CN207079596U - A kind of board-like double-row pile foundation pit support structure of counterfort - Google Patents
A kind of board-like double-row pile foundation pit support structure of counterfort Download PDFInfo
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- CN207079596U CN207079596U CN201720973499.3U CN201720973499U CN207079596U CN 207079596 U CN207079596 U CN 207079596U CN 201720973499 U CN201720973499 U CN 201720973499U CN 207079596 U CN207079596 U CN 207079596U
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Abstract
The utility model discloses a kind of board-like double-row pile foundation pit support structure of counterfort, including the front-seat support pile and heel row support pile set along foundation pit side-wall direction time interval, the stake top of front-seat support pile and heel row support pile is respectively provided with Guan Liang, the stake top absolute altitude of front-seat support pile is less than the stake top absolute altitude of heel row support pile, it is connected between front-seat support pile and heel row support pile by continuous stake top supporting plate, between stake top supporting plate and heel row support pile counterfort plate is interval with along foundation pit side-wall direction, water-seal pile is provided with after heel row support pile, by the stake top absolute altitude for reducing front-seat support pile, both the bending resistance of heel row support pile had been given full play to, 1~2 inner support at the top of foundation ditch can be reduced again, accelerate foundation pit construction progress；Moreover, being connected between front-seat support pile and heel row support pile by stake top supporting plate with counterfort plate, the horizontal force of heel row support pile can be transferred to front-seat support pile, improve the wholeness and whole stiffness of whole supporting construction.
Description
Technical field
Foundation pit supporting construction technical field is the utility model is related to, more particularly to a kind of double-row pile foundation pit support structure.
Background technology
The utilization of the underground space plays an important role to improving ground environment.In development underground traffic, reduce urban atmosphere
While pollution, it should also advocate and build Urban Underground pipe gallery.The underground space can be developed into underground railway and underground station,
Lower road, underground parking garage, market place builet below the ground, underground civil defence projects etc., the excavation operation of the underground space be unable to do without pattern foundation pit supporting structure knot
Structure.Foundation pit supporting construction is to ensure the safety of Underground Construction and foundation ditch surrounding enviroment, to foundation pit side-wall and surrounding enviroment
Supporting and retaining system, reinforcing and the safeguard measure of use.
The more and more extensive application of double-row pile foundation pit support structure, the foundation pit supporting construction are mixed by the parallel reinforcing bar of two rows
Coagulate the space portal framed structure system that the coupling beam of native stake and stake top is formed, due to common double-row pile foundation pit support structure have it is whole
The advantages that body rigidity is big, easy construction is quick, it is adapted to use when excavation of foundation pit depth is little.When excavation of foundation pit depth is larger or
When geological conditions is poor, or when some more special situations, now using in general double-row pile pattern foundation pit supporting structure knot
Structure can not meet design requirement, how meet that it is common Double-row Piles Support knot to keep the stable and easy for construction of supporting construction
The greatest problem that structure runs into.Therefore whether the design of double-row pile foundation pit support structure is scientific and reasonable, is directly connected to engineering
Quality, progress, economic benefit and safety, therefore the rational design of double-row pile foundation pit support structure has very important meaning
Justice.
Utility model content
It is board-like double that technical problem to be solved in the utility model is to provide a kind of counterfort easy for construction, high capacity
Pile pit supporting construction.
Technical scheme used by solve above-mentioned technical problem：A kind of board-like double-row pile foundation pit support structure of counterfort, bag
Include the front-seat support pile and heel row support pile set along foundation pit side-wall direction time interval, the front-seat support pile and heel row supporting
The stake top of stake is respectively provided with Guan Liang, and the stake top absolute altitude of the front-seat support pile is less than the stake top absolute altitude of heel row support pile, the front row
Be connected between support pile and heel row support pile by continuous stake top supporting plate, the stake top supporting plate and heel row support pile it
Between along foundation pit side-wall direction be interval with counterfort plate, be provided with water-seal pile after arranging support pile in the rear.
Further, the front-seat support pile and heel row support pile are diaphram wall, the thickness of the diaphram wall
For 800~1200mm.
Further, the stake top difference in height between the front-seat support pile and heel row support pile is 3.0~6.0m.
Further, the spacing distance between the front-seat support pile and heel row support pile is 2.5m~5.0m.
Further, the stake footpath of the front-seat support pile and heel row support pile is 0.8m~2.0m.
Further, the thickness of the stake top supporting plate is 0.2m~0.5m.
Further, the thickness of the counterfort plate is 0.3m~0.6m.
Further, the counterfort plate is vertical diagonal brace, the vertical diagonal brace both ends respectively with front-seat support pile and heel row
The Guan Liang of support pile is connected.
Beneficial effect：The board-like double-row pile foundation pit support structure of this counterfort, by reducing the stake top absolute altitude of front-seat support pile, both
The bending resistance of heel row support pile has been given full play to, 1~2 inner support at the top of foundation ditch can be reduced again, has accelerated foundation ditch
Construction speed；Moreover, be connected between front-seat support pile and heel row support pile by stake top supporting plate with counterfort plate, can be by heel row branch
The horizontal force of fender pile is transferred to front-seat support pile, improves the wholeness and whole stiffness of whole supporting construction.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and examples；
Fig. 1 is the elevation of the utility model double-row pile foundation pit support structure first embodiment；
Fig. 2 is the elevation of the utility model double-row pile foundation pit support structure second embodiment；
Fig. 3 is the plan of the utility model double-row pile foundation pit support structure.
Embodiment
Referring to figs. 1 to Fig. 3, a kind of board-like double-row pile foundation pit support structure of counterfort of the utility model, including along foundation pit side-wall
The front-seat support pile 1 and heel row support pile 2 that direction time interval is set, the stake top of front-seat support pile 1 and heel row support pile 2 have
There is Guan Liang 3, the stake top absolute altitude of front-seat support pile 1 is less than the stake top absolute altitude of heel row support pile 2, front-seat support pile 1 and heel row supporting
It is connected between stake 2 by continuous stake top supporting plate 4, along foundation pit side-wall direction between stake top supporting plate 4 and heel row support pile 2
Counterfort plate 5 is interval with, water-seal pile 6 is provided with after heel row support pile 2.
Wherein, the stake footpath of front-seat support pile 1 and heel row support pile 2 be able to can also be differed with identical, front-seat support pile 1
0.8m~2.0m is designed as with the stake footpath of heel row support pile 2, front-seat support pile 1 and heel row support pile 2 can also use underground to connect
Continuous wall construction form, the thickness of diaphram wall are then designed as 800~1200mm, and the width of Guan Liang 3 is slightly larger than stake footpath, and Guan Liang is high
Degree is slightly less than a footpath.
The spacing distance of front-seat support pile 1 and heel row support pile 2 is designed as 2.5m~5.0m, front-seat support pile 1 and heel row
Stake top difference in height between support pile 2 determines according to the support capacity of heel row support pile 2,3.0~6.0m is typically designed to, to subtract
The stake of few front-seat support pile 1 is long, reduces construction costs, widens the excavation progress of the earthwork in foundation ditch, while give full play to heel row branch
The bending resistance of fender pile 2.
The thickness of stake top supporting plate 4 between front-seat support pile 1 and heel row support pile 2 is designed as 0.2m~0.5m, stake top branch
Rigid hinge of the fagging 4 as heel row support pile 2, the horizontal force of heel row support pile 2 can be transferred to front-seat support pile 1, meanwhile,
The basis of stake top supporting plate 4 and counterfort plate 5.Stake top supporting plate 4 is monolithic reinforced concrete structure, and strength grade of concrete is adopted
With C25~C50, can be poured together with the Guan Liang 3 of front-seat support pile 1.
The thickness of counterfort plate 5 is designed as 0.3m~0.6m, and counterfort plate 5 is connected with stake top supporting plate 4 and heel row support pile 2,
Counterfort plate 5 can be monolithic reinforced concrete structure, and strength grade of concrete uses C25~C50.Counterfort plate 5 can also use
Vertical diagonal brace 7, Guan Liang 3 of the vertical both ends of diagonal brace 7 respectively with front-seat support pile 1 and heel row support pile 2 are connected, and vertical diagonal brace 7 can
Using reinforced concrete structure, bracing members can also be used, during using bracing members, design strength should be reached in first of inner support
After-applied pre-applied force, to reduce the deformation of heel row support pile 2.
Preferably, shotcrete layer 8 is set before heel row support pile 2, the thickness of shotcrete layer 8 for 0.08~
0.10m, sprayed concrete strength grade are not less than C20, and configuration reinforcement net in gunite concrete, bar-mat reinforcement uses HPB300 level steel
Muscle, 6~10mm of bar diameter, 100~250mm of bar spacing.
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to
Embodiment is stated, in the technical field those of ordinary skill possessed knowledge, this practicality can also not departed from
Various changes can be made on the premise of new objective.
Claims (8)
- A kind of 1. board-like double-row pile foundation pit support structure of counterfort, it is characterised in that：Including being set along foundation pit side-wall direction time interval The front-seat support pile and heel row support pile put, the stake top of the front-seat support pile and heel row support pile is respectively provided with Guan Liang, before described The stake top absolute altitude for arranging support pile is less than the stake top absolute altitude of heel row support pile, passes through between the front-seat support pile and heel row support pile Continuous stake top supporting plate is connected, and is interval with and helps along foundation pit side-wall direction between the stake top supporting plate and heel row support pile Wallboard, water-seal pile is provided with after arranging support pile in the rear.
- 2. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The front-seat support pile It is diaphram wall with heel row support pile, the thickness of the diaphram wall is 800~1200mm.
- 3. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The front-seat support pile Stake top difference in height between heel row support pile is 3.0~6.0m.
- 4. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The front-seat support pile Spacing distance between heel row support pile is 2.5m~5.0m.
- 5. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The front-seat support pile Stake footpath with heel row support pile is 0.8m~2.0m.
- 6. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The stake top supporting plate Thickness be 0.2m~0.5m.
- 7. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The thickness of the counterfort plate Spend for 0.3m~0.6m.
- 8. the board-like double-row pile foundation pit support structure of counterfort according to claim 1, it is characterised in that：The counterfort plate is perpendicular To diagonal brace, the Guan Liang of the vertical diagonal brace both ends respectively with front-seat support pile and heel row support pile is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973499.3U CN207079596U (en) | 2017-08-04 | 2017-08-04 | A kind of board-like double-row pile foundation pit support structure of counterfort |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720973499.3U CN207079596U (en) | 2017-08-04 | 2017-08-04 | A kind of board-like double-row pile foundation pit support structure of counterfort |
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| CN207079596U true CN207079596U (en) | 2018-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513032A (en) * | 2021-03-23 | 2021-10-19 | 深圳市工勘岩土集团有限公司 | Three-row pile gravity dam combined retaining structure for filled high slope |
-
2017
- 2017-08-04 CN CN201720973499.3U patent/CN207079596U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513032A (en) * | 2021-03-23 | 2021-10-19 | 深圳市工勘岩土集团有限公司 | Three-row pile gravity dam combined retaining structure for filled high slope |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060 No. 348 East Ring Road, Guangzhou, Guangdong Patentee before: Guangzhou City Engineering Design studies total institute |