CA2332751A1 - Cable net suspension floor - Google Patents
Cable net suspension floor Download PDFInfo
- Publication number
- CA2332751A1 CA2332751A1 CA 2332751 CA2332751A CA2332751A1 CA 2332751 A1 CA2332751 A1 CA 2332751A1 CA 2332751 CA2332751 CA 2332751 CA 2332751 A CA2332751 A CA 2332751A CA 2332751 A1 CA2332751 A1 CA 2332751A1
- Authority
- CA
- Canada
- Prior art keywords
- floor
- masts
- combinations
- net
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 235000012773 waffles Nutrition 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims 3
- 239000011210 fiber-reinforced concrete Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention is a cable net suspension floor. It is comprised of the floor slab, masts that the floor slab rests upon, and a cable suspension net that the masts rest upon. The load on the floor is transferred from the slab to the masts. The masts are rigidly joined and perpendicular to the underside of the slab. The lengths of the masts vary in length in a regular manner from longest in the middle to shortest at the outside. The masts form a two dimensional array.
Cables join the bottoms of the masts to each other. The ends of the cables are joined to the masts i.e. the masts are not free to travel along the cables. The cables form a net. The sides of the net are attached to horizontal beams. Thus stress is transferred from the slab to the horizontal beams at the edges of the slab.
Cables join the bottoms of the masts to each other. The ends of the cables are joined to the masts i.e. the masts are not free to travel along the cables. The cables form a net. The sides of the net are attached to horizontal beams. Thus stress is transferred from the slab to the horizontal beams at the edges of the slab.
Description
Cable Net Suspension Floor The cable net suspension floor is related to the field of structural engineering and architecture. Tall buildings must overcome two naturally occurnng dynamic forces in order to function properly. One is an earthquake and the other is wind. To overcome wind loads, engineers added weight in the form of heavy stone facades. This decreases the stability of the building in earthquakes.
In general, the lighter the building is the more stable it is in earthquakes.
Khan in the 70's overcame this paradox by proposing to move columns located in the interior of the building to locations closer to the extremities. Thus, the building has the same weight bearing capacity due to the same number of columns. The building is stiffer. It is more resistant to wind loading because the columns close to the outside of the building make the mechanics of the building more like a large tube. A tube is more resistant to bending than a solid cylinder of similar mass.
A building of this configuration requires a floor that can span a greater free distance and offers some reduction in mass. The cable net suspension floor is such a floor.
The waffle type floor can span 15 meters. The cable net suspension floor can span a greater distance than this due to its unique geometry and the superior physical properties of steel over those of concrete, especially in tensile loading.
Summary of the Description The cable net suspension floor is essentially a floor supported by an under slung inverted three-dimensional truss.
A truss is comprised of tension and compression members. By inverting the truss all the members along the bottom of the truss are in tension. In the invention, a net comprised of cables replaces these tension members.
Compression members called masts transfer load from the floor to the cable net. The masts form a regular array along the underside of slab. The masts vary in length from longest in the center to shortest at the outside. The masts are shown in Figure 1.
The cable net is comprised of individual lengths of cable. The masts meet the net at the junctions of the cables. The cables form a net as shown in Figure 2. The edges of the net are similarly joined to horizontal beams.
The horizontal beams are located at the edges of the slab.
In this manner the entire load of the floor is transferred through the masts and through the net to these horizontal beams.
Product Description The product has four components: 1) the steel reinforced concrete floor slab, 2) the edge beams, 3) the cable net, 4) the masts which separate items 1 and 3.
The slab is a steel reinforced concrete of uniform thickness through out. It is finished on top to the quality required by the floor covering.
The masts are rigidly connected to the slab. The masts are welded to the steel reinforcing bar of the concrete floor slab. Their distribution covers the area underneath the slab forming a regular pattern. The lengths of the masts vary so that the longest is located at the center of the slab and the shortest are located closest to the edges of the slab. There are no masts along the edge of the slab. The masts are shown in Figure 1. This is a cross sectional view of the mid point of the floor. They are also shown in Figure 2 in a bottom view of the floor and in Figure 3 a bottom isometric view. In this description the floor is square and symmetrical. Other configurations are in the claims section of this patent application.
