Discontinuous caisson foundation space deformation measuring system

Abstract

The invention provides a discontinuous caisson foundation space deformation measurement system, which relates to the field of caisson foundation technology space deformation measurement and comprises a magnetostrictive displacement meter, a wireless composite sensor and a cloud platform. The first caisson foundation is connected with a permanent building structure through the magnetostrictive displacement meter, the other caisson foundations are connected through the magnetostrictive displacement meters, the wireless composite sensors are arranged on all the caisson foundations, and the intelligent detection terminal obtains data of the magnetostrictive displacement meters and the wireless composite sensors in real time. And after data is transmitted to the platform, the change condition of each caisson foundation in the space can be monitored in real time according to calculation. Real-time monitoring of space deformation of the underwater discontinuous caisson foundation is achieved, the situation that abnormal space deformation of the caisson foundation cannot be known is avoided, and the safety of whole-process construction of an upper structure is ensured.

Description

Technical Field

[0001] The present invention relates to the field of measuring spatial deformation of caisson foundation technology, and particularly to a discontinuous caisson foundation spatial deformation measurement system. Background Art

[0002] Caisson foundations on the seashore and revetments are important foundation structures for marine engineering. Caisson foundations provide support through their large weight and large contact area, bearing the weight of the buildings or equipment above. It can provide a stable foundation for buildings, docks, bridges, offshore wind turbines, etc., ensuring their safe placement in the marine environment.

[0003] The settlement and horizontal displacement of caisson foundations are directly related to the stability of the overall structure. Therefore, the settlement value and horizontal displacement value of caisson foundations can be used to evaluate the stability of the foundation, thereby guiding the construction of the superstructure. After ensuring the stability of the caisson foundation, the construction of the superstructure is carried out, and the displacement changes of the caisson foundation during the whole process of superstructure construction are monitored to ensure the safety of the project.

[0004] The degree of automation in the field of civil engineering is extremely low. In conventional projects, manual monitoring methods are often used. Monitoring personnel use total stations and levels for settlement observation. This monitoring method will cause a large part of the errors caused by human factors, which is not only time-consuming and laborious, but also these instruments cannot be used to observe caisson foundations that are long-term underwater, such as those on the seashore and revetments. In the emerging field of automated monitoring, static level gauges are used for settlement monitoring. Static level gauges work based on the "communicating vessels" principle, but static level gauges are large in volume and difficult to install on structural components such as rails and switches, that is, they are easily affected by the superstructure. When working underwater, problems such as equipment water ingress and damage to the communicating pipes may occur, resulting in the equipment being unable to work properly.

[0005] In view of this, the present application is proposed. Summary of the Invention

[0006] The present invention provides a discontinuous caisson foundation spatial deformation measurement system, which can at least partially improve the above problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A discontinuous caisson foundation spatial deformation measurement system, which includes: a cloud platform, a magnetostrictive displacement gauge assembly, and a wireless composite sensor assembly. Among them, the permanent building structure and multiple caisson foundations are connected using the magnetostrictive displacement gauge assembly, and the wireless composite sensor assembly is configured on the caisson foundation; Among them, the cloud platform is configured to implement the following steps by executing the computer program stored therein: Obtain the vertical relative displacement of the caisson foundation and the horizontal relative displacement of the caisson foundation collected by the magnetostrictive displacement gauge assembly; Obtain the angle information collected by the wireless composite sensor assembly; Perform spatial deformation calculation on the vertical relative displacement, horizontal relative displacement and angle information according to a preset formula to generate a settlement value and a horizontal displacement value.

[0008] Preferably, the angle information includes the included angle data between the caisson foundation and the xy plane, xz plane and yz plane.

[0009] Preferably, the preset formula is:

[0010]

[0011] Wherein, is the settlement value at the rightmost end of the upper surface corresponding to the i-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the i-th caisson foundation, is the settlement value at the rightmost end of the upper surface corresponding to the (i - 1)-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the (i - 1)-th caisson foundation, is the angle change between the upper surface of the i-th caisson foundation and the xy plane, is the angle change between the i-th caisson foundation and the yz plane, is the length of the i-th caisson foundation, is the vertical relative displacement obtained by the magnetostrictive displacement gauge connected to the left side of the upper surface of the i-th caisson foundation, is the horizontal relative displacement obtained by the magnetostrictive displacement gauge connected to the left side of the lower surface of the i-th caisson foundation.

[0012] Preferably, the magnetostrictive displacement gauge assembly includes a first magnetostrictive displacement gauge and a second magnetostrictive displacement gauge with the same number as the caisson foundations. The first magnetostrictive displacement gauge is arranged on the upper side of the first end face of the caisson foundation, and the second magnetostrictive displacement gauge is arranged on the lower side of the first end face of the caisson foundation. The first magnetostrictive displacement gauge is configured to collect the vertical relative displacement of the caisson foundation, and the second magnetostrictive displacement gauge is configured to collect the horizontal relative displacement of the caisson foundation.

[0013] Preferably, the first magnetostrictive displacement gauge and the second magnetostrictive displacement gauge are configured to detect the relative deformation between two objects by the relative position change of the magnetic ring and the top sensor.

[0014] Preferably, the first end face of the caisson foundation is the side facing away from the sea.

[0015] Preferably, the wireless composite sensor assembly includes wireless composite sensors equal in number to the caisson foundations, and the wireless composite sensors are arranged on the caisson foundations and configured to detect the angular changes between the top surface of the caisson foundation and the xy plane, xz plane, and yz plane of the established coordinate axes.

[0016] Preferably, the other side of the caisson foundation facing away from the sea.

[0017] Preferably, the permanent building structure is a building structure that is considered not to undergo relative deformation and horizontal deformation after experiencing historical settlement for a preset time.

[0018] In summary, the discontinuous caisson foundation spatial deformation measurement system includes magnetostrictive displacement gauges, wireless composite sensors, and a cloud platform. The first caisson foundation is connected to the permanent building structure by magnetostrictive displacement gauges, and the other caisson foundations are also connected to each other by magnetostrictive displacement gauges. The wireless composite sensors are arranged on each caisson foundation. The intelligent detection terminal can obtain the data of the magnetostrictive displacement gauges and wireless composite sensors in real time. After the data is transmitted to the platform, the changes of each caisson foundation in space can be monitored in real time through calculation. The real-time monitoring of the spatial deformation of the underwater discontinuous caisson foundation is realized, avoiding the situation where abnormal spatial deformation of the caisson foundation cannot be detected, and ensuring the safety of the whole process construction of the superstructure. Description of the Drawings

[0019] Figure 1 is a schematic diagram of a spatial rectangular coordinate system of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention; Figure 2 is a schematic installation diagram of a magnetostrictive displacement gauge of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention; Figure 3 is a front view of the on-site layout for only measuring the settlement value of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention; Figure 4 is a top view of the on-site layout for only measuring the settlement value of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention; Figure 5 is a top view of the on-site layout for only measuring the horizontal displacement value of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention; Figure 6 is a front view of the on-site layout for only measuring the horizontal displacement value of a discontinuous caisson foundation spatial deformation measurement system provided by an embodiment of the present invention. Detailed Embodiments

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] refer to Figures 1 to 6 As shown, the first embodiment of the present invention discloses a discontinuous caisson foundation spatial deformation measurement system, which includes: a cloud platform, a magnetostrictive displacement meter assembly, and a wireless composite sensor assembly, wherein a permanent building structure and a plurality of caisson foundations are connected by using the magnetostrictive displacement meter assembly, and the wireless composite sensor assembly is arranged on the caisson foundation; The cloud platform is configured to implement the following steps by executing a computer program stored therein: Obtaining the vertical relative displacement of the caisson foundation and the horizontal relative displacement of the caisson foundation collected by the magnetic displacement meter assembly; Acquiring angle information collected by the wireless composite sensor assembly; The spatial deformation calculation is performed on the vertical relative displacement, horizontal relative displacement and angle information according to a preset formula to generate a settlement value and a horizontal displacement value.

