CN101397793A - Rammed concrete stiffening cement mixing pile and construction method thereof - Google Patents
Rammed concrete stiffening cement mixing pile and construction method thereof Download PDFInfo
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- CN101397793A CN101397793A CNA2008101218569A CN200810121856A CN101397793A CN 101397793 A CN101397793 A CN 101397793A CN A2008101218569 A CNA2008101218569 A CN A2008101218569A CN 200810121856 A CN200810121856 A CN 200810121856A CN 101397793 A CN101397793 A CN 101397793A
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Abstract
The invention discloses a rammed concrete reinforced concrete mixing pile, which adopts rammed concrete to the pile core position of the concrete mixing pile, with the surrounding of the concrete being wrapped with concrete-treated soil. The invention also provides a construction method of the rammed concrete reinforced concrete mixing pile, which comprises the following steps: 1) the concrete-treated soil mixing pile is formed; 2) immersed tube equipment is in position; 3) a neck coil and an internal ramming tube are sleeved into an external ramming tube, and the internal ramming tube and the external ramming tube are filled with dry-mixed concrete; 4) the external ramming tube and the internal ramming tube are hammed to a designated position; 5) the internal ramming tube is lifted over the external ramming tube; 6) a first ramming material is poured; 7) the internal ramming tube is released and presses the top surface of the concrete, and then the external ramming tube is pulled upward; 8) the internal ramming tube is hammed to ham out the concrete, and ensure that the internal ramming tube and the external ramming tube are sunk synchronously; 9) a second or a plurality of times of rammings are carried according to the above construction process; 10) the internal ramming tube is pulled out; and 11) the external ramming tube is continuously fed with materials and pulled out. The invention integrates the advantages of the concrete mixing pile and the rammed concrete pile, thus greatly enhancing the bearing capacity of the pile body, and is characterized by easy quality assurance and significant economic effect.
Description
Technical field
The present invention relates to a kind of cement mixing pile, this stake is applicable to the civil engineering groundwork basic field.
Background technology
Cement mixing pile is a kind of semi-rigid half flexible pile, because the high-compressibility of cement-soil and lower bending resistance, shear behavior, its range of application is very limited, and especially this respect defective is more outstanding when the superstructure load is big.For effectively improving the mechanical property of deep-mixed pile, improve bending resistance, shear behavior and the vertical bearing capacity of single pile of cement mixing pile, in cement mixing pile, insert rigid material.
Summary of the invention
Technical problem to be solved by this invention provides the higher rammed concrete stiffening cement mixing pile of a kind of bearing capacity.
Rammed concrete stiffening cement mixing pile provided by the invention for this reason adopts rammed concrete in cement mixing pile stake core position, concrete peripheral parcel cement-soil.
The present invention also provides the job practices of above-mentioned rammed concrete stiffening cement mixing pile, comprises
1) cement mixing method pile;
2) immersed tube equipment is in place;
3) will add neck ring, inner tamping tube and be inserted in outer the rammer in the pipe, fill out dry-mix concrete in the inside and outside rammer pipe cavity;
4) hammering ram outward the pipe and inner tamping tube to assigned address;
5) promoting inner tamping tube to outer rammer manages overhead;
6) pouring into for the first time, rammer expands material;
7) put into inner tamping tube and push down concrete pavement, pull out the outer pipe that rams on then;
8) the hammering inner tamping tube goes out the coagulation earth rammer, and the inside and outside pipe that rams is sunk synchronously;
9) carry out the second time or repeatedly ram expansion according to above-mentioned construction technology;
10) extract inner tamping tube;
11) ram outward and continue in the pipe to feed intake and extract the outer pipe that rams.
Because the present invention combines the advantage of cement mixing pile and rammed concrete stake, and the bearing capacity of pile body is greatly improved, have quality and be easy to assurance, techno-economic effect outstanding feature.
