CN201660880U - Double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally - Google Patents
Double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally Download PDFInfo
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- CN201660880U CN201660880U CN2009202132866U CN200920213286U CN201660880U CN 201660880 U CN201660880 U CN 201660880U CN 2009202132866 U CN2009202132866 U CN 2009202132866U CN 200920213286 U CN200920213286 U CN 200920213286U CN 201660880 U CN201660880 U CN 201660880U
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- shaft agitation
- agitation pile
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Abstract
A double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally comprises a plurality of double-shaft stirring piles which intersect with each other and form a gravity dam. An earth face and a pit face are provided with double-row double-shaft stirring piles. The central positions of the double-row double-shaft stirring piles at the side of the pit face are provided with the cast-in place piles to improve the rigidity and the shear resistance capability of the gravity dam. The utility model can ensure the deformation control with high requirement of foundation pits and the construction safety of deep foundation pits, effectively improve the application range of the gravity dam in the foundation pits without support and save the envelop enclosure support cost of the foundation pits.
Description
Technical field
The utility model relates to a kind of building field underground exterior-protected structure system, relates in particular to a kind of in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve.
Background technology
Along with all kinds of development and application of going along with sb. to guard him system, the technical application of super large ultra-deep foundation pit is comparative maturity.Especially in center ecumene, the demanding zone of periphery protection; the application that diaphragm wall, SMW (Soil MixingWall colonnade formula soil water mud wall worker method) go along with sb. to guard him worker's method is quite extensive, and this type of technology provides solid foundation for the safety and stability of deep pit digging.Two agitation piles of simple use are early gone along with sb. to guard him system as gravity dam, and its Deformation control can't reach high-level designing requirement.Go along with sb. to guard him the efficient of technology for improving this quasi-tradition of twin shaft agitation pile, adopt the new technology of in agitation pile, overlapping the hole pouring pile of drilling, following 3 benefits are arranged in comparison:
1, simple relatively twin shaft agitation pile is gone along with sb. to guard him and has significantly been improved its rigidity and anti-shear performance;
2, with respect to water-stop curtain+campshed+braced cuts support system, owing to effectively controlled the distortion of gravity dam, can effectively enlarge does not have the scope of application that supports gravity dam, has avoided the setting of supporting, and has saved the support expense;
3, the application in the foundation ditch under 5～6 meters weak soil geology such as wall, SMW worker's method has relatively significantly been saved and has been gone along with sb. to guard him cost.
Such as in the bracing of foundation pit engineering of Hongqiao comprehensive transportation hub subway Hongqiao eastern station, Shanghai, because twin shaft agitation pile gravity dam is gone along with sb. to guard him apart from the 17m only of the secondary bracing of foundation pit diaphragm wall in the foundation ditch, the distortion of gravity dam will produce the secondary dell and relatively seriously influence, so adopted this type of technology.
Therefore, control gravity dam and become more and more important by drill mode that hole pouring pile improves rigidity and anti-shear performance of cover in the twin shaft agitation pile gravity dam that Deformation control is had relatively high expectations is gone along with sb. to guard him.
At present, rigidity preferably the form of going along with sb. to guard him of 5～6 meters deep foundation ditchs mainly contain following two classes:
1, first construction drill perfusion campshed again in the construction diaxon water-stop curtain, compaction grouting in the stake gap adds one support again before the excavation of foundation pit again, and this goes along with sb. to guard him, and the supporting form construction is more loaded down with trivial details, and expense is higher, and the construction period is long.
2, adopt the construction of SMW worker's method, at three agitation pile interpolation shaped steel, the advantage of this technology is that speed of application is fast, the place takies for a short time, but shortcoming is mechanical arrangements to be required high, and also needs to add one support, and financial cost is bigger.
The utility model content
It is a kind of in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve that the utility model provides, can guarantee the high request Deformation control of foundation ditch, guarantees the safety of deep foundation ditch, saves the foundation pit construction cost.
