CN101644050B - Combined steel casing and construction method of waterborne drilled pile based on same - Google Patents
Combined steel casing and construction method of waterborne drilled pile based on same Download PDFInfo
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- CN101644050B CN101644050B CN 200910063788 CN200910063788A CN101644050B CN 101644050 B CN101644050 B CN 101644050B CN 200910063788 CN200910063788 CN 200910063788 CN 200910063788 A CN200910063788 A CN 200910063788A CN 101644050 B CN101644050 B CN 101644050B
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Abstract
The invention discloses a combined steel casing and a construction method of a waterborne drilled pile based on the same. The combined steel casing comprises an outer steel casing and an inner steel casing which is arranged in the outer steel casing and comprises a steel casing body; the steel casing wall is provided with an opening contact seam along the axial direction; lockpin devices of the opening contact seam are alternately arranged on the casing wall at both sides of the opening contact seam; the lockpin devices comprise locking sleeves respectively connected with the casing wall of the opening contact seam; and the locking sleeves at both sides are connected by bolts. The drilled pile can be constructed in the inner steel casing capable of being opened and closed for repeated use. After the final setting construction of the drilled pile is finished, the bolts of the lockpin devices of the steel casing capable of being opened and closed for repeated use are drawn out, the inner steel casing capable of being opened and closed is pulled out, and the outer steel casing can also be pulled out. The steel casing can be pulled out for repeated use, greatly reduces the consumption of the steel casing and decreases the construction cost.
Description
Technical field
The invention belongs to foundation construction method, be specifically related to a kind of job practices of drilled pile waterborne.
Background technology
The job practices of present drilled pile waterborne is to establish drilling platform, carry out hole clearly behind the sinking steel casing pore-forming, in the steel casing, carry out pile foundation construction, treat that the pile foundation concrete reaches certain intensity after, need the above part steel casing in stake top is cut off, do not remove with the steel casing of pile body contact portion.The steel casing of this structure can not repeat turnover and use, and the material that reclaims the steel casing is few, and rolled steel dosage is big, the cost height.
Summary of the invention
The object of the present invention is to provide a kind of drilled pile construction method waterborne and combination steel casing thereof, to address the above problem based on combination steel casing.
Realize the drilled pile construction method waterborne based on combination steel casing of one of the object of the invention, it is to set up drilling platform, and the outer steel casing of sinking is behind the clear hole of pore-forming; After sinking internal layer steel casing puts in place in outer steel casing, in internal layer steel casing, carry out pile foundation construction; After treating the final set of pile foundation concrete, extract internal layer steel casing out, extract outer steel casing again out; Described internal layer steel casing comprises steel casing body, and steel casing barrel offers opening contact seam vertically; Establish the latch gear of open seam on the barrel of open seam both sides at interval.
Described extraction internal layer steel casing is the latch gear of opening on the internal layer steel casing, with vibrating hammer internal layer steel casing is extracted.
The described latch gear of opening on the internal layer steel casing is the latch of extracting in the latch gear, and the opening contact seam nature that internal layer steel casing is offered vertically opens.
With the following joint support tube sinking of internal layer steel casing to making its bottom stretch out outer steel casing bottom.
Realize two the combination steel casing of the object of the invention, it comprises outer steel casing, it is characterized in that it also comprises the internal layer steel casing of establishing in the outer steel casing, and internal layer steel casing comprises steel casing body, and steel casing barrel offers opening contact seam vertically; Establish at interval the latch gear of open seam on the barrel of open seam both sides, latch gear comprises on the barrel of open seam both sides and connects lock tube, is connected by latch between the lock tube of both sides.
Described latch upper end connects the rope of pulling pin.
The rope other end of pulling pin on described each latch is connected to the pull rope of pulling pin, and the other end of the pull rope of pulling pin is located at the upper end of steel casing body.
Latch in the latch gear of establishing is to run through the bolt rod that connects plural lock tube at interval.
But drilled pile is constructed in the reusable internal layer steel of folding casing, and outer steel casing plays the effect of carrying external water pressure and location.After drilled pile construction final set is finished, but after the latch extraction with the reusable steel casing of folding latch gear, steel casing barrel opening contact seam distending vertically, after treating that the pile foundation concrete reaches certain intensity, be but that available vibrating hammer is extracted internal layer folding steel casing, and outer steel casing also can be extracted.The steel casing of structure of the present invention can be extracted repeated use, and what significantly reduce the steel casing uses the material amount, reduces and builds construction cost.
Description of drawings
Fig. 1 looks schematic diagram based on combination steel steel casing master.
Fig. 2 is based on combination steel steel casing schematic top plan view.
Fig. 3 latch gear structural representation.
Fig. 4 support limit plate schematic diagram.