Description of drawings
It among the figure rammed concrete stiffening cement mixing pile schematic diagram
In each accompanying drawing: 1, cement-soil, 2, concrete, 3, ram and expand hammer, 4, inner tamping tube, 5, outer pipe, 6, the caulking ring of ramming.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
As shown in the figure, rammed concrete stiffening cement mixing pile provided by the invention adopts rammed concrete in cement mixing pile stake core position, and its footpath is 600mm～800mm, and the volume ratio that concrete accounts for pile body is 1/7～1/9.
The job practices of above-mentioned rammed concrete stiffening cement mixing pile is as follows:
1) cement mixing method pile, the general cement mixer that adopts stirs in this step;
2) immersed tube equipment is in place;
3) will add neck ring, inner tamping tube 4 and be inserted in outer the rammer in the pipe 5, inside and outside rammer is managed in 4 cavitys and is filled out dry-mix concrete;
4) hammering ram outward the pipe and inner tamping tube to assigned address;
5) promote inner tamping tube 4 to outer rammer and manage 5 sky;
6) pouring into for the first time, rammer expands material;
7) put into inner tamping tube and push down concrete pavement, pull out the outer pipe that rams on then;
8) the hammering inner tamping tube goes out the coagulation earth rammer, and the inside and outside pipe that rams is sunk synchronously;
9) carry out the second time or repeatedly ram expansion according to above-mentioned construction technology;
10) extract inner tamping tube;
11) ram outward and continue in the pipe to feed intake and extract the outer pipe that rams.
The present invention adopts that cement-soil 1 is wrapped up in, rammed concrete 2 improves pile capacity as the method for inner core outward.Cement-soil 1 external diameter is 600mm～800mm, and the volume ratio that rammed concrete 2 accounts for compound pile is 1/7～1/9.From bearing mechanism, bear pile top load and pass to cement-soil by the higher rammed concrete stake core of intensity by the effect between itself and the cement-soil, further pass to foundation soil again.Cement-soil has produced effect of contraction to rammed concrete stake core in this process, has strengthened the bearing capacity of rammed concrete stake core.Therefore this structure is more reasonable, can give full play to the material property of concrete pile core and cement-soil, improves bearing capacity.Can adopt during construction and ram expand hammer 3 hammerings and ram pipe 5 and inner tamping tube 4 outward to assigned address.
Aspect construction technology, adopt traditional handicraft construction major diameter cement mixing pile earlier, then that immersed tube equipment is in place, on inside and outside stake pipe, make the controlling depth mark, so that carry out the sleeve pipe embedded depth in the construction and ram the observation of expanding the height that feeds intake.Hammering stake pipe is extracted inner tamping tube 4 out to projected depth in the stake pipe, pour into to ram to expand required concrete, rams at assigned address and expands pore-forming, and rammer expands the pore-forming number of times according to circumstances to be decided.Extract inner tamping tube after the rammer expansion finishes, ram outside and extract the outer pipe formation rammed concrete that rams after pipe feeds intake.Immersion vibrator jolt ramming should be adopted in the position near the stake top, in order to avoid this position concrete is loose.
In the above-described embodiments, expand effect in order further to strengthen on this basis to ram, strengthen and ram the structural strength that expands node, speed is 1m/min always under the usual state of cement mixer drill bit, the cement mixer bit speed is 0.5m/min when meeting with rammer expansion position, thus can be by strengthening ramming the stress concentration phenomenon that the increase of expanding position cement paste blended amount adapt to rammer expansion position.
Claims (7)
1, a kind of rammed concrete stiffening cement mixing pile is characterized in that: adopt rammed concrete in cement mixing pile stake core position, concrete peripheral parcel cement-soil.
2, rammed concrete stiffening cement mixing pile according to claim 1 is characterized in that: the stake footpath is 600mm～800mm.
3, rammed concrete stiffening cement mixing pile according to claim 1 and 2 is characterized in that: the volume ratio that concrete accounts for pile body is 1/7～1/9.
4, the job practices of the described rammed concrete stiffening cement mixing pile of a kind of claim 1 is characterized in that: comprising:
1) cement mixing method pile;
2) immersed tube equipment is in place;
3) will add neck ring, inner tamping tube and be inserted in outer the rammer in the pipe, fill out dry-mix concrete in the inside and outside rammer pipe cavity;
4) hammering ram outward the pipe and inner tamping tube to assigned address;
5) promoting inner tamping tube to outer rammer manages overhead;
6) pouring into for the first time, rammer expands material;
7) put into inner tamping tube and push down concrete pavement, pull out the outer pipe that rams on then;
8) the hammering inner tamping tube goes out the coagulation earth rammer, and the inside and outside pipe that rams is sunk synchronously;
9) carry out the second time or repeatedly ram expansion according to above-mentioned construction technology;
10) extract inner tamping tube;
11) ram outward and continue in the pipe to feed intake and extract the outer pipe that rams.
5, the job practices of rammed concrete stiffening cement mixing pile according to claim 4 is characterized in that: it is movable adding neck ring, manages same internal diameter with outer rammer.
6, according to the job practices of claim 4 or 5 described rammed concrete stiffening cement mixing piles, it is characterized in that: the concrete of filling out dry mixing in the inside and outside rammer pipe cavity is compacted in the sinking process, plays the effect of shoe.
7, according to the job practices of claim 4 or 5 described rammed concrete stiffening cement mixing piles, it is characterized in that: the cement mixer bit speed is 1m/min, ramming expansion position cement mixer bit speed is 0..5m/min, adapts to the stress concentration phenomenon of ramming the expansion position by strengthening ramming the increase of expanding position cement paste blended amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101218569A CN101397793A (en) | 2008-10-21 | 2008-10-21 | Rammed concrete stiffening cement mixing pile and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101218569A CN101397793A (en) | 2008-10-21 | 2008-10-21 | Rammed concrete stiffening cement mixing pile and construction method thereof |
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| CN101397793A true CN101397793A (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101218569A Pending CN101397793A (en) | 2008-10-21 | 2008-10-21 | Rammed concrete stiffening cement mixing pile and construction method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444120A (en) * | 2011-09-23 | 2012-05-09 | 刘献刚 | Construction method of fully-tamped multi-head pedestal bored concrete pile |
| CN103526743A (en) * | 2013-10-24 | 2014-01-22 | 华煜建设集团有限公司 | Construction method of composite foundation |
| CN103911986A (en) * | 2014-03-31 | 2014-07-09 | 福建工程学院 | Method for constructing composite repeatedly driven steel pipe piles |
| CN105484230A (en) * | 2016-01-18 | 2016-04-13 | 邓亚光 | Pile and soil concreted and integrated composite pile and construction method thereof |
| CN110230314A (en) * | 2019-04-28 | 2019-09-13 | 广东工业大学 | A kind of piling strtucture and its construction method |
-
2008
- 2008-10-21 CN CNA2008101218569A patent/CN101397793A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444120A (en) * | 2011-09-23 | 2012-05-09 | 刘献刚 | Construction method of fully-tamped multi-head pedestal bored concrete pile |
| CN103526743A (en) * | 2013-10-24 | 2014-01-22 | 华煜建设集团有限公司 | Construction method of composite foundation |
| CN103911986A (en) * | 2014-03-31 | 2014-07-09 | 福建工程学院 | Method for constructing composite repeatedly driven steel pipe piles |
| CN103911986B (en) * | 2014-03-31 | 2016-01-20 | 福建工程学院 | A kind of construction method combining strike-on steel pipe pile |
| CN105484230A (en) * | 2016-01-18 | 2016-04-13 | 邓亚光 | Pile and soil concreted and integrated composite pile and construction method thereof |
| CN110230314A (en) * | 2019-04-28 | 2019-09-13 | 广东工业大学 | A kind of piling strtucture and its construction method |
| CN110230314B (en) * | 2019-04-28 | 2024-04-26 | 广东工业大学 | Pile foundation structure and construction method thereof |
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Application publication date: 20090401 |