CN106705899A - Pavement structure dynamic displacement measurement device and method - Google Patents
Pavement structure dynamic displacement measurement device and method Download PDFInfo
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- CN106705899A CN106705899A CN201611044084.4A CN201611044084A CN106705899A CN 106705899 A CN106705899 A CN 106705899A CN 201611044084 A CN201611044084 A CN 201611044084A CN 106705899 A CN106705899 A CN 106705899A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 title abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 185
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 238000000691 measurement method Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The embodiment of the invention discloses a pavement structure dynamic displacement measurement device and method. The device comprises a liquid pipeline, a hydraulic sensor and a displacement calculator. The liquid pipeline is a diameter-fixed bendable pipe body in which liquid is injected. The port of one end of the liquid pipeline is embedded below a pavement structure to be measured to act as the embedding end of the liquid pipeline. The embedding end is connected with the hydraulic sensor in a sealing way. The port of the other end of the liquid pipeline stretches out of the pavement to act as the exposed end of the liquid pipeline without being sealed. The hydraulic sensor is electrically connected with the displacement calculator and used for measuring the liquid pressure data of the embedding end in real time and transmitting the liquid pressure data to the displacement calculator so that the displacement calculator is enabled to calculate the dynamic displacement of the pavement structure to be measured according to the liquid pressure data. With application of the device and the method, the dynamic displacement of the pavement structure can be measured when there is a shield on the pavement structure, and the dynamic displacement of the pavement structure located at the certain depth below the ground can also be measured.
Description
Technical Field
The invention relates to the technical field of displacement measurement, in particular to a device and a method for measuring dynamic displacement of a pavement structure.
Background
In engineering practice, particularly in the highway industry, it is often necessary to measure the displacement response of a pavement structure under a certain impact load or static load, or to observe the settlement of a foundation in a certain place for a long time. At present, the common displacement measurement methods for road surface structures mainly comprise a contact measurement method and a non-contact measurement method. The contact type measurement mainly adopts a contact type displacement sensor, a stay wire sensor and the like to measure the displacement change of the pavement structure. The non-contact measurement mainly comprises methods such as optical measurement, inertial measurement, positioning measurement and the like. The optical measurement mainly adopts a laser range finder for displacement measurement, the inertial measurement mainly adopts an inertial device (such as an accelerometer) for measuring acceleration integral to obtain displacement, and the positioning measurement mainly adopts a satellite positioning or area positioning method for displacement measurement. These measurement methods are currently widely used in engineering practice, but the methods which are more feasible for measuring the displacement of the road surface structure are two methods, namely contact type displacement sensor measurement and optical measurement. In general, both methods can meet the engineering measurement requirements, but under some special conditions, for example, when there is a shelter above the road surface structure to be measured or a dynamic displacement response at a certain position inside the road surface structure needs to be measured, the conventional contact type displacement sensor measurement and optical measurement methods are no longer feasible, and a new measurement method needs to be searched.
Disclosure of Invention
The embodiment of the invention provides a device and a method for measuring dynamic displacement of a pavement structure, and aims to solve the problems that the conventional device and the conventional method for measuring the dynamic displacement of the pavement structure cannot meet the requirements of measuring the dynamic displacement of the pavement structure when a shielding object is arranged above the pavement structure and cannot measure the dynamic displacement of the internal position of the pavement structure.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
a road surface structure dynamic displacement measuring device comprises a liquid pipeline, a hydraulic sensor and a displacement calculator; wherein,
the liquid pipeline is a bendable pipe body with fixed diameter and internally filled with liquid; a port at one end of the liquid pipeline is embedded under a pavement structure to be measured and serves as an embedded end of the liquid pipeline, and the embedded end is hermetically connected with the hydraulic sensor; the port at the other end of the liquid pipeline extends out of the road surface and is not closed, and the port is used as the exposed end of the liquid pipeline;
the hydraulic sensor is electrically connected with the displacement calculator and is used for measuring the liquid pressure data of the liquid at the embedding end in real time and transmitting the liquid pressure data to the displacement calculator, so that the displacement calculator calculates the dynamic displacement of the road surface structure to be measured according to the liquid pressure data.
Optionally, the hydraulic sensor has a data acquisition end and a data transmission end; wherein,
the data acquisition end is hermetically connected with the embedding end, is in contact with liquid when liquid is injected into the liquid pipeline, and measures liquid pressure data of the embedding end;
the data transmission end is electrically connected with the displacement calculator through a data line and transmits the liquid pressure data measured by the data acquisition end to the displacement calculator.
Optionally, the outer surface of the data acquisition end is matched with the inner surface of the embedding end; the data acquisition end can be inserted into the embedding end, so that the data acquisition end and the embedding end form closed connection.
Optionally, a hollow pipe groove is arranged on the road surface of the road surface structure to be measured, or on the road surface within a preset range around the road surface structure to be measured, wherein one end of the hollow pipe groove is embedded under the road surface, and the other end of the hollow pipe groove extends out of the road surface; the exposed end extends out of the road surface through the hollow pipe groove and is fixed.
Optionally, the road surface structure to be measured is a road surface within a preset range, or the road surface structure to be measured is an underground structure at a preset depth below the road surface within the preset range.
Optionally, the liquid injected in the liquid line is water.
A method for measuring the dynamic displacement of a pavement structure comprises the following steps:
acquiring initial liquid pressure data measured by a hydraulic sensor under a pavement structure to be measured;
monitoring liquid real-time pressure data measured by a hydraulic sensor under a road surface structure to be measured;
and calculating the dynamic displacement of the road surface structure to be measured according to the initial liquid pressure data and the real-time liquid pressure data.
Optionally, the calculating a dynamic displacement of the road surface structure to be measured according to the initial pressure data of the liquid and the real-time pressure data of the liquid includes:
calculating the dynamic displacement of the road surface structure to be measured by using the following formula:
wherein: delta h is the dynamic displacement of the road surface structure to be measured; p is the liquid real-time pressure data; p is a radical of0Is the liquid initial pressure data; rho is the density of the liquid in the liquid pipeline; g is the acceleration of gravity.
According to the technical scheme, the device and the method for measuring the dynamic displacement of the pavement structure, which are provided by the embodiment of the invention, take the port at one end of the liquid pipeline as an embedding end, are hermetically connected with the hydraulic sensor and are embedded below the pavement structure to be measured. Meanwhile, the port at the other end of the liquid pipeline is used as an exposed end, extends out of the road surface and is not closed, and is in direct contact with the atmosphere.
The hydraulic sensor is electrically connected with the displacement calculator, can measure the liquid pressure data of the embedded end in real time, and transmits the liquid pressure data to the displacement calculator.
When no extra load applies pressure to the road surface structure to be measured, measuring the liquid pressure data of the embedding end, and taking the data as the initial liquid pressure data; when extra load is applied to the road surface structure to be measured, the road surface structure may be displaced, so as to drive the embedded end to be displaced. For example, the buried end sinks down below the road surface structure to be measured. Based on the principle of atmospheric equilibrium, the pressure of a liquid is proportional to its height from the ground, i.e. the greater the depth below the ground, the greater the pressure of the liquid. Therefore, when extra load is applied to the upper part of the pavement structure to be measured, the liquid pressure data of the liquid at the embedding end is used as the liquid real-time pressure data.
And calculating the dynamic displacement of the road surface structure to be measured by using the initial pressure data of the liquid and the real-time pressure data of the liquid through a displacement calculator.
By adopting the device and the method in the embodiment of the invention, the dynamic displacement of the road surface structure can be measured when the sheltering object is arranged above the road surface structure, and the dynamic displacement of the road surface structure at a certain underground depth can be measured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a dynamic displacement measuring device for a road surface structure according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for measuring a dynamic displacement of a road surface structure according to an embodiment of the present invention.
In the drawings, the main parts are illustrated by symbols:
1: liquid line 2: hydraulic sensor
3: the displacement calculator 4: liquid, method for producing the same and use thereof
5: road surface structure 6 to be measured: data line
7: weight object
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a pavement structure dynamic displacement measurement device provided in an embodiment of the present invention, including: a liquid pipeline 1, a hydraulic sensor 2 and a displacement calculator 3; wherein,
the liquid line 1 is a flexible pipe body having a fixed diameter into which the liquid 4 is injected, and the diameter of the liquid line 1 does not change when pressure is applied to the liquid line 1 from the outside. The liquid pipeline 1 is a hollow pipe body, liquid 4 can be contained inside the liquid pipeline, and the containing amount of the liquid 4 is determined according to actual conditions.
In one embodiment of the present invention, the liquid 4 may be water. Alternatively, the liquid 4 may be a liquid that is not easily frozen or evaporated when the temperature of the use environment is low or high.
As shown in fig. 1, a port at one end of the liquid pipe 1 is buried under a road surface structure 5 to be measured as a buried end of the liquid pipe 1, and the port is hermetically connected to the hydraulic pressure sensor 2.
The sealing connection mode of the embedded end and the hydraulic sensor 2 can be as follows: the hydraulic sensor 2 is inserted into the embedding end, and the two are tightly connected to form a closed connection; alternatively, the following may be used: the hydraulic sensor 2 is in contact with the port of the embedding end, and the outside of the hydraulic sensor and the port of the embedding end are fixedly sealed by adopting a sealing adhesive tape and the like to form closed connection. In the embodiment of the present invention, the embedding end and the hydraulic sensor 2 may be hermetically connected in various ways, which are not specifically listed, as long as the liquid 4 at the embedding end does not flow out, and the hydraulic sensor 2 can measure the pressure data of the liquid 4 at the embedding end.
The embedding end and the hydraulic sensor 2 are embedded under the pavement structure 5 to be measured together, so that when the pavement structure 5 to be measured displaces, the embedding end and the hydraulic sensor 2 can displace along with the displacement.
The other end of the liquid pipeline 1 extends out of the road surface and is not closed, and the end is taken as the exposed end of the liquid pipeline 1, so that the liquid pipeline is directly communicated with the atmosphere.
As shown in fig. 1, the hydraulic pressure sensor 2 is electrically connected to the displacement calculator 3, and is configured to measure pressure data of the liquid 4 at the buried end of the liquid pipeline 1 in real time and transmit the pressure data to the displacement calculator 3. In one embodiment of the invention, the hydraulic sensor 2 may be electrically connected to the displacement calculator 3 via a data line 6.
The hydraulic sensor 2 transmits the measured hydraulic pressure data to the displacement calculator 3, and the displacement calculator 3 calculates the dynamic displacement of the road surface structure 5 to be measured according to the hydraulic pressure data.
In the embodiment of the present invention, the following way may be adopted to calculate the dynamic displacement of the road surface structure 5 to be measured:
when no additional load applies pressure to the pavement structure 5 to be measured, liquid pressure data of the liquid 4 at the buried end of the liquid pipeline 1 is measured and taken as liquid initial pressure data. For example, no additional object above the road surface structure 5 to be measured applies pressure to the road surface structure 5 to be measured except for the originally covered object, and at this time, the road surface structure 5 to be measured is not displaced, and therefore, the liquid pressure data of the liquid 4 at the embedding end is taken as the liquid initial pressure data. As shown in fig. 1, the liquid line 1 may be placed in parallel below the pavement structure 5 to be measured, and in fig. 1, the liquid line 1 filled with the pattern inside is in an initial state when the liquid line 1 is not displaced.
When an additional load exerts a pressure on the top of the pavement structure 5 to be measured, the pavement structure may be displaced, thereby driving the embedded end to be displaced. For example, as shown in fig. 1, an additional weight 7 is placed above the pavement structure 5 to be measured, and the weight 7 applies a pressure to the pavement structure 5 to be measured, so that the pavement structure 5 to be measured is displaced downward, and the buried end is lowered downward below the pavement structure 5 to be measured. In fig. 1, the liquid line 1 shown by a dotted line is in a state when the liquid line 1 is displaced, and at this time, the liquid line 1 is inclined downward. Based on the principle of atmospheric equilibrium, the pressure of the liquid is proportional to its height from the ground, i.e. the greater the depth below the ground, the greater the pressure of the liquid. Therefore, when an extra load is applied to the upper side of the pavement structure 5 to be measured, the liquid pressure data of the liquid 4 at the buried end of the liquid pipeline 1 is used as the liquid real-time pressure data.
