Steel sheet pile retaining wall soil pressure testing device considering influence of intermediate principal stress

Abstract

The utility model discloses a steel sheet pile retaining wall soil pressure testing device considering the influence of medium principal stress, which relates to the field of wall soil pressure and comprises a ground, a model groove is arranged at the top of the ground, an opening and closing component is arranged on the side wall of the model groove, two first steel plates are symmetrically arranged on the inner side wall of the model groove by taking the center of the model groove as the axis, and two second steel plates are symmetrically arranged on the inner side wall of the model groove. A pressure component is arranged at the position, close to the center, of the inner wall of the model groove, an impact component is arranged on the outer wall of the model groove, a fixing component is arranged on the side wall, close to the ground, of the model groove, and a rainwater simulating device is arranged above the model groove and comprises a cover plate arranged above the model groove. A water storage tank is embedded in the side wall of the cover plate, and a plurality of water outlets are embedded in the side wall of the water storage tank. According to the utility model, through the opening and closing part, the pressure part, the impact part, the fixing part and the rainwater simulation device, the soil pressure value under the intermediate principal stress influence and the humid state can be measured.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of wall soil pressure, in particular to a steel sheet pile retaining wall soil pressure testing device taking the influence of intermediate principal stress into consideration. Background Art

[0002] Since steel sheet piles have significant advantages such as fast construction, small footprint, and recyclability, they are widely used in permanent buildings such as docks, retaining walls, and flood dikes, as well as temporary structures such as cofferdams, foundation pits, and flood control. As one of the important loads on steel sheet pile retaining walls, soil pressure has a direct impact on the load transfer and force mechanism of steel sheet pile retaining walls.

[0003] According to the device and method for testing soil pressure of steel sheet pile retaining wall considering the influence of intermediate principal stress provided in the patent document with application number CN201910297312.6, the device includes a steel sheet pile retaining wall, a model groove, an angle control device and a soil pressure monitoring and collection device; the steel sheet pile retaining wall includes four steel sheet piles, two rotatable thin rods and three fixed thin rods, the four steel sheet piles are steel sheet pile one, steel sheet pile two, steel sheet pile three and steel sheet pile four respectively, steel sheet pile one, steel sheet pile two, steel sheet pile three and steel sheet pile four are connected in sequence by a locking structure to form a retaining wall, steel sheet pile one and steel sheet pile four are each fixed in the side wall of the model groove by a fixed thin rod, and an angle control device is respectively installed on the top of the two fixed thin rods located in the side wall of the model groove; the angle control device includes a rotating disk and a connecting rope; the soil pressure monitoring and collection device includes a frequency meter and four soil pressure sensors, and a soil pressure sensor is installed on the retaining side of each steel sheet pile.

[0004] The product in the above patent uses the rotation of the angle control device to pull the rotatable thin rod in the steel sheet pile lock buckle through the connecting rope to cause linear displacement around the bottom, thereby producing tensile and compressive deformation of the steel sheet pile along the central axis of the retaining wall. The deformation of the steel sheet pile at each elevation along the height direction is approximately proportional to the linear displacement of the top of the rotatable thin rod. The linear displacement of the top of the rigid thin rod is equal to the inner ring arc length corresponding to the angular displacement of the angle control device. Through this linkage device, the deformation of the steel sheet pile along the central axis of the retaining wall can be measured. When detecting soil pressure, it is also necessary to detect the soil pressure when the ground is wet in order to accurately measure. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a steel sheet pile retaining wall soil pressure testing device taking into account the influence of intermediate principal stress, so as to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soil pressure test device for a steel sheet pile retaining wall considering the influence of the intermediate principal stress, comprising a ground, a model groove is provided on the top of the ground, an opening and closing component is provided on the side wall of the model groove, two first steel plates are symmetrically provided on the inner side wall of the model groove with the center of the model groove as the axis, a pressure component is provided near the center of the inner wall of the model groove, an impact component is provided on the outer wall of the model groove, a fixing component is provided on the side wall of the model groove close to the ground, and a rainwater simulation device is provided above the model groove;

[0007] The rainwater simulation device includes a cover plate arranged above the model groove, the side wall of the cover plate is embedded with a water storage tank, the side wall of the water storage tank is embedded with multiple water outlets, the top of the cover plate is provided with a water inlet component, the execution end of the water inlet component is provided with a flow component, the execution end of the flow component is provided with a water inlet pipe, and the outer wall of the cover plate is provided with four connecting blocks.

[0008] Preferably, the opening and closing component includes four electric telescopic rods symmetrically arranged on the side walls of the model groove with the center of the model groove as the axis, and the execution ends of the electric telescopic rods are connected to the bottoms of the four connecting blocks. In this preferred embodiment, the opening and closing component can be opened or closed by lowering the cover plate.

[0009] Preferably, the pressure component includes two second steel plates arranged on the inner wall of the model groove near the center position, and the inner walls of the two second steel plates are provided with multiple pressure sensors. In this preferred embodiment, the pressure component can measure the soil pressure.

[0010] Preferably, the impact component includes a plurality of impact air hammers symmetrically fixedly connected to the outer wall of the model groove with the center of the model groove as the axis. In this preferred embodiment, the impact component can imitate the impact force of crustal movement reduced several times and measure the soil pressure data affecting the intermediate principal stress.

[0011] Preferably, the fixing component includes four flanges symmetrically fixedly connected to the side walls of the model groove with the center of the model groove as the axis, and the four flange bosses are connected to a flange connecting plate preset on the ground. In this preferred embodiment, the fixing component can fix the model groove on the ground to prevent the model groove from shaking when measuring data, resulting in deviation in data measurement.

[0012] Preferably, the water inlet component includes a solenoid valve disposed on the top of the cover plate. In this preferred embodiment, the water inlet component can simulate rainwater to wet the land and then measure soil pressure data.

[0013] Preferably, the flow component includes a flow meter arranged at the water inlet end of the solenoid valve, and the water inlet end of the flow meter is connected to the water inlet pipe. In this preferred embodiment, the flow component can control the flow of water to prevent data deviation caused by excessive water.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] The opening and closing components can lower the cover to open or close, the pressure components can measure the soil pressure, the impact components can simulate the crustal movement to reduce the impact force several times, and measure the soil pressure data affecting the principal stress. The fixing components can fix the model slot on the ground to prevent the model slot from shaking when measuring data, resulting in data measurement deviation. The water inlet components can simulate rainwater to moisten the land, and then measure the soil pressure data. The flow component can control the flow of water to prevent data deviation caused by excessive water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axial view of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the water storage tank of the utility model;

[0019] Figure 4 It is an axial view of the utility model.

[0020] Description of the drawings: 10. Ground; 11. Model trough; 12. Opening and closing component; 121. Electric telescopic rod; 13. First steel plate; 14. Pressure component; 141. Second steel plate; 142. Pressure sensor; 15. Impact component; 151. Impact air hammer; 16. Fixing component; 161. Flange boss; 20. Rainwater simulation device; 21. Cover plate; 22. Water storage tank; 23. Water outlet; 24. Water inlet component; 241. Solenoid valve; 25. Flow component; 251. Flow meter; 26. Water inlet pipe; 27. Connecting block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0022] The following describes an embodiment of the utility model based on its overall structure.