The cable net is comprised of wire rope sections with one turnbuckle connector for each section. The turnbuckles are used to take the slack out of the net. The ends of the cables meet at the bottom ends of the masts. The ends of the cables are joined to the bottoms of the masts by typical wire rope fasteners. The masts are not allowed to travel along the cables.
Along the edges of the slab the cables are fastened near the top of the horizontal beams. The cable suspension net is shown in Figure 3, the bottom isometric view, in Figure 2, the bottom view, and in Figure l, the cross sectional view.
The horizontal beams are located at the edges of the slab. The horizontal beams are steel reinforced concrete. They support the edges of the slab as well as the cable net. The horizontal beams are shown in Figures 1 through 3.
Stress is transferred from the top surface of the floor, through the masts, then through the cable net to the horizontal edge beams.
A second cable net is applied at a forty-five degree angle to the first, doubling the safety factor of one cable net alone. The second cable net is not shown in any figure.
The intended use is for structural purposes. Using the cable net suspension floor the structural engineer will be able to erect buildings to previously unreachable heights. Utilizing the greater free span of the cable net suspension floor the designer will be able to locate more columns around the perimeter of the building, making the building stiffer, more resistant to wind loading, without increasing the weight or increasing the risk of damage in earthquakes.
A secondary use is purely esthetic. The large free span makes possible the use of multiple, stacked atriums or other comfort areas requiring an unencumbered look.
In general, the lighter the building is the more stable it is in earthquakes.
Khan in the 70's overcame this paradox by proposing to move columns located in the interior of the building to locations closer to the extremities. Thus, the building has the same weight bearing capacity due to the same number of columns. The building is stiffer. It is more resistant to wind loading because the columns close to the outside of the building make the mechanics of the building more like a large tube. A tube is more resistant to bending than a solid cylinder of similar mass.
A building of this configuration requires a floor that can span a greater free distance and offers some reduction in mass. The cable net suspension floor is such a floor.
The waffle type floor can span 15 meters. The cable net suspension floor can span a greater distance than this due to its unique geometry and the superior physical properties of steel over those of concrete, especially in tensile loading.
Summary of the Description The cable net suspension floor is essentially a floor supported by an under slung inverted three-dimensional truss.
A truss is comprised of tension and compression members. By inverting the truss all the members along the bottom of the truss are in tension. In the invention, a net comprised of cables replaces these tension members.
Compression members called masts transfer load from the floor to the cable net. The masts form a regular array along the underside of slab. The masts vary in length from longest in the center to shortest at the outside. The masts are shown in Figure 1.
The cable net is comprised of individual lengths of cable. The masts meet the net at the junctions of the cables. The cables form a net as shown in Figure 2. The edges of the net are similarly joined to horizontal beams.
The horizontal beams are located at the edges of the slab.
In this manner the entire load of the floor is transferred through the masts and through the net to these horizontal beams.
Product Description The product has four components: 1) the steel reinforced concrete floor slab, 2) the edge beams, 3) the cable net, 4) the masts which separate items 1 and 3.
The slab is a steel reinforced concrete of uniform thickness through out. It is finished on top to the quality required by the floor covering.
The masts are rigidly connected to the slab. The masts are welded to the steel reinforcing bar of the concrete floor slab. Their distribution covers the area underneath the slab forming a regular pattern. The lengths of the masts vary so that the longest is located at the center of the slab and the shortest are located closest to the edges of the slab. There are no masts along the edge of the slab. The masts are shown in Figure 1. This is a cross sectional view of the mid point of the floor. They are also shown in Figure 2 in a bottom view of the floor and in Figure 3 a bottom isometric view. In this description the floor is square and symmetrical. Other configurations are in the claims section of this patent application.
The cable net is comprised of wire rope sections with one turnbuckle connector for each section. The turnbuckles are used to take the slack out of the net. The ends of the cables meet at the bottom ends of the masts. The ends of the cables are joined to the bottoms of the masts by typical wire rope fasteners. The masts are not allowed to travel along the cables.
Along the edges of the slab the cables are fastened near the top of the horizontal beams. The cable suspension net is shown in Figure 3, the bottom isometric view, in Figure 2, the bottom view, and in Figure l, the cross sectional view.
The horizontal beams are located at the edges of the slab. The horizontal beams are steel reinforced concrete. They support the edges of the slab as well as the cable net. The horizontal beams are shown in Figures 1 through 3.
Stress is transferred from the top surface of the floor, through the masts, then through the cable net to the horizontal edge beams.
A second cable net is applied at a forty-five degree angle to the first, doubling the safety factor of one cable net alone. The second cable net is not shown in any figure.
The intended use is for structural purposes. Using the cable net suspension floor the structural engineer will be able to erect buildings to previously unreachable heights. Utilizing the greater free span of the cable net suspension floor the designer will be able to locate more columns around the perimeter of the building, making the building stiffer, more resistant to wind loading, without increasing the weight or increasing the risk of damage in earthquakes.
A secondary use is purely esthetic. The large free span makes possible the use of multiple, stacked atriums or other comfort areas requiring an unencumbered look.
Claims (23)
1) The cable net suspension floor comprising the slab floor, masts for distributing the load on the floor through the net, the net for distributing the load to the edge beams;
and the horizontal edge beams.
and the horizontal edge beams.
2) The combination defined in claim 1, where the slab floor in Claim 1 is a waffle slab floor.
3) The combination defined in claim 1, where the slab floor in Claim 1 is a hollow slab floor
4) The combinations defined in claim 1 through 3 where the cable net in Claim 1 is a chain net.
5) The combinations defined in claim 1 through 3 where the cable net in Claim 1 is a flexible tubing net.
6) The combinations defined in claim 1 through 3 where the cable net in Claim 1 is a tension only spar net.
7) The combinations defined in claim 1 through 3 where the cable net in Claim 1 is rigid.
8) The combinations defined in Claims 1 through 7 where the slab floor in Claim 1 is a space frame supported floor.
9) The combinations defined in Claims 1 through 7 where the slab floor in Claim 1 is a truss-supported floor.
10) The combinations in Claims 1 through 9 where the masts are metal.
11 ) The combinations in Claim 10 where the masts are concrete.
12) The combinations in Claim 10 where the masts are wood
13) The combinations in Claims 10, 11 and 12 where the masts are solid.
14) The combinations in Claims 10, 11 and 12 where the masts are hollow.
15) The combinations in Claims 1 through 14 where the floor is concrete.
16) The combinations in Claims 1 through 14 where the floor is steel reinforced concrete.
17) The combinations in Claims 1 through 14 where the floor is fibre reinforced concrete.
18) The combinations in Claims 1 through 14 where the floor is wood.
19) The combinations in Claims 1 through 14 where the floor is steel.
20) The combinations in Claims 1 through 19 where the horizontal edge beams are steel reinforced concrete.
21) The combinations in Claims 1 through 19 where the horizontal beams are steel.
22) The combinations in Claims 1 through 19 where the horizontal beams are wood.
23) The combinations in Claims 1 through 22 where the floor is a flat roof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2332751 CA2332751A1 (en) | 2001-01-31 | 2001-01-31 | Cable net suspension floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2332751 CA2332751A1 (en) | 2001-01-31 | 2001-01-31 | Cable net suspension floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2332751A1 true CA2332751A1 (en) | 2002-07-31 |
Family
ID=4168219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2332751 Abandoned CA2332751A1 (en) | 2001-01-31 | 2001-01-31 | Cable net suspension floor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2332751A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1033619C2 (en) * | 2007-03-30 | 2008-02-06 | Sven Pieter Andreas Hu Henning | Suspended floor comprising tension cables, membrane and pressure elements with a filler between them for distribution of floor loads in the horizontal plane. |
| GB2619012A (en) * | 2022-05-19 | 2023-11-29 | Net Zero Projects Ltd | A structural slab and method of manufacture |
-
2001
- 2001-01-31 CA CA 2332751 patent/CA2332751A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1033619C2 (en) * | 2007-03-30 | 2008-02-06 | Sven Pieter Andreas Hu Henning | Suspended floor comprising tension cables, membrane and pressure elements with a filler between them for distribution of floor loads in the horizontal plane. |
| GB2619012A (en) * | 2022-05-19 | 2023-11-29 | Net Zero Projects Ltd | A structural slab and method of manufacture |
| GB2619012B (en) * | 2022-05-19 | 2024-11-27 | Net Zero Projects Ltd | A structural slab and method of manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |