CN106988318A - The foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in a kind of first construction - Google Patents
The foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in a kind of first construction Download PDFInfo
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- CN106988318A CN106988318A CN201710192700.9A CN201710192700A CN106988318A CN 106988318 A CN106988318 A CN 106988318A CN 201710192700 A CN201710192700 A CN 201710192700A CN 106988318 A CN106988318 A CN 106988318A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The foundation pit supporting method constructed and gone along with sb. to guard him after support is thrown the invention discloses a kind of first construction, first measure and determine to throw the design angle and construction location of support, the construction location of fender post/wall, the waist bottom elevation of waist rail, foundation ditch bottom absolute altitude, rig pore-forming is used then according to throwing support design angle and construction location to throw support hole, carry out throwing support construction, followed by the construction for carrying out fender post/wall, earth excavation is to waist bottom elevation afterwards and starts waist rail construction, continue earth excavation to foundation ditch bottom absolute altitude, complete construction, this throws support construction by first carrying out, then fender post/wall construction is carried out, earth excavation is to waist bottom elevation and carries out waist rail construction, by fender post/wall, waist rail and throwing support are connected as an entirety, continue earth excavation afterwards to foundation ditch bottom absolute altitude, complete construction, this method, which need not be stayed, sets back-pressure earthen platform, and throw support under the earthwork and pit earthwork once excavate, accelerating construction progress, improve efficiency of construction, this is invented for Base hole supporting technology field.
Description
Technical field
The present invention relates to Base hole supporting technology field, the foundation ditch branch gone along with sb. to guard him of being constructed after support is thrown in more particularly to a kind of first construction
Maintaining method.
Background technology
It is larger in foundation ditch area in existing foundation pit supporting method, in the case of cutting depth is little, to save the engineering to support
Amount, using the support form of fender post/wall+throwing support, i.e., after the completion of fender post/wall construction, lean in excavation of foundation pit, foundation ditch
Fender post/wall, which is stayed, sets back-pressure earthen platform, after the completion of the basement bottom board construction construction in the middle of foundation ditch, throws support one end and is supported on underground
On the bottom plate of room, one end is supported on fender post/wall, then excavates the back-pressure earthen platform stayed and set, and completes the construction of whole basement structure.
There is following defect in this form of construction work：First, earth excavation needs to carry out in two stages, and the first stage excavates back-pressure
The earthwork outside earthen platform, second stage excavates the back-pressure earthen platform stayed and set, due to needing to carry out basement in the middle of two benches earth excavation
The construction of bottom plate, interval time is longer, unfavorable to the tissue of earth excavation plant equipment；2nd, basement bottom board is also required to be divided to two
Stage is carried out, and the first stage carries out the construction of bottom plates of foundation ditch center section, and second stage carries out foundation ditch inner rim construction of bottom plates, stayed
If construction joint it is more, it is unfavorable to basement waterproofing；3rd, support difficulty of construction is thrown big, if using steel pipe support, two ends need
Bracket buttress is performed, difficulty is larger, if using reinforced concrete support, constructing, being tied up to reinforcing bar on the slope of back-pressure earthen platform
Bundle, model sheetinstallat, concreting considerably increase difficulty of construction；4th, difficulty is excavated greatly in back-pressure earthen platform, and back-pressure earthen platform cubic metre of earth is opened
During digging, the basement bottom board in the middle of foundation ditch has been constructed completion, and the scope of operation is narrow and small, along with the influence for throwing support, excavator operation
Space is greatly affected, and excavates difficulty very big；5th, construction speed is slow, earth excavation and the interspersed construction of basement bottom board, throws support construction
Difficulty is big, and back-pressure earthen platform earth excavation operating space is small, and these influences to construction speed directly result in construction speed than larger
Slowly, it is unfavorable for the propulsion of engineering.
The content of the invention
To solve the above problems, a kind of construction speed of present invention offer is fast, efficiency high first construction is thrown to construct after support and gone along with sb. to guard him
Foundation pit supporting method.
The technical solution adopted for the present invention to solve the technical problems is：
The foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in a kind of first construction, is comprised the following steps：
1）, measure and determine throw support design angle and construction location, the construction location of fender post/wall, waist rail waist rail bottom mark
High, foundation ditch bottom absolute altitude；
2）, according to throw support design angle and construction location use rig pore-forming for throw support hole, then will throwing support lifting be put into throwing
Support in hole, then to concrete perfusion in support is thrown, complete to throw the construction of support；
3）, according to the construction location of fender post/wall carry out fender post/wall construction；
4）, earth excavation to waist bottom elevation, then carry out waist rail construction, by fender post/wall, waist rail and throw support be connected to become
One entirety；
5）, continue earth excavation to foundation ditch bottom absolute altitude, and complete construction.
It is used as the further improvement of above-mentioned technical proposal, step 2）In, the arrangement spacing of support is thrown according to engineering practice
Calculate and determine.
It is used as the further improvement of above-mentioned technical proposal, step 2）In, throw support hole and formed using mud off pore-forming, throw support
The bottom hole absolute altitude in hole is equal to or less than design bottom hole absolute altitude.
It is used as the further improvement of above-mentioned technical proposal, step 2）In, support will be thrown and be put into throwing support Kong Zhonghou, then lay and use
In the conduit of concrete perfusion, concrete is entered by catheter perfusion to be thrown in support hole.
It is used as the further improvement of above-mentioned technical proposal, step 4）In, the construction of waist rail includes soil where waist bottom elevation
Reinforcing bar colligation, model sheetinstallat and the concreting carried out successively after layer is smooth.
As the further improvement of above-mentioned technical proposal, throw support for steel pipe throw support or prefabricated PHC pile tubes or precast square pile or
Deposited reinforced concrete pile.
It is used as the further improvement of above-mentioned technical proposal, step 2）In, throw the construction of support using rig and loop wheel machine coordinate into
Row construction.
As the further improvement of above-mentioned technical proposal, step 1 is carried out）Before, levelling of the land is first carried out to ensure construction
Plant equipment is walked and materials arrival.
Beneficial effects of the present invention：The foundation pit supporting method gone along with sb. to guard him of being constructed after this throwing support of first constructing is applied by first carrying out throwing support
Work, then carries out fender post/wall construction, earth excavation to waist bottom elevation simultaneously carries out waist rail construction, by fender post/wall, waist rail
An entirety is connected as with support is thrown, continues earth excavation afterwards to foundation ditch bottom absolute altitude, completes construction, this method need not be stayed and set back-pressure
The earthwork and pit earthwork under earthen platform, and throwing support are once excavated, and accelerating construction progress improves efficiency of construction.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the pattern foundation pit supporting structure elevation that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction；
Fig. 2 is the pattern foundation pit supporting structure plan that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction；
Fig. 3 is the throwing support construction schematic diagram that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction；
Fig. 4 is fender post/wall construction schematic diagram that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction；
Fig. 5 is the waist rail construction schematic diagram that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction；
Fig. 6 is the pattern foundation pit supporting structure profile that the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction.
Embodiment
Referring to figs. 1 to Fig. 6, the present invention throws the foundation pit supporting method gone along with sb. to guard him of being constructed after support for a kind of first construction, including following
Step：
1）, measure and determine throw support 2 design angle and construction location, the construction location of fender post/wall 4, the waist rail bottom of waist rail 1
Absolute altitude 6, foundation ditch bottom absolute altitude 3；
2）, according to throw support 2 design angle and construction location rig pore-forming for throw support hole, then by throw support 2 lifting be put into throwing support
Kong Zhong, then to concrete perfusion in support 2 is thrown, completes to throw the construction of support 2；
3）, according to the construction location of fender post/wall 4 carry out fender post/wall 4 construction；
4）, earth excavation to waist bottom elevation 6, then carry out waist rail 1 construction, by fender post/wall 4, waist rail 1 and throw support 2 connect
It is connected into as an entirety；
5）, continue earth excavation to foundation ditch bottom absolute altitude 3, and complete construction.
By first carrying out throwing the construction of support 2, then carry out fender post/wall 4 and construct, earth excavation to waist bottom elevation 6 is gone forward side by side
Row waist rail 1 is constructed, and fender post/wall 4, waist rail 1 and throwing support 2 are connected as into an entirety, continue earth excavation afterwards to foundation ditch bottom
Absolute altitude 3, completes construction, this method, which need not be stayed, sets back-pressure earthen platform, and throws the lower earthwork of support 2 and pit earthwork is once excavated, quickening
Construction speed, improves efficiency of construction.
As preferred embodiment, step 2）In, the arrangement spacing for throwing support 2 calculates determination according to engineering practice.
As preferred embodiment, step 2）In, throw support hole and formed using mud off pore-forming, throw the bottom hole mark in support hole
Height is equal to or less than design bottom hole absolute altitude.
As preferred embodiment, step 2）In, support 2 will be thrown and be put into throwing support Kong Zhonghou, then laid for irrigating mixed
The conduit of soil is coagulated, concrete is entered by catheter perfusion to be thrown in support hole.
As preferred embodiment, step 4）In, the construction of waist rail 1 is put down including the place soil layer of waist bottom elevation 6
Reinforcing bar colligation, model sheetinstallat and the concreting carried out successively after whole.
It is that steel pipe throws support or prefabricated PHC pile tubes or precast square pile or armored concrete as support 2 preferred embodiment, is thrown
Bored concrete pile.
It can meet desired steel pipe to throw support or prefabricated PHC pile tubes or precast square pile or armored concrete perfusion to throw support 2
All kinds of rigid members such as stake.
As preferred embodiment, step 2）In, the construction for throwing support 2 is constructed using rig and loop wheel machine cooperation.
Using rig and loop wheel machine coordinative construction, do mechanization operation degree is improved, labor intensity is greatly reduced.
The construction, and by the way of rig and loop wheel machine coordinative construction, improve do mechanization operation degree in advance of support 2 is thrown, is solved
The problem of 2 difficulty of support are big is thrown in the construction on the slope of back-pressure earthen platform of having determined, and reduces labor intensity.
As preferred embodiment, step 1 is carried out）Before, levelling of the land is first carried out to ensure the plant equipment row of construction
Walk and materials arrival.
As preferred embodiment, referring to figs. 1 to Fig. 6, labels 5 of the wherein Fig. 3 into Fig. 5 is ground elevation, the elder generation
The foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in construction includes following steps：
1）, carry out levelling of the land, it is ensured that the normal walking of construction equipment and materials arrival；
2）, measure and determine throw support 2 design angle and construction location, the construction location of fender post/wall 4, the waist rail bottom of waist rail 1
Absolute altitude 6, foundation ditch bottom absolute altitude 3；
3）, according to throw support 2 design angle and construction location rig pore-forming for throw support hole, further, using mud off into
Hole, the design angle that 2 are supportted with throwing into orifice angle for throwing support hole is consistent, and the bottom hole absolute altitude for throwing support hole is equal to or less than design hole
Bottom absolute altitude, that is, the bottom hole absolute altitude for throwing support hole must not be higher than design bottom hole absolute altitude, it is ensured that throwing support 2 can be applied according to design requirement
Work；
4）, throw after support hole acceptance(check), it is in place and hung in throwing support hole to throw the lifting of support 2, takes measures to control throwing support
The design bottom hole absolute altitude in hole, it is ensured that meet design requirement, then lay the conduit for concrete perfusion, concrete is filled by conduit
Note enter throw support hole in, with complete throw support 2 construction, it should be noted that by catheter perfusion under water pea gravel concreten when, should
The absolute altitude of strict control concrete surface, it is ensured that do not invade the scope of fender post/wall 4, in order to avoid the construction of influence fender post/wall 4；
5）, according to the construction location of fender post/wall 4 carry out fender post/wall 4 construction；
6）, the construction of fender post/wall 4 complete, when reach excavate age after, carry out the excavation of the earthwork, and earth excavation is to waist rail bottom
It should be noted that strengthening the protection to throwing support 2 during absolute altitude 6, earth excavation, it is to avoid collision, in case the stress of support 2 is thrown in influence；
7）, then carry out the construction of waist rail 1, the smooth of the place soil layer of waist bottom elevation 6 is carried out first, reinforcing bar is then carried out successively
The connection of colligation, model sheetinstallat and concreting, waist rail 1 and the connection of fender post/wall 4, waist rail 1 and throwing support 2 must be strict
According to design requirement, it is ensured that fender post/wall 4, waist rail 1 and throwing support 2 are linked to be an entirety, collectively constitute supporting structure system；
8）, waist rail 1 reach after design age, continue earth excavation to foundation ditch bottom absolute altitude 3, and earthwork stage excavation is to the base designed
Bottom absolute altitude 3 is cheated, excavator should be forbidden after the completion of collision throws support 2, earth excavation in digging process, you can go underground room bottom plate knot
Structure is constructed.
Throw support 2 to be constructed prior to fender post/wall 4, can avoid staying and set back-pressure earthen platform, it is to avoid earth excavation and basement bottom
The crossed construction of hardened structure, influencing each other between reduction earth excavation and basement structure crossed construction, is solved well
The problem of earth excavation, basement bottom board construction by stages, the do mechanization operation degree for throwing support 2 is improved, reduce labor intensity, plus
Fast construction speed, saves the engineering time, is that basement structure completes to create favorable conditions as early as possible.
The foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown by first constructing and has reached following technique effect：
First, the problem of solving earth excavation, basement bottom board construction by stages；
2nd, the problem of solving the interspersed construction of earth excavation, basement bottom board, interact；
3rd, the problem of throwing support difficulty of construction is big is solved；
4th, do not stay and set back-pressure earthen platform, throw the earthwork under support 2 and pit earthwork is excavated simultaneously, excavator operating space is big, well
Solve back-pressure earthen platform and excavate the problem of difficulty is big；
5th, throw the earthwork under support 2 and pit earthwork is once excavated, the influence for throwing 2 pairs of earth excavations of support is preferably minimized, greatly greatly
Fast construction speed；
6th, the construction speed of excavation of foundation pit, basement bottom board is accelerated.
Certainly, the invention is not limited in above-mentioned embodiment, those skilled in the art are without prejudice to the present invention
Equivalent variations or replacement can be also made on the premise of spirit, these equivalent deformations or replacement are all contained in the application claim
In limited range.
Claims (8)
1. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in a kind of first construction, it is characterised in that comprised the following steps：
1）, measure and determine throw support（2）Design angle and construction location, fender post/wall（4）Construction location, waist rail（1）'s
Waist bottom elevation（6）, foundation ditch bottom absolute altitude（3）；
2）, according to it is described throw support（2）Design angle and construction location use rig pore-forming for throw support hole, then by it is described throw support
（2）Lifting is put into throwing support hole, is then supportted to described throw（2）Interior concrete perfusion, completes described throw and supports（2）Construction；
3）, according to the fender post/wall（4）Construction location carry out fender post/wall（4）Construction；
4）, earth excavation to the waist bottom elevation（6）, then carry out the waist rail（1）Construction, by the fender post/wall
（4）, waist rail（1）Supportted with throwing（2）It is connected to become an entirety；
5）, continue earth excavation to foundation ditch bottom absolute altitude（3）, and complete construction.
2. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：The step
Rapid 2）In, it is described to throw support（2）Arrangement spacing according to engineering practice calculate determine.
3. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：The step
Rapid 2）In, the support hole of throwing is formed using mud off pore-forming, and the bottom hole absolute altitude for throwing support hole is equal to or less than design bottom hole
Absolute altitude.
4. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：The step
Rapid 2）In, described throw is supportted（2）Throwing support Kong Zhonghou is put into, the conduit for concrete perfusion is then laid, concrete passes through institute
Catheter perfusion is stated to enter in throwing support hole.
5. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：The step
Rapid 4）In, the waist rail（1）Construction include waist bottom elevation（6）The reinforcing bar colligation that is carried out successively after place soil layer is smooth, mould
Plate is installed and concreting.
6. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：It is described to throw
Support（2）Support or prefabricated PHC pile tubes or precast square pile or deposited reinforced concrete pile are thrown for steel pipe.
7. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：The step
Rapid 2）In, it is described to throw support（2）Construction coordinated using rig and loop wheel machine and constructed.
8. the foundation pit supporting method gone along with sb. to guard him of being constructed after support is thrown in first construction according to claim 1, it is characterised in that：Carry out institute
State step 1）Before, levelling of the land is first carried out to ensure plant equipment walking and the materials arrival of construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192700.9A CN106988318B (en) | 2017-03-28 | 2017-03-28 | foundation pit supporting method for firstly constructing cast support and then constructing enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192700.9A CN106988318B (en) | 2017-03-28 | 2017-03-28 | foundation pit supporting method for firstly constructing cast support and then constructing enclosure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988318A true CN106988318A (en) | 2017-07-28 |
| CN106988318B CN106988318B (en) | 2019-12-17 |
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ID=59412059
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710192700.9A Active CN106988318B (en) | 2017-03-28 | 2017-03-28 | foundation pit supporting method for firstly constructing cast support and then constructing enclosure |
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Citations (6)
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2017
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| CN101294390A (en) * | 2007-04-27 | 2008-10-29 | 上海市第五建筑有限公司 | Support system and construction method for smoothening-digging partial center island foundation pit |
| KR100974513B1 (en) * | 2009-07-13 | 2010-08-10 | 신세계건설(주) | Caisson type pile method |
| CN103485347A (en) * | 2012-06-07 | 2014-01-01 | 叶强 | Batter pile used for building foundation pit support and construction method thereof |
| CN103290847A (en) * | 2013-06-18 | 2013-09-11 | 福建省九龙建设集团有限公司 | Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method |
| CN105804089A (en) * | 2016-03-30 | 2016-07-27 | 广东华固工程有限公司 | Locally-deepened supporting and protecting system used after original deep foundation pit is constructed and construction method of system |
| CN205839767U (en) * | 2016-07-27 | 2016-12-28 | 中船勘察设计研究院有限公司 | A kind of deep foundation pit steel tube/concrete is combined inner supporting structure |
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