CN106284364A - A kind of building foundation pit quaternity abnormity interlocking pile supporting construction - Google Patents
A kind of building foundation pit quaternity abnormity interlocking pile supporting construction Download PDFInfo
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- CN106284364A CN106284364A CN201510271161.9A CN201510271161A CN106284364A CN 106284364 A CN106284364 A CN 106284364A CN 201510271161 A CN201510271161 A CN 201510271161A CN 106284364 A CN106284364 A CN 106284364A
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- foundation pit
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Abstract
A kind of building foundation pit quaternity abnormity interlocking pile supporting construction, it is characterized in that, connection between at the bottom of the cylindric water-stop curtain being mutually twisted arrangement and foundation ditch by the cement earth pillar of stabilization zone of breaking ground carries, it it is the cement earth pillar being engaged overlap joint with the two, in the cement earth pillar connecting band, it is occluding with deformed bar concrete support stake, forms by water-stop curtain, connect band, abnormity occlusion support pile and the end, hole by four foundation pit supporting constructions being closely connected of stabilization zone of breaking ground.Compared with prior art, having following remarkable advantage: the rolled steel dosage of use reduces 20-30%, cost reduces 20-25%, mud-less pollution in construction, pattern foundation pit supporting structure rigidity, anti-thrust are higher, and foundation pit deformation is less, safer, are particularly suited for the supporting of soft clay area one double storey basement.
Description
Technical field
The present invention relates to building field, particularly relate to a kind of building foundation pit quaternity abnormity interlocking pile supporting construction.
Background technology
" a kind of deformed bar concrete and the soil cement march-past pattern foundation pit supporting structure wall " of one of the present inventor invention
(ZL201320319708.9) finding in the application project of soft clay area, the more existing circle commonly used of this braced wall cuts
Face cast-in-situ bored pile supporting construction, saves reinforcing bar 30%, saves concrete 20-25%.But also there will be foundation pit deformation amount mistake
Greatly, warning limit is even more than deformed.Trace it to its cause, be relevant with existing design of foundation pit specification, country of China industry
Foundation Pit Support Design specification specifies, in soft clay area, foundation pit supporting construction possesses three elements: support pile, water-stop curtain and
Broken ground at the bottom of foundation ditch reinforcing, the thrust of the former anti-hole wall soil, water penetration outside the anti-hole of middle person, grand on the subsoil of the latter anti-hole,
Three respectively executes its duty, adjacent and be not attached to, and there are tens to tens centimeters of thick muddy soft soils between them.
It is known that the foundation ditch in weak soil is the most necessarily eager to excel supports weak stake, support pile periphery is mud, muddy soft soil
Or soil cement, support pile is anti-to be pushed away ability and makes a world of difference, mud, the earth bearing strength 4-6T/m of muddy soft soil2, and soil cement
Comprcssive strength is 0.6-1MPa, i.e. 60-100T/m2, intensity improves 15 times.Three elements itself are indeformable, but are clipped in
Muddy soft soil between three elements easily deforms, and causes support pile bottom can rely on without support, and three elements " are fought separately ",
" not interfereing with each other ", the anti-thrust of supporting construction cannot improve naturally.
It addition, the interlocking pile used in existing foundation pit supporting project is circular section stake, idiographic flow is: first construction is positioned at base
Limit, hole, the circular section element stake arranged at a certain distance, element stake composition is low-grade concrete or other tabia materials,
After element stake reaches some strength, then between every two plain stakes, construction has several to the 20 centimeters steel overlapped with element stake
Rib concrete pile, after having constructed, what formin stake was mutually twisted with reinforced concrete pile is engaged supporting construction.
Summary of the invention
It is an object of the invention to provide a kind of building foundation pit quaternity abnormity interlocking pile supporting construction, set than existing
By the supporting construction reinforcing three elements composition of being broken ground at the bottom of circular section support pile, water-stop curtain and the foundation ditch counted, not only steel are used
Amount reduces 20-30%, and cost reduces 20-25%, mud-less pollution, and supporting construction is anti-, and to push away ability higher, and foundation ditch is safer.
It is an object of the invention to be achieved through the following technical solutions: a kind of building foundation pit quaternity abnormity occlusion
Stake supporting construction, it is characterised in that at the bottom of the cylindric water-stop curtain being mutually twisted arrangement and foundation ditch by stabilization zone of breaking ground
Cement earth pillar between connection band, be engaged with the two overlap joint cement earth pillar, connect band cement earth pillar in sting
Conjunction has deformed bar concrete support stake, and it is passive to form by water-stop curtain, connection band, abnormity occlusion support pile and the end, hole
Four foundation pit supporting constructions being closely connected of soil stabilization zone.Deformed bar concrete support stake cross section is I-shaped
Shape or T-shaped or rectangle.
The cylindric cement earth pillar being mutually twisted is constructed by one to multiple axle cement-soil mixing pile machine, at the bottom of water-stop curtain and foundation ditch
The cement earth pillar being connected band between stabilization zone by breaking ground, still failed to consolidate, when vibration hammer is by lower end within underground 1-3 day
The rectangular steel pipe of opening shakes in underground layer, will not extrude or destroy soil cement structure, along with the soil extracted in rectangular steel pipe
Body, puts steel reinforcement cage and concrete perfusion, then rectangular steel pipe of extricating oneself from a predicament and brace oneself up to action, just abnormity support pile is engaged with cement earth pillar together with.
Reach water-stop curtain, connect four, stabilization zone of being broken ground at the bottom of band, abnormity support pile and foundation ditch and be connected, more national row
Industry design specification relies only on support pile and resists to cheat wall soil body thrust, many again from water-stop curtain, connect quilt at the bottom of band and foundation ditch
The soil cement Gravity Wall that stabilization zone number meter of breaking ground is thick, foundation ditch is more stable, safety.
Without underground pipe network and building, rectangular steel pipe lower end near cement earth pillar constructs construction supporting stake on the same day, or place
Flap valve can be used to open and Guan Bi, close during sinking, open when above carrying, by the concrete of steel reinforcement cage Yu perfusion.
The construction of a kind of building foundation pit quaternity abnormity interlocking pile supporting construction, comprises the following steps:
1. by the size of design drawing requirement, processing monolayer or double-deck rectangular steel pipe, design I-shaped support pile, outside
Both sides, pipe lower end are welded with the reaming steel wing, design T-shaped support pile, are welded with the reaming steel wing in side, outer tube lower end；
2. cement-soil mixing pile machine, hidden pipe pile machine and rectangular steel pipe are transported to building site assemble；
3. constructed at the bottom of water-stop curtain, foundation ditch by break ground stabilization zone and linking belt therebetween by cement-soil mixing pile machine
Cement earth pillar, each cylindric cement earth pillar mutually overlaps 5-30cm；
4., in 1-3 days of cement earth pillar construction, band is being connected, by hidden pipe pile machine vibration hammer by under monolayer or bilayer
The rectangular steel pipe of end opening shake into, until designed elevation, further take out the soil body in rectangular steel pipe；
5. in rectangular steel pipe, hang steel reinforcement cage, Reperfu-sion concrete, i.e. complete the construction of single support pile, go round and begin again,
Completing the construction of all support piles, the making of the present invention the most just completes.
Single rectangular steel pipe described herein, extracts the soil in rectangular steel pipe, need to separately set soil sampler；Double-deck square described herein
Shape steel pipe, extracts the soil in rectangular steel pipe, it is only necessary to pull out outside proposition trocar sheath by quiet for inner tube, and vibration is imperial removes the soil in inner tube,
When being unable to lift soil in pipe such as inner tube lower ending opening, inner tube lower end sets flap valve and closes native；Described herein in side, outer tube lower end or
Both sides are welded with the reaming steel wing, when being to carry the outer tube edge penetration concrete of rectangle on limit, the reaming steel wing can reaming in soil layer,
Concrete filling is allowed wherein to form T-shaped or I-shaped support pile.
The present invention compared with prior art, has following remarkable advantage: the rolled steel dosage of use reduces 20-30%, cost
Reducing 20-25%, mud-less pollution in construction, foundation pit supporting construction rigidity, anti-thrust are higher, foundation pit deformation amount is less,
Safer, it is suitable for the supporting of soft clay area one double storey basement.
Accompanying drawing explanation
Fig. 1 is a typical cantilever-type pattern foundation pit supporting structure embodiment schematic diagram of the present invention.Wherein stage casing on the left of (a) foundation ditch
Floor map, (b) A-A ' generalized section, (c) I-shaped support pile cross sectional representation.
In figure: 1 miscellaneous fill layer, 2 water-stop curtain cement earth pillars, 3 Guan Liang, 4 connect band cement earth pillar, are broken ground in 5 ends, hole
Stabilization zone cement earth pillar, 6 muds, 7 ground elevations, 8 I-shaped support piles, 9 foundation ditches, absolute altitude at the bottom of 10 foundation ditches, 11
Silt clay, 12 support pile stirrups, the 13 main muscle of support pile.
Detailed description of the invention
One typical cantilever-type pattern foundation pit supporting structure of the present invention implements such as Fig. 1, and its construction procedure is as follows:
Before excavation of foundation pit, cement-soil mixing pile machine is stood on foundation ditch limit miscellaneous fill (1). construction water-stop curtain cement
Earth pillar (2), connecting band cement earth pillar (4), stabilization zone cement earth pillar (5) of being broken ground at the bottom of foundation ditch, they are mutually lapped
10cm.Construction connect band cement earth pillar (4) time, by vibrator sunk pile machine with thereafter, the same day with vibration hammer by bilayer square
Shape steel pipe shakes in mud (6), connection band cement earth pillar (4) and silt clay (11), until designed elevation,
Quiet inner tube of pulling out to outside outer spout, the imperial soil of vibration.Put into the steel reinforcement cage being made up of main muscle (13) and stirrup (12), then
Concrete perfusion in rectangular steel pipe.The outer steel pipe of rectangle is extracted in vibration, is put in outer steel pipe by interior steel pipe, and moves next
The construction of stake position, until completing the construction of all support piles of this foundation ditch (8) and cement earth pillar (2,4,5), in support pile (8)
By prior art construction Guan Liang (3) on top, then the earthwork of excavation pit (9), until absolute altitude at the bottom of foundation ditch (10).
Claims (1)
1. a building foundation pit quaternity abnormity interlocking pile supporting construction, it is characterised in that mutually sting cylindric
Close and carried by the connection between the cement earth pillar of stabilization zone of breaking ground at the bottom of the water-stop curtain and foundation ditch arranged, be to be engaged with the two to take
The cement earth pillar connect, is occluding with deformed bar concrete support stake in the cement earth pillar connecting band, and composition is by sealing curtain
Curtain, connection band, abnormity occlusion support pile and the end, hole, tied by four pattern foundation pit supporting structures being closely connected of stabilization zone of breaking ground
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271161.9A CN106284364A (en) | 2015-05-19 | 2015-05-19 | A kind of building foundation pit quaternity abnormity interlocking pile supporting construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271161.9A CN106284364A (en) | 2015-05-19 | 2015-05-19 | A kind of building foundation pit quaternity abnormity interlocking pile supporting construction |
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| Publication Number | Publication Date |
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| CN106284364A true CN106284364A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510271161.9A Pending CN106284364A (en) | 2015-05-19 | 2015-05-19 | A kind of building foundation pit quaternity abnormity interlocking pile supporting construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409476A (en) * | 2019-07-05 | 2019-11-05 | 中国建筑第八工程局有限公司 | Retaining Structure of Extra-deep Excavation side wall water leakage treatment method |
-
2015
- 2015-05-19 CN CN201510271161.9A patent/CN106284364A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409476A (en) * | 2019-07-05 | 2019-11-05 | 中国建筑第八工程局有限公司 | Retaining Structure of Extra-deep Excavation side wall water leakage treatment method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |