CN100360745C - Construction method for concrete pile - Google Patents
Construction method for concrete pile Download PDFInfo
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- CN100360745C CN100360745C CNB2004101027099A CN200410102709A CN100360745C CN 100360745 C CN100360745 C CN 100360745C CN B2004101027099 A CNB2004101027099 A CN B2004101027099A CN 200410102709 A CN200410102709 A CN 200410102709A CN 100360745 C CN100360745 C CN 100360745C
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 230000002633 protecting effect Effects 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000010412 perfusion Effects 0.000 claims description 5
- 238000010009 beating Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 239000000969 carrier Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- -1 silt Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention aims to provide a construction method of concrete piles. Pile holes are drilled on the retaining wall of a plurality of pile casings which are tightly connected; a plurality of weight droppers are used to effectively reinforce and squeeze foundation soil bodies in the definite depth and range of the bottom ends of the pile holes to form a large compound carrier composed of a plurality of carriers so as to enhance the bearing capability of piles and reduce the length of the piles. The construction method comprises the steps that good foundation soil is selected and used as a pile end bearing stratum; a pile hole with specified depth is formed in preset a pile position, a steel protection casing is arranged in the pile hole, and thus, a construction pile hole of the retaining wall of the pile casing of the first pile is formed; in this way, the operation is repeated until a plurality of construction pile holes of the retaining walls of the pile casings which are tightly connected are formed; a plurality of rammers are simultaneously arranged, and bulk filling material filled in each pile casing is tamped; meanwhile, the bottom end of each pile casing is temped with the same small energy; reinforced bar cages are respectively arranged in the pile casings, and the pile casing is lifted out after being cast with concrete; the concrete is tamped and compacted in a vibrating mode.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the construction technology of stake.
Background technology
One, along with China's development of economic construction, building projects such as bridge, overhead railway, highrise building are more and more, supporting capacity to the ground king-pile requires also more and more higher, and the stake of bearing capacity more than 2000kN at present, general employing increases the stake footpath, increases a long method, improves the bearing capacity of stake with frictional force and the end resistance that adds timber pile, therefore constructional materials consumption is very big, because construction equipment is very expensive, cause construction costs high, and the construction period is longer simultaneously.
Two, in patent No. ZL98101041.5 patent documentation, a kind of construction technology of concrete pile is disclosed---the complex carrier compaction pile, this stake comprises complex carrier and concrete pile body, the characteristics of this technology are the variation of stake itself not to be studied, but pay attention to the maximum optimum reinforcing of the soil body under the stake end compacted, and hit the pile penetration standard by three and form complex carrier effectively, allow upper load effectively by stake and the following complex carrier of stake, be delivered on the better bearing stratum, thereby improved the bearing capacity of stake greatly, therefore had the bearing capacity of single pile height, advantages such as cost economic.But this job practices is as using in building projects such as bridge, overhead railway, highrise building, the one, adopt large diameter casing and large diameter hammer ram, to having relatively high expectations of construction equipment; The 2nd, adopt a clump of piles to bear upper load jointly, but owing to be subjected to the not interactive conditionality of adjacent stake, pile spacing requires can not be too small, so apron piece have to strengthen, thickening, has caused the waste of material virtually, has reduced construction efficiency.
Summary of the invention
The present invention proposes in order to solve the above problems, purpose is to provide a kind of job practices of concrete pile, this job practices adopts a plurality of weights, to the foundation soil body of bottom, a plurality of holes certain depth, scope simultaneously by the stake hole to a plurality of cylinder-wall protectings that closely link to each other, effectively reinforce compacted, the big complex carrier that formation is made of jointly a plurality of carriers, thus the supporting capacity of stake improved, reduce the length of stake, realize the saving of material, the simplification of construction.
To achieve these goals, the job practices of concrete pile of the present invention comprises the steps:
1), select better foundation soil as bearing course at pile end according to geology prospecting report and building upper load;
2) the steel casing according to the stake hole of setting the microscler one-tenth prescribed depth of stake, is placed by the place, predetermined stake position in ground in the stake hole, forms the construction stake hole of the cylinder-wall protecting of first pile; According to the method described above, first casing of second casing next-door neighbour is sink to prescribed depth, forms the construction stake hole of the cylinder-wall protecting of second pile; Carry out aforesaid operations repeatedly, until the construction stake hole of finishing a plurality of cylinder-wall protectings, the stake hole number is generally more than 3, forms the Large Diameter Pile Holes that is closely linked to each other by a plurality of casing outer walls;
3) in the construction stake hole of a plurality of cylinder-wall protectings of above-mentioned formation, place hammer ram simultaneously with the same quantity of casing, simultaneously insert prose style free from parallelism inserts on one side to each casing bottom, on one side by above-mentioned hammer ram, simultaneously the prose style free from parallelism inserts of inserting in above-mentioned each casing is tamped, fill repeatedly and tamp operation according to identical control criterion, the below certain depth in the construction stake hole of each cylinder-wall protecting and the foundation soil body of scope are carried out closely knit reinforcing, until at the common stake end place of the Large Diameter Pile Holes of forming by a plurality of holes, form the compact earth of the optimum of necessary requirement;
4), utilize above-mentioned a plurality of hammer ram simultaneously the little energy that identical energy is carried out in each casing bottom to be rammed by above-mentioned a plurality of casings;
5) by above-mentioned a plurality of casings, descending reinforcing cage in each casing respectively, and in each casing concrete perfusion, gradation proposes above-mentioned a plurality of casing;
6) concrete is carried out vibration compacting.
Best, in the job practices of above-mentioned concrete pile, above-mentioned better foundation soil is meant the intensity and the deformation requirements that can satisfy upper load, can reinforce compacted soil layer simultaneously.
Best, in the job practices of above-mentioned concrete pile, the mode that sinks to of above-mentioned casing is to be undertaken by the mode that the hammering back-pressure follows pipe pore-forming or spiral to draw hole or vibration sinking tube pore-forming.
Best, in the job practices of above-mentioned concrete pile, above-mentioned second closely links to each other with first casing when sinking to according to casing, all closely links to each other the final Large Diameter Pile Holes that is closely linked to each other by a plurality of casing outer walls that forms with other casing until every casing.
Best, in the job practices of above-mentioned concrete pile, the arrangement mode in above-mentioned a plurality of construction stake holes that closely link to each other and concrete quantity, requirement designs according to upper load.
Best, in the job practices of above-mentioned concrete pile, above-mentioned formation is carried out filler and compacting operation according to identical control criterion, be meant the gradation amount of filler in each casing and ram the energy homogeneous and cause, and the receipts that the filler in each casing is rammed hammer control criterion is also all consistent, receive the final filling compacting degree that the hammer control criterion is meant above-mentioned inserts and hit total injection amount control by three, promptly under situation about not feeding intake, heavy and the distance that falls with predetermined hammer, the empty continuously three injection amounts of hitting of making a call to of test hammer ram, wherein previous injection amount greater than after once injection amount, promptly second hit the empty injection amount of beating and hit sky less than first and beat the injection amount, the 3rd hits the empty injection amount of beating hits sky less than second and beats the injection amount, and above-mentioned three hit total injection amount should be less than three design loads of hitting the injection amount.
Best, in the job practices of above-mentioned concrete pile, the below certain depth in above-mentioned construction stake hole to each cylinder-wall protecting and the foundation soil body of scope carry out closely knit reinforcing, carry out simultaneously.
Best, in the job practices of above-mentioned concrete pile, above-mentioned prose style free from parallelism inserts refers to mashed watt of brickbat, harsh concrete, various discarded aggregates, cobble, slag, or the compound of mentioned component.
Best, in the job practices of above-mentioned concrete pile, the above-mentioned little energy that identical energy is carried out in each casing bottom is rammed and is meant, with identical, ram the less energy of ramming when expanding than filler, once ram again having finished the compacted soil body that filler ram to expand in each casing, and this little energy is rammed simultaneously and is carried out.
Best, in the job practices of above-mentioned concrete pile, above-mentionedly concrete carried out vibration compacting be meant, in each casing, finished descending reinforcing cage, concrete perfusion and the operation of proposition casing after, major diameter pile body to being become by a plurality of steel concrete pile body mutual group carries out whole vibration compacting.
The characteristics and the advantage of the concrete pile that forms by above method are:
1. Zhuan bearing capacity height.With respect to general boring or soil digging castinplace pile, because the stake end soil body has been carried out effective filling tamped, formed by tamping inserts, the compacted soil body and influencing the complex carrier that the soil body is formed jointly at the stake end, bearing capacity of pile tip is greatly improved.
2. Zhuan contraction in length.Because general boring or soil digging castinplace pile, its end generally will enter rock or the very high soil layer of cobble equivalent-load power, therefore stake is long very long, and the concrete pile that forms by above method, its end complex carrier can be located at soil layer relatively preferably such as silty clay, silt, sand, can obtain identical supporting capacity, therefore can shorten the length of stake greatly.
3. construction equipment is simple.With respect to the import construction equipment of general large diameter pile, adopt cheap " bottom has the construction equipment of the concrete pile of tamper diffusion head " (patent of invention number: 98101332.5) simply change a social system and to carry out above-mentioned construction.
4. reduce construction costs.Because the length of stake is shorter, construction equipment is cheap, and with respect to general boring or soil digging castinplace pile, when obtaining identical or higher bearing capacity, construction costs can be saved more than 30%.
Description of drawings
Fig. 1 is as the process chart of the job practices of the concrete pile of being made up of 3 piles of one embodiment of the present of invention.
The specific embodiment
As the job practices of the concrete pile of being made up of 3 piles of one embodiment of the present of invention, it comprises the steps, at first, as shown in Figure 1a, according to geology prospecting report and building upper load, select better foundation soil as bearing course at pile end, carrying out pore-forming behind the selected stake position on the ground; Then, shown in Fig. 1 b, pore-forming is placed steel casing 1 in the stake hole to projected depth, form the construction stake hole of the cylinder-wall protecting of first pile; Then, shown in Fig. 1 c, according to the method described above, first casing of second casing, 1 next-door neighbour is sink to prescribed depth, forms the construction stake hole of the cylinder-wall protecting of second pile; Afterwards, shown in Fig. 1 d, proceed aforesaid operations, finish the construction stake hole of the 3rd cylinder-wall protecting; Then, shown in Fig. 1 e, by casing 1, simultaneously insert prose style free from parallelism inserts 3 on one side to 3 casing bottoms, on one side by 3 hammer rams 2, the prose style free from parallelism inserts of inserting in each casing 3 is tamped, and to the bottom of each casing 1, promptly the foundation soil body of certain depth, scope carries out closely knit reinforcing under the stake end; Then, shown in Fig. 1 f, carry out this filling and compacting operation repeatedly, satisfy the supporting body of necessary requirement until formation, that this supporting body closely links to each other by 3, respectively by the prose style free from parallelism inserts 3 of compacting, the compacted soil body 4 and influence the soil body 5 and constitute jointly; Afterwards, shown in Fig. 1 g,, utilize 3 hammer rams 2 simultaneously the little energy that identical energy is carried out in each casing 1 bottom to be rammed by above-mentioned casing 1; Then, shown in Fig. 1 i, descending reinforcing cage 6 in each casing respectively, and in each casing concrete perfusion 7; Then, shown in Fig. 1 j, above-mentioned 3 casings 1 are proposed simultaneously; At last, shown in Fig. 1 k, the major diameter pile body 7 to being become by 3 steel concrete pile body mutual group carries out whole vibration compacting, finally forms concrete pile.
Claims (10)
1, a kind of job practices of concrete pile, this method comprises the steps:
1), select better foundation soil as bearing course at pile end according to geology prospecting report and building upper load;
2) the steel casing according to the stake hole of setting the microscler one-tenth prescribed depth of stake, is placed by the place, predetermined stake position in ground in the stake hole, forms the construction stake hole of the cylinder-wall protecting of first pile; According to the method described above, first casing of second casing next-door neighbour is sink to prescribed depth, forms the construction stake hole of the cylinder-wall protecting of second pile; Carry out aforesaid operations repeatedly, until the construction stake hole of finishing a plurality of cylinder-wall protectings, the stake hole number is generally more than 3, forms the Large Diameter Pile Holes that is closely linked to each other by a plurality of casing outer walls;
3) in the construction stake hole of a plurality of cylinder-wall protectings of above-mentioned formation, place hammer ram simultaneously with the same quantity of casing, simultaneously insert prose style free from parallelism inserts on one side to each casing bottom, on one side by above-mentioned hammer ram, simultaneously the prose style free from parallelism inserts of inserting in above-mentioned each casing is tamped, fill repeatedly and tamp operation according to identical control criterion, the below certain depth in the construction stake hole of each cylinder-wall protecting and the foundation soil body of scope are carried out closely knit reinforcing, until at the common stake end place of the Large Diameter Pile Holes of forming by a plurality of holes, form the compact earth of the optimum of necessary requirement;
4), utilize above-mentioned a plurality of hammer ram simultaneously the little energy that identical energy is carried out in each casing bottom to be rammed by above-mentioned a plurality of casings;
5) by above-mentioned a plurality of casings, descending reinforcing cage in each casing respectively, and in each casing concrete perfusion, gradation proposes above-mentioned a plurality of casing;
6) concrete is carried out vibration compacting.
2, the job practices of concrete pile according to claim 1 is characterized in that above-mentioned steps 1) in, better foundation soil is meant the intensity and the deformation requirements that can satisfy upper load, can reinforce compacted soil layer simultaneously.
3, the job practices of concrete pile according to claim 1 is characterized in that above-mentioned steps 2) in, the mode that sinks to of above-mentioned casing is to be undertaken by the mode that the hammering back-pressure follows pipe pore-forming or spiral to draw hole or vibration sinking tube pore-forming.
4, job practices according to claim 1, it is characterized in that above-mentioned steps 2) in, closely link to each other with first casing when above-mentioned second casing sinks to, all closely link to each other, the final Large Diameter Pile Holes that closely links to each other by a plurality of casing outer walls that forms with other casing until every casing.
5, job practices according to claim 1 is characterized in that above-mentioned steps 2) in, the arrangement mode in above-mentioned a plurality of construction stake holes that closely link to each other and concrete quantity, requirement designs according to upper load.
6, job practices according to claim 1, it is characterized in that above-mentioned steps 3) in, above-mentioned formation is carried out filler and compacting operation according to identical control criterion, be meant the gradation amount of filler in each casing and ram the energy homogeneous and cause, and the receipts that the filler in each casing is rammed hammer control criterion is also all consistent, receive the final filling compacting degree that the hammer control criterion is meant above-mentioned inserts and hit total injection amount control by three, promptly under situation about not feeding intake, heavy and the distance that falls with predetermined hammer, the empty continuously three injection amounts of hitting of making a call to of test hammer ram, wherein previous injection amount greater than after once injection amount, promptly second hit the empty injection amount of beating and hit sky less than first and beat the injection amount, the 3rd hits the empty injection amount of beating hits sky less than second and beats the injection amount, and above-mentioned three hit total injection amount should be less than three design loads of hitting the injection amount.
7, job practices according to claim 1 is characterized in that above-mentioned steps 3) in, the below certain depth in above-mentioned construction stake hole to each cylinder-wall protecting and the foundation soil body of scope carry out closely knit reinforcing, carry out simultaneously.
8, job practices according to claim 1 is characterized in that above-mentioned steps 3) in, above-mentioned prose style free from parallelism inserts refers to mashed watt of brickbat, harsh concrete, various discarded aggregates, cobble, slag, or the compound of mentioned component.
9, job practices according to claim 1, it is characterized in that above-mentioned steps 4) in, the above-mentioned little energy that identical energy is carried out in each casing bottom is rammed and is meant, with identical, ram the less energy of ramming when expanding than filler, once ram again having finished the compacted soil body that filler ram to expand in each casing, and this little energy is rammed simultaneously and is carried out.
10, job practices according to claim 1, it is characterized in that above-mentioned steps 6) in, above-mentionedly concrete is carried out vibration compacting be meant, after in each casing, having finished descending reinforcing cage, concrete perfusion and the operation of proposition casing, major diameter pile body to being become by a plurality of steel concrete pile body mutual group carries out whole vibration compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101027099A CN100360745C (en) | 2004-12-28 | 2004-12-28 | Construction method for concrete pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101027099A CN100360745C (en) | 2004-12-28 | 2004-12-28 | Construction method for concrete pile |
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| CN1621625A CN1621625A (en) | 2005-06-01 |
| CN100360745C true CN100360745C (en) | 2008-01-09 |
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| CNB2004101027099A Active CN100360745C (en) | 2004-12-28 | 2004-12-28 | Construction method for concrete pile |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103410142B (en) * | 2013-08-09 | 2015-09-30 | 武汉中力岩土工程有限公司 | A kind of construction method of punching bottom-enlarging filling pile and expansion end device |
| CN112593549B (en) * | 2020-04-20 | 2022-05-27 | 武汉砼源高新科技有限公司 | Carrier pile construction process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181174A (en) * | 1985-10-03 | 1987-04-15 | Yitshaq Lipsker | A pile and method of installation thereof |
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1191257A (en) * | 1998-03-20 | 1998-08-26 | 王继忠 | Method for construction of concrete pile |
| JP2000080646A (en) * | 1998-09-03 | 2000-03-21 | Kajima Corp | Interlocking cast-in-place pile |
| CN1354307A (en) * | 2001-12-28 | 2002-06-19 | 王继忠 | Construction method of concrete pile |
| CN1515755A (en) * | 2003-01-10 | 2004-07-28 | 蔡鹏程 | Interpile concrete shell combination slope protection pile |
-
2004
- 2004-12-28 CN CNB2004101027099A patent/CN100360745C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181174A (en) * | 1985-10-03 | 1987-04-15 | Yitshaq Lipsker | A pile and method of installation thereof |
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1191257A (en) * | 1998-03-20 | 1998-08-26 | 王继忠 | Method for construction of concrete pile |
| JP2000080646A (en) * | 1998-09-03 | 2000-03-21 | Kajima Corp | Interlocking cast-in-place pile |
| CN1354307A (en) * | 2001-12-28 | 2002-06-19 | 王继忠 | Construction method of concrete pile |
| CN1515755A (en) * | 2003-01-10 | 2004-07-28 | 蔡鹏程 | Interpile concrete shell combination slope protection pile |
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| CN1621625A (en) | 2005-06-01 |
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Assignee: BEIJING PUISSANT GEOTECHNICAL ENGINEERING CO., LTD. Assignor: Wang Jizhong Contract record no.: 2011110000108 Denomination of invention: Concrete pile construction method Granted publication date: 20080109 License type: Exclusive License Open date: 20050601 Record date: 20110718 |
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Owner name: BEIJING PUISSANT GEOTECHNICAL ENGINEERING CO., LTD Free format text: FORMER OWNER: WANG JIZHONG Effective date: 20150104 |
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Effective date of registration: 20150104 Address after: 102218, Beijing, Changping District East small town Taiping homes, building 31 Patentee after: BEIJING PUISSANT GEOTECHNICAL ENGINEERING CO., LTD. Address before: 102218, Beijing, Changping District East small town Taiping homes, building 31 Patentee before: Wang Jizhong |