CN102704467B - Method for forming hole in elastic clay layer by rotary drilling - Google Patents
Method for forming hole in elastic clay layer by rotary drilling Download PDFInfo
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- CN102704467B CN102704467B CN201210166877.9A CN201210166877A CN102704467B CN 102704467 B CN102704467 B CN 102704467B CN 201210166877 A CN201210166877 A CN 201210166877A CN 102704467 B CN102704467 B CN 102704467B
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Abstract
The invention discloses a method for forming a hole in an elastic clay layer by rotary drilling. The method comprises the steps of when encountering an elastic clay layer during the drilling process, stopping the drilling; after the drilling is stopped, lifting up a drilling bucket, and pouring the concrete into a pile hole; inserting a vibrating rod into the elastic clay in the pile hole and the concrete poured in, vibrating and expanding the elastic clay and the concrete so as to seep concrete into the elastic clay and solidify the elastic clay; drilling a rotary drilling machine into the solidified elastic clay again to carry out the hole forming in a mode of dry working clay taking; and lifting up and taking out the clay; and grasping the solidified elastic clay out so as to form the hole in the elastic clay layer. According to the method, the construction process is reasonable, the operation is convenient and practical and the defect of the traditional rotating drilling hole forming technology is overcome; the benefits in four aspects, namely security, working efficiency, quality and cost, are achieved; and the method can be used both in base piles of various buildings, various structures and bridge engineering with improved bearing ability of the base piles, and used in base pit support campshed so as to realize the double functions of soil baffle and water stop.
Description
Technical field
The invention belongs to engineering construction pile foundation pore-forming field, specifically, relate to a kind of method using rotary dig drilling pore-forming in rubber soil layer.
Background technology
Complicated in engineering geology, place often belongs to flood land, and basis adopts bored pile, at present, in soil layer during lower sleeping rubber soil layer, due to spongy soil very thickness, index of plasticity is excessive, uses churning driven construction not go down, spongy soil can not be taken out of by rotary drilling rig, cause sleeping rubber soil layer cannot pore-forming, rig cannot continue downwards to bore, and causes and gives up halfway.The pore-forming of present rubber soil layer, in construction or a difficult problem both domestic and external.
Summary of the invention
For solving above technical problem, the object of the present invention is to provide a kind of method of rotary dig drilling pore-forming in rubber soil layer of easy to operate practicality.
The object of the present invention is achieved like this:
A method for rotary dig drilling pore-forming in rubber soil layer, its key is to carry out as follows successively:
Step (1) construction site layout;
Step (2) stake position setting-out;
Step (3) rotary digging drilling machine is in place;
Step (4) drilling construction;
Run into rubber soil layer in step (5) rotary dig drilling process, time-out creeps into, and after stopping brill, mentions drilling bucket;
Step (6) to be fallen down concrete with tumbling barrel in stake holes, inserts in spongy soil in stake holes and the concrete poured into the bar that vibrates, and vibrates and squeezed to spongy soil-concrete, allows concrete evenly infiltrate spongy soil, is solidified by spongy soil; This step is very ingenious, and is committed step, directly creeps into rotary drilling rig cannot carry out rubber soil layer, can not pore-forming, by adding concrete, and carries out vibrating and squeezed, allows in concrete uniformly penetrating to spongy soil and is cured.
Step (7) rotary drilling rig creeps into again carries out dry operation soil taking hole forming in the spongy soil that have cured, and promotes casting, is caught by the spongy soil that have cured, at rubber soil layer pore-forming, very simply just solve this difficult problem.
The middle spongy soil of above-mentioned steps (6) is cured to index of plasticity and reaches Ip <=17.Ip is index of plasticity, and through determination and analysis, spongy soil is cured to index of plasticity and reaches Ip <=17, just can substantially meet rotary drilling rig and creep into, soil taking hole forming.
The bar that vibrates in above-mentioned steps (6) adopts shaped steel or steel pipe as structure force transmission element.
Beneficial effect: construction technology of the present invention is reasonable, easy to operate practicality, overcome the deficiency of rotary dig drilling hole creating technology, embody four wins of safety, work efficiency, quality, cost, both can be used for the foundation pile of various building and various structure and bridge engineering, improve the bearing capacity of pile foundation, can be used for again pattern foundation pit supporting structure campshed, the dual-use function realizing gear soil and intercept water.
Embodiment
A method for rotary dig drilling pore-forming in rubber soil layer, carry out as follows successively:
Step (1) construction site layout;
Step (2) stake position setting-out;
Step (3) rotary digging drilling machine is in place;
Step (4) drilling construction, carries out geological condition record after drilling construction;
Run into rubber soil layer in step (5) rotary dig drilling process, time-out creeps into, and after stopping brill, mentions drilling bucket;
Step (6) to be fallen down concrete with tumbling barrel in stake holes, with spongy soil in bar insertion stake holes of vibrating with in the concrete poured into, the bar that vibrates can adopt shaped steel or steel pipe to vibrate with squeezed as structure force transmission element to spongy soil and concrete, concrete is allowed evenly to infiltrate spongy soil, spongy soil is solidified, spongy soil be cured to index of plasticity reach Ip <=17 can (index of plasticity should by sink to corresponding to 76g taper appliance the liquid limit that measures when the degree of depth is 10mm in soil calculate obtain), spongy soil after the solidification that index of plasticity Ip is taken out by scene is surveyed and obtains.
Step (7) rotary drilling rig creeps into again carries out dry operation soil taking hole forming in the spongy soil that have cured, and promotes casting, is caught by the spongy soil that have cured, at rubber soil layer pore-forming.
After pore-forming, conveniently, place in stake holes make early stage reinforcing bar cage, conduit is installed, placing of concrete in hole, sampling are tested, form dry job state under castinplace pile.
Claims (2)
1. the method for rotary dig drilling pore-forming in rubber soil layer, is characterized in that carrying out as follows successively:
Step (1) construction site layout;
Step (2) stake position setting-out;
Step (3) rotary digging drilling machine is in place;
Step (4) drilling construction;
Run into rubber soil layer in step (5) rotary dig drilling process, time-out creeps into, and after stopping brill, mentions drilling bucket;
Step (6) to be fallen down concrete with tumbling barrel in stake holes, inserts in spongy soil in stake holes and the concrete poured into the bar that vibrates, and vibrates and squeezed to spongy soil and concrete, allows concrete evenly infiltrate spongy soil, is solidified by spongy soil;
Step (7) rotary drilling rig creeps into again, carries out dry operation soil taking hole forming and promotes casting, caught by the spongy soil of solidification, at rubber soil layer pore-forming in the spongy soil that have cured;
The middle spongy soil of described step (6) is cured to index of plasticity and reaches Ip <=17.
2. the method for rotary dig drilling pore-forming in rubber soil layer according to claim 1, is characterized in that: the bar that vibrates in described step (6) adopts shaped steel or steel pipe as structure force transmission element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210166877.9A CN102704467B (en) | 2012-05-25 | 2012-05-25 | Method for forming hole in elastic clay layer by rotary drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210166877.9A CN102704467B (en) | 2012-05-25 | 2012-05-25 | Method for forming hole in elastic clay layer by rotary drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704467A CN102704467A (en) | 2012-10-03 |
| CN102704467B true CN102704467B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210166877.9A Active CN102704467B (en) | 2012-05-25 | 2012-05-25 | Method for forming hole in elastic clay layer by rotary drilling |
Country Status (1)
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| CN (1) | CN102704467B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056724B (en) * | 2017-03-08 | 2021-01-15 | 林裕光 | Pile expanding equipment for road and bridge engineering |
| CN107842313B (en) * | 2017-11-28 | 2019-04-30 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
| CN109184564A (en) * | 2018-08-17 | 2019-01-11 | 上海二十冶建设有限公司 | Method for correcting error when oblique rock stratum is met in a kind of rotary drilling rig pore-forming |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376340A3 (en) * | 1988-12-29 | 1991-05-22 | Takechi Engineering Co., Ltd. | Methods of determining capability and quality of foundation piles and of designing foundation piles, apparatus for measuring ground characteristics, method of making hole for foundation pile such as cast-in-situ pile and apparatus therefor |
| CN1831250A (en) * | 2005-03-07 | 2006-09-13 | 徐州工程机械科技股份有限公司徐工研究院 | Construction technology of dry soil taking hole forming method of rotary digging drilling machine |
| CN102021906A (en) * | 2010-12-16 | 2011-04-20 | 河南省新开元路桥工程咨询有限公司 | Method for reinforcing soft soil foundation at deep mixing pile |
| CN102235152A (en) * | 2010-04-22 | 2011-11-09 | 上海市第七建筑有限公司 | Hole-forming construction method for bored pile on high-strength stabilized soil layer |
-
2012
- 2012-05-25 CN CN201210166877.9A patent/CN102704467B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376340A3 (en) * | 1988-12-29 | 1991-05-22 | Takechi Engineering Co., Ltd. | Methods of determining capability and quality of foundation piles and of designing foundation piles, apparatus for measuring ground characteristics, method of making hole for foundation pile such as cast-in-situ pile and apparatus therefor |
| CN1831250A (en) * | 2005-03-07 | 2006-09-13 | 徐州工程机械科技股份有限公司徐工研究院 | Construction technology of dry soil taking hole forming method of rotary digging drilling machine |
| CN102235152A (en) * | 2010-04-22 | 2011-11-09 | 上海市第七建筑有限公司 | Hole-forming construction method for bored pile on high-strength stabilized soil layer |
| CN102021906A (en) * | 2010-12-16 | 2011-04-20 | 河南省新开元路桥工程咨询有限公司 | Method for reinforcing soft soil foundation at deep mixing pile |
Non-Patent Citations (1)
| Title |
|---|
| 旋挖成孔孔壁固化技术;刘睿等;《陕西建筑》;20080831(第158期);第33页左侧第1段，右侧最后1段，第32页左侧第2-3段，右侧第2-5段 * |
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| CN102704467A (en) | 2012-10-03 |
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Address after: 400023 Chongqing Jiangbei District Wujiang Road No. 18 five industrial design center on the third floor Patentee after: ZHONGSHE ENGINEERING CONSULTING (CHONGQING) Co.,Ltd. Address before: 400023 Chongqing Jiangbei District Wujiang Road No. 18 five industrial design center on the third floor Patentee before: CHONGQING ZHONGSHE ENGINEERING DESIGN Co.,Ltd. |
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