CN1687535A - Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material - Google Patents
Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material Download PDFInfo
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- CN1687535A CN1687535A CN 200510038903 CN200510038903A CN1687535A CN 1687535 A CN1687535 A CN 1687535A CN 200510038903 CN200510038903 CN 200510038903 CN 200510038903 A CN200510038903 A CN 200510038903A CN 1687535 A CN1687535 A CN 1687535A
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Abstract
The present invention discloses a new pile-soil interacting slurry fixing dispersed material pile composite foundation construction method. The present invention forms a pile hole from drill getting into foundation to the designed depth. Around the pile hole it adopts slurry to breast wall. Lay slurry fixing pipe in the pile hole, and put aggregate into the pile hole. Infuse serum into the pile hole from grouting pump through slurry fixing. When the serum and aggregate solidify into pile and inleak into the soil body around the pile. Spread underlay layer on top of the pile to form composite foundation. The present invention solves the disadvantages of present technology comprising flexible and rigidit pile composite foundation method, or the pile body intensity is low, or the cost is high. In the present invention, the serum solidifies into pile together with aggregate the pile hole, inleaks into the soil body, and extends to the three parts (the pile body, the serum infiltrating reinforcing body and the natural soil body) of the slurry grouting pile composite foundation, to achieve the composite effect of improving the foundation carrying capability and reducing the settlement. Besides it can protect environment, decrease building costs and break through the ground space limit.
Description
Technical field
The present invention relates to a kind of composite foundation construction, the interactive slurry bonded dispersed body material pile composite foundation construction of particularly a kind of novel stake soil.
Background technology
Before the present invention, in engineering constructions such as road, bridge, composite foundation construction method is present soft soil foundation class methods commonly used, comprise flexible pile composite foundation method (as broken stone pile, lime soil pile and cement mixing pile etc.) and rigid pile composite foundation method (as the CFG stake, PHC stake and PCC stake etc.).Broken stone pile belongs to the bulk solid stake, and pile strength is low, but cost is relatively low.CFG stake and PHC stake etc. belong to rigid pile, the strength of the mixing pile height, and consolidation effect is good, but the cost height.In actual engineering construction,, generally need the stake type of medium adhesion strength to get final product as composite foundation technology.In addition, traditional pile foundation composite foundation stabilization technology is only brought into play the effect of pile foundation itself, and is very little to its inter-pile soil improvement, and inter-pile soil also can influence the quality of ground stabilization.Simultaneously, along with urban construction and industrial development, industrial refuses such as the big steel slag of building waste and steel mill such as a large amount of discarded fragments of brick, rubble need carry out landfill disposal, and this had both taken valuable and waste has been caused in limited arable land again, have also influenced ecological environment.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned defective, develops a kind of novel interactive slurry bonded dispersed body material pile composite foundation construction of stake soil.
Technical scheme of the present invention is:
A kind of native interactive slurry bonded dispersed body material pile composite foundation construction, rig enters ground to projected depth pile hole, stake hole periphery adopts mud off, its major technique is characterised in that puts into the solid pipe of slurry in the stake hole, drop into aggregate then in the stake hole, by the solid injection slurries of pipe in the stake hole of slurry, the fixed pile afterwards of slurries and aggregate and penetrating in the pile peripheral earth goes by grout pump, lay mattress layer on the stake top, form composite foundation.
Advantage of the present invention and effect be slurry bonded dispersed body material pile composite foundation reinforcement mechanism be slurries except that in the stake hole with the fixed pile of aggregate, also part is infiltrated the soil body, improve the character of all natural soils of stake, so, the composite foundation stabilization district expands to three parts (pile body, slurry infiltration add the solid and the natural soil body) of grouting pile composite foundation by simple two parts of general rigid pile composite foundation (pile body and the natural soil body), reaches better raising bearing capacity of foundation soil and reduces the composite effect of foundation settlement; The present invention is a kind of soft base processing method that slurry injection technique adds bonded dispersed body material of introducing, and expanded diameter is 500～700mm, long the reaching more than the 30m of stake; Material of body of a pile can for refuses such as rubble, fragment of brick or slag as aggregate (discrete material), can effectively protect environment, reduce construction cost; Because the construction machinery height is not high, therefore not limited by site space.
Description of drawings
Fig. 1---structural principle schematic diagram of the present invention.
Fig. 2---stake top vertical view
Fig. 3---enforcement figure of the present invention.
The specific embodiment
Shown in Fig. 1,2 and 3, a kind of novel interactive slurry bonded dispersed body material pile composite foundation construction of stake soil, its construction sequence:
(1) pore-forming.The pore-forming of the solid stake of slurry requires basically identical with the pore forming process of general bored pile.Generally use the rig pore-forming, natural pulping retaining wall under the situation that is difficult for keeping at hole wall, adopts artificial pulping retaining wall.Adopt bentonite to add alkali in engineering is used and carry out artificial pulping retaining wall, the specific gravity control of mud is in certain scope.
(2) lapidation hole flushing.After boring is finished, carry out hole flushing at twice.Hole flushing is for the first time carried out before the input aggregate after boring finishes.Hole flushing for the second time is that aggregate limit hole flushing is thrown on the limit in throwing in the aggregate process, and twice hole flushing finished standard with different mud balance conducts respectively.In throwing in the process of aggregate, cause the hole of collapsing for preventing aggregate collision hole wall, the special use guider that feeds intake is set guides aggregate, its effect is to prevent that other foreign material from falling into boring and aggregate is vertically fallen at the bottom of the hole.
(3) grouting and reinforcing.The slurries parameter mainly comprises the match ratio of slurries, water/binder ratio.The slip casting of the solid stake of slurry at first will make slurries riddle the space of aggregate in the hole, so that fixed pile.Secondly a part of slurries soil body diffusion is towards periphery carried out grouting and reinforcing to pile peripheral earth, improves the intensity of natural ground soil.Can control the slip casting process with grouting amount, and adopt the limit to pull out the method for marginal not slurry.
(4) mattress layer setting.After treating that pile body solidifies, the mattress layer that rubble and geo-grid are formed is set on the stake top, thereby forms the interactive slurry bonded dispersed body material pile composite foundation of stake soil.
Concrete operations are as follows:
Utilize rig according to intended diameter, adopt the mud off resist technology to creep into to projected depth pile hole 1, place the guider of making of steel (plate) 2 that feeds intake in the stake aperture, and then in stake hole 1, put into slurry and manage 3 admittedly, admittedly managing 3 by grout pump 4 to slurry discharges water and cleans a stake hole 1, throw in graded broken stone or aggregates such as fragment of brick or slag 5 then, aggregate can be rubble or fragment of brick or slag or its combination; Admittedly manage 3 with slurry after aggregate 5 is thrown in and finished and inject slurries 6, slurries 6 are cement grouts, and slurries 6 carry out fixed back pile 7 with aggregate 5; Slurries 6 are except that grouting pile-forming in the hole 7, and also the soil body 8 permeates towards periphery; Take out slurry and manage 3 admittedly, treat that stake 7 is solidified after, lay the sand stone layer 9 about about 50 centimetres of thickness on stake 7 tops, put into geo-grid 10 in the sand stone layer 9, form the solid pile composite foundation mattress layer of slurry, constitute a kind of native interactive slurry bonded dispersed body material pile composite foundation.
Protection scope of the present invention is not limited only to the description of present embodiment.
Claims (7)
1. stake soil interactive slurry bonded dispersed body material pile composite foundation construction, rig enters ground to projected depth pile hole, stake hole periphery adopts mud off, it is characterized in that in the stake hole, putting into the solid pipe of slurry, drop into aggregate then in the stake hole, inject slurries by starching solid pipe by grout pump in the stake hole, the fixed back of slurries and aggregate pile and penetrating in the soil body goes, lay mattress layer on the stake top, form composite foundation.
2. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 1 is characterized in that aggregate can be rubble or fragment of brick or slag or its combination.
3. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 1 is characterized in that being provided with in the stake aperture guider that feeds intake.
4. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 3, the guider that it is characterized in that feeding intake is made by steel plate.
5. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 1 is characterized in that drop into aggregate in the stake hole before, discharged water and cleaned a stake hole by starching solid pipe by grout pump.
6. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 1 is characterized in that slurries are cement grouts.
7. a kind of native interactive slurry bonded dispersed body material pile composite foundation construction according to claim 1 is characterized in that mattress layer is a sand stone layer, puts into geo-grid in the sand stone layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510038903XA CN100355991C (en) | 2005-04-18 | 2005-04-18 | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510038903XA CN100355991C (en) | 2005-04-18 | 2005-04-18 | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material |
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| Publication Number | Publication Date |
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| CN1687535A true CN1687535A (en) | 2005-10-26 |
| CN100355991C CN100355991C (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200510038903XA Active CN100355991C (en) | 2005-04-18 | 2005-04-18 | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892665A (en) * | 2010-07-27 | 2010-11-24 | 中冶沈勘工程技术有限公司 | Construction method for grouting and vibro-replacement stone pile composite foundation |
| CN102493470A (en) * | 2011-11-16 | 2012-06-13 | 中铁三局集团有限公司 | Foundation treatment method for simulating rigidly enlarged foundation |
| CN102505684A (en) * | 2011-11-02 | 2012-06-20 | 河海大学 | Hollow stiffness-core slurry-solidified discrete material pile and construction method thereof |
| CN106007503A (en) * | 2016-05-20 | 2016-10-12 | 化学工业岩土工程有限公司 | Method for constructing construction waste pile |
| CN108797578A (en) * | 2018-07-12 | 2018-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Crushed stone grouting pile and its construction method with classification enlarged footing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121973A (en) * | 1994-05-13 | 1996-05-08 | 顾叙根 | Double compounded crushed stone pile and concrete cast-in-place pile foundation and its construction method |
| CN1066511C (en) * | 1995-08-30 | 2001-05-30 | 张作瑂 | After-grouting pile composite foundation and construction method thereof |
| CN1087051C (en) * | 1998-04-28 | 2002-07-03 | 徐松 | Technology for constructing foundation of artificially composite ground piles |
| CN1158434C (en) * | 2002-01-14 | 2004-07-21 | 河海大学 | Soft foundation composite ground base construction method for field pouring pipe pile with large diameter |
| CN1195130C (en) * | 2002-09-10 | 2005-03-30 | 周同和 | Sand concrete free small pile foundation consolidation process by stone throwing and squeezing |
-
2005
- 2005-04-18 CN CNB200510038903XA patent/CN100355991C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892665A (en) * | 2010-07-27 | 2010-11-24 | 中冶沈勘工程技术有限公司 | Construction method for grouting and vibro-replacement stone pile composite foundation |
| CN102505684A (en) * | 2011-11-02 | 2012-06-20 | 河海大学 | Hollow stiffness-core slurry-solidified discrete material pile and construction method thereof |
| CN102505684B (en) * | 2011-11-02 | 2014-09-10 | 河海大学 | Hollow stiffness-core slurry-solidified discrete material pile and construction method thereof |
| CN102493470A (en) * | 2011-11-16 | 2012-06-13 | 中铁三局集团有限公司 | Foundation treatment method for simulating rigidly enlarged foundation |
| CN106007503A (en) * | 2016-05-20 | 2016-10-12 | 化学工业岩土工程有限公司 | Method for constructing construction waste pile |
| CN108797578A (en) * | 2018-07-12 | 2018-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Crushed stone grouting pile and its construction method with classification enlarged footing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100355991C (en) | 2007-12-19 |
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