CN1644804A - Construction of concrete piles - Google Patents
Construction of concrete piles Download PDFInfo
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- CN1644804A CN1644804A CN 200510008716 CN200510008716A CN1644804A CN 1644804 A CN1644804 A CN 1644804A CN 200510008716 CN200510008716 CN 200510008716 CN 200510008716 A CN200510008716 A CN 200510008716A CN 1644804 A CN1644804 A CN 1644804A
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Abstract
A construction method for concrete pile includes such steps as choosing the stratum with high loading-bearing power, forming a pile hole with predefined depth, constructing a pile in the pile hole, forming several pile holes surrounding said finished pile and with the depth which is shorter than that of said finished pile but 5-6 times greater than the diameter of said finished pile, and constructing the protective piles. Its advantages are high resistance to horizontal push force and less consumption of raw materials.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the construction technology of stake.
Background technology
Along with China's development of economic construction, building projects such as bridge, overhead railway, highrise building are more and more, the supporting capacity of ground king-pile is required also more and more higher, stable for the use that improves construction work simultaneously, also more and more higher to the requirement of the anti-horizontal thrust of stake.In order to improve the anti-horizontal thrust of stake, main at present employing increases the stake footpath, increases a long method, improves the anti-horizontal thrust of stake with the bulk strength that strengthens pile body, has strengthened constructional materials consumption virtually, cause construction costs high, the construction period is longer.
According to the mechanical characteristic of stake in ground, when pile body was subjected to horizontal thrust and influences, its maximum stress point was all at the pile body place apart from 5～6 times of stakes footpaths, stake top, the place of just the easiest generation fracture.As long as strengthen, promptly strengthen the pile strength of maximum weighted point so, just improved the ability of the anti-horizontal thrust of stake naturally, therefore there is no need the integral diameter of pile body is strengthened the anti-horizontal thrust that improves stake apart from 5～6 times of pile body diameters that stake is directly located in stake top.
Summary of the invention
The present invention proposes in order to solve the above problems, purpose is to provide a kind of job practices of concrete pile, this job practices short by the stressed stake in a plurality of and center is closely linked to each other, that has strengthened stressed stake pushes up 5～6 times of pile body diameters that stake is directly located apart from stake, promptly strengthen the intensity of pile body maximum weighted point, in the anti-horizontal thrust that improves stake, reduced the integral diameter of pile body bottom, realize the saving of material, the simplification of construction.
To achieve these goals, the job practices of concrete pile of the present invention comprises the steps:
1), select better foundation soil as bearing course at pile end according to geology prospecting report and building upper load;
2) place, predetermined stake position in ground according to the stake hole of setting the microscler one-tenth prescribed depth of stake, carries out the construction of pile body, forms a complete stake;
3) be the center with above-mentioned completed stake; pile body next door at next-door neighbour's Center stake; form the stake hole of certain depth; this depth of pore forming is according to the pile body length less than first pile; and determine greater than 5～6 times of stakes mode directly of first pile; carry out the construction of pile body, form the protection stake of a rhizosphere around Center stake.
4) carry out above-mentioned steps 3 repeatedly) operation, until finishing of the protection stake of N rhizosphere around Center stake.
Best, in the job practices of above-mentioned concrete pile, above-mentioned better foundation soil is meant the intensity that can satisfy upper load and the soil layer of deformation requirements.
Best, in the job practices of above-mentioned concrete pile, above-mentioned pore-forming mode is carried out in several ways, draws hole, vibration sinking tube pore-forming, manually digging hole etc. as the hammering back-pressure with pipe pore-forming, spiral.
Best, in the job practices of above-mentioned concrete pile, the above-mentioned construction of carrying out pile body is carried out in several ways, as ram to expand at stake end filler casting reinforced concrete pile body behind the complex carrier, directly place reinforcing cage after fluid concrete, place pile for prestressed pipe, place precast concrete pile body etc.
Best, in the job practices of above-mentioned concrete pile, above-mentioned protection stake around Center stake is closely to link to each other with the pile body of Center stake.
Best, in the job practices of above-mentioned concrete pile, the above-mentioned stake footpath that centers on the protection stake of Center stake is equal to or less than the stake footpath of Center stake.
Best; in the job practices of above-mentioned concrete pile; the pile body construction of above-mentioned protection stake around Center stake is carried out in several ways, as cast-in-situ steel reinforced concrete, do not establish reinforcing bar cast-in-situ concrete, place precast concrete pile body, precast concrete pile body, dregs pile body, plain concrete pile body, cement mixing method body etc.
Best, in the job practices of above-mentioned concrete pile, above-mentioned N arrangement mode and concrete quantity around the protection stake of Center stake require to design according to upper load and horizontal thrust, generally are not less than 3.
The characteristics and the advantage of the concrete pile that forms by above method are:
1. improve the anti-horizontal thrust of stake.By carrying out a plurality of constructions around the stressed stake at the center than stub, increase apart from 5～6 times of pile body diameters that stake is directly located in stake top, promptly strengthen the intensity of pile body maximum weighted point, thereby improved the anti-horizontal thrust of stake.
2. save constructional materials.Facing under the identical anti-horizontal thrust conditional request; general stake adopts increasing pile body integral diameter to improve anti-horizontal thrust; therefore constructional materialss such as reinforcing bar, cement consume relatively large; and method of the present invention does not need to increase pile body diameter; only carry out several constructions and can obtain identical anti-horizontal thrust than short protection stake on pile body top; the pile body bottom does not need to carry out any processing or change, therefore can save a considerable amount of constructional materialss relatively.
3. job practices is various.Satisfying under the prerequisite of bearing capacity, can select various job practicess all can realize purpose of the present invention according to different geological conditionss and upper load.Can take the hammering back-pressure to draw hole, vibration sinking tube pore-forming, manually digging hole etc. as hole forming method with pipe pore-forming, spiral; and the construction of the pile body of the stressed stake in center can take stake end filler ram expand casting reinforced concrete pile body behind the complex carrier, directly place reinforcing cage after fluid concrete, place pile for prestressed pipe, place modes such as precast concrete pile body, also can take multiple job practices around the protection stake of Center stake.
Description of drawings
Fig. 1 protects a process chart of the job practices of the concrete pile of forming as one embodiment of the present of invention by 1 stressed stake in center and 3 piles.
The specific embodiment
As the job practices of the concrete pile of being made up of 3 piles of one embodiment of the present of invention, it comprises the steps, at first, as shown in Figure 1a, according to geology prospecting report and building upper load, select better foundation soil as bearing course at pile end, carrying out pore-forming behind the selected stake position on the ground; Then, shown in Fig. 1 b, form stake hole 1 according to projected depth; Then, shown in Fig. 1 c, in stake hole 1, place reinforcing cage 2, concrete perfusion 3, the stressed stake 4 in formation center; Afterwards, shown in Fig. 1 d, the stressed stake place pore-forming at the next-door neighbour center, depth of pore forming be less than the pile body length of the stressed stake in center, and greater than 5～6 times of stakes footpaths of the stressed stake in center; Then, shown in Fig. 1 e, place reinforcing cage 2, concrete perfusion 3 forms the protection stake 5 of the 1st stressed stake in center; Then, shown in Fig. 1 f, carry out the construction of above-mentioned pore-forming and pile body repeatedly, the protection stake 6,7 until forming the 2nd and the 3rd stressed stake in center finally forms concrete pile.
Claims (8)
1, a kind of job practices of concrete pile, this method comprises the steps:
1), select better foundation soil as bearing course at pile end according to geology prospecting report and building upper load;
2) place, predetermined stake position in ground according to the stake hole of setting the microscler one-tenth prescribed depth of stake, carries out the construction of pile body, forms a complete stake;
3) be the center with above-mentioned completed stake; pile body next door at next-door neighbour's Center stake; form the stake hole of certain depth; this depth of pore forming is according to the pile body length less than first pile; and determine greater than 5～6 times of stakes mode directly of first pile; carry out the construction of pile body, form the protection stake of a rhizosphere around Center stake.
4) carry out above-mentioned steps 3 repeatedly) operation, until finishing of the protection stake of N rhizosphere around Center stake.
2, the job practices of concrete pile according to claim 1 is characterized in that above-mentioned steps 1) in, above-mentioned better foundation soil is meant the intensity that can satisfy upper load and the soil layer of deformation requirements.
3, the job practices of concrete pile according to claim 1 is characterized in that above-mentioned steps 2) in, above-mentioned pore-forming mode is carried out in several ways, draws hole, vibration sinking tube pore-forming, manually digging hole etc. as the hammering back-pressure with pipe pore-forming, spiral.
4, the job practices of concrete pile according to claim 1, it is characterized in that above-mentioned steps 2) in, the above-mentioned construction of carrying out pile body is carried out in several ways, as ram to expand at stake end filler casting reinforced concrete pile body behind the complex carrier, directly place reinforcing cage after fluid concrete, place pile for prestressed pipe, place precast concrete pile body etc.
5, job practices according to claim 1 is characterized in that above-mentioned steps 3) in, above-mentioned protection stake around Center stake is closely to link to each other with the pile body of Center stake.
6, the job practices of concrete pile according to claim 1 is characterized in that above-mentioned steps 3) in, the above-mentioned stake footpath that centers on the protection stake of Center stake is equal to or less than the stake footpath of Center stake.
7, the job practices of concrete pile according to claim 1; it is characterized in that above-mentioned steps 3) in; the pile body construction of above-mentioned protection stake around Center stake is carried out in several ways, as cast-in-situ steel reinforced concrete, do not establish reinforcing bar cast-in-situ concrete, precast concrete pile body, dregs pile body, plain concrete pile body, cement mixing method body etc.
8, job practices according to claim 1 is characterized in that above-mentioned steps 4) in, above-mentioned N arrangement mode and concrete quantity around the protection stake of Center stake require to design according to upper load and horizontal thrust, generally are not less than 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510008716 CN1644804A (en) | 2005-02-24 | 2005-02-24 | Construction of concrete piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510008716 CN1644804A (en) | 2005-02-24 | 2005-02-24 | Construction of concrete piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1644804A true CN1644804A (en) | 2005-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510008716 Pending CN1644804A (en) | 2005-02-24 | 2005-02-24 | Construction of concrete piles |
Country Status (1)
| Country | Link |
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| CN (1) | CN1644804A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065608A (en) * | 2016-07-25 | 2016-11-02 | 王继忠 | A kind of premixing high strength cement soil foundation |
| CN106759301A (en) * | 2016-12-05 | 2017-05-31 | 周同和 | A kind of top expansion type cement-soil composite pile |
| CN107190763A (en) * | 2017-06-14 | 2017-09-22 | 中铁第四勘察设计院集团有限公司 | By many paxilla Shu Hecheng class large diameter pile and its construction method |
| CN110258593A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Friction pile for slope treatment |
-
2005
- 2005-02-24 CN CN 200510008716 patent/CN1644804A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065608A (en) * | 2016-07-25 | 2016-11-02 | 王继忠 | A kind of premixing high strength cement soil foundation |
| CN106759301A (en) * | 2016-12-05 | 2017-05-31 | 周同和 | A kind of top expansion type cement-soil composite pile |
| CN107190763A (en) * | 2017-06-14 | 2017-09-22 | 中铁第四勘察设计院集团有限公司 | By many paxilla Shu Hecheng class large diameter pile and its construction method |
| CN110258593A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Friction pile for slope treatment |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |