Underground structure bottom plate pressure sensor embedded pressure equalizing waterproof structure
By filling the soil pit with fine sand and fixing the buried pressure sensor, combined with the waterproof design of flexible pressure equalization plate and wiring pipeline, the accuracy and waterproofing problems of underground structure bottom plate pressure measurement in high-pressure aquatic formations are solved, and stable and accurate pressure measurement is achieved.
Patent Information
- Application Number
- CN202421590271.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-05
AI Technical Summary
It is difficult to accurately measure the pressure distribution of underground structure base plates in high-pressure aquatic formations, and traditional methods are prone to damage to underground structures due to water leakage.
Design an underground structure bottom plate pressure sensor embedded in pressure equalization and waterproof structure, including filling the soil pit with fine sand and fixing the embedded pressure sensor, fitting the underground structure bottom plate through a flexible pressure equalization plate, leading out the transmission line using wiring pipes and filling it with concrete to prevent water.
Accurate measurement of pressure sensors is achieved, bottom plate leakage and underground structure damage caused by high water pressure are avoided, and the stability and waterproof performance of pressure sensors are ensured.
Smart Images
Figure CN222878772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit pressure measurement, in particular to an underground structure bottom plate pressure sensor buried equalizing pressure waterproof structure. Background Art
[0002] The pressure distribution of the underground structure floor has always been a very concerned issue in underground engineering. Using pressure sensors to measure the pressure distribution of underground structures has always been a commonly used method in engineering. However, the stiffness difference between the pressure sensor and the soil layer often leads to smaller measured values. Underestimation of the pressure distribution will lead to reduced structural safety. In addition, as cities develop, the buried depth of underground structures becomes deeper and deeper, and they inevitably pass through water-bearing strata, which brings difficulties to the measurement of the floor pressure of underground structures. In high-pressure water-bearing strata, when using traditional methods to measure the floor pressure, it is easy for the underground structure to be damaged due to water leakage at the sensor wiring port. Therefore, how to accurately measure the floor pressure distribution of underground structures in high-pressure water-bearing strata is a problem that needs to be solved urgently. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a buried pressure-equalizing waterproof structure for an underground structure bottom plate pressure sensor, which solves the problem of poor accuracy in pressure measurement of the existing underground structure bottom plate.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] Provided is a buried equalizing waterproof structure for an underground structure bottom plate pressure sensor, comprising a soil pit opened below the underground structure bottom plate, the soil pit being filled with fine sand and having a pressure sensor fixedly buried therein, the pressure sensor being in close contact with the bottom of the underground structure bottom plate via a flexible equalizing plate, the transmission line of the pressure sensor being led out via a wiring conduit and electrically connected to a data acquisition terminal, the wiring conduit penetrating the soil layer and the underground structure bottom plate.
[0006] Furthermore, a support member is buried in the earth pit, and the support member includes a placement box, and the pressure sensor is limitedly placed on the placement box. A plurality of support rods for stabilizing the pressure sensor are arranged at the bottom of the placement box.
[0007] Furthermore, one ends of the plurality of support rods are fixed at the bottom center of the placement box, and the plurality of support rods are inclined in all directions with the vertical line at the bottom center of the placement box as a reference.
[0008] Furthermore, a plurality of support plates are arranged at intervals in the extension direction of the support rod.
[0009] Furthermore, waterproof plugs are provided at the ports of the wiring conduits.
[0010] Furthermore, the wiring conduit is filled with concrete.
[0011] Furthermore, the vertical projection area of the flexible pressure equalizing plate is larger than the vertical projection area of the pressure sensor.
[0012] Furthermore, the depth of the soil pit is 5-8 times the thickness of the pressure sensor.
[0013] The beneficial effects of the utility model are:
[0014] 1. The force-bearing surface of the pressure sensor of this scheme is closely attached to the bottom of the underground structure floor through a flexible pressure-equalizing plate, so that the pressure transmitted by the underground structure floor can be evenly distributed on the pressure sensor, so that it can accurately measure the pressure.
[0015] 2. This solution uses wiring pipes to lead out the pressure sensor transmission line. At the same time, targeted waterproof measures are taken for the wiring pipes. By setting waterproof plugs at the ports of the wiring pipes and filling the wiring pipes with concrete, the wiring pipes are sealed to avoid floor leakage and underground structure damage caused by high water pressure.
[0016] 3. This solution stabilizes the pressure sensor in the soil layer under the shear force of several support rods, support plates and the soil layer, thereby preventing the pressure sensor from failing due to settlement or displacement in the soil layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of a pressure-equalizing waterproof structure for burying pressure sensors in the base plate of an underground structure.
[0018] Figure 2 It is a schematic diagram of the structure of the support.
[0019] Among them, 1. underground structure base plate, 2. earth pit, 3. fine sand, 4. pressure sensor, 5. flexible pressure equalizing plate, 6. transmission line, 7. wiring pipe, 8. placement box, 9. support rod, 10. support plate, 11. waterproof plug, 12. data acquisition terminal. DETAILED DESCRIPTION
[0020] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.
[0021] like Figure 1 and Figure 2As shown, the buried pressure-equalizing waterproof structure of the underground structure bottom plate pressure sensor of the present scheme includes a pit 2 opened below the underground structure bottom plate 1, the pit 2 is filled with fine sand 3 and a pressure sensor 4 and a support for stabilizing the pressure sensor 4 are fixedly buried, the pressure sensor 4 is tightly attached to the bottom of the underground structure bottom plate 1 through a flexible pressure-equalizing plate 5, the transmission line 6 of the pressure sensor 4 is led out through a wiring pipe 7 and electrically connected to the data acquisition terminal 12, and the wiring pipe 7 runs through the soil layer and the underground structure bottom plate 1; the force-bearing surface of the pressure sensor 4 of the present scheme is tightly attached to the bottom of the underground structure bottom plate 1 through the flexible pressure-equalizing plate 5, so that the pressure transmitted by the underground structure bottom plate 1 can be evenly distributed on the pressure sensor 4, so that it can accurately measure the magnitude of the pressure.
[0022] During the design, the supporting member includes a placement box 8, and the pressure sensor 4 is limitedly placed on the placement box 8. A number of supporting rods 9 for stabilizing the pressure sensor 4 are arranged at the bottom of the placement box 8; one end of the several supporting rods 9 are fixed at the bottom center of the placement box 8, and the several supporting rods 9 are inclined around with the vertical line at the bottom center of the placement box 8 as a reference, and a number of supporting plates 10 are arranged at intervals in the extension direction of the supporting rods 9; in this scheme, under the shear force of the several supporting rods 9, the supporting plates 10 and the soil layer, the pressure sensor 4 is stabilized in the soil layer, thereby avoiding the failure of the pressure sensor 4 due to settlement and displacement in the soil layer.
[0023] This solution realizes the lead-out of the transmission line 6 of the pressure sensor 4 through the wiring pipe 7, and at the same time takes targeted waterproof measures for the wiring pipe 7. A waterproof plug 11 is set at the port of the wiring pipe 7, and concrete is filled in the wiring pipe 7, so as to achieve the sealing of the wiring pipe 7 and avoid bottom plate leakage and underground structure damage caused by high water pressure.
[0024] Preferably, the vertical projection area of the flexible pressure equalizing plate 5 is larger than the vertical projection area of the pressure sensor 4, so that the pressure sensor 4 can be tightly attached to the flexible pressure equalizing plate 5; the depth of the pit 2 is 5-8 times the thickness of the pressure sensor 4, avoiding the risk of settlement and displacement of the pressure sensor 4 due to the pit 2 being too large.
Claims
1. A pressure sensor buried in the bottom plate of an underground structure, characterized in that: It includes an earth pit opened below the base plate of the underground structure, the earth pit is filled with fine sand and a pressure sensor is fixedly buried therein, the pressure sensor is tightly attached to the bottom of the base plate of the underground structure via a flexible pressure equalizing plate, the transmission line of the pressure sensor is led out via a wiring pipe and electrically connected to a data acquisition terminal, the wiring pipe runs through the soil layer and the base plate of the underground structure.
2. The buried pressure equalizing waterproof structure for underground structure bottom plate pressure sensor according to claim 1 is characterized in that: A supporting member is buried in the soil pit, and the supporting member includes a placement box. The pressure sensor is limitedly placed on the placement box, and a plurality of supporting rods for stabilizing the pressure sensor are arranged at the bottom of the placement box.
3. The buried pressure-equalizing waterproof structure for underground structure bottom plate pressure sensors according to claim 2 is characterized in that: One ends of the plurality of support rods are all fixed at the bottom center of the placement box, and the plurality of support rods are inclinedly arranged in all directions with the vertical line at the bottom center of the placement box as a reference.
4. The buried pressure equalizing waterproof structure for underground structure bottom plate pressure sensor according to claim 3 is characterized in that: A plurality of support plates are arranged at intervals in the extending direction of the support rod.
5. The buried pressure-equalizing waterproof structure for underground structure bottom plate pressure sensors according to claim 1, characterized in that: Waterproof plugs are provided at the ports of the wiring pipes.
6. The buried pressure equalizing waterproof structure for underground structure bottom plate pressure sensor according to claim 1, characterized in that: The wiring conduit is filled with concrete.
7. The buried pressure equalizing waterproof structure for underground structure bottom plate pressure sensor according to claim 1, characterized in that: The vertical projection area of the flexible pressure equalizing plate is larger than the vertical projection area of the pressure sensor.
8. The buried pressure equalizing waterproof structure for underground structure bottom plate pressure sensor according to claim 1, characterized in that: The depth of the soil pit is 5-8 times the thickness of the pressure sensor.