Testing device for testing bottom void range of pipe gallery structure
By setting the driving motor on the bottom plate of the model box to generate vibration, causing the soil to stagger, and combining the electrical connection between the displacement meter, strain flower and soil pressure box and the data collection box, the air discharge range and strain conditions at the bottom of the pipeline structure are clarified, and the problem of full-section reinforcement in the design in the existing technology is solved, and the safety and stability of construction and operation are improved.
Patent Information
- Application Number
- CN202421625940.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing technology lacks theoretical calculation methods for the range of the bottom empty zone of the pipeline structure, resulting in the need of full-section reinforcement in the design, increasing project costs and construction periods, and the safety and stability in construction and operation are difficult to ensure.
A test device for testing the air discharge range at the bottom of the pipe corridor structure is designed. By setting a driving motor on the bottom plate of the model box, vibration is generated to cause the soil to stagger, and combined with the electrical connection between the displacement meter, strain flower and soil pressure box and the data collection box, the air discharge range and strain in each direction are clarified.
The scope and strain conditions of the bottom of the pipeline structure are effectively clarified, targeted disaster prevention and control measures are provided, project costs and construction periods are reduced, and construction and operation safety and stability are improved.
Smart Images
Figure CN222850478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of influence of ground fissures on pipe gallery structures in loess regions, in particular to a test device for testing the hollowing range of the bottom of a pipe gallery structure. Background Art
[0002] When the tunnel structure crosses the ground fissures, there is no theoretical calculation method specifically for the scope of the bottom void area of the tunnel structure. The design often adopts full-section reinforcement, which increases the project cost and prolongs the construction period. It is urgent to optimize the design. In addition, the comprehensive tunnel is different from other underground projects. It is an important urban lifeline project. Its safety and stability during construction and operation are particularly important. When the ground fissures are displaced, the construction and safe operation of the tunnel structure have the problem that the scope of the bottom void area is unclear and the disaster prevention and control measures are not targeted. It is necessary to clarify the scope of the void area and formulate targeted prevention and control measures. Therefore, there is an urgent need for a test device to test the bottom void range of the tunnel structure. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a test device for testing the hollowing range of the bottom of the pipe gallery structure. A driving motor is arranged at the bottom of the bottom plate of the model box, and the driving motor vibrates the bottom plate of the model box to cause the soil to shift. The displacement meter, the strain rosette and the soil pressure box are electrically connected to the data acquisition box, and then the data acquisition box is electrically connected to the PC, so that the hollowing range and the strains in all directions can be clearly determined.
[0004] To achieve the above-mentioned purpose, the utility model provides a test device for testing the bottom hollowing range of a pipe gallery structure, comprising a box frame, a model box is arranged on the top of the box frame, a drive motor is arranged on the inner bottom of the box frame, and the output end of the drive motor is arranged on one side of the bottom plate of the model box. The drive motor vibrates the bottom plate of the model box to cause the soil to shift.
[0005] Preferably, the bottom plate of the model box includes an A plate, a B plate, a C plate and a D plate.
[0006] Preferably, the pipeline corridor runs through the model box horizontally, and soil is arranged around the pipeline corridor. Strain rosettes and soil pressure boxes are arranged on the pipeline corridor. The strain rosettes and soil pressure boxes are electrically connected to a data acquisition box, and the data acquisition box is electrically connected to a PC.
[0007] Preferably, a displacement meter is provided on the bottom central axis of the pipe gallery, and the displacement meter is electrically connected to a data acquisition box.
[0008] Preferably, one side of the driving motor is electrically connected to a driving motor control box, and the driving motor control box and the driving motor constitute a lifting system.
[0009] Preferably, the top of the model box is open, a circular hole is arranged at one end of the model box, the opposite side of the circular hole is formed by disassembling steel plates and splicing, and the other two sides of the model box are arranged as tempered glass.
[0010] Preferably, a double layer of plastic film is laid on the wall of the model box, talcum powder is laid between the double layers of plastic film, and the cavity formed by the plastic film is filled with soil.
[0011] Preferably, the earth pressure box is arranged at the top and bottom of the pipe gallery, and the output end of the driving motor is connected to the first bottom plate
[0012] Preferably, during the orthogonal test, plate A and plate B are spliced to form an upper plate, plate C and plate D are spliced to form a lower plate, a strain rosette is arranged on one side of the top plate or bottom plate of the pipe gallery, and a strain rosette is arranged on one of the two side plates.
[0013] Preferably, during the oblique test, the A plate and the C plate are spliced to form an upper plate, and the B plate and the D plate are spliced to form a lower plate, and strain rosettes are arranged on the top plate, the bottom plate and the two side plates of the pipe gallery.
[0014] The utility model provides a test device for testing the hollowing range of the bottom of a pipe gallery structure. A driving motor is arranged at the bottom of a bottom plate of a model box, and the driving motor vibrates the bottom plate of the model box to cause soil to displace. A displacement meter, a strain rosette, and an earth pressure box are electrically connected to a data acquisition box, and then the data acquisition box is electrically connected to a PC, so that the hollowing range and strains in various directions can be clearly determined.
[0015] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0017] Figure 1 It is a schematic diagram of the overall structure of the test device of this application;
[0018] Figure 2 This is the internal structure diagram of this application;
[0019] Figure 3 A structural diagram of the bottom plate of the test device of this application;
[0020] Figure 4 The strain of the tunnel floor during the orthogonal test;
[0021] Figure 5 The strain of the side plate of the pipe gallery during the orthogonal test;
[0022] Figure 6is the strain of the bottom plate of the pipe gallery during the oblique test;
[0023] Figure 7 This is the strain of the side plate of the tunnel during the oblique test.
[0024] 1. Box frame; 2. Model box; 201. Lower plate; 202. Plate A; 203. Plate B; 204. Plate C; 205. Plate D; 206. Upper plate; 3. Drive motor; 301. Drive motor control box; 4. Soil; 5. Pipe gallery; 6. Strain rosette; 7. Soil pressure box; 8. Data acquisition box; 9. PC; 10. Round hole; 11. Ground fissure. DETAILED DESCRIPTION
[0025] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.
[0026] like Figure 1-7 As shown, the utility model provides a test device for testing the bottom emptying range of a pipe gallery 5 structure, comprising a box frame 1, a model box 2 is arranged on the top of the box frame 1, a driving motor 3 is arranged on the inner bottom of the box frame 1, and an output end of the driving motor 3 is arranged on one side of the bottom plate of the model box 2. The driving motor 3 vibrates the bottom plate of the model box 2 to cause the soil 4 to shift.
[0027] The top of the model box 2 is open to fill the model with soil. A 30 cm round hole 10 is set at one end of the model box 2 to observe the internal situation of the pipe gallery 5. The opposite side of the round hole 10 is formed by disassembling steel plates, which is convenient for filling soil and controlling height. The other two sides of the model box 2 are set as tempered glass. A double layer of plastic film is laid on the inner wall of the model box 2, and talcum powder is laid between the double layers of plastic film to reduce the friction between the wall of the model box 2 and the soil layer. The cavity formed by the plastic film is filled with soil 4, and the pipe gallery 5 is set in the soil 4, and the pipe gallery 5 is set in the model box 2. The pipe gallery 5 is provided with a strain gauge 6 and a soil pressure box 7. The strain gauge 6 and the soil pressure box 7 are electrically connected to a data acquisition box 8, and the data acquisition box 8 is electrically connected to a PC 9. A displacement meter is set on the bottom central axis of the pipe gallery 5 to measure the emptying situation of the bottom of the pipe gallery 5. The displacement meter and the data acquisition box 8 are electrically connected.
[0028] The bottom plate of the model box 2 is composed of four plates A, B, C, and D spliced together by pins. Plates A and B are spliced together to form an upper plate 206, and plates CD are spliced together to form a lower plate 201, which can be used for orthogonal model tests. Plates A and C are spliced together to form an upper plate 206, and plates BD are spliced together to form a lower plate 201, which can be used for oblique model tests. The surface strain of the pipe gallery 5 structure, the contact pressure of the top and bottom plates of the pipe gallery 5, and the displacement of the bottom of the pipe gallery 5 are measured through orthogonal and oblique model tests, and the test data are collected through a data collection box.
[0029] One side of the driving motor 3 is electrically connected to a driving motor control box 301, and the driving motor control box 301 and the driving motor 3 constitute a lifting system. The lifting system can reasonably simulate the settlement of the ground fissure 11, adopt graded settlement, control the upper plate 206 of the bottom plate to shift step by step, and accurately control the shift amount and speed of the ground fissure 11.
[0030] The earth pressure box 7 is arranged at the top and the bottom of the pipe gallery 5 , and the output end of the driving motor 3 is connected to the upper plate 206 .
[0031] During the orthogonal test, the A plate 202 and the B plate 203 are spliced to form the upper plate 206, and the C plate 204 and the D plate 205 are spliced to form the lower plate 201. Since the bottom plate and the top plate are the same, it is only necessary to set the strain rosette 6 on one side of the top plate or the bottom plate of the corridor 5, and set the strain rosette 6 on one of the two side plates.
[0032] During the oblique test, the A plate 202 and the C plate 204 are spliced to form the upper plate 206, and the B plate 203 and the D plate 205 are spliced to form the lower plate 201. Since the strains in each direction are different, strain rosettes 6 are set on the top plate, the bottom plate and the two side plates of the pipe gallery 5.
[0033] Therefore, the present application provides a test device for testing the hollowing range at the bottom of the corridor structure. A driving motor is arranged at the bottom of the bottom plate of the model box, and the driving motor vibrates the bottom plate of the model box to cause the soil to shift. The displacement meter, strain rosette, soil pressure box and data acquisition box are electrically connected, and then the data acquisition box is electrically connected to the PC, so that the hollowing range and strains in all directions can be clearly determined.
[0034] In the description of this specification, the description of reference terms such as "an experimental example", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the experimental example or example are included in at least one experimental example or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same experimental example or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more experimental examples or examples in a suitable manner.
[0035] Finally, it should be noted that the above experimental examples are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred experimental examples, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.
Claims
1. A test device for testing the bottom emptying range of a pipe gallery structure, characterized in that: The invention comprises a box frame, a model box is arranged on the top of the box frame, a driving motor is arranged on the inner bottom of the box frame, an output end of the driving motor is arranged on one side of the bottom plate of the model box, and the driving motor vibrates the bottom plate of the model box to displace the soil in the model box.
2. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: The bottom plate of the model box includes A plate, B plate, C plate and D plate.
3. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: The pipeline corridor runs through the model box horizontally, and soil is set around the pipeline corridor. Strain rosettes and soil pressure boxes are set on the pipeline corridor. The strain rosettes and soil pressure boxes are electrically connected to the data acquisition box, and the data acquisition box is electrically connected to the PC.
4. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: A displacement meter is provided on the bottom central axis of the pipe gallery, and the displacement meter is electrically connected to the data acquisition box.
5. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: One side of the driving motor is electrically connected to a driving motor control box, and the driving motor control box and the driving motor constitute a lifting system.
6. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: The top of the model box is open, a round hole is arranged at one end of the model box, the opposite side of the round hole is formed by disassembling steel plates and splicing, and the other two sides of the model box are arranged as tempered glass.
7. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: A double layer of plastic film is laid on the wall of the model box, talcum powder is laid between the double layers of plastic film, and the cavity formed by the plastic film is filled with soil.
8. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 1, characterized in that: The earth pressure box is arranged at the top and the bottom of the pipe gallery, and the output end of the driving motor is connected to the upper plate.
9. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 7, characterized in that: During the orthogonal test, plates A and B are spliced to form the upper plate, plates C and D are spliced to form the lower plate, and a strain rosette is set on one side of the top plate or bottom plate of the pipe gallery, and a strain rosette is set on one of the two side plates.
10. A test device for testing the bottom emptying range of a pipe gallery structure according to claim 7, characterized in that: During the oblique test, plates A and C are spliced together to form the upper plate, plates B and D are spliced together to form the lower plate, and strain rosettes are set on the top plate, bottom plate and two side plates of the corridor.