[0023] Example

[0024] Please refer to the attached Figure 1, 2 As shown in the figure, in a preferred embodiment of the utility model, a soil pressure testing device for a steel sheet pile retaining wall considering the influence of the intermediate principal stress comprises a ground 10, a model groove 11 is arranged on the top of the ground 10, a side wall of the model groove 11 is provided with an opening and closing component 12, an inner side wall of the model groove 11 is symmetrically provided with two first steel plates 13 with the center of the model groove 11 as an axis, a pressure component 14 is arranged near the center of the inner wall of the model groove 11, an impact component 15 is arranged on the outer wall of the model groove 11, a fixing component 16 is arranged on the side wall of the model groove 11 close to the ground 10, a rainwater simulation device 20 is arranged above the model groove 11, and the opening and closing component 12 comprises a first steel plate 13 symmetrically arranged with the center of the model groove 11 as an axis There are four electric telescopic rods 121 on the side walls of the model groove 11, and the execution ends of the electric telescopic rods 121 are connected to the bottoms of the four connecting blocks 27. The pressure component 14 includes two second steel plates 141 arranged on the inner wall of the model groove 11 near the center position, and the inner walls of the two second steel plates 141 are provided with multiple pressure sensors 142. The impact component 15 includes multiple impact air hammers 151 fixedly connected to the outer wall of the model groove 11 symmetrically with the center of the model groove 11 as the axis. The fixing component 16 includes four flange bosses 161 fixedly connected to the side walls of the model groove 11 symmetrically with the center of the model groove 11 as the axis, and the four flange bosses 161 are flange-connected to the flange connection plate preset on the ground 10.

[0025] It should be noted that, in this embodiment, the staff first digs the experimental soil to be tested into the model groove 11, squeezes the experimental soil while filling the experimental soil until the density of the experimental soil is the same as that of the land, and then flanges the flange convex plate 161 at the bottom of the model groove 11 to the ground 10. After the fixing is completed, the soil pressure test is ready. At this time, the model groove 11 is filled with experimental soil. At this time, the experimental soil is restricted by the first steel plate 13, and the experimental soil squeezes the second steel plate 141. The pressure sensor 142 can measure the soil pressure data, and then the staff records and calculates. When it is necessary to calculate the pressure data under the influence of the intermediate principal stress, the electric telescopic rod 121 is first started to drive the connecting block 27, and the connecting block 27 drives the cover plate 21 to close, and then the impact air hammer 151 is started. The impact air hammer 151 imitates the impact force of the crust movement reduced by several times to impact the first steel plate 13, so that the first steel plate 13 impacts the experimental soil, and then the pressure data is obtained to calculate the soil pressure under the influence of the intermediate principal stress.

[0026] Please refer to the attached Figure 1 , 2As shown in Figures 3 and 4, in a preferred embodiment of the utility model, the rainwater imitation device 20 includes a cover plate 21 arranged above the model groove 11, the side wall of the cover plate 21 is embedded with a water storage tank 22, the side wall of the water storage tank 22 is embedded with multiple water outlets 23, the top of the cover plate 21 is provided with a water inlet component 24, the execution end of the water inlet component 24 is provided with a flow component 25, the execution end of the flow component 25 is provided with a water inlet pipe 26, the outer wall of the cover plate 21 is provided with four connecting blocks 27, the water inlet component 24 includes a solenoid valve 241 arranged on the top of the cover plate 21, the flow component 25 includes a flow meter 251 arranged at the water inlet end of the solenoid valve 241, and the water inlet end of the flow meter 251 is connected to the water inlet pipe 26.

[0027] It should be noted that, in this embodiment, when the land is wet, it will also affect the pressure data of the soil pressure. At this time, the water inlet pipe 26 is connected to the water source, and the water source passes through the flow meter 251. The flow meter 251 records the flow, and then the solenoid valve 241 is opened, and the water flows out from the outlet 23 through the water storage tank 22, simulating rain. At this time, the staff sets the precipitation. When the flow meter 251 reaches the set value, the solenoid valve 241 is closed. When the precipitation is reached, the pressure sensor 142 transmits the data, and the staff calculates the soil pressure at this time.

[0028] The working principle of the utility model is:

[0029] The staff first digs the test soil to be tested into the model groove 11, squeezes the test soil while filling it, until the density of the test soil is the same as that of the land, and then flanges the flange convex plate 161 at the bottom of the model groove 11 to the ground 10. After the fixation is completed, the soil pressure test is ready. At this time, the model groove 11 is filled with test soil. At this time, the test soil is restricted by the first steel plate 13, and the test soil squeezes the second steel plate 141. The pressure sensor 142 can measure the soil pressure data, and then the staff records and calculates. When it is necessary to calculate the pressure data under the influence of the intermediate principal stress, the electric telescopic rod 121 is first started to drive the connecting block 27, and the connecting block 27 drives the cover plate 21 to close, and then Then start the impact hammer 151, which simulates the impact force of the crust movement reduced several times to impact the first steel plate 13, so that the first steel plate 13 impacts the test soil, and then obtains the pressure data, and calculates the soil pressure under the influence of the principal stress. When the land is wet, it will also affect the pressure data of the soil pressure. At this time, the water inlet pipe 26 is connected to the water source, and the water source passes through the flow meter 251. The flow meter 251 records the flow, and then the solenoid valve 241 is opened, and the water flows out from the water outlet 23 through the water storage tank 22 to simulate rain. At this time, the staff sets the precipitation. When the flow meter 251 reaches the set value, the solenoid valve 241 is closed. When the precipitation is reached, the pressure sensor 142 transmits the data, and the staff calculates the soil pressure at this time.

[0030] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A soil pressure testing device for a steel sheet pile retaining wall taking into account the influence of intermediate principal stress, comprising a ground surface (10), characterized in that: A model groove (11) is provided on the top of the ground (10), an opening and closing component (12) is provided on the side wall of the model groove (11), two first steel plates (13) are symmetrically provided on the inner side wall of the model groove (11) with the center of the model groove (11) as an axis, a pressure component (14) is provided on the inner wall of the model groove (11) near the center, an impact component (15) is provided on the outer wall of the model groove (11), a fixing component (16) is provided on the side wall of the model groove (11) close to the ground (10), and a rainwater simulation device (20) is provided above the model groove (11); The rainwater simulation device (20) comprises a cover plate (21) arranged above the model groove (11); a water storage tank (22) is embedded in the side wall of the cover plate (21); a plurality of water outlets (23) are embedded in the side wall of the water storage tank (22); a water inlet component (24) is provided at the top of the cover plate (21); a flow component (25) is provided at the execution end of the water inlet component (24); a water inlet pipe (26) is provided at the execution end of the flow component (25); and four connecting blocks (27) are provided on the outer wall of the cover plate (21).

2. A steel sheet pile retaining wall soil pressure testing device considering the influence of intermediate principal stress according to claim 1, characterized in that: The opening and closing component (12) comprises four electric telescopic rods (121) symmetrically arranged on the side walls of the model groove (11) with the center of the model groove (11) as an axis, and the execution ends of the electric telescopic rods (121) are connected to the bottoms of the four connection blocks (27).

3. A steel sheet pile retaining wall soil pressure testing device considering the influence of intermediate principal stress according to claim 1, characterized in that: The pressure component (14) comprises two second steel plates (141) arranged on the inner wall of the mold groove (11) near the center position, and the inner walls of the two second steel plates (141) are provided with a plurality of pressure sensors (142).

4. A steel sheet pile retaining wall soil pressure testing device considering the influence of intermediate principal stress according to claim 1, characterized in that: The impact component (15) comprises a plurality of impact air hammers (151) which are symmetrically fixedly connected to the outer wall of the model groove (11) with the center of the model groove (11) as an axis.

5. The soil pressure testing device for steel sheet pile retaining wall considering the influence of intermediate principal stress according to claim 1 is characterized in that: The fixing component (16) comprises four flange convex plates (161) fixedly connected to the side walls of the model groove (11) symmetrically with the center of the model groove (11) as an axis, and the four flange convex plates (161) are flange-connected to a flange connection plate preset on the ground (10).

6. The soil pressure testing device for steel sheet pile retaining wall considering the influence of intermediate principal stress according to claim 1 is characterized in that: The water inlet component (24) comprises a solenoid valve (241) arranged on the top of the cover plate (21).

7. A steel sheet pile retaining wall soil pressure testing device considering the influence of intermediate principal stress according to claim 6, characterized in that: The flow component (25) comprises a flow meter (251) arranged at the water inlet end of the solenoid valve (241), and the water inlet end of the flow meter (251) is connected to the water inlet pipe (26).

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