[0022] Preferably, the angle information includes angle data between the caisson foundation and the xy plane, xz plane and yz plane.

[0023] Preferably, the magnetostrictive displacement meter assembly includes a first magnetostrictive displacement meter and a second magnetostrictive displacement meter, the number of which is the same as that of the caisson foundations. The first magnetostrictive displacement meter is arranged on the upper side of the first end surface of the caisson foundation, and the second magnetostrictive displacement meter is arranged on the lower side of the first end surface of the caisson foundation. The first magnetostrictive displacement meter is configured to collect the vertical relative displacement of the caisson foundation, and the second magnetostrictive displacement meter is configured to collect the horizontal relative displacement of the caisson foundation.

[0024] Preferably, the first magnetostrictive displacement meter and the second magnetostrictive displacement meter are configured to detect the relative deformation between two objects through the relative position change between the magnetic ring 1 and the top sensor 2 .

[0025] Preferably, the first end face of the caisson foundation is the other side facing away from the sea.

[0026] Preferably, the wireless composite sensor assembly includes the same number of wireless composite sensors as the caisson foundations, and the wireless composite sensors are arranged on the caisson foundations, and the wireless composite sensors are configured to detect the angle change between the top surface of the caisson foundation and the constructed coordinate axes xy plane, xz plane and yz plane.

[0027] Preferably, the caisson foundation is on the other side away from the sea.

[0028] Preferably, the permanent building structure is a building structure that is considered not to undergo relative deformation and horizontal deformation after experiencing historical settlement for a preset time.

[0029] Please refer to Figure 1 , in this embodiment, the first caisson foundation is connected to the permanent building structure by a magnetostrictive displacement gauge, and the other caisson foundations are also connected by magnetostrictive displacement gauges. Wireless composite sensors are arranged on each caisson foundation. The intelligent detection terminal obtains the data of the magnetostrictive displacement gauges and wireless composite sensors in real time and transmits the data to the platform.

[0030] Specifically, a space rectangular coordinate system is established with the midpoint on the side of the permanent building structure close to the caisson foundation as the origin. The structures are connected by magnetostrictive displacement gauges, and the relative displacement between the two connected points can be measured. The caisson foundation is equipped with wireless composite sensors, and the initial value is calibrated to 0° during installation. The intelligent detection terminal monitors the data of the angles between the caisson foundation and the xy plane, xz plane, and yz plane in real time, as well as the values of the magnetostrictive displacement gauges, and transmits the data to the platform. It effectively solves the problem in the prior art that the spatial deformation of discontinuous caisson foundations cannot be monitored in real time, and solves the problem that the spatial deformation of the caisson foundation cannot be known during the whole process of the construction of the superstructure of the caisson foundation, ensuring the safety of construction and buildings.

[0031] Among them, the permanent building structure is a building structure that can be considered not to undergo relative deformation and horizontal deformation after experiencing historical settlement for a certain time. The magnetostrictive displacement gauge measures the relative deformation between two objects through the relative position change of the magnetic ring 1 and the top sensor 2 (the magnetic ring 1 is relatively large in actual engineering applications and will not be damaged by lateral deformation). The caisson foundation is a reinforced concrete structure. The wireless composite sensor can measure the angle changes between the top surface of the caisson foundation and the xy plane, xz plane, and yz plane of the established coordinate axes. The arrangement positions of the magnetostrictive displacement gauges and wireless composite sensors are on the other side away from the sea and cannot be arranged close to the middle (it will affect the sensors when pouring the superstructure).

[0032] Preferably, the preset formula is:

[0033]

[0034] Among them, is the settlement value at the rightmost end of the upper surface corresponding to the i-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the i-th caisson foundation, is the settlement value at the rightmost end of the upper surface corresponding to the (i - 1)-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the (i - 1)-th caisson foundation, is the angle change between the upper surface of the i-th caisson foundation and the xy plane, is the angular change of the i-th caisson foundation with the yz plane, is the length of the i-th caisson foundation, is the relative vertical displacement obtained by the magnetostrictive displacement gauge connected to the left side of the upper surface of the i-th caisson foundation, is the relative horizontal displacement obtained by the magnetostrictive displacement gauge connected to the left side of the lower surface of the i-th caisson foundation.

[0035] In this embodiment, since the caisson foundation is a rigid body and its surface will not deform, each surface remains in a planar state. Therefore, the rotational situation of the entire caisson foundation in space can be obtained through the rotational situation of the upper surface. Adding the settlement value and horizontal displacement finally obtained through calculation, the change situation of each caisson foundation in space can be obtained. According to the data transmitted to the platform in real time, the spatial deformation situation of each caisson foundation can be calculated. Among them, the settlement value at the rightmost end of each caisson foundation is mainly calculated and the horizontal displacement value at the rightmost end ; The specific formula is: and , is the settlement value at the rightmost end corresponding to the i-th caisson foundation, is the corresponding horizontal displacement value at the rightmost end. The angles between the caisson foundation and the xy plane, xz plane, and yz plane are monitored in real time, as well as the displacement values of the magnetostrictive displacement gauges. Since the caisson foundation is a rigid body and its surface will not deform, each surface remains in a planar state. Therefore, the rotational situation of the entire caisson foundation in space can be obtained through the rotational situation of the upper surface. Adding the settlement value and horizontal displacement finally obtained through calculation, the change situation of each caisson foundation in space can be obtained. According to the data transmitted to the platform in real time, the spatial deformation situation of each caisson foundation can be calculated. The angles between the i-th caisson foundation and the xy plane, xz plane, and yz plane are respectively denoted as , and , the length, width, and height of each caisson foundation are respectively , and , the relative vertical displacement obtained by the magnetostrictive displacement gauge connected to the left side of the caisson foundation is denoted as , and the relative vertical displacement obtained by the magnetostrictive displacement gauge connected to the right side of the caisson foundation is denoted as . The relative horizontal displacement obtained by the magnetostrictive displacement gauge connected to the left side of the caisson foundation is denoted as , and the relative horizontal displacement obtained by the magnetostrictive displacement gauge connected to the right side of the caisson foundation is denoted as . 1 ≤ i ≤ n, where n is the number of caisson foundations. The caisson foundation connected to the permanent building structure is the first caisson foundation, and the one connected to the first caisson foundation is the second caisson foundation, and so on. It should be noted that the real-time spatial deformation of each caisson foundation can be obtained according to the transmitted data. The calculation results are not limited to the settlement value and the horizontal displacement value at the rightmost end of each caisson foundation. Since these two data are representative, the above formulas are used to calculate and output these values of each caisson foundation. The vertical direction of the caisson foundation is mainly settlement, so for the convenience of calculation, the vertical downward direction is taken as positive, and the angle is taken as positive in the counterclockwise direction. In the space rectangular coordinate system, the method of calculating the length is not unique, and it can also be calculated through other side lengths and angles.

[0036] In summary, the discontinuous caisson foundation spatial deformation measurement system described above includes magnetostrictive displacement gauges, wireless composite sensors and a cloud platform. The first caisson foundation is connected to the permanent building structure by magnetostrictive displacement gauges, and the remaining caisson foundations are also connected to each other by magnetostrictive displacement gauges. The wireless composite sensors are arranged on each caisson foundation. The intelligent detection terminal obtains the data of the magnetostrictive displacement gauges and the wireless composite sensors in real time. After the data is transmitted to the platform, the changes of each caisson foundation in space can be monitored in real time according to the calculation. The real-time monitoring of the spatial deformation of the underwater discontinuous caisson foundation is realized, the situation that the abnormal spatial deformation of the caisson foundation cannot be known is avoided, and the safety of the whole process construction of the upper structure is ensured.

[0037] The above is the preferred implementation manner of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A discontinuous caisson foundation spatial deformation measurement system, characterized in that include: A cloud platform, a magnetic displacement meter assembly, and a wireless composite sensor assembly, wherein the permanent building structure and a plurality of caisson foundations are connected by using the magnetic displacement meter assembly, and the wireless composite sensor assembly is arranged on the caisson foundation; The cloud platform is configured to implement the following steps by executing a computer program stored therein: Obtaining the relative displacement of the caisson foundation in the vertical direction and the relative displacement of the caisson foundation in the horizontal direction collected by the magnetostrictive displacement meter assembly; Acquiring angle information collected by the wireless composite sensor assembly; The spatial deformation calculation is performed on the vertical relative displacement, horizontal relative displacement and angle information according to a preset formula to generate a settlement value and a horizontal displacement value.

2. The discontinuous caisson foundation spatial deformation measurement system according to claim 1, characterized in that The angle information includes angle data between the caisson foundation and the xy plane, the xz plane and the yz plane.

3. The discontinuous caisson foundation spatial deformation measurement system according to claim 1, characterized in that, The preset formula is: wherein, is the settlement value at the rightmost end of the upper surface corresponding to the i-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the i-th caisson foundation, is the settlement value at the rightmost end of the upper surface corresponding to the (i - 1)-th caisson foundation, is the horizontal displacement value at the rightmost end of the lower surface corresponding to the (i - 1)-th caisson foundation, is the angle change between the upper surface of the i-th caisson foundation and the xy plane, is the angle change between the i-th caisson foundation and the yz plane, is the length of the i-th caisson foundation, is the relative displacement in the vertical direction obtained by the magnetostrictive displacement gauge connected to the left side of the upper surface of the i-th caisson foundation, is the relative displacement in the horizontal direction obtained by the magnetostrictive displacement gauge connected to the left side of the lower surface of the i-th caisson foundation.

4. The discontinuous caisson foundation spatial deformation measurement system according to claim 1, characterized in that, The magnetostrictive displacement meter assembly includes the same number of first magnetostrictive displacement meters and second magnetostrictive displacement meters as the caisson foundations, wherein the first magnetostrictive displacement meter is arranged on the upper side of the first end surface of the caisson foundation, and the second magnetostrictive displacement meter is arranged on the lower side of the first end surface of the caisson foundation, the first magnetostrictive displacement meter is arranged to collect the vertical relative displacement of the caisson foundation, and the second magnetostrictive displacement meter is arranged to collect the horizontal relative displacement of the caisson foundation.

5. The discontinuous caisson foundation spatial deformation measurement system according to claim 4, characterized in that The first magnetostrictive displacement meter and the second magnetostrictive displacement meter are configured to detect relative deformation between two objects through a relative position change between the magnetic ring and the top sensor.

6. The discontinuous caisson foundation space deformation measurement system according to claim 4, characterized in that, The first end face of the caisson foundation is the other side facing away from the sea.

7. A discontinuous caisson foundation spatial deformation measurement system according to claim 1, characterized in that, The wireless composite sensor assembly includes the same number of wireless composite sensors as the caisson foundations. The wireless composite sensors are arranged on the caisson foundations and are configured to detect the angle change between the top surface of the caisson foundation and the constructed coordinate axes xy plane, xz plane and yz plane.

8. A discontinuous caisson foundation spatial deformation measurement system according to claim 1, characterized in that, The caisson foundation is on the other side away from the sea.

9. The discontinuous caisson foundation space deformation measurement system according to claim 1, characterized in that, The permanent building structure is a building structure that is considered not to experience relative deformation and horizontal deformation after experiencing historical settlement for a preset time.

10. The discontinuous caisson foundation space deformation measurement system according to claim 1, characterized in that, The caisson foundation adopts a reinforced concrete structure.

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