A test model device for a defective lining

Abstract

The utility model relates to a kind of defective lining test model device, it includes: pedestal, several slot rings are set on it, the slot ring includes the several slot of annular interval arrangement;Simulation layer includes lining model being set on the pedestal, annular sleeve being set in the lining model outside and several jack assemblies, the lining model is filled with stratum medium between the annular sleeve and is set, the slot ring and the contour of lining model correspond, the jack assembly can be inserted and set in the slot for applying force to the annular sleeve, in turn by the stratum medium conduction to the lining model on;Pressing plate mechanism, including the pressing plate of liftable, the pressing plate is used to compress the lining model and limit position.So that this lining test model device has both load structure model stress clear characteristics, and stratum model can simulate the advantage of surrounding rock structure interaction.

Description

Technical Field

[0001] This utility model relates to the field of tunnel model testing technology, specifically to a test model device for defective lining. Background Technology

[0002] Currently, loading devices for tunnel model tests are mainly divided into two categories: stratum models and load structure models. Stratum models can reflect the interaction between the surrounding rock and the structure, but the stress state is relatively complex, difficult to control precisely, and the test is difficult. Load structure models have a clear stress concept and are relatively simple, but they cannot consider the interaction between the surrounding rock and the structure.

[0003] Therefore, it is necessary to propose a lining test model device that has a clear load structure model and the ability of the stratum model to simulate the interaction between the surrounding rock structure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a test model device for defective lining.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: A test model device for defective lining, comprising: A base having a plurality of slot rings thereon, the slot rings comprising a plurality of slots arranged at annular intervals; The simulation layer includes a lining model set on the base, an annular sleeve fitted on the outside of the lining model, and several servo hydraulic loading devices. A surrounding rock model is filled between the lining model and the annular sleeve. The slot ring corresponds to the contour of the lining model. The servo hydraulic loading device is pluggable and insertable in the slot to apply force to the annular sleeve, which is then transmitted to the lining model through the surrounding rock model. A pressure plate mechanism, comprising a liftable pressure plate for pressing and limiting the lining model.

[0006] In one embodiment of this utility model, the servo hydraulic loading device includes an insert block, a vertical plate disposed on the top of the insert block, and a jack fixed on one side of the vertical plate. The output end of the jack presses against the annular sleeve, causing the annular sleeve to deform and locally change the force applied by the surrounding rock model to the lining model.

[0007] In one embodiment of this utility model, the output end of the jack abuts against the annular sleeve in the retracted state to position the annular ring.

[0008] In one embodiment of this utility model, both the insert block and the slot have rectangular cross-sections. The insert block has a recessed gripping portion in the middle, and after the insert block is inserted into the slot, the gripping portion protrudes from the upper surface of the base.

[0009] In one embodiment of this utility model, a vibration excitation assembly is provided on the base inside the lining model. The vibration excitation assembly includes a base body, two base body connecting seats symmetrically arranged on both sides of the base body, two contact rods symmetrically arranged on one side of the base body, and two sets of vibration motors symmetrically arranged on the base body. The base body is fixed on the base body through the base body connecting seats, and the contact rods abut against the inner wall of the lining model. The vibration motor operates to make the contact rod vibrate, thereby simulating the vibration scenario of the railway track inside the tunnel lining when the train is in operation.

[0010] In one embodiment of this utility model, a through-hole is provided on the base inside the lining model for the wire harness to pass through.

[0011] In one embodiment of this utility model, the base is provided with a plurality of filling blocks, which are used to seal the slots where the servo hydraulic loading device is not installed. The top of the filling block is provided with a recessed handle for picking up and putting down the filling block.

[0012] As one embodiment of this utility model, the surrounding rock model is provided with lining defects.

[0013] As one embodiment of the present invention, the pressure plate mechanism further includes an upper plate disposed above the simulation layer via a column assembly and a pressure plate drive electric cylinder disposed on the upper plate. The output end of the pressure plate drive electric cylinder can be vertically raised and lowered and passes through the upper plate. The pressure plate is disposed on the output end of the pressure plate drive electric cylinder.

[0014] In one embodiment of this utility model, the annular sleeve is made of copper and is circular in shape.

[0015] The beneficial effects of adopting the above technical solution are as follows: In this invention, a surrounding rock model is filled between the lining model and the annular sleeve. By changing the material and properties of the surrounding rock model, the working conditions of tunnel lining in a real-world scenario can be simulated. Simultaneously, several servo hydraulic loading devices abutting against the outside of the annular sleeve can apply a jacking force locally to the annular sleeve, making the load structure model of the lining model clearly visible. Thus, the experimental model device of this application has the functions of clearly showing the stress on the lining structure and simulating the interaction between the surrounding rock structure, resulting in more accurate experimental data.

[0016] This utility model features a multi-ring slot ring, which allows for testing on lining models of different sizes and models, thus increasing the adaptability of this application. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment.

[0018] Figure 2 This is a schematic diagram of the main structure of an embodiment.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure above the base and simulation layer in the embodiment.

[0020] Figure 4 This is a top view of the base and simulation layer of the embodiment.

[0021] Figure 5 This is a schematic diagram of the structure after the filling block and servo hydraulic loading device of the embodiment are inserted into the slot.

[0022] Figure 6 This is a schematic diagram of the structure of the filling block and servo hydraulic loading device after they are removed from the slot in the embodiment.

[0023] Figure 7 This is a schematic diagram of the servo hydraulic loading device in the embodiment.

[0024] Figure 8 This is a top view of the simulation layer after the surrounding rock model has been filled in, as shown in the embodiment.

[0025] Wherein: 100 Base; 101 Cable guide hole; 102 First slot; 103 Second slot; 200 simulation layers; 300 Pressure plate mechanism; 301 Upper plate; 302 Pressure plate drive electric cylinder; 303 Pressure plate; 1. Lining model; 2. Annular sleeve; 3 Servo hydraulic loading device; 31 Insert block; 32 Vertical plate; 33 Grip part; 34 Jack; 35 Top plate; 36 Mounting hole; 37 Connector; 4. Filler block; 41. Hand clip; 5. Vibration excitation assembly; 51. Base; 52. Base connecting seat; 53. Contact rod; 54. Vibration motor; 6. Filling gaps; 7 Surrounding rock model; 8 Loose area; 9 Cavity area. Detailed Implementation

[0026] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0027] like Figures 1 to 4 The device shown is a test model device for defective lining, which includes: a base 100, a simulation layer 200 and a pressure plate mechanism 300.

[0028] The base 100 is provided with a plurality of slot rings, each of which includes a plurality of slots arranged in a ring at intervals.

[0029] The simulation layer 200 includes a lining model 1 disposed on the base 100, an annular sleeve 2 sleeved on the outside of the lining model 1, and several servo hydraulic loading devices 3. A filling gap 6 is formed between the lining model 1 and the annular sleeve 2, which is filled with a surrounding rock model 7. The slot ring corresponds to the contour of the lining model 1. The servo hydraulic loading device 3 is pluggable and pluggable in the slot to apply force to the annular sleeve 2, which is then transmitted to the lining model 1 through the surrounding rock model 7.

[0030] The pressure plate mechanism 300 includes a liftable pressure plate 303, which is used to press and limit the lining model 1.

[0031] See Figure 8 In this embodiment, the surrounding rock model 7 is provided with a non-dense area 8 and / or a void area 9 to simulate the real stratum defects of the surrounding rock around the tunnel lining.

[0032] See Figure 3 , Figure 4 and Figure 8 In this embodiment, the base 100 is provided with a through-hole 101. The wires of the sensor used for test simulation are connected to the external equipment through the through-hole 101, and the wiring harness of the excitation component 5 is also connected to the external equipment through the through-hole 101.

[0033] See Figures 3 to 6 The slot in this embodiment includes a first slot ring and a second slot ring arranged concentrically, wherein the first slot ring includes a plurality of first slots 102 and the second slot ring includes a plurality of second slots 103.

[0034] See Figures 5 to 7 The servo hydraulic loading device 3 includes an insert block 31, a vertical plate 32 disposed on the top of the insert block 31, and a jack 34 fixed to one side of the vertical plate 32. The top plate 35 at the output end of the jack 34 presses against the annular sleeve 2, causing the annular sleeve 2 to deform and locally change the force exerted by the surrounding rock model 7 on the lining model 1. The annular sleeve 2 is made of copper or rubber, and its overall shape is annular, with its height adapted to the height of the surrounding rock model 7.

[0035] See Figure 3 and Figure 8The output end of the jack 34 abuts against the annular sleeve 2 in the retracted state to position the annular sleeve 2. The cross-section of the insert block 31 and the slot is rectangular. The insert block 31 has a recessed gripping part 33 in the middle. After the insert block 31 is inserted into the slot, the gripping part 33 protrudes from the upper end surface of the base 100 so that the operator can pull out the insert block 31.

[0036] See Figure 3 , Figure 4 and Figure 8 A vibration excitation assembly 5 is provided on the base 100 inside the lining model 1. The vibration excitation assembly 5 includes a base 51, two base connecting seats 52 symmetrically arranged on both sides of the base 51, two contact rods 53 symmetrically arranged on one side of the base 51, and two sets of vibration motors 54 symmetrically arranged on the base 51. The base 51 is fixed on the base 100 through the base connecting seats 52. The contact rods 53 abut against the inner wall of the lining model 1. The vibration motors 54 work to make the contact rods 53 vibrate, thereby simulating the vibration scene of the railway track inside the tunnel lining when the train is in operation.

[0037] See Figure 5 and Figure 6 The base 100 is provided with a plurality of filling blocks 4, which are used to seal the slots where the servo hydraulic loading device 3 is not installed. The top of the filling block 4 is provided with a recessed handle 41 for picking up and putting down the filling block 4.

[0038] In this embodiment, the pressure plate mechanism 300 further includes an upper plate 301 disposed above the simulation layer 200 via a column assembly and a pressure plate drive electric cylinder 302 disposed on the upper plate 301. The output end of the pressure plate drive electric cylinder 302 can be vertically raised and lowered and passes through the upper plate 301. The pressure plate 303 is disposed on the output end of the pressure plate drive electric cylinder 302.

[0039] The specific steps are as follows: Based on the principle of similar model test, a lining model 1 and surrounding rock simulation material of the same scale as the actual lining are prepared. The lining model 1 is placed on the base 100 and concentrically set with the annular sleeve 2. The surrounding rock simulation material is filled into the filling gap 6 formed between the lining model 1 and the annular sleeve 2 to form the surrounding rock model 7.

[0040] When preparing the lining model and the surrounding rock model, various defects such as cracks, back voids, insufficient strength, and insufficient thickness are simulated simultaneously.

[0041] The servo hydraulic loading device 3 is activated to apply load to the surrounding rock model 7 through the annular sleeve 2 to simulate the external confining pressure. The excitation component 5 is activated to cyclically load and simulate the train load.

[0042] Record the development of the disease at different times.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test model device for defective lining, characterized in that, It includes: A base (100) is provided with a plurality of slot rings, the slot rings including a plurality of slots arranged in a ring at intervals; The simulation layer (200) includes a lining model (1) disposed on the base (100), an annular sleeve (2) sleeved on the outside of the lining model (1), and several servo hydraulic loading devices (3). A surrounding rock model (7) is filled between the lining model (1) and the annular sleeve (2). The slot ring corresponds to the outline of the lining model (1). The servo hydraulic loading device (3) can be inserted and removed into the slot to apply force to the annular sleeve (2), which is then transmitted to the lining model (1) through the surrounding rock model (7). The pressure plate mechanism (300) includes a liftable pressure plate (303) for pressing and limiting the lining model (1).

2. The experimental model device for defective lining according to claim 1, characterized in that, The servo hydraulic loading device (3) includes a plug (31), a vertical plate (32) set on the top of the plug (31), and a jack (34) fixed on one side of the vertical plate (32). The output end of the jack (34) presses against the annular sleeve (2) to deform the annular sleeve (2) so as to locally change the force exerted by the surrounding rock model (7) on the lining model (1).

3. The experimental model device for defective lining according to claim 2, characterized in that, The output end of the jack (34) abuts against the annular sleeve (2) in the retracted state to position the annular sleeve (2).

4. The experimental model device for defective lining according to claim 2, characterized in that, Both the insert (31) and the slot have rectangular cross-sections. The insert (31) has a recessed grip (33) in the middle. After the insert (31) is inserted into the slot, the grip (33) protrudes from the upper surface of the base (100).

5. The experimental model device for defective lining according to claim 1, characterized in that, A vibration assembly (5) is provided on the base (100) inside the lining model (1). The vibration assembly (5) includes a base (51), two base connecting seats (52) symmetrically arranged on both sides of the base (51), two contact rods (53) symmetrically arranged on one side of the base (51), and two sets of vibration motors (54) symmetrically arranged on the base (51). The base (51) is fixed on the base (100) through the base connecting seats (52), and the contact rods (53) abut against the inner wall of the lining model (1). The vibration motor (54) operates to make the contact rod (53) vibrate, thereby simulating the vibration scenario of the railway track inside the tunnel lining when the train is in operation.

6. The experimental model device for defective lining according to claim 5, characterized in that, The base (100) has a through hole (101) inside the lining model (1) for the wire harness to pass through.

7. The experimental model device for defective lining according to claim 1, characterized in that, The base (100) is provided with a plurality of filling blocks (4), which are used to seal the slots where the servo hydraulic loading device (3) is not installed. The top of the filling block (4) is provided with a recessed handle (41) for taking and placing the filling block (4).

8. The experimental model device for defective lining according to claim 1, characterized in that, The surrounding rock model (7) has lining defects.

9. The experimental model device for defective lining according to claim 1, characterized in that, The pressure plate mechanism (300) also includes an upper plate (301) disposed above the simulation layer (200) via a column assembly and a pressure plate drive electric cylinder (302) disposed on the upper plate (301). The output end of the pressure plate drive electric cylinder (302) can be vertically raised and lowered and passes through the upper plate (301). The pressure plate (303) is disposed on the output end of the pressure plate drive electric cylinder (302).

10. The experimental model device for defective lining according to claim 2, characterized in that, The annular sleeve (2) is made of copper and is annular in shape.

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