CN104652431A - Steel protecting tube for preventing hole collapse and reducing of drilling pile under deep sea silt and construction method for steel protecting tube - Google Patents
Steel protecting tube for preventing hole collapse and reducing of drilling pile under deep sea silt and construction method for steel protecting tube Download PDFInfo
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- CN104652431A CN104652431A CN201510054582.6A CN201510054582A CN104652431A CN 104652431 A CN104652431 A CN 104652431A CN 201510054582 A CN201510054582 A CN 201510054582A CN 104652431 A CN104652431 A CN 104652431A
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Abstract
The invention discloses a steel protecting tube for preventing hole collapse and reducing of a drilling pile under deep sea silt. The steel protecting tube comprises a steel protecting tube body with the thickness of 1cm, wherein a steel ring is welded at the lower end side of the steel protecting tube body; the thickness of the steel ring is 1cm; the height of the steel ring is 30cm. The invention also discloses a construction method for the steel protecting tube. The construction method comprises the following steps: the steel protecting tube body with the thickness of 1cm is produced; the steel ring is welded at the lower end side of the steel protecting tube body, wherein the thickness of the steel ring is 1cm, and the height of the steel ring is 30cm; welding seams between sections are reinforced; at the position of the drilling pile, the steel protecting tube body is drilled by a vibrating hammer; the bottom of the protecting tube body is required to penetrate through a silt layer and enter bottom clay by a depth of 1m; the top surface of the protecting tube body is required to be exposed out of the ground by 1m; then a rotary drilling rig is used for drilling, descending a reinforcing cage and casting piles in the protecting tube body; subsequent chiseling off of the pile head, pile testing, pile splicing and column connecting construction can be smoothly operated in the steel protecting tube body. According to the steel protecting tube and the construction method disclosed by the invention, by adopting an improved deep steel protecting tube, a pile base is smoothly constructed, the subsequent chiseling off of the pile head, the pile splicing and the column connecting can be smoothly operated in the steel protecting tube, and the wall protecting action for the construction of subsequent working procedures is realized.
Description
Technical field
The invention belongs to construction technical field, relate to a kind of steel pile casting preventing drilled pile collapse hole undergauge under deep extra large mud, the invention still further relates to the construction method of this steel pile casting.
Background technology
Construct in deep extra large mud pile foundation, hole easy collapse hole and necking deformation, generally adopt steel pile casting follow-up construction method, deal with improperly, more major break down can be caused, during the lake bridge pile foundation construction of new light path shore, Lianyungang, because this boring is located in mud, though take to bury the dark steel pile casting of 15m underground in construction, steel pile casting is nuzzled argillic horizon 1m, because wall thickness only has 8mm, and end does not thicken, weld seam does not pass a test, and causes gross distortion and cracking in steel pile casting injection process, bores not go down.Can only extract casing, what have has pulled off, and makes situation become more bad, repeatedly can only beat with Churn drill, be firmly extruded onto hole wall surrounding flat for the casing hammer do not extracted, such situation one pile will process two weeks by one month, really do not go down, will design for change, carry out adding stake process.
Summary of the invention
The object of this invention is to provide a kind of steel pile casting preventing drilled pile collapse hole undergauge under deep extra large mud, solve problems of the prior art, drilled pile construction in deep extra large mud is carried out smoothly.
Another object of the present invention is to provide the construction method of the steel pile casting preventing drilled pile collapse hole undergauge under deep extra large mud.
The technical solution adopted in the present invention is, prevents the steel pile casting of drilled pile collapse hole undergauge under deep extra large mud, steel pile casting wall thickness 1cm; Steel pile casting external diameter 20cm larger than the diameter of stake, too greatly, too little all improper; The lower end of steel pile casting must increase welding steel ring, otherwise when squeezing into, steel pile casting is involute distortion easily, and steel loop thickness is 1cm, highly adopts 30cm; Due to internode junction easy fracture, casing internode weld seam must be strengthened.
Another technical scheme of the present invention is, prevent the steel pile casting construction method of drilled pile collapse hole undergauge under deep extra large mud, specifically carry out according to following steps: the steel pile casting that preparation 1cm is thick, the lower end side welding steel ring of steel pile casting, steel loop thickness is 1cm, be highly 30cm, strengthen internode weld seam, in drilled pile position, by vibrating hammer, steel pile casting is squeezed into, must through mud bottom casing, enter bottom clay 1m dark, casing end face must basset 1m, then hole in casing with convolution rig, descending reinforcing cage and water the operations such as stake, follow-uply cut pile crown, peg, pile extension, connect the constructions such as post all to carry out smoothly in steel pile casting.
The invention has the beneficial effects as follows, during pile foundation construction, adopt the dark steel pile casting through improving, not only pile foundation construction is smooth, cut pile crown, pile extension below, connect post and all can carry out smoothly in steel pile casting, good retaining wall effect is served to the construction of operation below, this invention makes pile foundation construction under deep extra large mud become can to implement, simple and direct, economy, safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of steel pile casting in the present invention.
In figure, 1. steel pile casting, 2. steel loop.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Prevent the steel pile casting of drilled pile collapse hole undergauge under deep extra large mud, structure as shown in Figure 1, comprises the thick steel pile casting of 1cm 1, and the lower end side welding steel ring 2 of steel pile casting 1, steel loop 2 thickness is 1cm, is highly 30cm.
Prevent the steel pile casting construction method of drilled pile collapse hole undergauge under deep extra large mud, specifically carry out according to following steps: the steel pile casting 1 that preparation 1cm is thick, the lower end side welding steel ring 2 of steel pile casting 1, steel loop 2 thickness is 1cm, be highly 30cm, strengthen internode weld seam, in drilled pile position, by vibrating hammer, steel pile casting is squeezed into, must through mud bottom casing, enter bottom clay 1m dark, casing end face must basset 1m, then hole in casing with convolution rig, descending reinforcing cage and water the operations such as stake, follow-uply cut pile crown, peg, pile extension, connect the constructions such as post all to carry out smoothly in steel pile casting.
During certain bridge pile foundation construction, because this boring is located in deep Sea Area Grading, though take to bury the dark steel pile casting of 15m underground in construction, protecting tube embedding is to argillic horizon, wall thickness 8mm, because end does not thicken, and weld seam is defective, cause the serious involute distortion in casing end, casing Central Cracking, bore not go down.Casing can only be extracted, what have has pulled off, situation is made to become more bad, repeatedly can only beat with Churn drill, repeatedly beat with Churn drill, firmly be extruded onto hole wall surrounding flat for the casing hammer do not extracted, such situation one pile will process two weeks by one month, really do not go down, will design for change, carry out adding stake process.Adopted method of the present invention afterwards, and all thickeied to 10mm casing, and strengthened internode weld seam, and help at steel pile casting the steel loop welding the thick high 30cm of 1cm bottom, follow-up pile driving construction is just smooth.
After adopting the inventive method, during pile foundation construction in deep & thick silt, adopt the dark steel pile casting through improving, not only pile foundation construction is smooth, cut pile crown, pile extension below, connect post and all can carry out smoothly in steel pile casting, good retaining wall effect is served to the construction of operation below, this invention makes pile foundation construction under deep extra large mud become can to implement, simple and direct, economy, safety.
Claims (2)
1. prevent the steel pile casting of drilled pile collapse hole undergauge under deep extra large mud, it is characterized in that, comprise the thick steel pile casting of 1cm (1), lower end side welding steel ring (2) of steel pile casting (1), steel loop (2) thickness is 1cm, is highly 30cm.
2. prevent the steel pile casting construction method of drilled pile collapse hole undergauge under deep extra large mud, it is characterized in that, specifically carry out according to following steps: the steel pile casting that preparation 1cm is thick, the lower end side welding steel ring of steel pile casting, steel loop thickness is 1cm, be highly 30cm, strengthen internode weld seam, in drilled pile position, by vibrating hammer, steel pile casting is squeezed into, must through mud bottom steel pile casting, enter bottom clay 1m dark, steel pile casting end face must basset 1m, then hole in steel pile casting with convolution rig, descending reinforcing cage and water an operation, follow-uply cut pile crown, peg, pile extension, connect post construction all to carry out smoothly in steel pile casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054582.6A CN104652431A (en) | 2015-02-02 | 2015-02-02 | Steel protecting tube for preventing hole collapse and reducing of drilling pile under deep sea silt and construction method for steel protecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054582.6A CN104652431A (en) | 2015-02-02 | 2015-02-02 | Steel protecting tube for preventing hole collapse and reducing of drilling pile under deep sea silt and construction method for steel protecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104652431A true CN104652431A (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510054582.6A Pending CN104652431A (en) | 2015-02-02 | 2015-02-02 | Steel protecting tube for preventing hole collapse and reducing of drilling pile under deep sea silt and construction method for steel protecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104652431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640049A (en) * | 2016-10-14 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Automatic necking drilling device capable of keeping original state of drill hole wall |
| CN112482365A (en) * | 2020-12-08 | 2021-03-12 | 中电建路桥集团有限公司 | Construction method and device for deep silt geological long pile foundation |
Citations (5)
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| JPS5725688B2 (en) * | 1978-08-04 | 1982-05-31 | ||
| CN1743564A (en) * | 2005-09-28 | 2006-03-08 | 河北建设勘察研究院有限公司 | Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder |
| CN101294384A (en) * | 2008-07-01 | 2008-10-29 | 北京住总集团有限责任公司 | Pile, pole interface positioning device and construction method |
| CN102704480A (en) * | 2012-06-03 | 2012-10-03 | 中交第四公路工程局有限公司 | Construction method for processing ultra-thick quicksand layer of pile foundation by using front-end vibration steel casing |
| CN204590012U (en) * | 2015-02-02 | 2015-08-26 | 淮海工学院 | Prevent the steel pile casting of drilled pile collapse hole undergauge under deep extra large mud |
-
2015
- 2015-02-02 CN CN201510054582.6A patent/CN104652431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725688B2 (en) * | 1978-08-04 | 1982-05-31 | ||
| CN1743564A (en) * | 2005-09-28 | 2006-03-08 | 河北建设勘察研究院有限公司 | Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder |
| CN101294384A (en) * | 2008-07-01 | 2008-10-29 | 北京住总集团有限责任公司 | Pile, pole interface positioning device and construction method |
| CN102704480A (en) * | 2012-06-03 | 2012-10-03 | 中交第四公路工程局有限公司 | Construction method for processing ultra-thick quicksand layer of pile foundation by using front-end vibration steel casing |
| CN204590012U (en) * | 2015-02-02 | 2015-08-26 | 淮海工学院 | Prevent the steel pile casting of drilled pile collapse hole undergauge under deep extra large mud |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640049A (en) * | 2016-10-14 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Automatic necking drilling device capable of keeping original state of drill hole wall |
| CN112482365A (en) * | 2020-12-08 | 2021-03-12 | 中电建路桥集团有限公司 | Construction method and device for deep silt geological long pile foundation |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150527 |