CN209816944U - Experimental device for simulating influence of foundation pit subsection excavation on tunnel - Google Patents
Experimental device for simulating influence of foundation pit subsection excavation on tunnel Download PDFInfo
- Publication number
- CN209816944U CN209816944U CN201920436027.3U CN201920436027U CN209816944U CN 209816944 U CN209816944 U CN 209816944U CN 201920436027 U CN201920436027 U CN 201920436027U CN 209816944 U CN209816944 U CN 209816944U
- Authority
- CN
- China
- Prior art keywords
- simulation
- excavation
- simulated
- supporting
- wall
- 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.)
- Expired - Fee Related
Links
- 238000009412 basement excavation Methods 0.000 title claims abstract description 102
- 238000004088 simulation Methods 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 230000011218 segmentation Effects 0.000 claims abstract description 7
- 239000011888 foil Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000002002 slurry Substances 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 19
- 239000002689 soil Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses an experimental apparatus for simulation foundation ditch segmentation excavation is to tunnel influence, including the open mold box in top, be equipped with simulation underground continuous wall in the mold box, simulation tunnel pipe, the lateral wall of underground continuous simulation wall is equallyd divide all around with the inner wall of simulation tunnel pipe and do not is equipped with a plurality of foil gauges, it will simulate underground continuous wall and fall into a plurality of simulation excavation districts to be equipped with a plurality of simulation mid-parting walls in the simulation underground continuous wall, the inside in every simulation excavation district all is equipped with the supporting mechanism who is used for supporting simulation excavation district lateral wall, supporting mechanism is connected with pressure sensor, the inside lower part in every simulation excavation district all is equipped with the bottom plate, the bottom plate is connected with resistance to plucking mechanism, every simulation excavation district all. The utility model provides an experimental apparatus can simulate out the produced influence of foundation ditch segmentation excavation process to the tunnel, can effectively simulate actual construction, can provide valuable data foundation for actual construction to supply actual construction to refer to, thereby reduce the risk of actual construction.
Description
Technical Field
The utility model relates to an experimental apparatus of simulation foundation ditch segmentation excavation to tunnel influence belongs to tunnel engineering technical field.
Background
With the acceleration of the urbanization process, the ground space is more and more crowded, so many cities in China begin to develop subways. The existing subway station construction method mostly adopts a mode of open excavation of a foundation pit, when soil in the foundation pit is excavated, the soil below is in an unloading rebounding state, the soil moves upwards to cause the foundation pit to bulge, and surrounding structures are affected.
The subway station foundation pit is a long and narrow foundation pit, the traditional excavation mode is that the step method is adopted for stepping and subsection excavation, but when an existing tunnel exists below the side, the method cannot meet the requirement of deformation of the tunnel below. Aiming at the phenomenon, the foundation pit of the subway station is excavated by adopting foundation pit subsection excavation at present, namely the foundation pit is divided into blocks, excavation is carried out in a mode of 'one digging and one jump', then, an excavated part of a pouring bottom plate is fixed by adopting uplift piles, the weight of part of unearthed soil mass is used for balancing the uplift below the foundation pit, then, the unearthed soil mass is excavated, and finally, the whole foundation pit is formed.
In order to reduce the danger of site construction, the influence of foundation pit excavation on a tunnel is usually simulated indoors by a related experimental device before the foundation pit excavation at present, and a data reference basis is provided for the site construction. However, the existing experimental device can only simulate the condition of excavation of one section, and cannot simulate the influence of the excavation of the foundation pit on the tunnel and provide valuable reference information for actual engineering.
Disclosure of Invention
The above-mentioned problem to prior art exists, the utility model aims at providing an experimental apparatus of simulation foundation ditch segmentation excavation to tunnel influence, for actual engineering provides valuable reference information, avoids the risk to take place.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an experimental apparatus for simulation foundation ditch segmentation excavation is to tunnel influence, includes the open mold box in top, be equipped with simulation underground continuous wall in the mold box, the adjacent area of simulation underground continuous wall is equipped with simulation tunnel pipe, the lateral wall of underground continuous simulation wall is equallyd divide all around with the inner wall of simulation tunnel pipe and does not be equipped with a plurality of foil gauges, it falls into a plurality of simulation excavation districts to be equipped with a plurality of simulation mid-partition walls in the simulation underground continuous wall to simulate underground continuous wall, and the inside in every simulation excavation district all is equipped with the supporting mechanism who is used for supporting simulation excavation district lateral wall, and supporting mechanism is connected with pressure sensor, and the inside lower part in every simulation excavation district all is equipped with the bottom plate that can move about from top to bottom, and the bottom plate is connected with the resistance to plucking mechanism that is.
As the preferred scheme, a plurality of supporting mechanisms with different heights are arranged inside each simulated excavation area from top to bottom.
As the preferred scheme, the supporting mechanism comprises a transverse supporting rod and a longitudinal supporting rod, two ends of the transverse supporting rod and two ends of the longitudinal supporting rod are respectively connected with the inner side wall of the simulated excavation area, one ends of the transverse supporting rod and one ends of the longitudinal supporting rod are respectively connected with the pressure sensors, and the other ends of the transverse supporting rod and the longitudinal supporting rod are respectively connected with the supporting jacks.
As a further preferred scheme, the supporting mechanism further comprises a supporting bracket, the supporting bracket is arranged on the inner side wall of the simulated excavation area and used for supporting the transverse supporting rod and the longitudinal supporting rod, and the pressure sensor and the supporting jack are respectively connected with the supporting bracket.
Preferably, a waterproof film is arranged inside the simulated excavation region.
Preferably, the anti-pulling mechanism comprises an anti-pulling jack, a pulley and a steel wire rope, one end of the steel wire rope is connected with the bottom plate, and the other end of the steel wire rope penetrates through the pulley to be connected with the anti-pulling jack.
As the preferred scheme, the slurry pumping mechanism comprises a water pipe, one end of the water pipe is communicated with the simulated excavation area, and the other end of the water pipe is connected with a water pump unit.
As the preferred scheme, the box body of the simulation box comprises a box body upper layer and a box body lower layer, the top of the box body upper layer is open, and the simulation underground continuous wall, the simulation tunnel pipe and the simulation mid-partition wall are arranged in the box body upper layer.
Compared with the prior art, the utility model has the advantages of:
the experimental device provided by the utility model can simulate the influence of the excavation process of the foundation pit on the tunnel, effectively simulate the actual construction, and provide valuable data basis for the actual construction for reference of the actual construction, thereby reducing the risk of the actual construction; moreover, the utility model also has the advantages of simple structure, convenient use and the like, and has extremely strong practical value.
Drawings
Fig. 1 is a top view of an experimental apparatus for simulating the influence of the segmental excavation of the foundation pit on the tunnel provided by the utility model;
FIG. 2 is a top view of a simulated underground diaphragm wall in the test rig provided by the present invention;
fig. 3 is a schematic diagram of a simulated excavation region in the testing apparatus provided by the present invention;
FIG. 4 is a cross-sectional view of the test device of the present invention taken along the direction A-A;
FIG. 5 is a cross-sectional view of the test device of the present invention taken along the direction B-B;
the numbers in the figures are as follows: 1. a model box; 11. the upper layer of the box body; 12. a lower layer of the box body; 2. simulating an underground diaphragm wall; 3. simulating a tunnel pipe; 4. a strain gauge; 5. simulating an intermediate wall; 6. a support mechanism; 61. a transverse support bar; 62. a longitudinal support bar; 63. supporting the jack; 64. a support bracket; 7. a pressure sensor; 8. a base plate; 9. an anti-pulling mechanism; 91. a uplift resistant jack; 92. a pulley; 93. a wire rope; 10. a slurry pumping mechanism; 101. a water pipe; 102. a water pump unit; A/B/C/D/E, simulating an excavation area.
Detailed Description
The technical solution of the present invention will be further clearly and completely described below with reference to the accompanying drawings and examples.
Examples
Please refer to fig. 1 to 5: the utility model provides an experimental device for simulating the influence of foundation pit segmental excavation on a tunnel, which comprises a model box 1 with an open top, wherein a simulated underground continuous wall 2 is arranged in the model box 1, a simulated tunnel pipe 3 is arranged in the adjacent area of the simulated underground continuous wall 2, a plurality of strain gauges 4 are respectively arranged on the periphery of the outer side wall of the underground continuous simulated wall 2 and on the inner wall of the simulated tunnel pipe 3, a plurality of simulated middle partition walls 5 are arranged in the simulated underground continuous wall 2 to divide the simulated underground continuous wall 2 into a plurality of simulated excavation areas, a supporting mechanism 6 for supporting the side wall of the simulated excavation areas is arranged in each simulated excavation area, the supporting mechanism 6 is connected with a pressure sensor 7, a bottom plate 8 which can move up and down is arranged at the lower part in each simulated excavation area, the bottom plate 8 is connected with an anti-pulling mechanism 9 for preventing the bottom plate 8 from, each simulated excavation area is connected with a slurry pumping mechanism 10. The simulation underground continuous wall 2 and the simulation intermediate wall 5 are used for simulating a maintenance structure in foundation pit engineering, the internal area of the simulation underground continuous wall 2 is used for simulating the whole foundation pit, and the simulation excavation area is used for simulating a segmented foundation pit; the supporting mechanism 6 and the pressure sensor 7 are used for simulating the supporting process in the foundation pit engineering; the bottom plate 8 is used for simulating a foundation pit bottom plate in foundation pit engineering, the uplift mechanism 9 is used for simulating an uplift pile in the foundation pit engineering, and the soil excavation and uplift pile processes in the foundation pit excavation process can be simulated through the limitation of the uplift mechanism 9 on the bottom plate 8; the slurry pumping mechanism 10 is used for pumping slurry in the simulated excavation area and simulating a sectional slurry pumping process in the foundation pit sectional excavation process; the equipment can be used for simulating the segmental excavation construction of the foundation pit; meanwhile, the strain gauge 4 is arranged, so that the deformation conditions of the simulated underground diaphragm wall 2 and the simulated tunnel pipe 3 in the simulated construction process can be recorded in real time, the influence of the segmented excavation of the foundation pit on the tunnel can be simulated, and a valuable data basis is provided for actual construction.
As can be seen from fig. 1, 2, 4 and 5, a plurality of supporting mechanisms 6 with different heights are arranged inside each simulated excavation area from top to bottom. In the process of excavation of the foundation pit section, along with continuous slurry pumping of the slurry pumping mechanism 10 to the simulated excavation area, the pressure born by the side walls with different heights in the simulated excavation area changes, and the supporting mechanisms 6 with different heights are arranged, so that the excavation and slurry pumping process of the foundation pit in actual construction can be simulated more truly and accurately.
In this embodiment, the supporting mechanism 6 includes a transverse supporting rod 61 and a longitudinal supporting rod 62, two ends of the transverse supporting rod 61 and the longitudinal supporting rod 62 are respectively connected to the inner side wall of the simulated excavation area, and the transverse supporting rod 61 and the longitudinal supporting rod 62 can simultaneously support the transverse direction and the longitudinal direction of the simulated excavation area, so as to form a supporting plane in the simulated excavation area, effectively support the simulated excavation area and the simulated underground diaphragm wall 2, and further resist the simulated soil pressure outside the simulated underground diaphragm wall 2. One end of each of the transverse support rod 61 and the longitudinal support rod 62 is connected with the pressure sensor 7, and the pressure sensors 7 are used for detecting the pressure conditions borne by the inner wall side of the simulated excavation area and the simulated underground continuous wall 2. The other ends of the transverse supporting rod 61 and the longitudinal supporting rod 62 are respectively connected with a supporting jack 63, and the supporting jacks play a role in jacking the transverse supporting rod 61 and the longitudinal supporting rod 62, so that the transverse supporting rod 61 and the longitudinal supporting rod 62 can better support a simulated excavation area.
Further, the supporting mechanism 6 further comprises a supporting bracket 64, the supporting bracket 64 is arranged on the inner side wall of the simulated excavation area and used for supporting the transverse supporting rod 61 and the longitudinal supporting rod 62, and the pressure sensor 7 and the supporting jack 63 are respectively connected with the supporting bracket 64.
The number of the supporting mechanisms 6 can be flexibly adjusted according to the heights of the underground continuous simulation wall 2 and the simulation intermediate wall 5, namely, the height of the simulation excavation area, for example, in the embodiment, two supporting mechanisms 6 with different heights are arranged in each simulation excavation area, namely, two layers of plane supports can be formed in the simulation excavation area.
The number of the transverse support rods 61 and the longitudinal support rods 62 in the support mechanism 6 of each height can also be flexibly adjusted according to the area of the simulated excavation area, for example, in the embodiment, two transverse support rods 61 and one longitudinal support rod 62 are arranged in the support mechanism 6 of each height.
In this embodiment, a plurality of strain gauges 4 are arranged on the periphery of the outer side wall of the underground continuous simulation wall 2, the strain gauges 4 are used for recording the stress and deformation conditions of the outer side wall of the underground continuous simulation wall 2 in the foundation pit excavation construction process, and further the stress and deformation conditions of the foundation pit side wall in the foundation pit excavation construction process are simulated, for better simulation of the stress and deformation conditions of the foundation pit side wall, the strain gauges 4 on the underground continuous simulation wall 2 are arranged in the adjacent areas of the joints of the supporting mechanisms 6 and the underground continuous simulation wall 2, for example, specifically, the adjacent areas of the joints of the transverse supporting rods 61 and the longitudinal supporting rods 62 and the underground continuous simulation wall 2.
The number of the simulated intermediate walls 5 is flexibly adjusted according to actual conditions, for example, in the present embodiment, four simulated intermediate walls 5 are provided to divide the simulated underground diaphragm wall 2 into five simulated excavation areas, such as A, B, C, D, E in fig. 3, which represents five consecutive different simulated excavation areas divided by the simulated intermediate walls 5.
In addition, in the present application, a waterproof film (not shown) is provided inside the simulated excavation region to prevent penetration of slurry.
As shown in fig. 4 and 5, the anti-pulling mechanism 9 includes an anti-pulling jack 91, a pulley 92 and a cable 93, one end of the cable 93 is connected to the bottom plate 8, and the other end passes through the pulley 92 to be connected to the anti-pulling jack 91. During the simulation grout pumping construction, the thick liquid in the simulation excavation district is taken out gradually, and soil body and thick liquid above the bottom plate 8 are unloaded and then lead to bottom plate 8 upwards to kick-back, and at this moment, wire rope 93 can exert the pulling force to bottom plate 8 under the effect of resistance to plucking jack 91 and pulley 92, fixes bottom plate 8 restraint, prevents that bottom plate 8 from upwards moving, and this process can simulate out the resistance to plucking pile of foundation ditch excavation in-process. In order to ensure the uplift pile effect and the overall stability of the device, the number of the uplift mechanisms 9 may be one or more, for example, in this embodiment, the number of the uplift mechanisms 9 is two, and two steel wire ropes 93 are connected to the bottom plate 8, so that the effect on the bottom plate 8 is better.
As shown in fig. 1 and 4, the slurry pumping mechanism 10 includes a water pipe 101, one end of the water pipe 101 is communicated with the simulated excavation region, and the other end is connected with a water pump unit 102. When slurry is pumped, the water pump unit 102 is started, and slurry in the simulated excavation area is pumped out through the water pipe 101 under the action of the water pump unit 102. The water pump unit 102 includes at least one water pump, all the water pipes 101 may be connected to one water pump together, or each water pipe 102 may be connected to an individual water pump, and the water pump unit 102 further includes a control unit for controlling the on/off of the water pump.
As shown in fig. 4 and 5, the simulation box 1 includes a box upper layer 11 and a box lower layer 12, the top of the box upper layer 11 is open, and the simulation underground continuous wall 2, the simulation tunnel pipe 3 and the simulation intermediate wall 5 are arranged in the box upper layer 11, so as to facilitate installation of equipment, filling of simulation soil, and injection and extraction of slurry. The lower tank layer 12 may be used to support the upper tank layer 11.
The anti-pulling jack 91 and the pulley 92 in the anti-pulling mechanism 9 are arranged in the lower layer 12 of the box body, one end of the steel wire rope 93 is connected with the anti-pulling jack 91, and the other end of the steel wire rope passes through the pulley 92 and the lower layer 12 of the box body and then is connected with the bottom plate 8, so that the anti-pulling mechanism 9 is protected.
Simulation foundation ditch segmentation excavation when using to the experimental apparatus of tunnel influence:
1) arranging an experimental device:
an anti-pulling jack 91 and a pulley 92 in the anti-pulling mechanism 9 are arranged in the lower layer 12 of the box body, one end of a steel wire rope 93 and the anti-pulling jack 91 are arranged, and the other end of the steel wire rope passes through the pulley 92 and the lower layer 12 of the box body; placing a simulated soil body into the upper layer 11 of the box body, installing a simulated tunnel pipe 3 when the simulated soil body is placed to the bottom burial depth of a designed tunnel, wherein the inner wall of the simulated tunnel pipe 3 is provided with a plurality of strain gauges 4; when the simulated soil body is placed to the embedding depth, the simulated underground continuous wall 2 is inserted, then a plurality of simulated intermediate walls 5 are installed in the simulated underground continuous wall 2 to divide the simulated underground continuous wall 2 into a plurality of simulated excavation areas (in the embodiment, four simulated intermediate walls 5 are installed to divide the simulated underground continuous wall 2 into A, B, C, D, E five simulated excavation areas), and then the simulated soil body is continuously filled inside and outside the simulated underground continuous wall 2; when the simulated soil body is filled to the designed elevation of the base plate of the foundation pit, the base plate 8 is respectively placed in each simulated excavation area, meanwhile, the steel wire rope 93 in the anti-pulling mechanism 9 is connected with the base plate 8, and meanwhile, waterproof membranes can be respectively paved in the simulated excavation areas to prevent water seepage of the operation space; then, installing a supporting mechanism 6 and a pressure sensor 7 in each simulated excavation region (in the embodiment, two supporting mechanisms 6 with different heights are respectively installed in each simulated excavation region, each supporting mechanism 6 comprises two transverse supporting rods 61 and a longitudinal supporting rod 62, two ends of each transverse supporting rod 61 and each longitudinal supporting rod 62 are fixed on a supporting bracket 64, and meanwhile, one end of each transverse supporting rod 61 and one end of each longitudinal supporting rod 62 are respectively connected with the pressure sensor 7, and the other end of each transverse supporting rod 61 and the other end of each longitudinal supporting rod 62 are respectively connected with a supporting jack 63); then installing a strain gauge 4 on the outer side wall of the simulated underground continuous wall 2, wherein the strain gauge 4 is arranged in the adjacent area of the joint of the supporting mechanism 6 and the underground continuous simulated wall 2; meanwhile, each simulated excavation area is respectively connected with a slurry pumping mechanism 10; continuously filling a simulated soil mass outside the simulated underground continuous wall 2, and when the simulated soil mass outside the simulated underground continuous wall 2 is filled to the designed ground elevation, pouring slurry with the same weight as the simulated soil mass into each simulated excavation area so as to balance the soil pressure outside the simulated underground continuous wall 2 and the simulated excavation areas;
2) after the arrangement is finished, simulation construction is carried out:
the area A of the simulated excavation area is taken as an example for explanation: opening the strain gauge 4 and the pressure sensor 7; starting the slurry pumping mechanism 10, pumping slurry in the area A by the slurry pumping mechanism 10 (for simulating soil excavation operation of the area A), descending the liquid level in the area A along with the pumping of the slurry, and controlling the supporting mechanism 6 with the corresponding height to continuously support the area A when the liquid level in the area A is reduced to the height of the supporting mechanism 6 with the corresponding height; when the grout in the area A is completely pumped, no grout pressure exists above the bottom plate 8, the bottom plate 8 rebounds upwards, the anti-pulling mechanism 9 is started, the anti-pulling jack 91 in the anti-pulling mechanism 9 retracts to pull the steel wire rope 93, the steel wire rope 93 exerts pulling force on the bottom plate 8 under the action of the pulley 92 and the anti-pulling jack 91, the bottom plate 8 is restrained and fixed, and therefore the bottom plate 8 is prevented from rebounding upwards, and the operation can simulate the anti-pulling pile operation in the foundation pit excavation construction engineering;
then, simulating construction is carried out on the rest simulated excavation areas according to the operation of the area A;
in addition, when the construction is simulated, because the strain gauge 4 and the pressure sensor 7 are both in an open state, the pressure sensor 7 can record the soil pressure conditions from the outside and the supporting conditions inside borne by the underground continuous wall 2 and the area A in the construction process; the deformation conditions of the simulated underground diaphragm wall 2 and the simulated tunnel pipe 3 in the construction process of foundation pit excavation can be recorded through the strain gauge 4, and then the influence of the foundation pit subsection excavation construction on the simulated tunnel pipe 3 is simulated.
It is finally necessary to point out here: the above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides an experimental apparatus for simulation foundation ditch segmentation excavation is to tunnel influence which characterized in that: including the open mold box in top, be equipped with simulation underground continuous wall in the mold box, the adjacent area of simulation underground continuous wall is equipped with simulation tunnel pipe, the lateral wall of underground continuous simulation wall is equallyd divide all around with the inner wall of simulation tunnel pipe and does not be equipped with a plurality of foil gauges, be equipped with a plurality of simulation mid-board in the simulation underground continuous wall and will simulate underground continuous wall and fall into a plurality of simulation excavation districts, the inside in every simulation excavation district all is equipped with the supporting mechanism who is used for supporting simulation excavation district lateral wall, and supporting mechanism is connected with pressure sensor, and the inside lower part in every simulation excavation district all is equipped with the bottom plate that can move about from top to bottom, and the bottom plate is connected with the resistance to plucking mechanism that is used for preventing the bottom plate rebound.
2. The experimental facility for simulating the influence of the segmental excavation of the foundation pit on the tunnel according to claim 1, wherein: and a plurality of supporting mechanisms with different heights are arranged in each simulated excavation area from top to bottom.
3. The experimental facility for simulating the influence of the segmental excavation of the foundation pit on the tunnel according to claim 1 or 2, wherein: the supporting mechanism comprises a transverse supporting rod and a longitudinal supporting rod, the two ends of the transverse supporting rod and the two ends of the longitudinal supporting rod are respectively connected with the inner side wall of the simulated excavation area, one ends of the transverse supporting rod and the longitudinal supporting rod are respectively connected with a pressure sensor, and the other ends of the transverse supporting rod and the longitudinal supporting rod are respectively connected with a supporting jack.
4. The experimental facility for simulating the influence of the segmental excavation of the foundation pit on the tunnel according to claim 3, wherein: the supporting mechanism further comprises a supporting bracket, the supporting bracket is arranged on the inner side wall of the simulated excavation area and used for supporting the transverse supporting rod and the longitudinal supporting rod, and the pressure sensor and the supporting jack are connected with the supporting bracket respectively.
5. The experimental facility for simulating the influence of the segmental excavation of the foundation pit on the tunnel according to claim 1, wherein: the anti-pulling mechanism comprises an anti-pulling jack, a pulley and a steel wire rope, one end of the steel wire rope is connected with the bottom plate, and the other end of the steel wire rope penetrates through the pulley to be connected with the anti-pulling jack.
6. The experimental facility for simulating the influence of the segmental excavation of the foundation pit on the tunnel according to claim 1, wherein: the slurry pumping mechanism comprises a water pipe, one end of the water pipe is communicated with the simulated excavation area, and the other end of the water pipe is connected with a water pump unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920436027.3U CN209816944U (en) | 2019-04-02 | 2019-04-02 | Experimental device for simulating influence of foundation pit subsection excavation on tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920436027.3U CN209816944U (en) | 2019-04-02 | 2019-04-02 | Experimental device for simulating influence of foundation pit subsection excavation on tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209816944U true CN209816944U (en) | 2019-12-20 |
Family
ID=68878307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920436027.3U Expired - Fee Related CN209816944U (en) | 2019-04-02 | 2019-04-02 | Experimental device for simulating influence of foundation pit subsection excavation on tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209816944U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089624A (en) * | 2021-03-29 | 2021-07-09 | 天津大学 | Adjacent foundation pit asynchronous excavation simulation test device and test method |
| CN113281490A (en) * | 2021-05-13 | 2021-08-20 | 中国科学院武汉岩土力学研究所 | Modular tunnel segmentation excavation analog system |
| CN114184137A (en) * | 2021-12-15 | 2022-03-15 | 四川农业大学 | Tunnel deformation monitoring system and method based on long-gauge-length optical fiber sensing technology |
| CN114482150A (en) * | 2022-01-25 | 2022-05-13 | 浙江工业大学 | Test device for simulating influence and active control of foundation pit excavation adopting supporting servo system on tunnel |
-
2019
- 2019-04-02 CN CN201920436027.3U patent/CN209816944U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089624A (en) * | 2021-03-29 | 2021-07-09 | 天津大学 | Adjacent foundation pit asynchronous excavation simulation test device and test method |
| CN113281490A (en) * | 2021-05-13 | 2021-08-20 | 中国科学院武汉岩土力学研究所 | Modular tunnel segmentation excavation analog system |
| CN114184137A (en) * | 2021-12-15 | 2022-03-15 | 四川农业大学 | Tunnel deformation monitoring system and method based on long-gauge-length optical fiber sensing technology |
| CN114482150A (en) * | 2022-01-25 | 2022-05-13 | 浙江工业大学 | Test device for simulating influence and active control of foundation pit excavation adopting supporting servo system on tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209816944U (en) | Experimental device for simulating influence of foundation pit subsection excavation on tunnel | |
| CN111206627B (en) | Centrifugal model test device and method for influencing existing pile foundation by tunnel-foundation pit multiple excavation | |
| CN106596268B (en) | Multi-immersion working condition simulation test model box and test method | |
| CN104374648B (en) | A kind of experimental rig and method for testing dynamic shear characteristic between pile tube and the slip casting soil body | |
| Wang et al. | Vertical performance of suction bucket foundation for offshore wind turbines in sand | |
| KR100199297B1 (en) | Method and apparatus for subterranean load cell testing | |
| CN106226112A (en) | A kind of multi-functional reduced scale tunnel structure force model response characteristic laboratory test system and method | |
| CN103835324A (en) | Seismic response control test device of frame anchor rod slope anchoring structure and construction method | |
| CN106638725A (en) | Pipe pile soil squeezing effect testing apparatus and method | |
| US7909541B1 (en) | Apparatus and method for improved grout containment in post-grouting applications | |
| CN109709308A (en) | One kind adopting water type ground fissure physical model test device and test method | |
| CN111855426A (en) | Vertical resistance to compression static load test device of engineering stake | |
| CN108362856B (en) | Model experiment device for simulating long-term ground settlement of urban high-density area | |
| KR100480297B1 (en) | Road-cell, apparatus for testing bearing power of subterranean concrete pile and method for testing bearing power using the same | |
| CN104374650A (en) | Testing device and method for testing static force shear property between tubular pile and grouting soil body | |
| CN105220719B (en) | Deep Thick Soft Ground Area bridge struction pile method for correcting error | |
| CN106948386B (en) | Soil filling side frictional resistance model test device and test method thereof | |
| CN209841546U (en) | Pipe jacking experiment box | |
| CN115478568B (en) | Pile soil contact surface shearing experiment device for drainage pile | |
| Craig | Spud-Can Foundations: Installation with Deep Penetration and Subsequent Removal. | |
| CN111402701A (en) | Equal-load replacement light roadbed bearing detection simulation device and implementation method | |
| CN114277859B (en) | Device and method for simulating influence of asymmetric foundation pit excavation on adjacent existing tunnels | |
| CN114593927B (en) | Method for carrying out prototype test of shield tunnel by using middle wind well | |
| CN106948388B (en) | Device and method for testing foundation uplift caused by foundation pit excavation through magnetic ring type | |
| CN210797676U (en) | Device for simulating overall process of foundation pit inrush disaster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |