CN102966096B - Construction method for double pile casings of large-diameter cast-in-situ bored pile - Google Patents
Construction method for double pile casings of large-diameter cast-in-situ bored pile Download PDFInfo
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- CN102966096B CN102966096B CN201210507258.1A CN201210507258A CN102966096B CN 102966096 B CN102966096 B CN 102966096B CN 201210507258 A CN201210507258 A CN 201210507258A CN 102966096 B CN102966096 B CN 102966096B
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- 238000010276 construction Methods 0.000 title claims abstract description 53
- 238000011065 in-situ storage Methods 0.000 title abstract 11
- 241000209094 Oryza Species 0.000 claims description 13
- 235000007164 Oryza sativa Nutrition 0.000 claims description 13
- 235000009566 rice Nutrition 0.000 claims description 13
- 239000000284 extract Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000010412 perfusion Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
The invention relates to a construction method for double pile casings of a large-diameter cast-in-situ bored pile, and belongs to the technical field of construction of cast-in-situ piles. The construction method comprises the following construction processes: 1, mounting the outer pile casing of the cast-in-situ pile, namely making the outer pile casing and mounting the outer pile casing in place; 2, mounting the inner pile casing of the cast-in-situ pile, namely making the inner pile casing and mounting the inner pile casing at the top end of the outer pile casing; 3, refilling, namely refilling a gap between the inner pile casing and the outer pile casing to prevent the inner pile casing from being shifted in the boring process and concrete from entering into the gap in the cast-in-situ process; 4, constructing the cast-in-situ bored pile, namely after mounting the inner pile casing and the outer pile casing, constructing the cast-in-situ bored pile in a conventional way; 5, pulling out the inner pile casing, namely after pouring the concrete into the cast-in-situ bored pile, pulling out the inner pile casing before initial setting; and 6, pulling out the outer pile casing, namely pulling out the outer pile casing when the concrete strength of the cast-in-situ pile reaches 75% of the designed strength, so as to finish the construction process of the large-diameter cast-in-situ bored pile. The construction method has the advantages of simple process, convenience in construction, safety, reliability, stable quality, capability of effectively saving the cost, high production efficiency, and the like.
Description
Technical field
The invention belongs to filling pile construction technical field, particularly relate to the two casing construction method of a kind of large diameter bored pile, be mainly applicable to weak stream and mould large diameter bored pile construction on shape soil layer.
Background technology
At present, harbour, coastal area, highway bridge construction demand increase day by day, and the basis of this kind of engineering adopts large diameter bored pile technique to construct usually.This type of engineering of coastal area can run into the silt soil strata moulding shape high-compressibility in stream usually.Existing large diameter bored pile construction method, for preventing boring from moulding shape soil layer through weak stream, causing the diseases such as the hole that collapses, necking down, pile foundation displacement, usually adopting the construction of long casing method.Long casing construction method steel using amount is large, and construction cost is high.Correlation technique of the present invention, makes long casing become the material that can have enough to meet the need recycling, effectively reduces the construction cost of such engineering.
Summary of the invention
The present invention provides a kind of large diameter bored pile two casing construction method for solving in known technology the technical problem that exists.
The object of this invention is to provide a kind of technique simple, easy construction, safe and reliable, steady quality, significantly reduces costs, applied widely, the two casing construction method of large diameter bored pile of production efficiency high.
The technical scheme that the two casing construction method of large diameter bored pile of the present invention is taked is:
The two casing construction method of a kind of large diameter bored pile, is characterized in that: castinplace pile adopts two casing construction, comprises following work progress:
1) the outer casing of castinplace pile is set: make outer casing, and set in place by outer casing;
2) casing in castinplace pile is installed: casing in making, and interior casing is arranged on outer casing top;
3) backfill: the space in backfill between casing and outer casing, when preventing from holing, when interior casing displacement and perfusion, have concrete to enter space;
4) bored pile construction: after inside and outside casing installation, adopts usual manner to carry out bored pile construction;
5) interior casing is extracted: after drill-pouring pile concreting completes, and extracts interior casing before initial set;
6) outer casing is extracted: when cast-in-place pile concrete intensity reaches 75% of design strength, extracts outer casing, completes large diameter bored pile construction.
The two casing construction method of large diameter bored pile of the present invention can also adopt following technical scheme:
The two casing construction method of described large diameter bored pile, is characterized in: casing in making, its main part external diameter is less than matching used outer casing internal diameter 0.4-0.8 rice.
The two casing construction method of described large diameter bored pile, is characterized in: casing in making, bottom it, 0.6-1.0 rice scope place, arranges two-layer horn mouth.
The two casing construction method of described large diameter bored pile, is characterized in: in making during casing, outside casing, pushes up the welding of downward 0.1-0.3 rice for setting up the limiting plate on casing outside apart from cylinder.
The two casing construction method of described large diameter bored pile, is characterized in: interior casing top exceeds outer casing top 0.1-0.3 rice, and original ground 0.1-0.3 rice is goed deep in bottom.
The two casing construction method of described large diameter bored pile, is characterized in: after interior casing installation, the space in backfill between casing and outer casing, has concrete to enter space when preventing from holing when interior casing displacement and perfusion.
The advantage that the present invention has and good effect are:
The silt soil strata moulding shape high-compressibility in stream carries out large diameter bored pile construction, owing to have employed the brand-new technical scheme of the present invention, significantly reduces measure material usage.Compared with prior art, it is simple that the present invention has technique, and easy construction, safe and reliable, steady quality, significantly reduces costs, applied widely, and production efficiency advantages of higher has saved large diameter bored pile construction cost greatly.
Accompanying drawing explanation
Casing structure schematic diagram in Fig. 1;
The two casing construction method schematic diagram of Fig. 2 large diameter bored pile.
In figure, the outer casing of 1-; Casing in 2-; Casing limiting plate in 3-; Casing stiffening rib in 4-; Fine sand is filled between casing inside and outside 5-; 6-original state ground.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Accompanying drawings 1 and Fig. 2.
Embodiment 1
The two casing construction method of a kind of large diameter bored pile, to mould 1.5 meters of stake footpath pile foundations that the silt soil strata of shape high-compressibility is constructed, its work progress in stream:
The first step, sets outer casing: make the outer casing of steel, selecting the hot-rolled coil of wall thickness 0.01 meter to roll into internal diameter is 1.9 meters, the outer casing of long 20 meters (depending on thickness of soft soil), and utilizes vibrations equipment, sets in place by outer casing;
Second step, casing in installing: make casing in steel, selecting the hot-rolled coil of wall thickness 0.01 meter to roll into internal diameter is 1.53 meters, length 2 meters is (depending on outer casing top and original-pack ground height, interior casing top exceeds outer casing top 0.1-0.3 rice, and original ground 0.1-0.3 rice is goed deep in bottom).In this example, casing top exceeds 0.2 meter, outer casing top, apart from 0.2 meter, top welded limiting plate outside interior casing, for setting up casing outside.Within the scope of 0.6 meter, interior casing bottom, two-layer horn mouth is set;
3rd step, backfill: with the space in fine sand backfill between casing and outer casing, have concrete to enter space when interior casing displacement and perfusion when preventing from holing;
4th step, bored pile construction: after inside and outside casing installation, adopts usual manner to carry out bored pile construction;
5th step, interior casing is extracted: after drill-pouring pile concreting completes, and extracts interior casing before initial set;
6th step, outer casing is extracted: when cast-in-place pile concrete intensity reaches 75% of design strength, extracts outer casing, completes large diameter bored pile construction.
This technique ensure that pile crown concrete perfusion does not directly contact with outer casing, and making not disturbance pile body extract outer casing becomes possibility, has described good effect.
Embodiment 2
Comparative example 1, and after long casing construction method and pile, casing extracts contrast:
Coastal and riverine area, moulds the bored concrete pile foundation on the silt soil strata of shape high-compressibility, long casing mostly need be used to construct in stream, due to features as poor geologic condition, most of the cylinder s buried depth is comparatively large, and material usage is huge.Tian Jinji clears out a harbour three line Grade Separation Projects, and have the pile foundation more than 1,000 of seabeach construction on the ground, the cylinder s buried depth is between 12-26 rice, and steel using amount is huge, and its expense occupies larger proportion in pile foundation construction measure cost.After this project has carried out long casing method construction pile, casing extracts experiment:
Set 1.8 meters, a stake footpath, the experiment stake of long 20 meters of stake.Test pile employ one long be the steel casing of 14 meters, the cylinder s buried depth 12 meters.After experiment stake has been built, before pile foundation concrete initial set, utilize vibration hammer slowly to balance and extracted steel pile casting.
Casing is extracted comparatively smooth, and the casing extracted is intact, can have enough to meet the need use, but larger problem appears in pile foundation quality, is mainly reflected in: disturbance pile concrete and reinforcing cage off normal, pile head sinking are serious.
By analyzing, disturbance pile concrete and reinforcing cage off normal are mainly because concrete not yet reaches initial set, and the concrete holding flow regime is easier to the outer force-disturbance being subject to extracting casing.
Pile head sinking mainly due to, casing diameter is greater than a footpath, mud between casing inwall and pile concrete and slurry coat method layer, when utilizing vibration hammer to extract casing, be pulled out with steel pile casting, with the concrete of consequence flow regime sink to being filled with extract after the space that stays cause pile head sinking 1.5 meters.
During by thinking that should be selected in concrete strength on opportunity that casing is extracted reaches 75% of designing requirement, thus ensure not disturbance pile concrete and do not produce pile head sinking.But when pile foundation intensity reaches 75% of design strength, the concrete of more than ground super filling part will produce huge frictional resistance to steel pile casting, makes casing extract.
Through contrast, adopt the two casing construction method of large diameter bored pile, can ensure the quality of products under stable and the reliable prerequisite of construction safety, extract outer casing, thus reducing the construction costs, object of the present invention obtains realization.
Claims (1)
1. the two casing construction method of large diameter bored pile, is characterized in that: castinplace pile adopts two casing construction, comprises following work progress:
1) the outer casing of castinplace pile is set: make outer casing, and set in place by outer casing;
2) casing in castinplace pile is installed: casing in making, and interior casing is arranged on outer casing top;
3) backfill: the space in backfill between casing and outer casing, when preventing from holing, when interior casing displacement and perfusion, have concrete to enter space;
4) bored pile construction: after inside and outside casing installation, adopts usual manner to carry out bored pile construction;
5) interior casing is extracted: after drill-pouring pile concreting completes, and extracts interior casing before initial set;
6) outer casing is extracted: when cast-in-place pile concrete intensity reaches 75% of design strength, extracts outer casing, completes large diameter bored pile construction;
Casing in making, its main part external diameter is less than matching used outer casing internal diameter 0.4-0.8 rice; Bottom it, 0.6-1.0 rice scope place, arranges two-layer horn mouth; In making during casing, outside casing, push up the welding of downward 0.1-0.3 rice for setting up the limiting plate on casing outside apart from cylinder; Interior casing top exceeds outer casing top 0.1-0.3 rice, and original ground 0.1-0.3 rice is goed deep in bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210507258.1A CN102966096B (en) | 2012-11-30 | 2012-11-30 | Construction method for double pile casings of large-diameter cast-in-situ bored pile |
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| CN201210507258.1A CN102966096B (en) | 2012-11-30 | 2012-11-30 | Construction method for double pile casings of large-diameter cast-in-situ bored pile |
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| CN102966096B true CN102966096B (en) | 2015-07-01 |
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| CN103967032A (en) * | 2014-04-16 | 2014-08-06 | 青岛理工大学 | Double-pile-casing cast-in-situ bored pile for strongly-corrosive saline soil and construction method thereof |
| CN104213555B (en) * | 2014-08-22 | 2017-02-01 | 浙江交工钱潮建设有限公司 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
| CN104358252B (en) * | 2014-10-14 | 2016-01-13 | 杭州江润科技有限公司 | The bored pile perforation structure of spillage and construction method in water prevention |
| CN106149683A (en) * | 2015-04-23 | 2016-11-23 | 五冶集团上海有限公司 | A kind of cast-in-place pile construction method using double casing to pass through deep metalling |
| CN105672255B (en) * | 2016-02-22 | 2018-07-27 | 深圳市工勘岩土集团有限公司 | Control the construction method for double pile casings of verticality |
| CN106088087B (en) * | 2016-08-15 | 2018-07-03 | 中国电建集团华东勘测设计研究院有限公司 | A kind of embedding rock single pile bitubular construction auxiliary device and its construction method |
| CN107646223A (en) * | 2017-09-28 | 2018-02-02 | 新疆农业科学院土壤肥料与农业节水研究所(新疆维吾尔自治区新型肥料研究中心) | A kind of original soil modification method and its device suitable for heavy salinized ground |
| CN107642085B (en) * | 2017-10-20 | 2023-11-21 | 北京京能东方建设工程有限公司 | Pile casing for bored pile and karst cave treatment method |
| CN108755670B (en) * | 2018-07-19 | 2024-01-23 | 中国建筑第八工程局有限公司 | Pile head elevation control and protection device and pile head construction method |
| CN109811764B (en) * | 2019-03-28 | 2024-06-04 | 广东远大路桥科技有限公司 | Recyclable steel pile casing for bored pile construction and construction method |
| CN111021356A (en) * | 2019-12-26 | 2020-04-17 | 上海隧道工程有限公司 | Method and device for recovering steel casing of mudflat pile foundation |
| CN111305209A (en) * | 2020-02-25 | 2020-06-19 | 深圳市工勘岩土集团有限公司 | Sinking method for super-long steel casing of large-diameter super-deep cast-in-place pile |
| CN114232607A (en) * | 2021-11-27 | 2022-03-25 | 中铁二十二局集团第一工程有限公司 | Frozen soil section drilled pile construction process |
| CN114875898A (en) * | 2022-05-29 | 2022-08-09 | 中国五冶集团有限公司 | Construction method for bored cast-in-place pile by rotary excavation of steel long pile casing and arm guard in soft soil layer |
| CN115787633A (en) * | 2022-11-30 | 2023-03-14 | 中恩工程技术有限公司 | A combination formula of putting more energy into steel protects a section of thick bamboo for bored concrete pile construction |
| CN116733048A (en) * | 2023-08-10 | 2023-09-12 | 中建四局建设发展有限公司 | Pile splicing structure of soft soil foundation filling pile and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196004A (en) * | 2007-12-12 | 2008-06-11 | 刘清洁 | Diving casting cast-in-place pile construction method for constructing in scree layer and sand layer |
| JP2011137318A (en) * | 2009-12-28 | 2011-07-14 | Daiho Constr Co Ltd | Construction method and apparatus for cast-in-place pile |
| CN202265822U (en) * | 2011-10-17 | 2012-06-06 | 福建工程学院 | Pile forming device for cast-in-situ concrete thin-wall piles |
-
2012
- 2012-11-30 CN CN201210507258.1A patent/CN102966096B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196004A (en) * | 2007-12-12 | 2008-06-11 | 刘清洁 | Diving casting cast-in-place pile construction method for constructing in scree layer and sand layer |
| JP2011137318A (en) * | 2009-12-28 | 2011-07-14 | Daiho Constr Co Ltd | Construction method and apparatus for cast-in-place pile |
| CN202265822U (en) * | 2011-10-17 | 2012-06-06 | 福建工程学院 | Pile forming device for cast-in-situ concrete thin-wall piles |
Non-Patent Citations (2)
| Title |
|---|
| 双护筒钻进技术在岩溶区桩基施工的应用;于国功;《交通世界》;20100531(第9期);第247-248页 * |
| 木兰溪大桥桩基双层护筒施工技术;刘冬雪;《山西建筑》;20090930;第35卷(第27期);第324-325页 * |
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