The specific embodiment
Present embodiment is used for the explanation to invention claims, and protection scope of the present invention is not limited to the structure of following description.The following structural change of being done in those skilled in the art's technical solution of the present invention that is different from all belongs to protection scope of the present invention.
As shown in Figure 1, outer steel casing 7 is to be welded into monolithic steel casing, and is identical with existing steel casing structure.Be provided with internal layer steel casing 8 in the outer steel casing 7, have gap 9 between internal layer steel casing 8 and the outer steel casing 7.Internal layer steel casing 8 comprises that steel casing body 1 is that steel sheet rolls and forms, and steel casing barrel offers opening contact seam 2 vertically, and the gap of opening contact seam 2 is 0～5 millimeter.The barrel of open seam both sides is provided with the latch gear 3 of open seam from top to bottom at interval.Steel casing body is located at down for 1 time on the joint support tube 4, and the barrel of following joint support tube 4 is provided with support limit plate 5 along circumference, and support limit plate 5 is offered lifting hole(eyelet) 6, shown in Fig. 2,4.Under save support tube 4 and be enclosed within the steel casing body 1, the lower surface of steel casing body 1 is supported on the support limit plate 5.
Connection latch in the present embodiment on the steel casing body divides upper latch and bottom latch.Upper latch is to run through the bolt rod 3.4 (as shown in Figure 1) that connects plural lock tube, and promptly bolt rod 3.4 passes the seven groups of lock tubes 3.1 on steel casing barrel top and the pin-and-hole of lock tube 3.2;
The bottom latch is a single lock tube latch 3.3 (shown in Figure 3), latch 3.3 is offered connecting hole 3.9, latch 3.3 upper ends connect the rope 3.5 of pulling pin, and rope 3.5 other ends of pulling pin on each latch 3.3 are connected to the pull rope 3.6 of pulling pin, and the other end of the pull rope 3.6 of pulling pin is located at the upper end of steel casing body.
The rope 3.5 of pulling pin in the said structure is wire rope with the pull rope 3.6 of pulling pin.Said structure had both solved whole lock tubes when adopting same bolt rod to connect, and the coaxial demanding problem of the pin-and-hole of lock tube also solves the problem that the bottom latch is extracted out.
Internal layer steel casing 8 employing Q235 steel sheets roll and form in the present embodiment.Protect simplified 1 internal diameter in the internal layer than the big 1～1.5cm of lower support tube 4 external diameters, lower support tube 4 internal diameters equal the drilled pile diameter, and length is 2m, and it is 20cm that lower support tube 4 stretches into the interior casing body 1 interior length of internal layer.Lower support tube 4 is connected with casing body 1 in the internal layer with wire rope 5.1 by being welded on oneself 4 blocks of support limit plates 5 on one's body temporarily.
The drilled pile construction embodiment waterborne of combinations thereof steel casing is as follows:
1, set up drilling platform according to routine, the outer steel casing 7 of sinking carries out the clear hole first time behind the pore-forming.
2, internal layer steel casing 8 is transported on the drilling platform, sinking internal layer steel casing 8, outer steel casing 7 bottom 1.6m are stretched out in its bottom, and are fixed on the drilling platform.
3, transfer reinforcing cage, cast drilled pile concrete.
4, after the final set of pile foundation concrete, extract the elongated latch 3.4 of casing body 1 top 6m in the internal layer earlier, extract the latch 3.3 of casing body 1 bottom in the internal layer from the bottom up successively by the wire rope 3.6 of pulling pin then, after latch 3.3 was extracted, casing body 1 opened along opening contact seam nature in the internal layer.
5, extract wire rope 5.1 on the lower support tube 4 support limit plates 5 out, treat that the pile foundation concrete reaches certain intensity after, with vibrating hammer casing body 1 in the internal layer is extracted, wear pin after turnover use.
6, outer steel casing 7 uses as the mud circulation pond of adjacent pile foundation construction, treats after the adjacent holes pile foundation construction finishes it to be extracted.
The present invention in pile foundation construction, reduces steel casing consumption because internal layer steel casing and outer steel casing can overlap the turnover use, because concrete perfusion is finished, saves the concrete square amount simultaneously in internal layer steel casing.
Claims (9)
1. drilled pile construction method waterborne based on combination steel casing, it is to set up drilling platform, the outer steel casing of sinking is behind the clear hole of pore-forming; After sinking internal layer steel casing puts in place in outer steel casing, in internal layer steel casing, carry out pile foundation construction; After treating the final set of pile foundation concrete, extract internal layer steel casing out, extract outer steel casing again out; Described internal layer steel casing comprises steel casing body, and steel casing barrel offers opening contact seam vertically; Establish the latch gear of open seam on the barrel of open seam both sides at interval; Be located at down under the steel casing body on the joint support tube, the barrel that saves support tube down is provided with the support limit plate along circumference, the support limit plate is offered lifting hole(eyelet), and following joint support tube is enclosed within the steel casing body, and following joint support tube is connected with internal layer steel casing body with wire rope by the support limit plate of welding temporarily.
2. according to claim 1 based on the drilled pile construction method waterborne of combination steel casing, it is characterized in that extracting out internal layer steel casing is the latch gear of opening on the internal layer steel casing, with vibrating hammer internal layer steel casing is extracted.
3. as claimed in claim 1 or 2 based on the drilled pile construction method waterborne of combination steel casing, it is characterized in that internal layer steel casing is supported on down on the joint support tube; Described extraction internal layer steel casing is to extract out to go up folding internal layer steel casing.
As described in the claim 3 based on the drilled pile construction method waterborne of combination steel casing, it is characterized in that following joint support tube sinking with internal layer steel casing is to making its bottom stretch out outer steel casing bottom.
As described in the claim 2 based on the drilled pile construction method waterborne of combination steel casing, it is characterized in that the described latch gear of opening on the internal layer steel casing is the latch of extracting in the latch gear, the opening contact seam nature that internal layer steel casing is offered vertically opens.
6. one kind is made up the steel casing, and it comprises outer steel casing, it is characterized in that it also comprises the internal layer steel casing of establishing in the outer steel casing, and internal layer steel casing comprises steel casing body, and steel casing barrel offers opening contact seam vertically; Establish at interval the latch gear of open seam on the barrel of open seam both sides, latch gear comprises on the barrel of open seam both sides and connects lock tube, is connected by latch between the lock tube of both sides; It also comprises joint support tube down, under save support tube and comprise barrel, barrel is provided with the support limit plate, internal layer steel casing is enclosed within down on the joint support tube and is supported by the support limit plate, the support limit plate is offered lifting hole(eyelet), under save support tube and be enclosed within the steel casing body, following joint support tube is connected with internal layer steel casing body with wire rope by the support limit plate of welding temporarily.
7. as combination steel casing as described in the claim 6, it is characterized in that the latch upper end connects the rope of pulling pin.
8. as combination steel casing as described in the claim 7, it is characterized in that the pulling pin rope other end on each latch is connected to the pull rope of pulling pin, the other end of the pull rope of pulling pin is located at the upper end of steel casing body.
9. as combination steel casing as described in the claim 6, the latch in the latch gear that it is characterized in that establishing at interval is to run through the bolt rod that connects plural lock tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063788 CN101644050B (en) | 2009-09-01 | 2009-09-01 | Combined steel casing and construction method of waterborne drilled pile based on same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063788 CN101644050B (en) | 2009-09-01 | 2009-09-01 | Combined steel casing and construction method of waterborne drilled pile based on same |
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| Publication Number | Publication Date |
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| CN101644050A CN101644050A (en) | 2010-02-10 |
| CN101644050B true CN101644050B (en) | 2011-09-21 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808411A (en) * | 2011-06-01 | 2012-12-05 | 五冶集团上海有限公司 | Bored cast-in-place pile casing and using method thereof |
| CN104480934A (en) * | 2014-12-12 | 2015-04-01 | 中铁十九局集团有限公司 | Water drilling pile foundation construction system capable of recycling outer steel protecting tube, and construction method of water drilling pile foundation construction system |
| CN105002890B (en) * | 2015-07-15 | 2017-03-08 | 杭州江润科技有限公司 | A kind of profundal zone cast-in-situ bored pile is lossless to assemble and disassemble double-deck steel pile casting group structure and construction method |
| CN106677176B (en) * | 2016-12-30 | 2018-10-26 | 重庆中材参天建材有限公司 | A kind of steel pile casting device convenient for recycling |
| CN107100165A (en) * | 2017-06-08 | 2017-08-29 | 中交第二航务工程勘察设计院有限公司 | A kind of drilled pile solution cavity leak stopping elastic steel cylinder and its operating method |
| CN109958128B (en) * | 2019-04-01 | 2024-02-27 | 浙江交工路桥建设有限公司 | Pile foundation drilling steel casing inserted into land deep soil layer and recovery method thereof |
| CN110004922A (en) * | 2019-05-10 | 2019-07-12 | 广东远大桥梁钢结构租赁有限公司 | A kind of casing |
| CN110469272B (en) * | 2019-07-31 | 2020-10-23 | 中国一冶集团有限公司 | Reaming and recovering device for pile foundation casing follow-up construction |
| CN110777787A (en) * | 2019-10-18 | 2020-02-11 | 中铁十局集团第一工程有限公司 | Method for preventing drilled pile from collapsing by automatically bouncing steel casing |
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