CN109898515A - Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole - Google Patents
Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole Download PDFInfo
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- CN109898515A CN109898515A CN201910302443.9A CN201910302443A CN109898515A CN 109898515 A CN109898515 A CN 109898515A CN 201910302443 A CN201910302443 A CN 201910302443A CN 109898515 A CN109898515 A CN 109898515A
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- foundation pit
- tubular pole
- wall body
- support
- body structure
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Abstract
The present invention relates to Support of Foundation Pit Excavation method in construction, Support of Foundation Pit Excavation method of specifically a kind of slope in conjunction with tubular pole.Include the following steps: A, whole excavation；B, surveying setting-out；C, drive piles D, the filling slip casting of stake core；E, crown beam is constructed；F, upper wall body structure construction；G, lower section earth excavation；H, lower section wall body structure is constructed；I, step G, H is repeated, the depth of design structure bottom plate is arrived until excavating.Sloping coefficient of the present invention reduces, and earth excavation relative quantity is small；Duration accelerates, environmentally protective, at low cost.
Description
Technical field
The present invention relates to Support of Foundation Pit Excavation method in construction, foundation pit of specifically a kind of slope in conjunction with tubular pole is opened
Dig method for protecting support.
Background technique
It is well known that often meeting deep basal pit basis in earth work, how guaranteeing that the earthwork is smoothly excavated, base area
It surveys data, hydrological geological conditions, ambient enviroment and comprehensively considers duration, safety and cost, generally there is heavy excavation (slope), soil
Nail wall, diaphram wall, steel-pipe pile, steel sheet pile, cast-in-situ bored pile, anchor cable and various support forms combine.For compared with
Deep underground reinforced concrete wall structure (such as whirling well, sedimentation basin), how to carry out safety support is just even more to seem especially
It is important.
Summary of the invention
A kind of Support of Foundation Pit Excavation method that the technical problem to be solved in the present invention is to provide slopes in conjunction with tubular pole, the party
Method earthwork excavated volume is small, and safety coefficient is high, and the construction period is short.
The technical solution used to solve the technical problems of the present invention is that:
A kind of Support of Foundation Pit Excavation method of slope in conjunction with tubular pole, includes the following steps:
A, whole to excavate
According to foundation pit size, mechanical work face is reserved, it is whole by earth excavation certain depth；
B, surveying setting-out
Foundation pit surrounding is released to need to drive piles the line of supporting；
C, it drives piles
According to the unwrapping wire of step B, using hammering method or static pressure method, gradually it is close to squeeze into tubular pole；
D, stake core fills slip casting
Tubular pole, which is squeezed into, to be finished, and the steel reinforcement cage made is put into an in-core, the upper end of steel reinforcement cage is inserted into crown beam, the filling of stake in-core
Concrete；
E, crown beam is constructed
Steel reinforcement cage connect to form entirety with top crown beam, is preced with beam steel bar colligation and form for seal, crown beam concreting；
F, upper wall body structure construction
The construction of upper wall body structure is carried out in crown beam structure；
G, lower section earth excavation
Excavator cooperation suspension bucket is transported earth excavation in foundation pit using crane, and setting sump cooperates pumping equipment row in foundation pit
Water；
H, lower section wall body structure is constructed
Lower section wall body structure is carried out to tie up muscle, upper end and reserved reinforcing bar, which are bound, to be overlapped, and lower end overlap is inserted into certain thickness
Sand in, carry out form for seal, upper wall body structure and crown beam connecting portion template-setup concreting horn mouth pour
It is cut after complete concrete demoulding；
I, step G, H is repeated, the depth of design structure bottom plate is arrived until excavating.
The present invention by adopting the above technical scheme, compared with prior art, beneficial effect is:
1, sloping coefficient reduces, and earth excavation relative quantity is small；
2, for Relative perfusion stake, the duration accelerates, and no drilling slurry retaining wall is environmentally protective；
3, tubular pole has additional supporting waterproof double action, advantageous to underground structure ontology waterproof and resistance lateral pressure；
4, relatively relatively low for cost Relative perfusion stake supporting；
5, reverse construction no longer needs to setting anchor cable and intermediate supports, constructs convenient for earth excavation and structure hoisting；
6, it is built especially suitable for Responses of An Underground Round, crown beam and upper body structure play inner support jointly and reinforce resistance to compression work
With forming entirety with tube pile structure；Crown beam and barrel load suspended tubes stake top portion, without having to worry about differential settlement；
7, fill concrete in tubular pole, similar " concrete filled steel tube ", tubular pole overall stiffness improve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the floor map of the embodiment of the present invention；
Fig. 3 is the A-A view of Fig. 2；
Fig. 4 is the B point enlarged drawing of Fig. 3；
In figure: tubular pole 1；Crown beam 2；Upper wall body structure 3；Stake core 4；Lower wall body structure 5；Second of foundation pit wall 5-1；Third
Secondary foundation pit wall 5-2；4th foundation pit wall 5-3；Bottom plate 6；First time foundation pit 7；Second of foundation pit 8；Third time foundation pit 9；The
Four foundation pits 10；Steel reinforcement cage 11.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Referring to Fig. 1, Fig. 2, a kind of Support of Foundation Pit Excavation method of slope in conjunction with tubular pole carries out as follows:
A, whole to excavate
According to foundation pit size, mechanical work face is reserved, carries out the excavation of first time foundation pit 7, it is whole by earth excavation certain depth,
3 to 5 meters are excavated according to the actual situation, not only can be reduced comprehensive heavy excavation earth moving amount in this way, but also can be reduced a cubic metre of earth lateral pressure；
B, surveying setting-out
The line for the supporting that needs to drive piles is put in the surrounding of first time foundation pit 7；
C, it drives piles
According to the unwrapping wire of step B, using hammering method or static pressure method, gradually it is close to squeeze into a circle PHC tubular pole 1, between PHC tubular pole 1
Clear distance 100mm, PHC tubular pole 1 can be single, can also front and back intersection progress；
D, stake core fills slip casting
PHC tubular pole 1, which is squeezed into, to be finished, and the steel reinforcement cage 11 made is put into a core 4, and the upper surface of steel reinforcement cage 11 is managed higher than PHC
The upper end of the upper surface of stake 1, steel reinforcement cage 11 is inserted into crown beam 2, fill concrete in stake core 4；If groundwater resources are abundant,
High pressure jet grouting is carried out between PHC tubular pole 1, prevents the infiltration of underground water；Otherwise slip casting is not had to；
E, crown beam is constructed
Steel reinforcement cage 11 connect formation entirety, steel reinforcement cage 11 and 2 link enhancement of the crown beam integral rigidity of structure with top crown beam 2；
After the binding of 2 reinforcing bar of crown beam and form for seal, 2 concreting of crown beam；
F, upper wall body structure construction
Continue the normal construction of upper wall body structure 3 in crown beam structure 2, upper wall body structure 3 can root after constructing
Partially or completely backfilling of earthwork is carried out according to actual conditions, it is convenient convenient for mechanical work occupy-place and manual work；
G, lower section earth excavation
According to circumstances, mini-excavator is hung in foundation pit with crane, excavator cooperates suspension bucket to utilize crane by the earthwork in foundation pit
Excavation transports, and setting sump cooperates suction pump in time to exclude rainwater in foundation pit；
H, lower section wall body structure is constructed
Lower section wall body structure 5 is carried out to tie up muscle, upper end and reserved reinforcing bar, which are bound, to be overlapped, and lower end overlap is inserted into certain thickness
Sand in, carry out form for seal, top and 2 connecting portion template-setup concreting horn mouth of crown beam have poured coagulation
It is cut after native demoulding；
I, step G, H is repeated, the depth of design structure bottom plate is arrived until excavating, finally carries out the construction of structure base slab.
The present embodiment from top to bottom successively passes through first time foundation pit 7, second of foundation pit 8, third time foundation pit 9 and the 4th base
The excavation in hole 10, reaches design structure bottom plate 6, after the completion of second of foundation pit 8, carries out the construction of second of foundation pit wall 5-1, the
Three times after the completion of foundation pit 9, the construction of third time foundation pit wall 5-2 is carried out, after the completion of the 4th foundation pit 10, carries out the 4th foundation pit
The construction of wall 5-3 finally carries out the construction of structure base slab 6.When the certain altitude of excavation down, upper end lower part is reserved in
It overlap joint reinforcing bar in sand and connects a batch face work surface and is cleared up, high pressure water flushing can be used.
The foregoing is merely preferably feasible embodiment of the invention, not thereby limiting the scope of the invention,
It is all to change with equivalent structure made by description of the invention and accompanying drawing content, it is intended to be included within the scope of the present invention.
Claims (4)
1. a kind of Support of Foundation Pit Excavation method of slope in conjunction with tubular pole, which comprises the steps of:
A, whole to excavate
According to foundation pit size, mechanical work face is reserved, it is whole by earth excavation certain depth；
B, surveying setting-out
Foundation pit surrounding is released to need to drive piles the line of supporting；
C, it drives piles
According to the unwrapping wire of step B, using hammering method or static pressure method, gradually it is close to squeeze into tubular pole；
D, stake core fills slip casting
Tubular pole, which is squeezed into, to be finished, and the steel reinforcement cage made is put into an in-core, the upper end of steel reinforcement cage is inserted into crown beam, the filling of stake in-core
Concrete；
E, crown beam is constructed
Steel reinforcement cage connect to form entirety with top crown beam, is preced with beam steel bar colligation and form for seal, crown beam concreting；
F, upper wall body structure construction
The construction of upper wall body structure is carried out in crown beam structure；
G, lower section earth excavation
Excavator cooperation suspension bucket is transported earth excavation in foundation pit using crane, and setting sump cooperates pumping equipment row in foundation pit
Water；
H, lower section wall body structure is constructed
Lower section wall body structure is carried out to tie up muscle, upper end and reserved reinforcing bar, which are bound, to be overlapped, and lower end overlap is inserted into certain thickness
Sand in, carry out form for seal, upper wall body structure and crown beam connecting portion template-setup concreting horn mouth pour
It is cut after complete concrete demoulding；
I, step G, H is repeated, the depth of design structure bottom plate is arrived until excavating.
2. Support of Foundation Pit Excavation method of the slope according to claim 1 in conjunction with tubular pole, it is characterised in that: in step A
Cutting depth be 3 to 5 meters.
3. Support of Foundation Pit Excavation method of the slope according to claim 1 in conjunction with tubular pole, it is characterised in that: in step C
Tubular pole between 100 millimeters of clear distance.
4. Support of Foundation Pit Excavation method of the slope according to claim 1 in conjunction with tubular pole, it is characterised in that: tubular pole is
PHC tubular pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302443.9A CN109898515A (en) | 2019-04-16 | 2019-04-16 | Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302443.9A CN109898515A (en) | 2019-04-16 | 2019-04-16 | Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109898515A true CN109898515A (en) | 2019-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910302443.9A Pending CN109898515A (en) | 2019-04-16 | 2019-04-16 | Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663540A (en) * | 2020-06-29 | 2020-09-15 | 河北建设勘察研究院有限公司 | Foundation pit supporting structure and wall formwork integrated construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105033A (en) * | 2007-07-31 | 2008-01-16 | 华丰建设股份有限公司 | Method for supporting and protecting building foundation pit by employing transverse-diaphragm prestressing concrete pipe pile |
| CN101457526A (en) * | 2009-01-07 | 2009-06-17 | 中冶天工建设有限公司 | Circular deep foundation ditch concrete pile arranging support and major structure inversing construction method |
| CN103628487A (en) * | 2013-11-28 | 2014-03-12 | 中冶天工集团有限公司 | Circular deep foundation pit retaining wall reverse construction method |
| CN107034898A (en) * | 2017-06-05 | 2017-08-11 | 上海大学 | A kind of combined type foundation ditch concrete supporting structure |
| CN107558494A (en) * | 2017-10-16 | 2018-01-09 | 西南交通大学 | A kind of Underground Station structure and its method of construction |
-
2019
- 2019-04-16 CN CN201910302443.9A patent/CN109898515A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105033A (en) * | 2007-07-31 | 2008-01-16 | 华丰建设股份有限公司 | Method for supporting and protecting building foundation pit by employing transverse-diaphragm prestressing concrete pipe pile |
| CN101457526A (en) * | 2009-01-07 | 2009-06-17 | 中冶天工建设有限公司 | Circular deep foundation ditch concrete pile arranging support and major structure inversing construction method |
| CN103628487A (en) * | 2013-11-28 | 2014-03-12 | 中冶天工集团有限公司 | Circular deep foundation pit retaining wall reverse construction method |
| CN107034898A (en) * | 2017-06-05 | 2017-08-11 | 上海大学 | A kind of combined type foundation ditch concrete supporting structure |
| CN107558494A (en) * | 2017-10-16 | 2018-01-09 | 西南交通大学 | A kind of Underground Station structure and its method of construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663540A (en) * | 2020-06-29 | 2020-09-15 | 河北建设勘察研究院有限公司 | Foundation pit supporting structure and wall formwork integrated construction method thereof |
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Application publication date: 20190618 |
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