CN103215963A - Pile or pile group structure - Google Patents
Pile or pile group structure Download PDFInfo
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- CN103215963A CN103215963A CN2013101609328A CN201310160932A CN103215963A CN 103215963 A CN103215963 A CN 103215963A CN 2013101609328 A CN2013101609328 A CN 2013101609328A CN 201310160932 A CN201310160932 A CN 201310160932A CN 103215963 A CN103215963 A CN 103215963A
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- pile
- stake
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- auxiliary pile
- pegs
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Abstract
The invention discloses a pile or pile group structure. The scheme of densely arranging pile groups is achieved by changing pile center distances, connection density between a pile and soil is enhanced, connection strength between a building and land is enhanced, stability of the building is increased, and good social benefits are achieved.
Description
Technical field
The present invention relates to a kind of stake or pile group structure, particularly a kind of densely covered stake or pile group structure.
Background technology
Certain incident of falling the building, it is former that to have reduced native shear strength be the raining path and sliding that popular people experience because rain, the soil shear resistance descends, and soil has increased weight because of suction, cause this accident, disclose pile tube and exist with the building bonding strength lowly, anti-side ability and pile group structure still can reasonable improved problems;
High-rise basis often requires every square meter bearing capacity greater than 200KPA, buried depth is greater than 1/20 ~ 1/18 of depth of building, topple preventing, at highrise building therefore multi-storey basement often is set, in the Foundation Design only the soil excavation cost promptly surpass 100 yuan every cubic metre, also have problems such as bracing of foundation pit, muck haulage, a large amount of muck haulage also often cause airborne dust, too much or the like the problem of dregs car in the road traffic;
Large span basement often floor is very thick, and cost is very high, and only pile foundation and basement floor cost sum and often have the not easy working problem of anti-floating stake when the Soft Soil Area greater than 1000 yuan of every square meters usually;
The tube pile driving construction often needs complicated special operation machinery, and need the working measure of high request to guarantee construction quality when immersed tube, concrete perfusion etc., and can produce more construction contaminated wastewater, noise pollution, the normal stake footpath that requires is greater than more than 2 meters.
Summary of the invention
The present invention realizes by the following method:
A kind of stake or pile group structure, getting two stakes in the pile group construction is reference pegs, and the center to center distance of described reference pegs is provided with an auxiliary pile greater than the dress diameter of twice between two reference pegss, and described auxiliary pile is vertical or oblique being pressed into; When auxiliary pile is vertical and the reference pegs spacing less than 1.5 times of reference pegss the stake diameter, when auxiliary pile was oblique, auxiliary pile was connected with reference pegs/anchoring, auxiliary pile is characterized as castinplace pile or yi word pattern stake;
Need satisfy following requirement during the oblique connection reference pegs of auxiliary pile: 1 bonding strength satisfies force request, and 2 auxiliary piles have the bearing capacity of opposing soil pressure or auxiliary pile and native contact portion cushion course is set;
Auxiliary pile anchors into the basis and requires same reference pegs.
As further innovation of the present invention, described reference pegs is a preformed pile.
As further innovation of the present invention, adopt the pre-stressed joint of prestressing force between described reference pegs and the auxiliary pile.
Beneficial effect of the present invention is:
By the high density pile group, utilize the overturning or slip resistance analysis of inter-pile soil weight, realized combining closely of stake soil, improved stake skirt effect, improve the supporting capacity of basic every square meter, guaranteed the firm of building.
Description of drawings
Fig. 1 is the vertical pile group structure of gathering of inserting.
Fig. 2 is the densely covered pile group structure of oblique insertion.
Among the figure: 1, reference pegs; 2, auxiliary pile; 3, basic raft plate.
The specific embodiment
As shown in Figure 1, interior at first on construction ground is the unit with the circle, 4 castinplace piles of equidistant jumping pile driving construction are reference pegs on the border of circle, 4 non-soil compaction stakes are set subsequently as auxiliary pile between 4 reference pegss at circular boundary, spacing between the spacing of wherein the constructing reference pegs is got 3 times stake diameter as stake heart distance, and the position is provided with auxiliary pile therebetween, by as above scheme, the effectively connective stability of the building that increases, and the connective stability of soil and pile body.
As shown in Figure 2, choosing heart and apart from a stake diameter that is 3 times two foundation piles are set, is benchmark in the middle branch with two pile foundation stakes subsequently, about each oblique punching and two castinplace piles are set, and be anchored with reference pegs, simultaneously basic raft plate be set in the above and be connected with described 4 piles.
Invention simultaneously also can be used for forming the tube stake by surrounding, and the length of stake can be adjusted.In the soil layer 80% soil property be intensity the construction section stake is long after during greater than 100kpa can not limit, when 50% soil property intensity was less than 100kpa in the soil layer, two of construction sections were long long less than one of construction section.The tube stake of can constructing of the job practices of only existing stake is widely used;
The present invention simultaneously proposes little spacing pile group, can increase the anti-shearing force of stake, and side stretches stake or pile group avoids the stake formula of breaking up one by one to destroy, and can be used for reducing low chamber cost;
Whole destruction is former in the wide interior maximum shear stress 1800KN of 2.5 rice and flour, greater than the wide interior ultimate bearing capacity 1600KN that irritates core pile tube (being 3 ~ 8 average 5 in per according to observations 2.5 meters) of 2.5 rice and flour;
One of local failure reason is at least 540kn greater than the shearing resistance of using pile tube in fact (shear Design value 200KN behind the filling core for the mound shearing force to the single pile shearing force, the about 320KN of limiting value), because of local failure, thereby cause the entire building stake to be broken up one by one successively, the entire building destruction of toppling;
As adopting efficiently low cost solution shearing resistance problem of the present invention, entire building only need increase by 40 2 meters long diameter 600 auxiliary piles and can address the above problem;
As 10 meters of certain anti-floating water levels, structural span is 15 meters, 10 layers, and basement building area 20,000 square meters, overall floorage 120,000 square meters building, thickness of soft soil is greater than 10 meters, and conventional uplift pile constructional difficulties is if adopt conventional pile foundation, only base plate is thick 1.2 meters, the every square meter of reinforcing bar is 150 kilograms, and the basement construction cost per square meter is 1460 yuan, through adopting job practices of the present invention and side extension type stake/pile group, in the post net, as shown in the figure, the stake side is stretched out lateral elements, and side is stretched 5 meters of distances, basement bottom board thickness is 0.6 meter, the every square meter of reinforcing bar is 60 kilograms, and the basement construction cost per square meter is 540 yuan, and total cost is saved 9,200,000 yuan.
Claims (3)
1. stake or pile group structure, it is characterized in that: getting two stakes in the pile group construction is reference pegs, and the center to center distance of described reference pegs is provided with an auxiliary pile greater than the dress diameter of twice between two reference pegss, and described auxiliary pile is vertical or oblique being pressed into; When auxiliary pile is vertical and the reference pegs spacing less than 1.5 times of reference pegss the stake diameter, when auxiliary pile was oblique, auxiliary pile was connected with reference pegs/anchoring, auxiliary pile is characterized as castinplace pile or yi word pattern stake;
Need satisfy following requirement during the oblique connection reference pegs of auxiliary pile: 1 bonding strength satisfies force request, and 2 auxiliary piles have the bearing capacity of opposing soil pressure or auxiliary pile and native contact portion cushion course is set;
Auxiliary pile anchors into the basis and requires same reference pegs.
2. a kind of stake as claimed in claim 1 or pile group structure, it is characterized in that: described reference pegs is a preformed pile.
3. a kind of stake as claimed in claim 1 or pile group structure is characterized in that: adopt the pre-stressed joint of prestressing force between described reference pegs and the auxiliary pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101609328A CN103215963A (en) | 2013-05-06 | 2013-05-06 | Pile or pile group structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101609328A CN103215963A (en) | 2013-05-06 | 2013-05-06 | Pile or pile group structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103215963A true CN103215963A (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101609328A Pending CN103215963A (en) | 2013-05-06 | 2013-05-06 | Pile or pile group structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103215963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615009A (en) * | 2013-11-26 | 2014-03-05 | 中冶天工集团有限公司 | Method for excavating soil between piles of CFG pile composite foundation |
| CN104821118A (en) * | 2015-06-03 | 2015-08-05 | 国网冀北电力有限公司唐山供电公司 | Teaching and training method for using of theodolite, and specialized theodolite stake |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201172810Y (en) * | 2008-03-28 | 2008-12-31 | 中交第一航务工程勘察设计院有限公司 | Separate unloading type sheet pile bulkhead structure |
| CN201351279Y (en) * | 2009-01-07 | 2009-11-25 | 中冶天工建设有限公司 | Circular deep foundation pit support |
| JP2011196173A (en) * | 2010-02-26 | 2011-10-06 | Univ Of Tokyo | Pile arranging method and foundation structure |
| CN102444142A (en) * | 2011-09-20 | 2012-05-09 | 新世纪建设集团有限公司 | Pile group column replacement expanded basement and construction method of same |
-
2013
- 2013-05-06 CN CN2013101609328A patent/CN103215963A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201172810Y (en) * | 2008-03-28 | 2008-12-31 | 中交第一航务工程勘察设计院有限公司 | Separate unloading type sheet pile bulkhead structure |
| CN201351279Y (en) * | 2009-01-07 | 2009-11-25 | 中冶天工建设有限公司 | Circular deep foundation pit support |
| JP2011196173A (en) * | 2010-02-26 | 2011-10-06 | Univ Of Tokyo | Pile arranging method and foundation structure |
| CN102444142A (en) * | 2011-09-20 | 2012-05-09 | 新世纪建设集团有限公司 | Pile group column replacement expanded basement and construction method of same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615009A (en) * | 2013-11-26 | 2014-03-05 | 中冶天工集团有限公司 | Method for excavating soil between piles of CFG pile composite foundation |
| CN104821118A (en) * | 2015-06-03 | 2015-08-05 | 国网冀北电力有限公司唐山供电公司 | Teaching and training method for using of theodolite, and specialized theodolite stake |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |