring to FIGS. 3 and 4 , the top plate 23 is fixed to the base portion 21 and a first reinforcing plate 27 is fixed between the top plate 23 and the base portion 21 . The top plate 23 , the base portion 21 and the wing portion 22 together form an installation cavity 27 . One side of the wing portion 22 and the top plate 23 located in the installation cavity 27 is protruded and provided with a first limit locking protrusion 28 that cooperates with the first limit locking groove 14. The guide rib 281 and the first limit rib 282, wherein the first guide rib 281 is located on the side of the first limit rib 282 close to the first contact between the main beam 1 and the installation cavity 27 during installation, and the first guide rib The protruding heights of the rib 281 and the first limiting protruding rib 282 relative to the surface on which the first limiting snap 28 is located gradually decrease from the position where the two intersect to the respective ends. The top of the intersecting end of the first guide rib 281 and the first limit rib 282 is flush with the top of the first limit rib 282 , and the first limit rib 282 faces one end of the first guide rib 281 . One side is a guide surface, and the other side and both sides of the first guide rib 282 are both perpendicular to the surface where the first limit locking protrusion 28 is located. When the main beam 1 is docked with the installation cavity 27 , the first guide ribs 281 provide deformation guidance, so as to form a structure that is easy to install and difficult to separate, so as to complete the assembly quickly and stably.

Referring to FIGS. 3 and 5 , the clamping member 24 includes clamping units symmetrically distributed on both sides of the main beam 1 , the bottom of the clamping unit is perpendicular to the hook portion 241 on the side surface of the wing portion 22 , and the hook portion 241 abuts against Close to the bottom surface of the blocking portion 221 . The middle part of the clamping unit protrudes toward the weight-reducing groove 13 and forms a connecting portion 242 embedded in the weight-reducing groove 13 . The connecting portion 242 is provided with a first waist-shaped groove 243 corresponding to the second waist-shaped groove 15 ; The bolts pass through the first waist-shaped groove 243 and the second waist-shaped groove 15 to tighten the connecting portion 242 . The top of the clamping unit is provided with a fixing plate 244, a first reinforcing plate 26 is provided between the top of the top plate 23 and the base 21, and the fixing plates of the adjacent clamping units are arranged on both sides of the first reinforcing plate 26, opposite to each other. The fixing plate 244 and the first reinforcing plate 26 are tightened by passing through bolts.

1 and 6, the end of the auxiliary beam 3 is provided with a joint 31, the joint 31 includes a Z-shaped head 311 and a receiving plate 312 fixed to one end of the head 311 by screws, and the head 311 abuts against the main On the top and one side of the beam 1 , the receiving plate 312 abuts on the other side of the main beam 1 , and the auxiliary beam 3 is fixed to the Z-shaped middle part of the head 311 .

Referring to Figure 1 and Figure 2, the assembly method:

Insert the main beam 1 into the installation cavity 27, make the position of the first limit tab 28 correspond to the first limit slot 14, and make the web 12 fit into the stabilization slot 251; then install the clamping units from both sides respectively , the hook portion 241 and the top of the fingers are pressed against the blocking portion 221 and the top plate 23 respectively, the bolts are passed through the top fixing plate and the middle connecting portion 242 respectively, and the two clamping units are tightened. Install the other main beams 1 in sequence.

The auxiliary beam 3 is installed, the head 311 of the joint 31 is pressed against the top and inner side of the main beam 1, the receiving plate 312 is connected to press the other side tightly, and other auxiliary beams 3 are installed in sequence.

To install the base plate 4, first install the base plate 4 in the middle, and arrange according to the space separated by the partition 6, and then install the base plate 4 on both sides. The second buckle unit 8 of the middle substrate 4 is buckled;

In the construction of reinforced concrete, the bottom of the base plate 4 is provided with a mold that blocks the lower opening of the gap between the base plates 4, and the steel bars are distributed up and down along the arrangement direction of the auxiliary beam 3 and along the length direction of the auxiliary beam 3 to pass through the first carrier block 41 , pierce the steel bar on the second carrier block 42 along the length direction of the auxiliary beam 3 . Pour concrete.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as needed after reading this specification, but only within the protection of the present invention are protected by patent law.

Claims (10)

1. A floor structure for house building, characterized in that: a main beam (1) that is connected end to end, a first adapter assembly (2) connecting the main beam (1) and the main beam (1), a longitudinal arrangement Auxiliary beams (3) between the main beams (1), and a base plate (4) laterally arranged on the auxiliary beams (3), the auxiliary beams (3) dividing the area surrounded by the main beams (1) at intervals. There are a plurality of carrier grooves (5), the base plate (4) is partially concave and embedded in the carrier groove (5) and partially erected on the auxiliary beam (3) and the main beam (1), and the adjacent base plate ( 4) The two ends of the base plate (4) are respectively provided with a first buckle unit (7) and a second buckle unit (8) that are buckled with each other; the upper surface of the base plate (4) is fixed with an upper and lower distribution for reinforcing bars along the auxiliary beam (3). ) arrangement direction and the first carrier block (41) pierced along the length direction of the auxiliary beam (3), the base plate (4), the main beam (1) and the auxiliary beam (3) are covered with a reinforced concrete layer, so The fastening direction of the first fastening unit (7) and the second fastening unit (8) is the height direction, and a cavity is formed after the fastening, and the shock-absorbing ball (84) is hung in the cavity. 2. A building floor structure according to claim 1, wherein the auxiliary beam (3) and the main beam (1) are fixed with partitions (6) at intervals along the length direction, and the base plate (4) ) is erected at intervals in the area formed between the partitions (6), and a second carrier block (42) for the steel bar to pass through is arranged in the groove formed by the concave base plate (4) along the length direction of the auxiliary beam (3). ), the reinforced concrete layer is partially embedded in the space between the base plates (4). 3. A building floor structure according to claim 1, characterized in that: the first fastening unit (7) comprises a first connecting plate (71) protruding from the lower surface of the base plate (4) ) and a first limiting plate (72); the second buckling unit (8) includes a second connecting plate abutting on the surface of the first connecting plate (71) on the side away from the first limiting plate (72) (81), a second limiting plate (82) in contact with the surface of the first limiting plate (72) on the side away from the first connecting plate (71), and connecting the second connecting plate (81) and the second limiting plate (81) The connecting plate (83) of the position plate (82), the second connecting plate (81) is fixed to the base plate (4). 4. A building floor structure according to claim 3, characterized in that: the base plate (4) is disposed protruding inwardly near the inner surface of the first limiting plate (72), and the protruding part is arranged at A first compensation groove (73) is formed between the first limit plates (72), one end of the second limit plate (82) is curved in an arc shape, and one end of the second limit plate (82) is connected to the first One of the inner surfaces of the compensation groove (73) interferes. 5. A building floor structure according to claim 4, characterized in that: the inner wall of the second limit plate (82) is protruded with a second limit snap protrusion (85), A limiter plate (72) is provided with a second limiter groove that cooperates with the second limiter protrusion (85), the second limiter protrusion (85) and the first limiter plate (72) are first The contact part is provided with a guide structure. 6. A building floor structure according to claim 1, wherein the first adapter assembly (2) comprises a base (21) and a wing (22) laterally protruding from the base (21). ), a top plate (23) parallel to the surface of the wing (22), and a clamp (24), the top plate (23) is fixed to the base (21) and is installed together with the base (21) and the wings (22). Cavity (27), the wings (22) and the top plate (23) are both protruded from one side of the mounting cavity (27) with a first limit snap protrusion (28), the limit snap protrusion and the main The first contact part of the beam (1) is provided with a guide structure; the end of the main beam (1) is embedded in the installation cavity (27) and is provided with a first limit for the first limit tab (28) to be embedded in. The clamping slot (14); the clamping member (24) is pressed against both sides of the main beam (1), surrounds and presses against the top of the top plate (23), and is fixed to the wing portion (22). 7. A building floor structure according to claim 6, characterized in that: the main beam (1) comprises two mutually parallel exhibition boards (11) and a web located between the two display boards (11). A plate (12), a weight-reducing groove (13) is formed between the display plate (11) and the web plate (12), and the first limit slot (14) is arranged on the display plate (11); the clamping The component (24) includes clamping units symmetrically distributed on both sides of the main beam (1), and the middle of the clamping units protrudes toward the weight reduction groove (13) and forms a connection embedded in the weight reduction groove (13). a hook part (242), the bottom of the clamping unit is perpendicular to the hook part (241) on the side surface of the wing part (22); a first waist-shaped groove (243), the web (12) is provided with a second waist-shaped groove (15) corresponding to the first waist-shaped groove (243), and the sides of the wings (22) protrude A blocking portion (221) is provided, which is pressed against the bottom surface of the blocking portion (221). 8. A building floor structure according to claim 7, characterized in that: one side of the base (21) located in the installation cavity (27) is protruded with a length whose axis is perpendicular to the main beam (1) The protruding post (25) in the direction is parallel to the top, and the protruding post (25) is provided with a stable groove (251) for embedding the web (12). 9. A building floor structure according to claim 7, characterized in that: the first limiting protrusion (28) comprises a first guide protrusion (281) and a first limiting protrusion that are perpendicular to each other (282), wherein the first guide rib (281) is located on the side of the first limit rib (282) close to the first contact between the main beam (1) and the installation cavity (27) during installation, and the first guide rib The protruding heights of (281) and the first limiting rib (282) relative to the surface where the first limiting snap (28) is located both gradually decrease from the position where the two intersect to their respective ends; The top of the end where the guide rib (281) and the first limiting rib (282) intersect is flush with the top of the first limiting rib (282), and the first limiting rib (282) faces the first One side of the guide rib (281) is a guide surface, and the other side and the two sides of the first guide rib (281) are both perpendicular to the surface on which the first limit locking protrusion (28) is located. 10. A building floor structure according to claim 1, characterized in that: the end of the auxiliary beam (3) is provided with a joint (31), and the joint (31) comprises a Z-shaped head (311) and a receiving plate (312) fixed to one end of the head (311) by screws, the head (311) abutting on the top and one side of the main beam (1), the receiving plate (312) Abutting on the other side of the main beam (1), the auxiliary beam (3) is fixed to the Z-shaped middle part of the head (311).

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