Experimental box for high-precision simulation of shield crossing construction bridge pile deformation
By introducing shielding plates, trapezoidal components, bottom plates, and deceleration rubber layers into the experimental chamber, the problems of difficult cleaning and uneven soil distribution were solved, achieving efficient cleaning and long service life of the equipment, and ensuring the accuracy and stability of the experiment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-31
AI Technical Summary
The existing high-precision simulation test chamber for bridge pile deformation during shield tunneling is difficult to clean after each test, which leads to structural damage to the test chamber, deviation in test results, and affects the accuracy of the test and the life of the equipment. In addition, the uneven distribution of soil layers affects the stability of the test.
The system employs a structural design that includes shielding plates, trapezoidal components, a bottom plate, and a deceleration rubber layer. By using shielding plates to block through-holes, trapezoidal components to restrict the sliding of shielding plates, a bottom plate to quickly clean the simulated soil, and a deceleration rubber layer to reduce wear, the system achieves uniform distribution of simulated soil and efficient cleaning of the equipment.
It improves the cleaning efficiency of the experimental chamber and the service life of the equipment, ensures the uniformity of soil layer distribution, enhances the accuracy and stability of the experiment, and reduces research costs and time costs.
Smart Images
Figure CN224066789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of model testing device technology, and in particular to a high-precision simulation test box for bridge pile deformation during shield tunneling construction. Background Technology
[0002] The high-precision simulated shield tunneling construction bridge pile deformation test chamber is a specialized device used to study the impact of shield tunneling construction on bridge piles. The test chamber typically consists of a model soil, a simulated shield machine, and simulated bridge piles. The model soil simulates real geological conditions, the simulated shield machine simulates various actions and parameters during shield construction, and the simulated bridge piles are used to study the deformation of the bridge piles during shield tunneling.
[0003] In existing technologies, cleaning the residual soil inside the experimental chamber after each experiment is extremely difficult. Due to the structural characteristics of the deformation experimental chamber and the distribution characteristics of the soil during the experiment, this soil often adheres to various corners and crevices of the experimental chamber. This not only requires researchers to spend a lot of time and energy on meticulous cleaning, but also affects the accuracy and reliability of subsequent experiments due to incomplete cleaning. For example, residual soil can change the environmental conditions inside the experimental chamber, such as affecting the distribution and density of the soil layers, which can lead to deviations in experimental results. This situation greatly reduces the efficiency of the entire experimental process, preventing researchers from investing more time and energy in core experimental research. Furthermore, it is difficult to completely remove the adhesion of microparticles, and repeated cleaning leads to wear on the inner wall of the chamber (especially metal materials), further aggravating the soil adhesion problem and creating a vicious cycle. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision simulation test chamber for bridge pile deformation during shield tunneling construction.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-precision simulated shield tunneling construction bridge pile deformation test box, comprising a test box body, through holes at both ends of the test box body, simulated soil on the inner wall of the test box body, bridge piles on the inner wall of the simulated soil, a pier surface fixed to the top of the bridge piles, a bridge pier fixed to the top of the pier surface, a bridge deck fixed to the surface of the bridge pier, a vertical sliding groove on the inner wall of the test box body, an L-shaped long rod slidably connected to the inner wall of the vertical sliding groove, a bottom plate fixed to the bottom of the L-shaped long rod, a fixing chain fixed to the top of the L-shaped long rod, a fixing connecting plate fixed to one end of the fixing chain, and a lifting ring fixed to the top of the fixing connecting plate.
[0006] Preferably, the inner wall of the experimental chamber is provided with a rectangular sliding groove, and a shielding plate is slidably connected to the inner wall of the rectangular sliding groove. A top ring is fixed to the top of the shielding plate, and an outer ring is fixed to one side of the experimental chamber. In the prior art, the deformation experimental chamber has a through-hole design. When it is necessary to put soil into the experimental chamber, the soil can easily leak out from the through-hole. This will cause the soil to not be evenly distributed in the experimental chamber as expected, making it difficult to form a tight soil layer structure. The loose soil layer will further affect the accuracy and stability of subsequent experiments, because in the shield tunneling construction simulation, the compactness of the soil layer is crucial for simulating real geological conditions and observing the deformation of bridge piles. If there are gaps in the soil layer, or Loose areas cannot accurately reflect the actual impact of tunnel boring machine (TBM) construction on bridge piles, rendering experimental data unreliable and increasing the difficulty and uncertainty of research. To address this issue, this invention employs a shielding plate installation method. Before placing simulated soil into the experimental chamber, the shielding plate is slid into a rectangular groove, blocking the through-holes and preventing leakage of the simulated soil while simultaneously compressing it. When the simulated TBM needs to enter, the operator pulls the top ring along the chain fixed to the outer ring, causing the shielding plate to move away along the rectangular groove. During this process, the simulated soil adhering to the shielding plate is scraped off the surface of the experimental chamber, ensuring the shielding plate remains clean after use and improving the accuracy of the equipment.
[0007] Preferably, trapezoidal grooves are provided on both sides of the inner wall of the rectangular sliding groove, and trapezoidal components are slidably connected to the inner wall of the trapezoidal grooves. One end of the trapezoidal component is fixed to one end of the shielding plate. In the prior art, when the shielding plate slides into the rectangular sliding groove or when the experimental box is placed with simulated soil, the shielding plate is prone to move left and right on the inner wall of the rectangular sliding groove, causing friction between components and resulting in a decrease in strength. Moreover, when the simulated tunnel boring machine enters the experimental box and squeezes the simulated soil, the experimental box with reduced strength is easily damaged by the pressure of the simulated soil, resulting in a reduction in the service life of the equipment. Once the experimental box is damaged, it will not only affect the normal progress of the current experiment, but also require a lot of time and resources to repair or replace it. This greatly reduces the overall service life of the equipment, increases research costs and time costs, and is not conducive to the smooth progress and in-depth advancement of related scientific research. To address these problems, this utility model solves the problem by installing trapezoidal components. Through the cooperation between the trapezoidal components and the trapezoidal grooves, the running trajectory of the shielding plate is restricted, preventing its left and right sliding and wear, thereby improving the service life of the equipment.
[0008] Preferably, the bottom of the inner wall of the rectangular sliding groove is provided with a sink groove, which restricts the bottom of the shielding plate by the sink groove, prevents the bottom from shifting when pressing, and improves the effect of equipment use.
[0009] Preferably, an arc soil component is fixed to the surface of the L-shaped long rod, which enables the arc soil component to scoop out the simulated soil in the vertical chute when the L-shaped long rod is pulled out, thereby improving the user experience.
[0010] Preferably, the inner wall of the simulated soil is provided with isolation piles, and a fixed support rod is fixed to the surface of the isolation pile. The surface of the fixed support rod is fixed to the surface of the bridge pile, which realizes the purpose of increasing the number of isolation piles to increase the sample size of the control experiment and thus improves the accuracy of the equipment.
[0011] Preferably, the bottom of the inner wall of the experimental chamber is covered with a deceleration rubber layer, which increases the friction between the deceleration rubber layer and the side of the bottom plate, so that the components gradually decelerate and thus improve the service life of the equipment.
[0012] Beneficial effects:
[0013] 1. In existing technologies, cleaning the residual soil inside the experimental chamber after each experiment is extremely difficult. Due to the structural characteristics of the deformation experimental chamber and the distribution characteristics of the soil during the experiment, this soil often adheres to various corners and crevices of the chamber. This not only requires researchers to spend a lot of time and effort on meticulous cleaning, but also affects the accuracy and reliability of subsequent experiments due to incomplete cleaning. For example, residual soil can alter the environmental conditions inside the experimental chamber, such as affecting the distribution and density of the soil layers, leading to deviations in experimental results. This situation significantly reduces the efficiency of the entire experimental process, preventing researchers from devoting more time and energy to core experimental research. Furthermore, it is difficult to completely remove the adhesion of microparticles, and repeated cleaning leads to… The wear and tear on the inner wall of the test chamber exacerbates soil adhesion, creating a vicious cycle. To address this issue, this invention employs a bottom-filling plate. After testing, the crane and lifting ring are secured, and the crane is then activated to pull the fixed connecting plate upwards. This causes the fixed chain to gradually pull the L-shaped long rod out along the vertical slide. As the bottom-filling plate moves from bottom to top, it scoops the simulated soil out of the test chamber. This allows staff to quickly remove the simulated soil from the test chamber after the simulation, facilitating cleaning and preparation. It also effectively removes simulated soil adhering to the inner wall of the test chamber. Furthermore, the coordination between the L-shaped long rod and the vertical slide effectively prevents the bottom-filling plate from excessively scraping the inner wall of the test chamber, thus preventing wear and tear and improving work efficiency.
[0014] 2. In existing technologies, deformation test chambers have through-hole designs. When soil needs to be added to the test chamber, it easily leaks out due to the through-holes. This prevents the soil from being evenly distributed within the test chamber as expected, making it difficult to form a dense soil layer structure. The loose soil layer further affects the accuracy and stability of subsequent experiments. During shield tunneling simulation, the density of the soil layer is crucial for simulating real geological conditions and observing the deformation of bridge piles. If the soil layer has gaps or loose areas, it cannot accurately reflect the actual impact of shield tunneling on the bridge piles, making the experiment... The loss of data reference value increases the difficulty and uncertainty of research. To address this issue, this utility model solves the problem by installing a shielding plate. Before placing simulated soil into the experimental chamber, the shielding plate is slid into a rectangular groove, blocking the through-hole and preventing the simulated soil from leaking out. It is also compressed. When the simulated tunnel boring machine needs to enter, the operator pulls the top ring along the chain fixed on the outer ring, causing the shielding plate to move away along the rectangular groove. During the movement, the simulated soil adhering to the surface of the shielding plate is scraped off the surface of the experimental chamber, ensuring that the shielding plate remains clean after use and improving the accuracy of the equipment.
[0015] 3. In the prior art, when the shielding plate slides into the rectangular chute or when the experimental chamber is filled with simulated soil, the shielding plate tends to move left and right on the inner wall of the rectangular chute, causing friction between components and resulting in a decrease in strength. Furthermore, when the simulated tunnel boring machine enters the experimental chamber and compresses the simulated soil, the experimental chamber, with its reduced strength, is easily damaged by the pressure of the simulated soil, leading to a reduction in the equipment's service life. Once the experimental chamber is damaged, it not only affects the normal progress of the current experiment but also requires a significant amount of time and resources for repair or replacement. This greatly reduces the overall service life of the equipment, increases research and time costs, and is detrimental to the smooth progress and in-depth advancement of related scientific research. To address these issues, this utility model solves the problem by installing trapezoidal components. Through the cooperation between the trapezoidal components and the trapezoidal groove, the running trajectory of the shielding plate is restricted, preventing its left and right slippage and wear, thereby improving the service life of the equipment. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a cross-sectional view of the experimental chamber of this utility model;
[0018] Figure 3 This is a cross-sectional view of the shielding plate of this utility model;
[0019] Figure 4 This is a cross-sectional view of the deceleration adhesive layer of this utility model;
[0020] Figure 5 This is a cross-sectional view of the settling tank of this utility model;
[0021] Figure 6 This is a cross-sectional view of the bottom plate of this utility model.
[0022] Legend:
[0023] 1. Experimental chamber; 101. Simulated soil; 102. Bridge pile; 103. Pier surface; 104. Bridge pier; 105. Bridge deck; 106. Through hole; 2. Vertical chute; 201. Bottom plate; 202. L-shaped long rod; 203. Fixing chain; 204. Fixing connecting plate; 205. Lifting ring; 3. Shielding plate; 301. Rectangular chute; 302. Top ring; 303. Outer ring; 4. Trapezoidal groove; 401. Trapezoidal component; 5. Settling trench; 6. Arc soil component; 7. Isolation pile; 701. Fixing support rod; 8. Deceleration rubber layer. Detailed Implementation
[0024] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.
[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:
[0027] Reference Figure 1-6The high-precision simulated shield tunneling construction bridge pile deformation test box includes a test box 1. The test box 1 has through holes 106 at both ends. The inner wall of the test box 1 is provided with simulated soil 101. The inner wall of the simulated soil 101 is provided with bridge piles 102. The top of the bridge piles 102 is fixed with a pier surface 103. The top of the pier surface 103 is fixed with a bridge pier 104. The surface of the bridge pier 104 is fixed with a bridge deck 105. The inner wall of the test box 1 has a vertical sliding groove 2. The inner wall of the vertical sliding groove 2 is slidably connected with an L-shaped long rod 202. The bottom of the L-shaped long rod 202 is fixed with a bottom plate 201. The top of the L-shaped long rod 202 is fixed with a fixing chain 203. One end of the fixing chain 203 is fixed with a fixing connecting plate 204. The top of the fixing connecting plate 204 is fixed with a lifting ring 205. The inner wall of the experimental chamber 1 is provided with a rectangular sliding groove 301, and a shielding plate 3 is slidably connected to the inner wall of the rectangular sliding groove 301. A top ring 302 is fixed to the top of the shielding plate 3, and an outer ring 303 is fixed to one side of the experimental chamber 1. The deformation experimental chamber has a through hole 106. When it is necessary to put soil into the experimental chamber, the soil can easily leak out from the through hole 106. This will cause the soil to not be evenly distributed in the experimental chamber as expected, making it difficult to form a tight soil layer structure. The loose soil layer will further affect the accuracy and stability of subsequent experiments, because the compactness of the soil layer is crucial for simulating real geological conditions and observing the deformation of the bridge pile 102 during the shield tunneling construction simulation. If there are gaps or loose areas in the soil layer, The inability to accurately reflect the actual impact of shield tunneling on bridge piles 102 renders the experimental data unreliable, increasing the difficulty and uncertainty of the research. This is addressed by installing a shielding plate 3. Before placing simulated soil 101 into the experimental chamber 1, the shielding plate 3 is slid into the rectangular groove 301, blocking the through-hole 106 and preventing leakage of the simulated soil 101. Simultaneously, the soil is compressed. When the simulated shield machine needs to enter, the operator pulls the top ring 302 along the chain fixed to the outer ring 303, causing the shielding plate 3 to move away along the rectangular groove 301. During this movement, the simulated soil 101 adhering to the surface of the shielding plate 3 is scraped off the surface of the experimental chamber 1, ensuring the shielding plate 3 remains clean after use and improving the accuracy of the equipment.
[0028] Trapezoidal grooves 4 are provided on both sides of the inner wall of the rectangular sliding groove 301. Trapezoidal components 401 are slidably connected to the inner wall of the trapezoidal grooves 4. One end of the trapezoidal component 401 is fixed to one end of the shielding plate 3. When the shielding plate 3 slides into the rectangular sliding groove 301 or when the experimental chamber 1 is placed with simulated soil 101 and comes into contact with the shielding plate 3, the shielding plate 3 is prone to moving left and right on the inner wall of the rectangular sliding groove 301, causing friction between the components and resulting in a decrease in strength. Furthermore, when the simulated tunnel boring machine enters the experimental chamber 1 and squeezes the simulated soil 101, the experimental chamber 1, with its reduced strength, is easily damaged by the pressure of the simulated soil 101, causing equipment failure. The reduced lifespan of the equipment is a significant drawback. Damage to the experimental chamber 1 not only disrupts the current experiment but also requires substantial time and resources for repair or replacement, drastically reducing the overall lifespan of the equipment and increasing research and time costs. This hinders the smooth progress and in-depth advancement of related scientific research. The solution is to install a trapezoidal component 401. The fit between the trapezoidal component 401 and the trapezoidal groove 4 restricts the trajectory of the shielding plate 3, preventing lateral slippage and wear, thus extending the equipment's lifespan. A recessed groove 5 is formed at the bottom of the inner wall of the rectangular chute 301, restricting the bottom of the shielding plate 3 and preventing bottom displacement during pressure, thereby improving the equipment's usability. An arc-shaped soil component 6 is fixed to the surface of the L-shaped rod 202. When the L-shaped rod 202 is pulled out of the vertical chute 2, the arc-shaped soil component 6 removes the simulated soil 101 from the vertical chute 2, improving the user experience. An isolation pile 7 is embedded in the inner wall of the simulated soil 101. A fixing support rod 701 is fixed to the surface of the isolation pile 7, and the surface of the fixing support rod 701 is fixed to the surface of the bridge pile 102. This increases the sample size for the control experiment by adding the isolation pile 7, thereby improving the accuracy of the equipment. The bottom of the inner wall of the experimental chamber 1 is covered with a deceleration rubber layer 8, which increases the friction between the deceleration rubber layer 8 and the side of the bottom plate 201, causing the components to gradually decelerate and thus improving the service life of the equipment.
[0029] The working principle of this utility model is as follows: After the staff completes the test, the crane and lifting ring 205 are fixed. Then, the crane is started to pull the fixed connecting plate 204 upward, so that the fixed chain 203 gradually pulls the L-shaped long rod 202 out along the vertical slide 2. When the bottom plate 201 moves from bottom to top, it scoops the simulated soil 101 out of the experimental box 1. This allows the staff to quickly clean out the simulated soil 101 in the experimental box 1 after the simulation, which facilitates cleaning and preparation. At the same time, it can better clean the simulated soil 101 adhering to the inner wall of the experimental box 1. In addition, due to the cooperation between the L-shaped long rod 202 and the vertical slide 2, This effectively prevents the bottom plate 201 from excessively scraping the inner wall of the experimental chamber 1, thus preventing wear on the inner wall of the experimental chamber 1. Before putting the simulated soil 101 into the experimental chamber 1, the staff slides the shielding plate 3 into the rectangular sliding groove 301, so that the shielding plate 3 blocks the through hole 106, preventing the simulated soil 101 from leaking out and being compressed. When the simulated tunnel boring machine needs to enter, the staff pulls the top ring 302 along the iron chain fixed on the outer ring 303, so that the shielding plate 3 leaves along the rectangular sliding groove 301. During the leaving process, the simulated soil 101 adhering to the surface of the shielding plate 3 is scraped off the surface of the experimental chamber 1, so that the shielding plate 3 can remain clean after use.
[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-precision simulated shield tunneling construction bridge pile deformation test box, comprising a test box body (1), wherein through holes (106) are provided at both ends of the test box body (1), simulated soil (101) is provided on the inner wall of the test box body (1), bridge piles (102) are provided on the inner wall of the simulated soil (101), a pier surface (103) is fixed on the top of the bridge pile (102), a bridge pier (104) is fixed on the top of the pier surface (103), and a bridge deck (105) is fixed on the surface of the bridge pier (104), characterized in that: The vertical sliding groove (2) is arranged on the inner wall of the experimental box (1), the L-shaped long rod (202) is slidably connected to the inner wall of the vertical sliding groove (2), the bottom plate (201) is fixed to the bottom of the L-shaped long rod (202), the fixed chain (203) is fixed to the top of the L-shaped long rod (202), one end of the fixed chain (203) is fixedly connected with the fixed connecting plate (204), and the fixed connecting plate (204) is fixedly connected with the lifting ring (205) on the top.
2. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 1, characterized in that: The experimental box (1) is provided with a vertical sliding groove (2) on the inner wall, and the L-shaped long rod (202) is slidably connected to the inner wall of the vertical sliding groove (2).
3. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 2, characterized in that: The vertical sliding groove (2) is arranged on the inner wall of the experimental box (1), the L-shaped long rod (202) is slidably connected to the inner wall of the vertical sliding groove (2), the bottom plate (201) is fixed to the bottom of the L-shaped long rod (202), the fixed chain (203) is fixed to the top of the L-shaped long rod (202), one end of the fixed chain (203) is fixedly connected with the fixed connecting plate (204), and the fixed connecting plate (204) is fixedly connected with the lifting ring (205) on the top.
4. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 2, characterized in that: The vertical sliding groove (2) is arranged on the inner wall of the experimental box (1), and the L-shaped long rod (202) is slidably connected to the inner wall of the vertical sliding groove (2).
5. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 1, characterized in that: The L-shaped long rod (202) is fixedly connected with the arc-shaped piece (6).
6. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 1, characterized in that: The simulation soil (101) is provided with the isolation pile (7) embedded in the inner wall, the fixed supporting rod (701) is fixedly connected to the surface of the isolation pile (7), and the surface of the fixed supporting rod (701) is fixedly connected with the surface of the bridge pile (102).
7. The high-precision analog shield crossing construction bridge pile deformation experiment box according to claim 1, characterized in that: The experimental box (1) is provided with a vertical sliding groove (2) on the inner wall, and the L-shaped long rod (202) is slidably connected to the inner wall of the vertical sliding groove (2).