The change of the liquid pressure data of the liquid 4 generated when the liquid pipeline 1 is displaced can indirectly reflect the displacement of the liquid pipeline 1, and further reflect the displacement change of the road surface structure 5 to be measured.
Therefore, in the embodiment of the present disclosure, the dynamic displacement change of the road surface structure may be inversely calculated based on the formula p ═ ρ g h according to the liquid initial pressure data and the liquid real-time pressure data. The specific calculation method comprises the following steps:
wherein: Δ h is the dynamic displacement of the pavement structure 5 to be measured; p is liquid real-time pressure data; p is a radical of0Initial pressure data of the liquid; ρ is the density of the liquid 4 in the liquid line 1; g is the acceleration of gravity.
As shown in fig. 1, h is the distance between the liquid level height of the liquid 4 at the exposed end and the hydraulic sensor 2 after the liquid pipeline 1 is displaced; h is0The distance between the liquid level height of the liquid 4 at the exposed end and the hydraulic sensor 2 when the liquid pipeline 1 is not displaced; Δ h is the displacement of the hydraulic sensor 2 before and after the displacement of the liquid pipeline 1, i.e. the displacement of the pavement structure 5 to be measured.
By using the above method, the dynamic displacement condition of the road surface structure 5 to be measured can be measured.
In the actual situation of measuring the dynamic displacement of the road surface structure, the pressure applied to the road surface structure may be a static load or a dynamic load, for example, when a vehicle passes through the road surface structure, the load borne by the road surface structure is a dynamic load, and therefore, in the embodiment disclosed in the invention, the displacement of the road surface structure when bearing the static load can be measured, and the displacement of the road surface structure when bearing the dynamic load can also be measured.
In another embodiment disclosed in the present invention, in the dynamic displacement measuring device of a road surface structure in the foregoing embodiment, the hydraulic sensor 2 has a data acquisition end and a data transmission end; wherein,
the data acquisition end is hermetically connected with the embedded end of the liquid pipeline 1 in a manner similar to that of the previous embodiment, and will not be described herein again.
In the disclosed embodiment of the invention, the liquid pipeline 1 is generally horizontally embedded below the road surface structure 5 to be measured; alternatively, the liquid pipeline 1 is embedded obliquely below the pavement structure 5 to be measured, wherein the embedding depth of the embedding end is greater than that of other embedded parts on the liquid pipeline 1. Thus, after the liquid 4 is injected inside the liquid pipe 1, the buried end is continuously in a state of being filled with the liquid 4.
Therefore, the data acquisition end can be in contact with the liquid 4 when the liquid 4 is injected into the liquid pipeline 1, and measures the liquid pressure data of the liquid 4 at the buried end of the liquid pipeline 1.
The data transmission end is electrically connected with the displacement calculator 3 through a data line 6 and can transmit the liquid pressure data measured by the data acquisition end to the displacement calculator 3.
In one embodiment of the present disclosure, the outer surface of the data acquisition end in the previous embodiment is matched with the inner surface of the embedded end of the liquid pipeline 1, so that the data acquisition end can be inserted into the embedded end, and the data acquisition end and the embedded end are hermetically connected. For example, the data acquisition end is cylindrical, the diameter of the cross section of the data acquisition end is the same as that of the inner surface of the embedding end, the data acquisition end can be inserted into the embedding end, the data acquisition end and the embedding end are tightly nested to form a sealed connection, and the liquid 4 cannot flow out of the embedding end.
Alternatively, the data acquisition end may be a cylinder having a threaded outer surface, the inner surface of the embedding end has threads matching the threads of the outer surface of the data acquisition end, and the data acquisition end may be inserted into the embedding end by rotating the outer surface of the threads matching the embedding end to tightly connect the two, so that the liquid 4 cannot flow out of the embedding end.
In another embodiment of the present disclosure, a hollow pipe groove is provided on the road surface, one end of the hollow pipe groove is embedded under the road surface, and the other end of the hollow pipe groove extends out of the road surface, and the exposed end of the liquid pipeline 1 extends out of the road surface and is fixed through the hollow pipe groove. The hollow pipe groove can be arranged on the road surface within a preset range around the road surface structure 5 to be measured, and can also be arranged on the road surface of the road surface structure 5 to be measured.
In one embodiment of the present disclosure, the road surface structure 5 to be measured is a road surface within a preset range, for example, a road surface within a range of 5 square meters, and the embedded end of the liquid pipeline 1 may be disposed right below the center position of the road surface to be measured; alternatively, the pavement structure 5 to be measured is an underground structure at a predetermined depth below the pavement within a predetermined range, for example, an underground structure at a depth of 0.5 m below the pavement within a range of 5 square meters, and the buried end of the liquid pipeline 1 may be disposed right below the center position of the underground structure.
The dynamic displacement of the road surface structure measured by the embodiment of the invention can be used as the average dynamic displacement of the road surface structure 5 to be measured, or can be used as the dynamic displacement of the center position of the road surface structure 5 to be measured.
Fig. 2 is a flowchart of a method for measuring a dynamic displacement of a road surface structure, which uses the device for measuring a dynamic displacement of a road surface structure disclosed in the foregoing embodiment, and includes the following steps:
in step S101, initial pressure data of liquid measured by a hydraulic sensor under a road surface structure to be measured is acquired.
Similarly to the foregoing embodiment, when no additional load applies pressure to the road surface structure to be measured, the hydraulic pressure data of the liquid at the embedding end is measured using the hydraulic pressure sensor hermetically connected to the embedding end on the liquid pipe, and this data is taken as liquid initial pressure data, that is, liquid pressure data of the liquid at the embedding end when no displacement of the road surface structure to be measured occurs.
In step S102, real-time pressure data of the liquid measured by the hydraulic sensor under the road surface structure to be measured is monitored.
Similar to the previous embodiment, when an additional load applies pressure on the upper side of the pavement structure to be measured, the pavement structure may be displaced, thereby driving the embedded end to be displaced. Therefore, when extra load is applied to the upper part of the road surface structure to be measured, the liquid pressure data of the liquid at the embedded end of the liquid pipeline is used as the liquid real-time pressure data.
Monitoring liquid real-time pressure data measured by a hydraulic sensor under a to-be-measured pavement structure, and if the liquid pressure data of liquid at the embedding end changes, indicating that the embedding end displaces, so as to reflect the displacement of the to-be-measured pavement structure; if the liquid pressure data of the liquid at the embedding end does not change, the embedding end does not displace, and the pavement structure to be measured does not displace.
In step S103, a dynamic displacement of the road surface structure to be measured is calculated according to the liquid initial pressure data and the liquid real-time pressure data.
After the initial pressure data and the real-time pressure data of the liquid are obtained, whether the road surface structure to be measured has dynamic displacement or not can be judged by utilizing the difference between the initial pressure data and the real-time pressure data of the liquid, and the dynamic displacement of the road surface structure to be measured is calculated by utilizing the relation between the liquid pressure and the liquid depth.
In one embodiment of the disclosure, calculating the dynamic displacement of the road surface structure to be measured according to the initial pressure data of the liquid and the real-time pressure data of the liquid includes:
calculating the dynamic displacement of the road surface structure to be measured by using the following formula:
wherein: delta h is the dynamic displacement of the road surface structure to be measured; p is liquid real-time pressure data; p is a radical of0Initial pressure data of the liquid; rho is the density of the liquid in the liquid pipeline; g is the acceleration of gravity.
Similar to the foregoing embodiments, in the actual situation of measuring the dynamic displacement of the road surface structure, the pressure applied to the road surface structure may be a static load or a dynamic load.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A road surface structure dynamic displacement measuring device is characterized by comprising a liquid pipeline, a hydraulic sensor and a displacement calculator; wherein,
the liquid pipeline is a bendable pipe body with fixed diameter and internally filled with liquid; a port at one end of the liquid pipeline is embedded under a pavement structure to be measured and serves as an embedded end of the liquid pipeline, and the embedded end is hermetically connected with the hydraulic sensor; the port at the other end of the liquid pipeline extends out of the road surface and is not closed, and the port is used as the exposed end of the liquid pipeline;
the hydraulic sensor is electrically connected with the displacement calculator and used for measuring the liquid pressure data of the embedded end in real time and transmitting the liquid pressure data to the displacement calculator, so that the displacement calculator calculates the dynamic displacement of the road surface structure to be measured according to the liquid pressure data.
2. The pavement structure dynamic displacement measuring device of claim 1, wherein the hydraulic sensor has a data acquisition end and a data transmission end; wherein,
the data acquisition end is hermetically connected with the embedding end, is in contact with liquid when liquid is injected into the liquid pipeline, and measures liquid pressure data of the embedding end;
the data transmission end is electrically connected with the displacement calculator through a data line and transmits the liquid pressure data measured by the data acquisition end to the displacement calculator.
3. The pavement structure dynamic displacement measuring device of claim 2, wherein an outer surface of the data acquisition end matches an inner surface of the embedding end; the data acquisition end can be inserted into the embedding end, so that the data acquisition end and the embedding end form closed connection.
4. The dynamic displacement measuring device of a pavement structure according to claim 1, wherein a hollow pipe groove is provided on the pavement of the pavement structure to be measured, or on the pavement within a predetermined range around the pavement structure to be measured, one end of the hollow pipe groove being embedded under the pavement and the other end thereof extending out of the pavement; the exposed end extends out of the road surface through the hollow pipe groove and is fixed.
5. The dynamic displacement measuring device for a pavement structure according to claim 1, wherein the pavement structure to be measured is a pavement within a predetermined range, or the pavement structure to be measured is an underground structure at a predetermined depth below the pavement within the predetermined range.
6. A pavement structure dynamic displacement measuring device according to any one of claims 1-5, characterized in that the liquid injected in the liquid pipeline is water.
7. A method for measuring a dynamic displacement of a road surface structure, which is applied to the apparatus for measuring a dynamic displacement of a road surface structure according to any one of claims 1 to 6, comprising:
acquiring initial liquid pressure data measured by a hydraulic sensor under a pavement structure to be measured;
monitoring liquid real-time pressure data measured by a hydraulic sensor under a road surface structure to be measured;
and calculating the dynamic displacement of the road surface structure to be measured according to the initial liquid pressure data and the real-time liquid pressure data.
8. The method for measuring the dynamic displacement of the pavement structure according to claim 7, wherein the step of calculating the dynamic displacement of the pavement structure to be measured according to the initial liquid pressure data and the real-time liquid pressure data comprises the following steps:
calculating the dynamic displacement of the road surface structure to be measured by using the following formula:
wherein: delta h is the dynamic displacement of the road surface structure to be measured; p is the liquid real-time pressure data; p is a radical of0Is the liquid initial pressure data; rho is the density of the liquid in the liquid pipeline; g is the acceleration of gravity.
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| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
| CN116379879A (en) * | 2023-06-07 | 2023-07-04 | 机械工业勘察设计研究院有限公司 | Crack detection device for ancient building and application method of crack detection device |
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| CN103389066A (en) * | 2013-08-08 | 2013-11-13 | 华南理工大学建筑设计研究院 | Method for dynamically monitoring vertical displacement of building |
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| CN202109904U (en) * | 2011-06-14 | 2012-01-11 | 湖南五舟检测科技有限公司 | Roadbed settlement monitoring equipment |
| CN103389066A (en) * | 2013-08-08 | 2013-11-13 | 华南理工大学建筑设计研究院 | Method for dynamically monitoring vertical displacement of building |
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| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
| CN116379879A (en) * | 2023-06-07 | 2023-07-04 | 机械工业勘察设计研究院有限公司 | Crack detection device for ancient building and application method of crack detection device |
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