CN210104816U - Inner support simulation device of foundation pit supporting structure model - Google Patents
Inner support simulation device of foundation pit supporting structure model Download PDFInfo
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- CN210104816U CN210104816U CN201920529630.6U CN201920529630U CN210104816U CN 210104816 U CN210104816 U CN 210104816U CN 201920529630 U CN201920529630 U CN 201920529630U CN 210104816 U CN210104816 U CN 210104816U
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 title claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000009412 basement excavation Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an inner support simulation device of a foundation pit supporting structure model, which comprises a first bearing plate, a second bearing plate, a positioning screw rod, a connecting rod, a hollow rod and a solid screw rod; positioning screw and connecting rod pass through force sensor and connect, the connecting rod overcoat is equipped with the spring, the top pushes away the piece, the spring is equipped with the shell outward, be equipped with the scale mark of monitoring spring compression volume on the shell, the spring is close to top and is pushed away a pot head and be equipped with the spring sleeve, the solid screw overcoat is equipped with the loading, and the loading bolt that adds that solid screw axial displacement is followed to the drive loading, hollow rod one end is connected with the top pushes away the piece, the other end is connected with the loading, add the loading bolt through the rotation, make the loading drive hollow rod axial displacement, hollow rod drives the top and pushes away the piece and passes through spring sleeve compression spring, transmit power through the shell to force sensor among. The utility model discloses can simulate the supporting effect of interior support of foundation ditch to can add the uninstallation and support the internal force, can monitor the internal force and the displacement of support in the experimentation.
Description
Technical Field
The utility model relates to a foundation ditch engineering experiment technique especially relates to an interior support analogue means of excavation supporting construction model.
Background
In recent years, with the construction of a large number of high-rise and super high-rise buildings and urban subways at home and abroad, the depth and scale of a foundation pit are continuously increased, and the supporting difficulty is also continuously improved. The supporting type retaining structure has the advantages of definite stress, easiness in deformation control and the like, and is widely applied to deep foundation pit engineering. The foundation pit supporting structure is used as a temporary protection measure of a foundation pit, is a necessary measure for protecting the safety of constructors and preventing foundation pit accidents, and the stress and deformation characteristics of the foundation pit supporting structure are highly concerned in the design and construction process. Building foundation pit and supporting structure models indoors to simulate engineering practice has become a common means for researching the deep foundation pit problem. For the supporting type retaining structure, accurate simulation and monitoring of the stress and deformation characteristics of the inner support are the key points for simulating the whole process of excavation of a foundation pit indoors. At present, most of support indoor simulation devices for supporting in a foundation pit simulate a support structure of a steel support or a concrete support, mutual connection between supports cannot be achieved, and the loading and unloading process of the inner support cannot be simulated, so that an indoor model cannot accurately describe the stress and deformation conditions of a supporting structure in practical engineering. In addition, most of the existing foundation pit inner support simulation devices only monitor the internal force and do not monitor the deformation of the inner support. Therefore, it is necessary to develop an internal support simulation device that can accurately reflect the actual conditions of the engineering.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an interior support analogue means of excavation supporting construction model, the device can support the interior atress and the deformation process of supporting in the fender formula structure by accurate simulation, can realize freely adding uninstallation holding power.
In order to achieve the above purpose, the technical scheme of the utility model is that: an inner support simulation device of a foundation pit supporting structure model comprises a first bearing plate and a second bearing plate which are vertically arranged in parallel, wherein the first bearing plate and the second bearing plate are respectively fixed with a soil retaining member, and a positioning screw rod, a connecting rod, a hollow rod and a solid screw rod which are coaxially arranged are sequentially arranged between the first bearing plate and the second bearing plate;
one end of the positioning screw is fixedly connected with the first bearing plate, the other end of the positioning screw is in threaded connection with one end of the force sensor, and the other end of the force sensor is in threaded connection with one end of the connecting rod; the spring is sleeved outside the connecting rod, the stepped shell with the middle part folded in is coaxial with the connecting rod, one end of the shell is sleeved outside the spring and is provided with a scale mark for monitoring the compression amount of the spring, the other end of the shell is fixedly connected with the force sensor, the folded part of the shell is abutted against one end of the spring, the other end of the spring is also sleeved with the spring sleeve, the spring sleeve is arranged between the spring and the shell, and the outer wall of the spring sleeve is provided with a pointer corresponding to the scale mark;
the connecting rod is also sleeved with a pushing piece which slides along the axial direction of the connecting rod, the pushing piece is fixedly connected with one end of the hollow rod, the pushing piece compresses the spring through the spring sleeve under the action of the hollow rod, and the spring transmits pressure to the force sensor through the shell to realize prestress application;
the solid screw rod is sleeved with a pressurizing piece and a loading and unloading bolt for driving the pressurizing piece to move axially along the solid screw rod, the loading and unloading bolt and the pressurizing piece are integrally designed, the pressurizing piece is fixedly connected with the other end of the hollow rod, the loading and unloading bolt is in threaded connection with the solid screw rod, and the pressurizing piece drives the hollow rod to move axially by rotating the loading and unloading bolt, so that the power loading/unloading of the pushing piece is realized.
Furthermore, the tail end of the connecting rod and the hollow rod are also provided with corresponding limiting screw holes, and limiting screw rods are arranged in the limiting screw holes and fix the connecting rod and the hollow rod.
Further, the solid screw still overlaps outward and is equipped with the connecting block, and the connecting block is the cuboid form, and the connecting block is equipped with the screw hole along its axis direction, and the connecting block passes through the screw hole suit on solid screw, and the nut is fixed at the connecting block both ends, and other terminal surfaces of connecting block all are equipped with along the radial connection screw that sets up of solid screw, through being connected with other supports, stand, constitute the support system.
Further, the shell is made of organic glass.
Furthermore, the shell is also provided with a strip hole corresponding to the scale marks, and the pointer penetrates through the strip hole and can slide along the length direction of the long through hole.
Furthermore, the tail end of the connecting rod is also provided with a limiting nut for limiting the pushing piece, so that the pushing piece is prevented from falling off.
The utility model has the advantages that: the utility model provides a pair of interior support analogue means of excavation supporting construction model can simulate the supporting effect of interior support among the excavation retaining type supporting construction well, and can support the atress characteristic and the deformation condition in the real-time supervision, can realize freely adding uninstallation holding power, has simple structure, characteristics such as with low costs, workable, convenient to popularize and use.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the housing.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-2, the inner support simulation device of a foundation pit supporting structure model comprises a first bearing plate 1 and a second bearing plate 2 which are vertically arranged in parallel, wherein the first bearing plate 1 and the second bearing plate 2 are respectively fixed with a soil retaining member 20, and a positioning screw rod 3, a connecting rod 4, a hollow rod 5 and a solid screw rod 6 which are coaxially arranged are sequentially arranged between the first bearing plate 1 and the second bearing plate 2;
one end of a positioning screw rod 3 is fixedly connected with the first bearing plate 1, the other end of the positioning screw rod 3 is in threaded connection with one end of a force sensor 7, and the other end of the force sensor 7 is in threaded connection with one end of a connecting rod 4; a spring 8 is sleeved outside the connecting rod 4, a stepped shell 9 with the middle part folded is coaxially arranged with the connecting rod 4, one end of the shell 9 is sleeved outside the spring 8 and is provided with a scale mark for monitoring the compression amount of the spring 8, the other end of the shell is fixedly connected with a force sensor 7, the folded part of the shell 9 is abutted against one end of the spring 8, a spring sleeve 10 is further sleeved outside the other end of the spring 8, the spring sleeve 10 is arranged between the spring 8 and the shell 9, and the outer wall of the spring sleeve 10 is provided with a pointer 11 corresponding to the scale mark; the shell 9 is also provided with a long hole 18 corresponding to the scale mark, and the pointer 11 passes through the long hole 18 and can slide along the length direction of the long through hole 18;
the connecting rod 4 is further sleeved with a pushing piece 12 which slides along the axial direction of the connecting rod, the pushing piece 12 is fixedly connected with one end of the hollow rod 5, the pushing piece 12 compresses the spring 8 through the spring sleeve 10 under the action of the hollow rod 5, the spring 8 transmits pressure to the force sensor 7 through the shell 9, prestress application is achieved, meanwhile, in the process that the spring sleeve 10 compresses the spring 8, the pointer 11 slides along the length direction of the long strip hole, and the deformation of the supporting piece can be read through the scale indicated in the front and back direction of the pointer 11;
the solid screw 6 is externally sleeved with a pressurizing piece 13 and a loading and unloading bolt 14 for driving the pressurizing piece 13 to move along the solid screw shaft 6, the loading and unloading bolt 14 and the pressurizing piece 13 are integrally designed, the pressurizing piece 13 is fixedly connected with the other end of the hollow rod 5, the loading and unloading bolt 14 is in threaded connection with the solid screw 6, and the pressurizing piece 13 drives the hollow rod 5 to move axially by rotating the loading and unloading bolt 14, so that the power loading/unloading of the pushing piece 12 is realized.
The tail end of the connecting rod 4 and the hollow rod 5 are also provided with corresponding limiting screw holes, and limiting screw rods 15 are arranged in the limiting screw holes to fix the connecting rod 4 and the hollow rod 5. When the simulated concrete supports, because the deformation of the concrete supports is extremely small, the limiting screw 15 is installed, so that the connecting rod 4 and the hollow rod 5 are fixed to limit the deformation of the simulated rod piece, and the deformation characteristic of the simulated concrete supports is realized. When the steel support is simulated, the limit screw 15 is removed because the deformation of the steel support is large, and the connection and fixation of the connecting rod 4 and the hollow rod 5 are released, so that the deformation characteristic of the simulated steel support is realized.
The solid screw 6 still overlaps outward and is equipped with connecting block 16, and connecting block 16 is the cuboid form, and connecting block 16 is equipped with the screw hole along its axis direction, and connecting block 16 passes through the screw hole suit on solid screw 6, and connecting block 16 both ends are fixed through nut 17, and other terminal surfaces of connecting block 16 all are equipped with along the radial connection screw that sets up of solid screw 6, through being connected with other supports, stand, constitute the support system.
The tail end of the connecting rod 4 is also provided with a limiting nut 19 for limiting the pushing piece 12, so that the pushing piece 12 is prevented from falling off.
The housing 9 is made of organic glass and is designed to be opened up and down, as shown in fig. 2.
The embodiment can well simulate the supporting effect of the inner support in the supporting and retaining type supporting structure of the foundation pit indoors, monitor the stress and deformation of the support in real time, and can connect a plurality of supporting rod pieces and the stand columns to form a supporting system, so that the stability is good.
It is to be understood that the specific embodiments described are merely illustrative of and not restrictive on the broad invention, and that modifications and variations such as would be known to those skilled in the art are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. An inner support simulation device of a foundation pit supporting structure model is characterized by comprising a first bearing plate and a second bearing plate which are vertically arranged in parallel, wherein the first bearing plate and the second bearing plate are respectively fixed with a soil retaining member;
one end of the positioning screw is fixedly connected with the first bearing plate, the other end of the positioning screw is in threaded connection with one end of the force sensor, and the other end of the force sensor is in threaded connection with one end of the connecting rod; the spring is sleeved outside the connecting rod, the stepped shell with the middle part folded in is coaxial with the connecting rod, one end of the shell is sleeved outside the spring and is provided with a scale mark for monitoring the compression amount of the spring, the other end of the shell is fixedly connected with the force sensor, the folded part of the shell is abutted against one end of the spring, the other end of the spring is also sleeved with the spring sleeve, the spring sleeve is arranged between the spring and the shell, and the outer wall of the spring sleeve is provided with a pointer corresponding to the scale mark;
the connecting rod is also sleeved with a pushing piece which slides along the axial direction of the connecting rod, the pushing piece is fixedly connected with one end of the hollow rod, the pushing piece compresses the spring through the spring sleeve under the action of the hollow rod, and the spring transmits pressure to the force sensor through the shell to realize prestress application;
the solid screw rod is sleeved with a pressurizing piece and a loading and unloading bolt for driving the pressurizing piece to move axially along the solid screw rod, the loading and unloading bolt and the pressurizing piece are integrally designed, the pressurizing piece is fixedly connected with the other end of the hollow rod, the loading and unloading bolt is in threaded connection with the solid screw rod, and the pressurizing piece drives the hollow rod to move axially by rotating the loading and unloading bolt, so that the power loading/unloading of the pushing piece is realized.
2. The internal support simulation device of a foundation pit supporting structure model as claimed in claim 1, wherein the connecting rod has a corresponding limit screw hole at the end thereof and the hollow rod, and a limit screw is provided in the limit screw hole to fix the connecting rod and the hollow rod.
3. The inner support simulation device for the foundation pit supporting structure model as claimed in claim 1, wherein the solid screw is further sleeved with a connecting block, the connecting block is rectangular, the connecting block is provided with a threaded hole along an axial direction of the connecting block, the connecting block is sleeved on the solid screw through the threaded hole, two ends of the connecting block are fixed through nuts, other end faces of the connecting block are provided with connecting threaded holes arranged along a radial direction of the solid screw, and the connecting block is connected with other supports and columns to form a support system.
4. The internal support simulator of an excavation supporting structure model of claim 1, wherein the outer shell is made of plexiglass.
5. The inner support simulator of a supporting structure model of an excavation as claimed in claim 1, wherein the housing further has a long hole corresponding to the graduation line, and the pointer passes through the long hole and can slide along the length direction of the long through hole.
6. The inner support simulator of an excavation supporting structure model as claimed in claim 1, wherein the end of the connecting rod is further provided with a limit nut for limiting the pushing member to prevent the pushing member from falling off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920529630.6U CN210104816U (en) | 2019-04-18 | 2019-04-18 | Inner support simulation device of foundation pit supporting structure model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920529630.6U CN210104816U (en) | 2019-04-18 | 2019-04-18 | Inner support simulation device of foundation pit supporting structure model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210104816U true CN210104816U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920529630.6U Active CN210104816U (en) | 2019-04-18 | 2019-04-18 | Inner support simulation device of foundation pit supporting structure model |
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| CN (1) | CN210104816U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049381A (en) * | 2021-03-11 | 2021-06-29 | 深圳市勘察研究院有限公司 | Foundation pit support simulation test device and system |
| CN113338300A (en) * | 2021-06-22 | 2021-09-03 | 石家庄铁道大学 | Combined type cross brace structure for foundation pit support |
| CN115788398A (en) * | 2022-10-27 | 2023-03-14 | 西北核技术研究所 | Centering installation device and method for flexible sensor support |
-
2019
- 2019-04-18 CN CN201920529630.6U patent/CN210104816U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049381A (en) * | 2021-03-11 | 2021-06-29 | 深圳市勘察研究院有限公司 | Foundation pit support simulation test device and system |
| CN113338300A (en) * | 2021-06-22 | 2021-09-03 | 石家庄铁道大学 | Combined type cross brace structure for foundation pit support |
| CN115788398A (en) * | 2022-10-27 | 2023-03-14 | 西北核技术研究所 | Centering installation device and method for flexible sensor support |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240115 Address after: 201800 Room 208, No. 37, Lane 588, Shuping Road, Juyuan New District, Jiading District, Shanghai Patentee after: China Railway 24th Bureau Group Shanghai Construction Investment Co.,Ltd. Patentee after: Fujian University of Science and Technology Address before: No. 33 Xifeng Road, Jin'an District, Fuzhou City, Fujian Province, 356946 Patentee before: FUZHOU TIEJIAN CONSTRUCTION CO.,LTD. Patentee before: FUJIAN University OF TECHNOLOGY |
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| TR01 | Transfer of patent right |