CN205712219U - A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test - Google Patents
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test Download PDFInfo
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- CN205712219U CN205712219U CN201620275447.4U CN201620275447U CN205712219U CN 205712219 U CN205712219 U CN 205712219U CN 201620275447 U CN201620275447 U CN 201620275447U CN 205712219 U CN205712219 U CN 205712219U
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- Prior art keywords
- foundation pit
- retaining wall
- support
- excavation
- model test
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000009412 basement excavation Methods 0.000 title claims abstract description 38
- 229920001971 elastomer Polymers 0.000 claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000005336 safety glass Substances 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 26
- 239000003673 groundwater Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000002596 correlated effect Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 241000168254 Siro Species 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test.This device includes retaining wall and support.Retaining wall top is provided with multiple tracks bolt, is bolted retaining wall support；Being reserved with some fixing bolts in the middle part of retaining wall, both sides are provided with watertight rubber bar；Watertight rubber bar ensures not leak with model casing contact surface in retaining wall moving process；The one end supported has inner thread mouth, and inner thread mouth is connected with fixing bolt thread, it is achieved the installation of support.This apparatus structure is reasonable, installs easy to operate, can be used for displacement and the deformation of flexible retaining wall in excavation of foundation pit model test under simulated groundwater environment, and the excavation of foundation pit model test being correlated with and research provide a kind of effective means.
Description
Technical field
This utility model relates to a kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test, particularly relate to can consider groundwater environment and the flexible retaining wall excavation of foundation pit model test apparatus of retaining wall embedded depth change simultaneously, conveniently excess pore water pressure, soil pressure and foundation pit deformation etc. in the Excavation Process soil body are monitored.
Background technology
In strand, the deep-foundation pit engineering of riparian area face rich groundwater, construction environment is complicated and difficulty of construction is big waits challenge, and foundation pit deformation that wherein groundwater effect causes and destabilization problems are one of material risk sources of such regional deep-foundation pit engineering.
Excavation of foundation pit model test is many at present does not consider groundwater effect, and the test soil body selects dry sand, the soil pressure of the main monitoring excavation of foundation pit soil body and foundation pit deformation, has larger difference with the excavation of foundation pit situation having groundwater effect.Consider groundwater effect excavation of foundation pit model test, have research (Sun Wei. the test of coastal region deep basal pit character and theoretical research [D]. Zhejiang University, 2015.) method using fixed retaining wall, the method can only monitor excess pore water pressure in the soil body, it is impossible to obtains soil pressure and foundation pit deformation data accurately.Separately have research (Peng Shuquan. sand barricade failure mechanism grand thin see research [D]. Tongji University, 2007.) thin film is used to connect retaining wall and model casing by smearing epoxy resin after the coarse process of method of corona, the method can obtain excess pore water pressure, soil pressure and foundation pit deformation data in the test soil body, but thin film Joining Technology is complex, when lateral diaphragm wall displacement is bigger, thin film may cause breakage due to soil particle friction in moving process, it is impossible to smoothly completes test or carries out repeating test.Therefore, the most simply, the movement of retaining wall is the problem needing in strand, riverine excavation of foundation pit model test to solve under simulated groundwater environment exactly.
Lot of experiments research shows that the stress of foundation ditch, deformation and stability and retaining wall embedded depth have much relations.In Practical Project; design usually can comprise multiple retaining wall embedded depth scheme; calculate finally by finite element numerical, the method for engineering experience analogy determines unique retaining wall embedded depth design, still lacks the relevant foundation ditch design reference suggestion that the retaining wall excavation of foundation pit model test of the relevant adjusting penetrating degree of depth provides.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, this utility model provides a kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test, the retaining wall solved under the most accurate simulated groundwater environment in Excavation Process moves problem, and repeatable experimental study difference retaining wall embedded depth is on foundation ditch Water And Earth Pressures and the impact of deformation.
This utility model solves its technical problem and be the technical scheme is that a kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test, this device includes retaining wall and support, described retaining wall top is provided with multiple tracks bolt, is bolted retaining wall support；Being reserved with some fixing bolts in the middle part of described retaining wall, both sides are provided with watertight rubber bar；Described watertight rubber bar ensures not leak with model casing contact surface in retaining wall moving process；One end of described support has inner thread mouth, and inner thread mouth is connected with fixing bolt thread, it is achieved the installation of support.
Further, described support includes solid aluminum bar, expansion link and support connecting bolt；Having some grooves on described solid aluminum bar, one end has inner thread mouth；Described expansion link is hollow aluminum pipe, and expansion link has some screwed holes；Described support connecting bolt props up the groove of solid aluminum bar through the screwed hole on expansion link so that solid aluminum bar and expansion link compact siro spinning technology.
Further, described support includes the first support bar, the second support bar and sleeve；One end of described first support bar has external screw thread；One end of described second support bar has inner thread mouth, and the other end has external screw thread；Described sleeve has female thread passage, and threaded one end connects the first support bar, threaded second support bar of the other end.
Further, described watertight rubber bar is made up of semi-cylindrical rubber cavity and sheet rubber；Described sheet rubber embeds in the line of rabbet joint of retaining wall side, smears silica gel sealing and is arranged on retaining wall.
Further, described retaining wall is aluminium sheet, and the retaining wall rigidity that its thickness need to be simulated by model test determines.
Further, described retaining wall support is corrosion resistant plate.
Further, two sides that described model casing contacts with retaining wall are safety glass.
Compared with prior art, the beneficial effects of the utility model are:
1, in this utility model, retaining wall can occur corresponding displacement due to the inside and outside soil pressure difference in hole in Excavation Process, excess pore water pressure, soil pressure and foundation pit deformation in soil mass of foundation pit under the different excavating condition of monitoring, more can reflect the Water And Earth Pressures in actual base pit engineering digging process and foundation pit deformation response compared to the test method of fixed retaining wall.
2, this utility model can the base pit engineering environment of simulated groundwater effect, use the customization watertight rubber bar being made up of semi-cylindrical rubber cavity and sheet rubber to seal；Sheet rubber is embedded in the line of rabbet joint of retaining wall side, smear silica gel sealing and watertight rubber bar is arranged on retaining wall, on the one hand can reach the purpose preventing from leaking, on the other hand ensure that in retaining wall moving process, sealing rubber strip will not peel off；Semi-cylindrical rubber cavity can be crushed in retaining wall moving process, increasing the contact surface of watertight rubber bar and safety glass, be further ensured that retaining wall sealing rubber strip in moving process does not leaks with model casing contact surface, operation principle is simple, device is simple, installs easy to operate.
3, this utility model is provided with the multiple tracks bolt for fixed retaining wall support on retaining wall top, the test simulation of different retaining wall embedded depth can be realized, compared to conventional needle, the excavation models of different embedded depths is tested the method that the retaining wall needing to make differing heights completes test, eliminate the step for that the retaining wall of differing heights makes, save experimentation cost and modelling time.
4, this utility model can be with the propping operation in accurate simulation Excavation Process, and the soil body that will not excavate foundation ditch in inner support installation process has disturbing influence；It is threadably secured between inner support with retaining wall and is connected, than traditional excavation models test, inner support frame is located on retaining wall or lies directly against the method that retaining wall realizes propping, more can reflect propping situation when actual base pit engineering excavates objectively；Realized the simulation of internal support of foundation pit rigidity by control solid aluminum shank diameter and hollow aluminum bar wall thickness, more objectively reflect the inner support Effects on Engineering to excavation of foundation pit.
5, this utility model uses retractable supports element, the excavation of foundation pit test of different in width can be simulated, the support of regular length or retractable supports is used to be only used for realizing supporting the experimental considerations installed compared to traditional excavation of foundation pit model test, same set of assay device can be used to carry out the excavation of foundation pit test of many group different in width, decreasing the repacking to assay device, saved experimentation cost and modelling time, operation principle is simple, easy to operate, there is the biggest practicality.
6, this utility model according to the demand of geotechnical model test, can adjust the quantity of inner support element, and the inner support on retaining wall fixes position and the quantity of bolt, the excavation situation of the different foundation ditch of simulation.
Accompanying drawing explanation
Fig. 1 is the scalable waterproof foundation pit support device side view using the first kind to support.
Fig. 2 is the scalable waterproof foundation pit support device side view using Equations of The Second Kind to support.
Fig. 3 is retaining wall plane graph.
Fig. 4 is sealing rubber strip profile.
Fig. 5 is the waterproof foundation pit support device of scalable using the first kind to support application schematic diagram in model test.
Fig. 6 is the waterproof foundation pit support device of scalable using Equations of The Second Kind to support application schematic diagram in model test.
In figure: retaining wall 1；Retaining wall support 2；Bolt 3；Watertight rubber bar 4；Semi-cylindrical rubber cavity 4-1；Sheet rubber 4-2；Fixing bolt 5；Support 6；Solid aluminum bar 6-1；Hollow aluminum bar 6-2；Support connecting bolt 6-3；First support bar 6-4；Second support bar 6-5；Sleeve 6-6；Model casing 7；Model casing base 8；Reaction frame 9；The test soil body 10.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the waterproof foundation pit support device of this utility model scalable based on excavation of foundation pit model test, including retaining wall 1 and support 6.Described retaining wall 1 top is provided with multiple tracks bolt 3, by bolt 3 fixed retaining wall support 2；Being reserved with some fixing bolts 5 in the middle part of described retaining wall 1, both sides are provided with watertight rubber bar 4；Described watertight rubber bar 4 ensures not leak with model casing 7 contact surface in retaining wall 1 moving process；One end of described support 6 has inner thread mouth, and inner thread mouth is threadeded with fixing bolt 5, it is achieved support the installation of 6.
Preferably, described support 6 can use following two form:
One. as it is shown in figure 1, described support 6 includes solid aluminum bar 6-1, expansion link 6-2 and supports connecting bolt 6-3；Having some grooves on described solid aluminum bar 6-1, one end has inner thread mouth；Described expansion link 6-2 is hollow aluminum pipe, and expansion link 6-2 has some screwed holes；Described support connecting bolt 6-3 selects M6 bolt, props up the groove of solid aluminum bar 6-1 through the screwed hole on expansion link 6-2 so that solid aluminum bar 6-1 and expansion link 6-2 compact siro spinning technology.
Two. as in figure 2 it is shown, described support 6 includes the first support bar 6-4, the second support bar 6-5 and sleeve 6-6；One end of described first support bar 6-4 has external screw thread；One end of described second support bar 6-5 has inner thread mouth, and the other end has external screw thread；Described sleeve 6-6 has female thread passage, and threaded one end connects the first support bar 6-4, the threaded second support bar 6-5 of the other end.
As it is shown on figure 3, described retaining wall 1 is certain thickness aluminium sheet, the retaining wall Rigidity Calculation that its thickness need to be simulated by model test obtains.Described retaining wall support 2 is made up of the corrosion resistant plate that thickness is 20mm.M8 bolt selected by described bolt 3, and its position is determined by the embedded depth of retaining wall 1, and number of channels is tested, by the excavation of foundation pit changing retaining wall embedded depth, the group number needing to adjust and determined.M8 bolt selected by described fixing bolt 5, and quantity and position that its quantity and position are supported by foundation ditch determine.
As shown in Figure 4, described watertight rubber bar 4 is made up of semi-cylindrical rubber cavity 4-1 and sheet rubber 4-2；Described sheet rubber 4-2 embeds in the line of rabbet joint of retaining wall 1 side, smears silica gel sealing and is arranged on retaining wall 1, on the one hand can reach the purpose preventing from leaking, and on the other hand ensures that in retaining wall moving process, sealing rubber strip will not peel off；Described semi-cylindrical rubber cavity 4-1 can be crushed in retaining wall moving process, increases the contact surface of watertight rubber bar and safety glass, is further ensured that retaining wall sealing rubber strip in moving process does not leaks with model casing contact surface.
As shown in Figure 5, Figure 6, excavation of foundation pit model test under this utility model can be applicable to groundwater environment.Two sides that described model casing 7 contacts with retaining wall 1 are 20mm thickness safety glass, it is simple to retaining wall and the monitoring of land movement in test, and for ensureing, in retaining wall 1 moving process, drainage does not occur, the manufactured size required precision of model casing 7 is higher.
Work process of the present utility model is as follows: first select the position of bolt 3 to be fixed on retaining wall 1 by barricade support 2 according to the design embedded depth of retaining wall 1；Retaining wall 1 is placed in model casing 7, makes the watertight rubber bar 4 on retaining wall 1 vertical with the safety glass of model casing 7 both sides and be adjacent to；And the test soil body 10 inserted by backward model casing 7, bury pore water pressure sensor and soil pressure cell underground, by the most saturated for the test soil body 10 simultaneously；Installation position displacement sensor monitoring soil deformation and retaining wall displacement；Successively the test soil body 10 on the left of excavation retaining wall 1, successively excavates successively installation support 6；It is connected with the fixing bolt 5 on retaining wall 1 by supporting the female thread of 6 one end, is allowed to hold out against the reaction frame 9 being jointly fixed on model casing base 8 with model casing 7 by adjusting the length supporting 6, completes to support the installation of 6.Excess pore water pressure, soil pressure and foundation pit deformation in whole excavation of foundation pit process of the test, in the monitoring soil body, it is thus achieved that correlation test data, provides certain advisory opinion for similar design of foundation pit.
Claims (7)
1. the waterproof foundation pit support device of scalable based on excavation of foundation pit model test, this device include retaining wall (1) and
Support (6), it is characterised in that described retaining wall (1) top is provided with multiple tracks bolt (3), by the fixing gear of bolt (3)
Cob wall support (2)；Described retaining wall (1) middle part is reserved with some fixing bolts (5), and both sides are provided with watertight rubber bar (4)；
One end of described support (6) has inner thread mouth, and inner thread mouth is threadeded with fixing bolt (5).
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, described support (6) includes solid aluminum bar (6-1), expansion link (6-2) and supports connecting bolt (6-3)；Institute
Stating and have some grooves on solid aluminum bar (6-1), one end has inner thread mouth；Described expansion link (6-2) is hollow aluminum pipe,
Some screwed holes are had on expansion link (6-2)；Described support connecting bolt (6-3) is through the screwed hole on expansion link (6-2)
Prop up the groove of solid aluminum bar (6-1).
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, described support (6) includes the first support bar (6-4), the second support bar (6-5) and sleeve (6-6)；Described
One end of first support bar (6-4) has external screw thread；One end of described second support bar (6-5) has inner thread mouth, another
End has external screw thread；Described sleeve (6-6) has female thread passage, and threaded one end connects the first support bar (6-4), another
Hold threaded second support bar (6-5).
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, described watertight rubber bar (4) is made up of semi-cylindrical rubber cavity (4-1) and sheet rubber (4-2)；Described rubber
Film (4-2) embeds in the line of rabbet joint of retaining wall (1) side, smears silica gel sealing and is arranged on retaining wall (1).
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, described retaining wall (1) is aluminium sheet.
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, described retaining wall support (2) is corrosion resistant plate.
A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test the most according to claim 1, its
Being characterised by, two sides that described model casing (7) contacts with retaining wall (1) are safety glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620275447.4U CN205712219U (en) | 2016-04-01 | 2016-04-01 | A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620275447.4U CN205712219U (en) | 2016-04-01 | 2016-04-01 | A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test |
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| Publication Number | Publication Date |
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| CN205712219U true CN205712219U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620275447.4U Withdrawn - After Issue CN205712219U (en) | 2016-04-01 | 2016-04-01 | A kind of waterproof foundation pit support device of scalable based on excavation of foundation pit model test |
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| CN (1) | CN205712219U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735377A (en) * | 2016-04-01 | 2016-07-06 | 浙江大学 | Adjustable waterproof foundation pit supporting device based on foundation pit excavation model test |
| CN108951718A (en) * | 2018-06-08 | 2018-12-07 | 中国人民解放军63926部队 | The physical experiments device and method of simulating excavation |
-
2016
- 2016-04-01 CN CN201620275447.4U patent/CN205712219U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735377A (en) * | 2016-04-01 | 2016-07-06 | 浙江大学 | Adjustable waterproof foundation pit supporting device based on foundation pit excavation model test |
| CN105735377B (en) * | 2016-04-01 | 2017-11-17 | 浙江大学 | A kind of adjustable waterproof foundation pit support device based on excavation of foundation pit model test |
| CN108951718A (en) * | 2018-06-08 | 2018-12-07 | 中国人民解放军63926部队 | The physical experiments device and method of simulating excavation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20171117 |