In order to achieve the above object, it is a kind of in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve that the utility model provides, and comprises:
Some twin shaft agitation piles, horizontal vertical being crisscross arranged of described twin shaft agitation pile forms gravity dam;
Double twin shaft agitation pile is set meeting native face and meet pitted surface;
Center position at the double twin shaft agitation pile of meeting pitted surface one side is provided with bored pile, improves the rigidity of meeting the pitted surface gravity dam, and the stake top of this bored pile is provided with fore shaft beam;
In all the other are not provided with the twin shaft agitation pile of bored pile, reinforcing bar or steel pipe or mao bamboon are set, in order to strengthen rigidity;
The stake top of described twin shaft agitation pile is provided with surface layer;
It is consistent with the effective depth of twin shaft agitation pile gravity dam that the cover of bored pile is beaten the degree of depth, and the diameter of bored pile is generally 1.2～1.5 times of twin shaft agitation pile diameter.
The utility model can be guaranteed the high request Deformation control of foundation ditch, guarantees the safety of deep foundation ditch, saves the foundation pit construction cost.
Description of drawings
Fig. 1 be the utility model provide at the drill vertical view of twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve;
Fig. 2 be the utility model provide drill the twin shaft agitation pile space enclosing structure of hole pouring pile at the sectional drawing of A-A direction in internal sleeve.
The specific embodiment
Following according to Fig. 1 and Fig. 2, specify preferred embodiment of the present utility model:
As depicted in figs. 1 and 2, Fig. 1 is at the drill vertical view of twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve, Fig. 2 drills the twin shaft agitation pile space enclosing structure of hole pouring pile at the sectional drawing of A-A direction in internal sleeve, the dam body width 4700mm of gravity dam 11 among the figure, adopt the twin shaft mixing pile construction, stake top is provided with 100mm arrangement of reinforcement pea gravel concreten surface layer 106, and the single pile diameter 700mm of twin shaft agitation pile 101 meets native face and meets pitted surface double twin shaft agitation pile is set.102 diameter 800mm of bored pile that cover is beaten in the agitation pile, be positioned at and meet pitted surface one side, be arranged on the center of double twin shaft agitation pile 101, spacing 2000mm, meet the rigidity of pitted surface gravity dam in order to raising, all the other agitation piles can be taked interpolation reinforcing bar 103, or the mode of steel pipe 104 or mao bamboon 105 is strengthened.The effective length of twin shaft agitation pile 101 and bored pile 102 is 13.2m, and the bored pile top is provided with 850 * 1000 fore shaft beams 107, pours into a mould simultaneously with the gravity dam layer.
Cover is played construction and should be after gravity dam is finished be constructed in 24 hours, adopts castinplace pile to jump during construction as far as possible and plays construction, and adjacent studs is constructed the interval should be greater than two days.
Construction process requirement:
Two mixing pile constructions adopt two sprays, two technologies of stirring, and measure that setting-out, sample groove excavation, centering in place, preparation sinkings, curing compound slurries, whitewashing are for the first time stirred and promoted, repeat to stir, the lifting of whitewashing stirring for the second time, stir again.
The cover hole pouring pile of drilling should adopt the direct circulation construction technology of common filling pile, should enforcement after cover be beaten two mixing pile constructions in zone to finish 24 hours.Adopt GPS series rig original soil pulping, direct circulation pore-forming, rig are holed, play cage, are watered concrete.
Construction quality requires:
Two agitation pile major quality controlling projects
| Sequence number | The control project | Quality requirement |
| 1 | Cement quality | Meet design and code requirement |
| 2 | Volume control | Adhere to specification |
| 3 | Pile strength | Reach designing requirement |
| 4 | Head hoisting velocity (m/min) | Less than 0.5 |
| 5 | Stake end absolute altitude (mm) | ±200 |
| 6 | Stake top mark height (mm) | +100，-50 |
| 7 | Pile position deviation (mm) | ＜50 |
| 8 | The stake footpath | ＜0.04D |
| 9 | Verticality | ≤1.5 |
| 10 | Overlap joint (mm) | ＞200 |
Bored pile construction major quality controlling project
| Sequence number | The control project | Quality requirement |
| 1 | Concrete strength | Meet design requirement |
| 2 | Hole depth (mm) | +300 |
| 3 | Verticality | ＜1％ |
| 4 | Stake footpath (mm) | ±50 |
| 5 | Reinforcing cage fitting depth (mm) | ±100 |
| 6 | Slip casting hole depth deviation | ＜100 |
| 7 | Stake top mark height (mm) | +30，-50 |
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is as the criterion when looking claims person of defining.
Claims (4)
1. one kind in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve, it is characterized in that, comprises:
Some twin shaft agitation piles (101), horizontal vertical being crisscross arranged of described twin shaft agitation pile (101) forms gravity dam (11);
Double twin shaft agitation pile is set meeting native face and meet pitted surface;
Center position at the double twin shaft agitation pile of meeting pitted surface one side is provided with bored pile (102);
It is consistent with the effective depth of twin shaft agitation pile (101) gravity dam that the cover of described bored pile (102) is beaten the degree of depth, and the diameter of bored pile (102) is 1.2～1.5 times of twin shaft agitation pile (101) diameter.
2. as claimed in claim 1 in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve, it is characterized in that the stake top of described bored pile (102) is provided with fore shaft beam (107).
3. as claimed in claim 1 in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve, it is characterized in that, in the twin shaft agitation pile (101) of bored pile is not set, reinforcing bar (103) or steel pipe (104) or mao bamboon (105) are set, in order to strengthen rigidity.
4. as claimed in claim 1 in the drill twin shaft agitation pile space enclosing structure of hole pouring pile of internal sleeve, it is characterized in that the stake top of described twin shaft agitation pile (101) is provided with surface layer (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202132866U CN201660880U (en) | 2009-12-17 | 2009-12-17 | Double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202132866U CN201660880U (en) | 2009-12-17 | 2009-12-17 | Double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660880U true CN201660880U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202132866U Expired - Fee Related CN201660880U (en) | 2009-12-17 | 2009-12-17 | Double-shaft stirring pile envelop enclosure structure with cast-in place piles driven internally |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660880U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268875A (en) * | 2011-01-28 | 2011-12-07 | 中天建设集团有限公司天津分公司 | Foundation pit timbering construction method by overcoring bored piles in two rows of stirring piles |
| CN102704489A (en) * | 2012-05-02 | 2012-10-03 | 广州市鲁班建筑集团有限公司 | Foundation pit support structure and construction method thereof |
| CN103195077A (en) * | 2013-04-02 | 2013-07-10 | 中国水电顾问集团中南勘测设计研究院 | Dam foundation reinforcement frame structure and dam foundation reinforcement method |
| CN108035362A (en) * | 2018-01-15 | 2018-05-15 | 上海建工二建集团有限公司 | Mixing pile inner sleeve beats the foundation pit enclosure structure and construction method of quincunx bored concrete pile |
| CN109778867A (en) * | 2018-12-28 | 2019-05-21 | 上海建工集团股份有限公司 | A kind of self-supporting Composite Enclosure Structure and its construction method |
| CN113389206A (en) * | 2021-07-05 | 2021-09-14 | 中国建筑第八工程局有限公司 | Foundation pit enclosure system and construction method thereof |
-
2009
- 2009-12-17 CN CN2009202132866U patent/CN201660880U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268875A (en) * | 2011-01-28 | 2011-12-07 | 中天建设集团有限公司天津分公司 | Foundation pit timbering construction method by overcoring bored piles in two rows of stirring piles |
| CN102704489A (en) * | 2012-05-02 | 2012-10-03 | 广州市鲁班建筑集团有限公司 | Foundation pit support structure and construction method thereof |
| CN102704489B (en) * | 2012-05-02 | 2015-03-18 | 广州市鲁班建筑集团有限公司 | Foundation pit support structure and construction method thereof |
| CN103195077A (en) * | 2013-04-02 | 2013-07-10 | 中国水电顾问集团中南勘测设计研究院 | Dam foundation reinforcement frame structure and dam foundation reinforcement method |
| CN103195077B (en) * | 2013-04-02 | 2015-09-09 | 中国电建集团中南勘测设计研究院有限公司 | A kind of dam foundation reinforcement frame structure and stabilization of dam foundation method |
| CN108035362A (en) * | 2018-01-15 | 2018-05-15 | 上海建工二建集团有限公司 | Mixing pile inner sleeve beats the foundation pit enclosure structure and construction method of quincunx bored concrete pile |
| CN109778867A (en) * | 2018-12-28 | 2019-05-21 | 上海建工集团股份有限公司 | A kind of self-supporting Composite Enclosure Structure and its construction method |
| CN113389206A (en) * | 2021-07-05 | 2021-09-14 | 中国建筑第八工程局有限公司 | Foundation pit enclosure system and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20171217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |