CN110187080B - Modular soil box for subway similarity simulation test - Google Patents
Modular soil box for subway similarity simulation test Download PDFInfo
- Publication number
- CN110187080B CN110187080B CN201910558112.1A CN201910558112A CN110187080B CN 110187080 B CN110187080 B CN 110187080B CN 201910558112 A CN201910558112 A CN 201910558112A CN 110187080 B CN110187080 B CN 110187080B
- Authority
- CN
- China
- Prior art keywords
- plate
- side box
- box
- box plate
- excavation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a modular soil box for a subway similarity simulation test, which comprises a box bottom plate, a first side box plate, a second side box plate, a third side box plate and a fourth side box plate, wherein the first side box plate, the second side box plate, the third side box plate and the fourth side box plate are sequentially arranged on the upper plate surface of the box bottom plate, and the first side box plate, the second side box plate, the third side box plate, the fourth side box plate and the box bottom plate are enclosed to form an open box body; the first side box plate and the third side box plate are respectively provided with a detachable excavation module, each excavation module comprises a mounting frame and a mounting plate provided with an excavation hole, the mounting plates are detachably mounted through the mounting frames, and the excavation holes are blocked by detachable blocking members; the inner cavity of the box body is communicated with the outside through an excavation hole. The excavation module with the detachable side face is designed, and the design of the soil box for the similar simulation test under the test conditions of different subway tunnel depths, different excavation diameters and the like under different similar ratio conditions can be met in different similar simulation tests.
Description
Technical Field
The invention relates to the technical field of subway construction. In particular to a modularized soil box for a subway similarity simulation test.
Background
Along with the large-scale construction of subways in China, more and more subway tunnels in soft soil areas are constructed by adopting a freezing method, at present, the influence of tunnel freezing method construction on the upper earth surface or structures is researched by many colleges and research institutions, a similar simulation test method is an important method for researching complex engineering problems, and in the conversion of actual engineering and simulation tests, a simulation test needs to manufacture a test soil box according to similar criteria to meet the conversion conditions such as test boundary conditions, loading conditions and the like. However, different projects correspond to different boundary conditions, some project core areas are smaller, so a required soil box is also smaller, some project core areas are more complex, the required soil box is relatively larger, subway construction projects mostly involve excavation, freezing and other processes, the upper part of the soil box needs to be perforated to simulate excavation, the positions of the perforated holes of different project soil boxes are different, a plurality of model tests need to manufacture a plurality of soil boxes, and waste of test materials and improvement of test cost are caused.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a modular soil box for similar simulation tests of subway, wherein an excavation module with a detachable side surface is designed, so that the design of the soil box for the similar simulation tests under the test conditions of different subway tunnel depths, different excavation diameters and the like under different similar ratio conditions can be met in different similar simulation tests.
In order to solve the technical problems, the invention provides the following technical scheme:
a modular soil box for similar simulation tests of subway comprises a box bottom plate, a first side box plate, a second side box plate, a third side box plate and a fourth side box plate, wherein the first side box plate, the second side box plate, the third side box plate and the fourth side box plate are sequentially arranged on the upper plate surface of the box bottom plate, and the first side box plate, the second side box plate, the third side box plate, the fourth side box plate and the box bottom plate are enclosed to form an open box body; the first side box plate and the third side box plate are both provided with detachable excavation modules, each excavation module comprises a mounting frame and a mounting plate provided with an excavation hole, the mounting plates are detachably mounted through the mounting frames, and the excavation holes are plugged by detachable plugging members; the inner cavity of the box body is communicated with the outside through the digging hole.
Above-mentioned modularization soil box that subway analogue simulation test used, the shutoff component includes bearing flange, shutoff board and mounting flange, bearing flange installs on the mounting panel and with excavation hole coaxial arrangement, mounting flange with bearing flange passes through bolted connection just the shutoff board sets up mounting flange with between the bearing flange, the excavation hole by the shutoff board shutoff.
According to the modular soil box for the subway similarity simulation test, the blocking plate opposite to the excavation hole is provided with the freezing pipe reserved positioning hole.
Above-mentioned modularization soil box that subway analogue simulation test used, the mounting panel is equipped with trapezoidal hole, trapezoidal hole is by the shutoff of shutoff piece.
According to the modular soil box for the subway analog simulation test, the blocking block is an acrylic plate, the blocking block is provided with the pressure relief holes, and the pressure relief holes are blocked by the blocking piece.
In the modular soil box for the subway similarity simulation test, a first observation window is arranged on the first side box plate, which is positioned on the left side or the right side of the excavation module and is adjacent to the excavation module; a second observation window is arranged on the third side box plate which is positioned on the left side or the right side of the excavation module and is adjacent to the excavation module; transparent acrylic plates are embedded in the first observation window and the second observation window respectively.
According to the modular soil box for the subway similarity simulation test, a first comprehensive window is formed in the first side box plate and is positioned above the excavation module, and reinforcing ribs are arranged in the first comprehensive window; and a second comprehensive window is arranged on the third side box plate above the excavation module, and a reinforcing rib is arranged in the second comprehensive window.
The modular soil box for the subway similarity simulation test is characterized in that the excavation module is arranged on the first side box plate adjacent to the box bottom plate on the first side box plate; on the third side box panel, the excavation module is disposed on the third side box panel adjacent to the box floor.
According to the modular soil box for the subway similarity simulation test, the second side box plate and the fourth side box plate are detachably connected with the upper plate surface of the box bottom plate respectively.
In the modular soil box for the subway similarity simulation test, the outer walls of the first side box board, the second side box board, the third side box board, the fourth side box board and the lower board surface of the box bottom board are respectively provided with a supporting framework.
The technical scheme of the invention achieves the following beneficial technical effects:
the invention achieves the purpose of reducing redesign and manufacture for different engineering tests, reduces the test cost and quickens the progress of similar simulation tests by reforming the detachable part of the soil box.
Drawings
FIG. 1 is a schematic structural diagram of a modular soil box for a subway similarity simulation test according to the present invention;
fig. 2 is a schematic structural diagram of a modular soil box for subway similarity simulation test according to the present invention.
The reference numbers in the figures denote: 1-a first side box board; 2-a second side box board; 3-a third side box panel; 4-fourth side box panel; 5-box bottom plate; 6-supporting the framework; 7-transparent acrylic sheet; 8-a second synthesis window; 10-mounting a plate; 11-digging a hole; 12-reserving a positioning hole for the freezing pipe; 13-a fixed flange; 14-a carrier flange; 15-plugging plate; 16-a mounting frame.
Detailed Description
As shown in fig. 1 and 2, the modular soil box for subway similarity simulation test of the present invention comprises a box bottom plate 5, a first side box plate 1, a second side box plate 2, a third side box plate 3 and a fourth side box plate 4, wherein the first side box plate 1, the second side box plate 2, the third side box plate 3 and the fourth side box plate 4 are sequentially installed on an upper plate surface of the box bottom plate 5, and the first side box plate 1, the second side box plate 2, the third side box plate 3, the fourth side box plate 4 and the box bottom plate 5 enclose an open box body; the first side box plate 1 and the third side box plate 3 are both provided with detachable excavation modules, each excavation module comprises a mounting frame 16 and a mounting plate 10 provided with an excavation hole 11, the mounting plates 10 are detachably mounted through the mounting frames 16, and the excavation holes 11 are blocked by detachable blocking members; the inner cavity of the box body is communicated with the outside through the digging hole 11. Wherein, on the first side box plate 1, the excavation module is arranged on the first side box plate 1 adjacent to the box bottom plate 5; on the third side box panel 3, the excavation module is arranged on the third side box panel 3 adjacent to the box bottom panel 5; the blocking component comprises a bearing flange 14, a blocking plate 15 and a fixing flange 13, wherein the bearing flange 14 is installed on the installation plate 10 and is coaxially assembled with the excavated hole 11, the fixing flange 13 is connected with the bearing flange 14 through bolts, the blocking plate 15 is arranged between the fixing flange 13 and the bearing flange 14, and the excavated hole 11 is blocked by the blocking plate 15. In this embodiment, the blocking plate 15 is an acrylic plate with a thickness of 20mm, so that the blocking plate can not leak soil under an overlying pressure condition, and the acrylic plate can be directly chiseled off to excavate a model tunnel soil body during simulated excavation so as to simulate actual engineering excavation.
In view of the fact that the tunnel is constructed by a freezing method in part of tests, in order to facilitate the laying of freezing pipes, in the embodiment, the blocking plate 15 facing the excavation hole 11 is provided with the freezing pipe reserved positioning hole 12, so that the freezing pipes can pass through conveniently, the positioning accuracy of the freezing pipes is guaranteed, and the laying time of the freezing pipes can be saved. Mounting panel 10 still is equipped with trapezoidal hole 9, trapezoidal hole 9 is by the shutoff of shutoff piece, in this embodiment, trapezoidal hole 9 is seted up and is located two open between the hole 11 and be located two open the hole 11 top open on the mounting panel 10, the shutoff piece is the ya keli board, be equipped with the pressure relief vent on the shutoff piece, the pressure relief vent is by the shutoff of shutoff piece, the shutoff piece is the round steel. The plugging block is drilled, the pressure relief holes commonly used in the freezing engineering are arranged, pressure relief in a triangular area commonly used in the subway tunnel freezing engineering can be simulated, the plugging piece is pulled out during pressure relief, and soil taking and pressure relief commonly used in the freezing engineering can be simulated. The triangular area is an area which is located between two parallel subway tunnels and above central axes of the two parallel tunnels, and when the construction is carried out by a freezing method, the soil pressure at the position is higher, and the soil is generally taken out and released in the engineering.
In order to facilitate observation of the test phenomenon, a first observation window is arranged on the first side box plate 1, which is positioned on the left side or the right side of the excavation module and is adjacent to the excavation module, on the first side box plate 1; a second observation window is arranged on the third side box plate 3 which is positioned at the left side or the right side of the excavation module and is adjacent to the excavation module; transparent acrylic plates 7 with the thickness of 10mm are embedded in the first observation window and the second observation window respectively, and changes in the soil body test process in the box body can be observed through the first observation window and the second observation window.
In order to facilitate the use in the partial tunnel underpass upper structure engineering, in this embodiment, a first comprehensive window is formed in the first side box plate 1, which is located above the excavation module, on the first side box plate 1, and a reinforcing rib is arranged in the first comprehensive window; and a second comprehensive window 8 is formed in the third side box plate 3 above the excavation module, and a reinforcing rib is arranged in the second comprehensive window 8. In this case, if the superstructure is present, the superstructure change, the sensor attachment, the transmission sensor cable, and the like can be observed using the window, and if the superstructure is absent, the baffle plates are attached to both the inside of the first integrated window and the inside of the second integrated window 8.
Because different subway tunnel construction projects are simulated, the soil consumption is greatly different, when the soil amount in the box body is large, the soil body is difficult to take out after the test is finished, and in order to facilitate filling and digging out of the soil body, the soil body is convenient to dig out by using machinery (an indoor excavator and the like).
In order to prevent the soil box from deforming under an upper loading, support frameworks 6 are arranged on the outer wall of the first side box plate 1, the outer wall of the second side box plate 2, the outer wall of the third side box plate 3, the outer wall of the fourth side box plate 4 and the lower plate surface of the box bottom plate 5, the support frameworks 6 are made of square steel pipes with the thickness of 30mm multiplied by 50mm multiplied by 5mm, and the first side box plate 1, the second side box plate 2, the third side box plate 3, the fourth side box plate 4 and the box bottom plate 5 are made of steel plates with the thickness of 10 mm. In this embodiment, the second side box plate 2 is detachably connected to the support frame 6 on the outer wall of the first side box plate 1, the support frame 6 on the outer wall of the third side box plate 3 and the box bottom plate 5 through the support frame 6 and the bolts on the outer wall of the second side box plate 2, and the fourth side box plate 4 is detachably connected to the support frame 6 on the outer wall of the first side box plate 1, the support frame 6 on the outer wall of the third side box plate 3 and the box bottom plate 5 through the support frame 6 and the bolts on the outer wall of the fourth side box plate 4. Therefore, when the required soil body length is short in the test, the second side box plate 2 and the fourth side box plate 4 can be moved towards the middle at the same time, so that the soil body length in the box body is shortened, and the test time is saved.
In the embodiment, a small hole is formed in the pressure relief position, two flanges corresponding to the small hole are installed, and an acrylic glass plate is installed on the flanges, so that freezing pressure relief in engineering can be simulated.
The invention is designed and manufactured to avoid the phenomenon that a plurality of soil boxes need to be manufactured in a plurality of model tests, the excavation module on the first side box plate 1 and the excavation structure on the third side box plate 3 can be used for testing only by changing the excavation module when the same soil box is used for different projects and different models, and the test cost required by a plurality of model tests is greatly saved.
In this embodiment, the size of the internal space of the box is 3000mm × 1500mm × 1500mm, and this size is applicable to most tunnel engineering model tests. And the steel plates used by the second side box plate 2 and the fourth side box plate 4 are 1500mm square baffles, when the test boundary condition does not need 3000mm long, the length direction of the soil box can be shortened by adopting a mode of placing the baffles at two sides, and the test time is saved.
When replacing the second side box plate 2 and the fourth side box plate 4, the bolts for fixing are firstly removed, then the second side box plate 2 or/and the fourth side box plate 4 is removed, the new first side box plate or/and the fourth side box plate 4 is replaced, and the bolts are screwed, so that the replacement of the second side box plate 2 or/and the fourth side box plate 4 can be completed.
When the plugging plate 15 is replaced, the fixing flange 13 is taken down, then the plugging plate 15 is replaced with a new one, and then the fixing flange 13 is used for fixing the plugging plate 15 on the mounting plate 10, so that the replacement of the plugging plate 15 can be completed.
When the invention is used for simulating tunnel excavation and the like in a subway similar simulation test, a little grease is smeared on the inner walls of the first side box plate 1, the second side box plate 2, the third side box plate 3 and the fourth side box plate 4 so as to reduce the friction force between the soil body, the internal structure and the inner wall of the box body in the test process.
When the model test is carried out, the excavation module used for the test is installed on the first side box plate 1 and the third side box plate 3, the corresponding plugging plates 15 are installed, soil bodies are loaded, the test systems are connected, the test is started, the plugging plates 15 are broken and disassembled during excavation to simulate excavation, the second side box plate 2 and the fourth side box plate 4 are opened after the test is completed, an indoor excavator is used for digging out the test soil bodies to be bagged, and the test is completed.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (9)
1. The modularized soil box for the similar simulation test of the subway is characterized by comprising a box bottom plate (5), a first side box plate (1), a second side box plate (2), a third side box plate (3) and a fourth side box plate (4), wherein the first side box plate (1), the second side box plate (2), the third side box plate (3) and the fourth side box plate (4) are sequentially arranged on the upper plate surface of the box bottom plate (5), and the first side box plate (1), the second side box plate (2), the third side box plate (3), the fourth side box plate (4) and the box bottom plate (5) are enclosed to form an open box body; the first side box plate (1) and the third side box plate (3) are both provided with detachable excavation modules, each excavation module comprises a mounting frame (16) and a mounting plate (10) provided with an excavation hole (11), the mounting plates (10) are detachably mounted through the mounting frames (16), and the excavation holes (11) are blocked by detachable blocking members; the inner cavity of the box body is communicated with the outside through the digging hole (11); the plugging member comprises a bearing flange (14), a plugging plate (15) and a fixing flange (13), the bearing flange (14) is installed on the installation plate (10) and is coaxially assembled with the digging hole (11), the fixing flange (13) is connected with the bearing flange (14) through bolts, the plugging plate (15) is arranged between the fixing flange (13) and the bearing flange (14), and the digging hole (11) is plugged by the plugging plate (15).
2. The modular soil box for the subway similarity simulation test as claimed in claim 1, wherein said plugging plate (15) facing said excavated hole (11) is provided with a freezing pipe reserved positioning hole (12).
3. The modular soil box for the subway similarity simulation test as claimed in claim 2, wherein said mounting plate (10) is provided with trapezoidal holes (9), said trapezoidal holes (9) being blocked by blocking blocks.
4. The modular soil box for the subway similarity simulation test as claimed in claim 3, wherein said blocking block is an acrylic plate, and a pressure relief hole is formed in said blocking block, and said pressure relief hole is blocked by a blocking piece.
5. The modular soil box for the subway similarity simulation test according to claim 4, wherein a first observation window is arranged on the first side box plate (1) which is positioned at the left side or the right side of the excavation module and is adjacent to the excavation module; a second observation window is arranged on the third side box plate (3) which is positioned at the left side or the right side of the excavation module and is adjacent to the excavation module; transparent acrylic plates (7) are embedded in the first observation window and the second observation window respectively.
6. The modular soil box for the subway similarity simulation test according to claim 5, wherein a first comprehensive window is arranged on the first side box plate (1) above the excavation module, and reinforcing ribs are arranged in the first comprehensive window; and a second comprehensive window (8) is arranged on the third side box plate (3) above the excavation module, and a reinforcing rib is arranged in the second comprehensive window (8).
7. The modular soil box for the subway similarity simulation test as claimed in claim 6, wherein said excavation module is provided on said first side box plate (1) adjacent to said box bottom plate (5) on said first side box plate (1); on the third side box panel (3), the excavation module is arranged on the third side box panel (3) adjacent to the box bottom panel (5).
8. A modular soil box for a subway similarity simulation test as claimed in any one of claims 1-7, wherein said second side box board (2) and said fourth side box board (4) are detachably connected with the upper surface of said box bottom board (5).
9. The modular soil box for the subway similarity simulation test according to any one of claims 1 to 7, wherein supporting frameworks (6) are arranged on the outer walls of the first side box plate (1), the second side box plate (2), the third side box plate (3), the fourth side box plate (4) and the lower plate surface of the box bottom plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558112.1A CN110187080B (en) | 2019-06-26 | 2019-06-26 | Modular soil box for subway similarity simulation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558112.1A CN110187080B (en) | 2019-06-26 | 2019-06-26 | Modular soil box for subway similarity simulation test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110187080A CN110187080A (en) | 2019-08-30 |
| CN110187080B true CN110187080B (en) | 2022-02-11 |
Family
ID=67723346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910558112.1A Active CN110187080B (en) | 2019-06-26 | 2019-06-26 | Modular soil box for subway similarity simulation test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110187080B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693675B (en) * | 2020-06-23 | 2021-06-11 | 中山大学 | Tunnel non-excavation construction test device and method capable of simulating penetration of existing structures |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694160A (en) * | 2009-10-22 | 2010-04-14 | 中煤第一建设公司第四十九工程处 | Rapid construction process for sinking vertical shaft pit shaft with large diameter on deep surface soil layer by utilizing freezing method |
| CN102175831B (en) * | 2010-12-30 | 2014-01-29 | 同济大学 | Side cover plate for geotechnical engineering physical model test |
| CN203241409U (en) * | 2013-04-27 | 2013-10-16 | 中国石油天然气集团公司 | Horizontal directional drilling crossing simulation test soil box |
| CN206515156U (en) * | 2017-03-13 | 2017-09-22 | 长沙理工大学 | A kind of multi-functional indoor model test device |
| CN207571130U (en) * | 2017-11-17 | 2018-07-03 | 深圳市市政设计研究院有限公司 | One kind is used to simulate the interactional testing equipment of more hole tunnels |
| CN108445185A (en) * | 2018-03-11 | 2018-08-24 | 北京工业大学 | One kind can opening door multifunctional tunnel Excavation simulation threedimensional model testing stand |
| CN108362864B (en) * | 2018-03-19 | 2023-08-29 | 北京交通大学 | Multifunctional combined tunnel excavation similar model test device |
-
2019
- 2019-06-26 CN CN201910558112.1A patent/CN110187080B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110187080A (en) | 2019-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103452144B (en) | Large-scale three-dimensional comprehensive simulation test bench for geotechnical engineering | |
| CN206177607U (en) | Tunnel model subside with load test case | |
| CN105781561A (en) | Indoor earth pressure balance shield tunneling simulation system for studying soft ground stress response | |
| CN110187080B (en) | Modular soil box for subway similarity simulation test | |
| CN102175831B (en) | Side cover plate for geotechnical engineering physical model test | |
| CN105842421A (en) | Foundation pit model testing apparatus capable of simulating excavation process | |
| CN103454103A (en) | Loading device for geotechnical engineering large-sized three-dimensional comprehensive simulation test bed | |
| CN101738333B (en) | Simulation test device of mine waste reservoir with adjustable gradient | |
| CN105544605A (en) | Modular assembly type comprehensive pipe gallery | |
| CN105203387B (en) | Pipeline-soil model experimental rig under the influence of place sedimentation and tomography | |
| CN102680390A (en) | Test device and method for simulating tunnel excavation to cause soil arching effect | |
| CN109837908B (en) | Foundation pit construction method | |
| CN205003148U (en) | Place subside and fault influence under pipe clay model test device | |
| CN112033993B (en) | Pipe curtain freezing similar simulation test device for quantitatively and dynamically simulating groundwater supply | |
| CN113281179B (en) | Shield tunnel excavation model test box | |
| CN109085320A (en) | A kind of multi-functional retaining wall model test apparatus | |
| CN113432997A (en) | Device and method for testing three-dimensional damage mode of tunnel face soil body of river-crossing sea shield tunnel | |
| CN203275400U (en) | Large fluid-solid coupling model test bench with prefabricated fault | |
| CN211578073U (en) | Portable electronic control programming training and learning platform | |
| CN108922368A (en) | A kind of continuous wall trench underground overall process test method and its simulator | |
| CN102568291A (en) | Pile foundation aided test teaching demonstration system for simulating multiple loading methods | |
| CN114878785A (en) | Large-scale experiment box and experiment method for researching pipe-jacking tunnel | |
| CN217587210U (en) | Three-dimensional experimental device for researching covering type karst collapse under hydraulic gradient condition | |
| CN216787147U (en) | Deep foundation pit supporting and support replacing system | |
| CN110565707A (en) | foundation pit pile-anchor supporting system physical simulation device and method based on similar theory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |