CN102966096A - 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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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 the filling pile construction technical field, particularly relate to the two casing job practicess of a kind of large diameter bored pile, mainly be applicable to weak stream and mould large diameter bored pile construction on the shape soil layer.
Background technology
At present, harbour, coastal area, highway bridge construction demand increase day by day, and the basis of this class engineering adopts large diameter bored pile technique to construct usually.This type of engineering of coastal area usually can run into and be the silt soil strata that stream is moulded the shape high-compressibility.Existing large diameter bored pile job practices when moulding the shape soil layer, causes the diseases such as the hole that collapses, necking down, pile foundation displacement through weak stream for preventing boring, usually adopts long casing method to construct.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 job practicess for solving the technical problem that exists in the known technology.
It is simple to the purpose of this invention is to provide a kind of technique, and easy construction is safe and reliable, and steady quality significantly reduces cost, and is applied widely, the two casing job practicess of the large diameter bored pile of production efficiency high.
The technical scheme that the two casing job practicess of large diameter bored pile of the present invention are taked is:
The two casing job practicess of a kind of large diameter bored pile is characterized in that: castinplace pile adopts two casing constructions, comprises following work progress:
1) sets the outer casing of castinplace pile: make outer casing, and set outer casing in place;
2) casing in the castinplace pile is installed: make interior casing, and interior casing is installed in outer casing top;
3) backfill: the space in the backfill between casing and outer casing has concrete to enter the space when casing displacement and perfusion in when preventing from holing;
4) bored pile construction: after the inside and outside casing installation, adopt usual manner to carry out bored pile construction;
5) interior casing is extracted: after the drill-pouring pile concreting is finished, extract interior casing before initial set;
6) outer casing is extracted: cast-in-place pile concrete intensity reach design strength 75% the time, extract outer casing, finish large diameter bored pile construction.
The two casing job practicess of large diameter bored pile of the present invention can also adopt following technical scheme:
The two casing job practicess of described large diameter bored pile, be 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 job practicess of described large diameter bored pile are characterized in: casing in making at its 0.6-1.0 rice scope place, bottom, arranges two-layer horn mouth.
The two casing job practicess of described large diameter bored pile are characterized in: in making during casing, in the casing outside, be used for setting up limiting plate on the casing outside apart from the downward 0.1-0.3 rice welding of cylinder top.
The two casing job practicess of described large diameter bored pile, be 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 the bottom.
The two casing job practicess of described large diameter bored pile are characterized in: after the interior casing installation, the space in the backfill between casing and outer casing has concrete to enter the space when casing displacement and perfusion in when preventing from holing.
Advantage and good effect that the present invention has are:
Carry out the large diameter bored pile construction at the silt soil strata that is stream and moulds the shape high-compressibility, owing to adopted the brand-new technical scheme of the present invention, significantly reduced the measure material usage.Compared with prior art, it is simple that the present invention has technique, and easy construction is safe and reliable, and steady quality significantly reduces cost, and is applied widely, and the production efficiency advantages of higher has been saved the large diameter bored pile construction cost greatly.
Description of drawings
Casing structure schematic diagram in Fig. 1;
The two casing job practices schematic diagrames of Fig. 2 large diameter bored pile.
Among the figure, the outer casing of 1-; Casing in the 2-; Casing limiting plate in the 3-; Casing stiffening rib in the 4-; Fill fine sand between the inside and outside casing of 5-; 6-original state ground.
The specific embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
The two casing job practicess of a kind of large diameter bored pile, mould 1.5 meters stake footpath pile foundations of constructing on the silt soil strata of shape high-compressibility to be stream and be example, its work progress:
The first step sets outer casing: make the outer casing of steel, selecting the hot-rolled coil of 0.01 meter of wall thickness to roll into internal diameter is 1.9 meters, the outer casing of long 20 meters (deciding on thickness of soft soil), and utilize vibrations equipment, set outer casing in place;
Second step, casing in installing: make casing in the steel, selecting the hot-rolled coil of 0.01 meter of wall thickness to roll into internal diameter is 1.53 meters, (decides with the original-pack ground discrepancy in elevation on outer casing top for long 2 meters, interior casing top exceeds outer casing top 0.1-0.3 rice, and original ground 0.1-0.3 rice is goed deep in the bottom).The casing top exceeds 0.2 meter on outer casing top in this example, in the interior casing outside apart from the top 0.2 meter welded limiting plate, be used for setting up outside casing.In the 0.6 meter scope in interior casing bottom, two-layer horn mouth is set;
The 3rd step, backfill: with the space between casing in the fine sand backfill and outer casing, have concrete to enter the space when casing displacement and perfusion in when preventing from holing;
The 4th step, bored pile construction: after the inside and outside casing installation, adopt usual manner to carry out bored pile construction;
In the 5th step, interior casing is extracted: after the drill-pouring pile concreting is finished, extract interior casing before initial set;
In the 6th step, outer casing is extracted: cast-in-place pile concrete intensity reach design strength 75% the time, extract outer casing, finish large diameter bored pile construction.
This technique has guaranteed that the 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.
The comparative example 1, and casing is extracted contrast behind long casing construction method and the pile:
Coastal and riverine area is stream and moulds bored concrete pile foundation on the silt soil strata of shape high-compressibility, mostly needs to use long casing to construct, and owing to features as poor geologic condition, most of the cylinder s buried depths are larger, and material usage is huge.The Tian Jinji three line Grade Separation Projects of clearing out a harbour have more than 1,000 of the pile foundations that the seabeach constructs on the ground, and the cylinder s buried depth is between 12-26 rice, and steel using amount is huge, and its expense occupies larger proportion in the pile foundation construction measure cost.Casing was extracted experiment after this project had been carried out long casing method construction pile:
Set 1.8 meters in a stake footpath, the experiment stake that stake is long 20 meters.Test pile used one long be 14 meters steel casing, 12 meters of the cylinder s buried depths.Experiment stake build finish after, before the pile foundation concrete initial set, utilize the slow balance of vibration hammer to extract the steel casing.
Casing is extracted comparatively smooth, and the casing of extracting 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 etc.
By analyzing, disturbance pile concrete and reinforcing cage off normal mainly are that the concrete that holds flow regime is easier to be subject to extracting the outer force-disturbance of casing because concrete not yet reaches initial set.
Pile head sinking mainly be because, the casing diameter is greater than the stake footpath, mud between casing inwall and pile concrete and slurry coat method layer, when utilizing vibration hammer to extract casing, be pulled out with the steel casing, sink to having filled up the space that stays after extracting with the concrete of consequence flow regime and cause 1.5 meters of pile head sinkings.
By think should be selected on opportunity that casing is extracted concrete strength reach designing requirement 75% the time, thereby guarantee not disturbance pile concrete and do not produce pile head sinking.But pile foundation intensity reach design strength 75% the time, the above super concrete of filling with part in ground will produce huge frictional resistance to the steel casing, and casing can't be extracted.
Through contrast, adopt the two casing job practicess of large diameter bored pile, can under ensure the quality of products stable and the reliable prerequisite of construction safety, extract outer casing, thereby reducing the construction costs, purpose of the present invention has obtained realization.
Claims (6)
1. two casing job practicess of a large diameter bored pile, it is characterized in that: castinplace pile adopts two casings constructions, comprises following work progress:
1) sets the outer casing of castinplace pile: make outer casing, and set outer casing in place;
2) casing in the castinplace pile is installed: make interior casing, and interior casing is installed in outer casing top;
3) backfill: the space in the backfill between casing and outer casing has concrete to enter the space when casing displacement and perfusion in when preventing from holing;
4) bored pile construction: after the inside and outside casing installation, adopt usual manner to carry out bored pile construction;
5) interior casing is extracted: after the drill-pouring pile concreting is finished, extract interior casing before initial set;
6) outer casing is extracted: cast-in-place pile concrete intensity reach design strength 75% the time, extract outer casing, finish large diameter bored pile construction.
2. two casing job practicess of large diameter bored pile according to claim 1, it is characterized in that: casing in making, its main part external diameter is less than matching used outer casing internal diameter 0.4-0.8 rice.
3. the two casing job practicess of large diameter bored pile according to claim 1 and 2 is characterized in that: make interior casing, at its 0.6-1.0 rice scope place, bottom, two-layer horn mouth is set.
4. two casing job practicess of large diameter bored pile according to claim 1 is characterized in that: in making during casing, in the casing outside, be used for setting up limiting plate on the casing outside apart from the downward 0.1-0.3 rice welding of cylinder top.
5. according to claim 1 or the two casing job practicess of 4 described large diameter bored piles, it is characterized in that: interior casing top exceeds outer casing top 0.1-0.3 rice, and original ground 0.1-0.3 rice is goed deep in the bottom.
6. two casing job practicess of large diameter bored pile according to claim 1 is characterized in that: after the interior casing installation, the space in the backfill between casing and outer casing has concrete to enter the space when casing displacement and perfusion in when preventing from holing.
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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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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967032A (en) * | 2014-04-16 | 2014-08-06 | 青岛理工大学 | Double-protective-cylinder cast-in-situ bored pile used for highly-corrosive salty soil and construction method of double-protective-cylinder cast-in-situ bored pile |
| CN104213555A (en) * | 2014-08-22 | 2014-12-17 | 浙江省交通工程建设集团第三交通工程有限公司 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
| CN104358252A (en) * | 2014-10-14 | 2015-02-18 | 杭州江润科技有限公司 | Structure for preventing perforation and slurry leakage of cast-in-situ bored pile in water and construction method of structure |
| CN105672255A (en) * | 2016-02-22 | 2016-06-15 | 深圳市工勘岩土集团有限公司 | Double pile casing construction method for controlling perpendicularity |
| CN106088087A (en) * | 2016-08-15 | 2016-11-09 | 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 construction method thereof |
| 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 |
| CN107642085A (en) * | 2017-10-20 | 2018-01-30 | 谢长山 | A kind of casing and karst cave treatment method for cast-in-situ bored pile |
| 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 |
| CN108755670A (en) * | 2018-07-19 | 2018-11-06 | 中国建筑第八工程局有限公司 | The control of pile crown absolute altitude and protective device and pile crown construction method |
| CN109811764A (en) * | 2019-03-28 | 2019-05-28 | 广东远大桥梁钢结构租赁有限公司 | Bored pile construction recoverable steel pile casting 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 |
| 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 |
|---|
| 于国功: "双护筒钻进技术在岩溶区桩基施工的应用", 《交通世界》 * |
| 刘冬雪: "木兰溪大桥桩基双层护筒施工技术", 《山西建筑》 * |
Cited By (21)
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| CN103967032A (en) * | 2014-04-16 | 2014-08-06 | 青岛理工大学 | Double-protective-cylinder cast-in-situ bored pile used for highly-corrosive salty soil and construction method of double-protective-cylinder cast-in-situ bored pile |
| CN104213555A (en) * | 2014-08-22 | 2014-12-17 | 浙江省交通工程建设集团第三交通工程有限公司 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
| 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 |
| CN104358252A (en) * | 2014-10-14 | 2015-02-18 | 杭州江润科技有限公司 | Structure for preventing perforation and slurry leakage of cast-in-situ bored pile in water and construction method of structure |
| 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 |
| CN105672255A (en) * | 2016-02-22 | 2016-06-15 | 深圳市工勘岩土集团有限公司 | Double pile casing construction method for controlling perpendicularity |
| 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 |
| CN106088087A (en) * | 2016-08-15 | 2016-11-09 | 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 construction method thereof |
| 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 |
| CN107642085A (en) * | 2017-10-20 | 2018-01-30 | 谢长山 | A kind of casing and karst cave treatment method for cast-in-situ bored pile |
| 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 |
| CN108755670A (en) * | 2018-07-19 | 2018-11-06 | 中国建筑第八工程局有限公司 | The control of pile crown absolute altitude and protective device and pile crown construction 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 |
| CN109811764A (en) * | 2019-03-28 | 2019-05-28 | 广东远大桥梁钢结构租赁有限公司 | Bored pile construction recoverable steel pile casting 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 |
| 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 |
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