CN213580956U

CN213580956U - Shield excavation and soil body settlement detection simulation test platform

Info

Publication number: CN213580956U
Application number: CN202022626932.0U
Authority: CN
Inventors: 王俊
Original assignee: Wuhan An Durable Civil Engineering Technology Co ltd
Current assignee: Wuhan An Durable Civil Engineering Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-06-29
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a shield excavation and soil body settlement detection simulation test platform, belonging to the technical field of shield construction, the technical scheme is characterized by comprising a workbench, wherein the top of the workbench is fixedly connected with a test box, the inner wall of the test box is fixedly connected with a transverse plate, a vertical plate is fixedly connected between the transverse plate and the test box, two mounting grooves are respectively arranged on two sides of the test box, the inner wall of the mounting groove is clamped with a clamping plate, the test chamber is filled with a test base layer, the test chamber can be sealed by arranging a sealing cover, so that the test chamber is in a closed environment during the simulation test, the internal humidity, the temperature and the wind speed are controlled more accurately, the accuracy of the test result is improved, the transverse plate and the vertical plate are arranged, the test box can be divided into four equal-size subareas, and then different numbers of shield excavation are arranged in large test base layers such as tests and the like to influence the soil body settlement.

Description

Shield excavation and soil body settlement detection simulation test platform

Technical Field

The utility model relates to a shield constructs construction technical field, more specifically says, relates to a shield constructs excavation and soil body subsides detection analogue test platform.

Background

One of the important measures for controlling sedimentation when a shield method is adopted in subway tunnel construction is grouting filling, shield tail gap filling is adopted in almost most projects at present, excavation gap filling is rarely considered, stratum sedimentation effect caused by excavation gaps is not neglected in projects with high sedimentation requirements, high-precision and automatic detection of stratum displacement caused by shield construction is an important guarantee for micro disturbance and micro sedimentation control of a shield crossing major risk source test, stratum deep level displacement detection is carried out more and more in actual projects at present, a magnetic ring type displacement meter, a multi-point displacement meter and a single-point displacement meter are adopted for deep level displacement detection at present, and no matter which detection equipment is adopted, drilling, embedding equipment and back-filling sand in a stratum are required for detection.

The shield excavation and soil body settlement detection need to be operated by using a corresponding simulation test platform, factors such as temperature, wind speed and humidity also influence a detection result, the existing simulation test platform has the problems that the sealing performance is poor, the temperature, the wind speed and the humidity of a test main body cannot be controlled, and the detection result is not accurate enough, so that technical personnel in the field provide the shield excavation and soil body settlement detection simulation test platform to solve the problems provided in the background technology.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a shield constructs excavation and soil body settlement detection analogue test platform possesses that analogue test platform exists that sealing performance is good, can control the temperature, wind speed and the humidity of experimental main part, and the advantage that testing result is more accurate has solved analogue test platform and has had sealing performance poor, can't control the temperature, wind speed and the humidity of experimental main part, and the testing result is accurate problem inadequately.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A shield excavation and soil body settlement detection simulation test platform comprises a workbench, wherein a test box is fixedly connected to the top of the workbench, a transverse plate is fixedly connected to the inner wall of the test box, a vertical plate is fixedly connected between the transverse plate and the test box, two mounting grooves are formed in each of two sides of the test box, clamping plates are clamped on the inner walls of the mounting grooves, a test base layer is filled in the test box, single-point displacement meters which are uniformly distributed are embedded in the test base layer, a controller is arranged at the top of the workbench, a frame is fixedly connected to the top of the workbench, an electric push rod is fixedly connected to the top of the frame, penetrates through the frame and is fixedly connected with a sealing cover, a fan is arranged at the top of the sealing cover, an adjusting device is communicated with the left side of the fan, and the bottom of the adjusting device penetrates through the sealing cover and extends to the inner wall of, the inner top wall of the sealing cover is provided with heating pipes which are uniformly distributed, the left side of the inner wall of the sealing cover is provided with a temperature sensor, the output end of the temperature sensor is electrically connected with the input end of the controller, and the input ends of the electric push rod, the fan and the heating pipes are electrically connected with the output end of the controller.

Preferably, the inner wall of the sealing cover is fixedly connected with a back-shaped frame, and a sealing gasket is arranged at the bottom of the back-shaped frame.

Preferably, the inside of the test box is provided with clamping grooves which are uniformly distributed and communicated with the mounting groove, the surface of the clamping plate is fixedly connected with a clamping block, the clamping block is U-shaped, and the clamping block is located on the inner wall of the clamping groove.

Preferably, the inside of the test box is provided with movable grooves which are uniformly distributed and communicated with the clamping grooves, the inner wall of each movable groove is provided with an air bag, one side of each air bag is communicated with an inflation tube, and the inflation tube penetrates through the test box and extends to the outside of the test box.

Preferably, adjusting device includes the adjusting frame, the seat is adjusted to the inner wall right side fixedly connected with of adjusting frame, the inner wall left side fixedly connected with fixed block of adjusting frame, the left side threaded connection of adjusting frame has the lead screw, the lead screw runs through adjusting frame and fixedly connected with regulating block, the regulating block runs through the fixed block and extends to the outside of fixed block.

Preferably, the left side of the inner wall of the adjusting seat is provided with a protective pad, and the protective pad is a rubber material component.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) according to the scheme, the sealing cover is arranged, the test box can be sealed, the test box is in a closed environment during a simulation test, the internal humidity, the temperature and the wind speed are controlled more accurately, the accuracy of a test result is improved, the test box can be divided into four equal-size partitions by arranging the transverse plate and the vertical plate, the influence of shield excavation with different numbers on soil body settlement is further established in a large test base layer such as a test, the wind speed of a fan entering the sealing cover can be adjusted by arranging the adjusting device, the settlement test can be performed on the shield excavation under the influence of different wind forces, and the test data are more accurate;

(2) by arranging the back-shaped frame and the sealing gasket, the sealing performance between the sealing cover and the test box can be effectively enhanced, the air leakage between the sealing cover and the test box is avoided, the accuracy of test data is further improved, the clamping plate is more convenient to take by arranging the clamping block and the clamping groove, and shield excavation of a test base layer is facilitated in the early stage;

(3) through setting up the gasbag, but the complete sealing of test joint board and mounting groove, sealing performance when the guarantee is experimental, and the design of gas tube, it is more convenient when the operation is aerifyd and is deflated, through setting up the protection pad, can guarantee adjusting device's complete sealing when adjusting device does not use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the test chamber of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

fig. 4 is an enlarged view of the point B in fig. 2 according to the present invention.

The reference numbers in the figures illustrate:

1. a work table; 2. a test chamber; 201. a card slot; 202. a movable groove; 203. an air bag; 204. an inflation tube; 3. a clamping and connecting plate; 301. a clamping block; 4. a transverse plate; 5. a vertical plate; 6. testing the base layer; 7. a single point displacement meter; 8. a controller; 9. a frame; 10. an electric push rod; 11. a sealing cover; 1101. a back-shaped frame; 1102. a gasket; 12. a fan; 13. an adjustment device; 1301. an adjusting frame; 1302. an adjusting seat; 1303. a protective pad; 1304. a fixed block; 1305. a screw rod; 1306. an adjusting block; 14. a temperature sensor; 15. heating the tube.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a shield excavation and soil body settlement detection simulation test platform comprises a workbench 1, a test box 2 is fixedly connected to the top of the workbench 1, a transverse plate 4 is fixedly connected to the inner wall of the test box 2, a vertical plate 5 is fixedly connected between the transverse plate 4 and the test box 2, two mounting grooves are respectively formed in two sides of the test box 2, a clamping plate 3 is clamped to the inner wall of each mounting groove, a test base layer 6 is filled in the test box 2, single-point displacement meters 7 which are uniformly distributed are embedded and mounted in the test base layer 6, a controller 8 is arranged at the top of the workbench 1, a frame 9 is fixedly connected to the top of the workbench 1, an electric push rod 10 is fixedly connected to the top of the frame 9, the electric push rod 10 penetrates through the frame 9 and is fixedly connected with a sealing cover 11, a fan 12 is arranged at the top of the sealing cover 11, and, the bottom of adjusting device 13 runs through sealed lid 11 and extends to the inner wall of sealed lid 11, and the interior roof of sealed lid 11 is provided with evenly distributed's heating pipe 15, and the inner wall left side of sealed lid 11 is provided with temperature sensor 14, and temperature sensor 14's output and controller 8's input electric connection, electric putter 10, fan 12 and the input of heating pipe 15 and controller 8's output electric connection.

Further, the inner wall fixedly connected with of sealed lid 11 returns type frame 1101, and the bottom of returning type frame 1101 is provided with sealed the pad 1102, through setting up back type frame 1101 and sealed pad 1102, can effectively strengthen the sealing performance between sealed lid 11 and proof box 2, avoids sealed lid 11 and proof box 2 the condition of gas leakage to appear, further improves test data's accuracy.

Further, draw-in groove 201 that evenly distributed and be linked together with the mounting groove is seted up to proof box 2's inside, and the fixed surface of joint plate 3 is connected with fixture block 301, and fixture block 301's shape is the U-shaped, and fixture block 301 is located the inner wall of draw-in groove 201, through setting up fixture block 301 and draw-in groove 201 for it is more convenient that joint plate 3 takes, is convenient for carry out the shield excavation to experimental basic unit 6 in earlier stage.

Further, evenly distributed and the activity groove 202 that is linked together with draw-in groove 201 are seted up to proof box 2's inside, the inner wall of activity groove 202 is provided with gasbag 203, one side intercommunication of gasbag 203 has gas tube 204, gas tube 204 runs through proof box 2 and extends to proof box 2's outside, through setting up gasbag 203, can test the complete sealing of joint board 3 and mounting groove, sealing performance when the guarantee is experimental, and the design of gas tube 204, it is more convenient when aerifing and deflating in the operation.

Further, adjusting device 13 includes the alignment jig 1301, the inner wall right side fixedly connected with of alignment jig 1301 adjusts seat 1302, the inner wall left side fixedly connected with fixed block 1304 of alignment jig 1301, the left side threaded connection of alignment jig 1301 has lead screw 1305, lead screw 1305 runs through alignment jig 1301 and fixedly connected with regulating block 1306, regulating block 1306 runs through fixed block 1304 and extends to the outside of fixed block 1304, through setting up adjusting device 13, can adjust the wind speed that fan 12 got into sealed lid 11, can carry out settlement test to the shield excavation under the influence of different wind-forces, make experimental data more accurate.

Further, a protection pad 1303 is arranged on the left side of the inner wall of the adjusting seat 1302, the protection pad 1303 is a rubber material member, and through the arrangement of the protection pad 1303, complete sealing of the adjusting device 13 can be guaranteed when the adjusting device 13 is not used.

The working principle is as follows: taking the clamping plate 3 out of the inside of the mounting groove, performing shield excavation according to test requirements, using different shield excavation methods or excavating different quantities in four divided regions of the transverse plate 4 and the vertical plate 5, dividing the test box 2 into four equal-size subareas by arranging the transverse plate 4 and the vertical plate 5, further establishing the influence of different quantities of shield excavation on soil body settlement in the equal-size test base layer 6, embedding the single-point displacement meter 7 into the test base layer 6, reinforcing a channel needing the single-point displacement meter 7 and shield excavation by mortar after construction, placing the clamping plate 3 into the inner wall of the mounting groove by using the clamping grooves 201 and the clamping blocks 301, enabling the clamping plate 3 to be more conveniently taken by arranging the clamping blocks 301 and the clamping grooves 201, facilitating shield excavation of the test base layer 6 in the early stage, and inflating the air bag 203 by using the inflation tube 204, by arranging the air bag 203, the complete sealing of the clamping plate 3 and the mounting groove can be tested, the sealing performance during the test can be ensured, and the design of the inflation tube 204 is more convenient during inflation and deflation in operation, the air bag 203 expands in the movable groove 202 and contacts with the clamping plate 3, the electric push rod 10 is started, the electric push rod 10 drives the sealing cover 11 to move downwards, the test box 2 can be sealed by arranging the sealing cover 11, so that the test box 2 is in a closed environment during simulation test, the internal humidity, the temperature and the wind speed can be controlled more accurately, the accuracy of the test result can be improved, the sealing gasket 1102 at the bottom of the square frame 1101 is contacted with the top of the test box 2, the sealing performance between the sealing cover 11 and the test box 2 can be effectively enhanced by arranging the square frame 1101 and the sealing gasket 1102, the condition that the sealing cover 11 and the test box 2 leak air can be avoided, and the accuracy of the test data can be further improved, temperature sensor 14 can carry out real-time detection to the inside temperature of proof box 2, can control according to experimental required temperature, accessible heating pipe 15 heaies up when the temperature is not enough, fan 12 and adjusting device 13 regulate and control the inside wind speed of proof box 2, rotatory lead screw 1305, lead screw 1305 can drive regulating block 1306 and take place the displacement, get into when regulating block 1306 adjusts seat 1302 and contacts with protection pad 1303, close adjusting device 13 completely promptly, through setting up adjusting device 13, can adjust the wind speed that fan 12 got into sealed lid 11, can carry out settlement test to the shield excavation under the influence of different wind-force, make experimental data more accurate, observe the numerical value change of single-point displacement meter 7 in a period.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a shield constructs excavation and soil body settlement detection analogue test platform, includes workstation (1), its characterized in that: the top of the working table (1) is fixedly connected with a test box (2), the inner wall of the test box (2) is fixedly connected with a transverse plate (4), a vertical plate (5) is fixedly connected between the transverse plate (4) and the test box (2), two mounting grooves are formed in two sides of the test box (2), a clamping plate (3) is clamped in the inner wall of each mounting groove, a test base layer (6) is filled in the test box (2), single-point displacement meters (7) which are uniformly distributed are embedded in the test base layer (6), a controller (8) is arranged at the top of the working table (1), a frame (9) is fixedly connected to the top of the working table (1), an electric push rod (10) is fixedly connected to the top of the frame (9), and the electric push rod (10) penetrates through the frame (9) and is fixedly connected with a sealing cover (11), the top of sealed lid (11) is provided with fan (12), the left side intercommunication of fan (12) has adjusting device (13), the inner wall that sealed lid (11) and extended to sealed lid (11) is run through to the bottom of adjusting device (13), the interior roof of sealed lid (11) is provided with evenly distributed's heating pipe (15), the inner wall left side of sealed lid (11) is provided with temperature sensor (14), the input electric connection of the output of temperature sensor (14) and controller (8), the input of electric putter (10), fan (12) and heating pipe (15) and the output electric connection of controller (8).

2. The shield excavation and soil body settlement detection simulation test platform of claim 1, characterized in that: the inner wall of the sealing cover (11) is fixedly connected with a shape returning frame (1101), and a sealing gasket (1102) is arranged at the bottom of the shape returning frame (1101).

3. The shield excavation and soil body settlement detection simulation test platform of claim 1, characterized in that: the test box is characterized in that clamping grooves (201) which are uniformly distributed and communicated with the mounting groove are formed in the test box (2), a clamping block (301) is fixedly connected to the surface of the clamping plate (3), the clamping block (301) is U-shaped, and the clamping block (301) is located on the inner wall of the clamping groove (201).

4. The shield excavation and soil body settlement detection simulation test platform of claim 3, wherein: the test box is characterized in that movable grooves (202) which are uniformly distributed and communicated with the clamping grooves (201) are formed in the test box (2), air bags (203) are arranged on the inner walls of the movable grooves (202), one sides of the air bags (203) are communicated with air inflation tubes (204), and the air inflation tubes (204) penetrate through the test box (2) and extend to the outside of the test box (2).

5. The shield excavation and soil body settlement detection simulation test platform of claim 1, characterized in that: the adjusting device (13) comprises an adjusting frame (1301), an adjusting seat (1302) is fixedly connected to the right side of the inner wall of the adjusting frame (1301), a fixing block (1304) is fixedly connected to the left side of the inner wall of the adjusting frame (1301), a screw rod (1305) is connected to the left side of the adjusting frame (1301) in a threaded mode, the screw rod (1305) penetrates through the adjusting frame (1301) and is fixedly connected with an adjusting block (1306), and the adjusting block (1306) penetrates through the fixing block (1304) and extends to the outside of the fixing block (1304).

6. The shield excavation and soil body settlement detection simulation test platform of claim 5, wherein: the left side of the inner wall of the adjusting seat (1302) is provided with a protective pad (1303), and the protective pad (1303) is a rubber material component.