CN201056691Y - Static pressure cloven-footed pile with compound carrier - Google Patents
Static pressure cloven-footed pile with compound carrier Download PDFInfo
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- CN201056691Y CN201056691Y CNU2007200912154U CN200720091215U CN201056691Y CN 201056691 Y CN201056691 Y CN 201056691Y CN U2007200912154 U CNU2007200912154 U CN U2007200912154U CN 200720091215 U CN200720091215 U CN 200720091215U CN 201056691 Y CN201056691 Y CN 201056691Y
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Abstract
A combined-carrier static-pressure expanded bore pile includes a pile body and a pile tip enlargement head. A combined carrier formed by a plain concrete layer, a reinforcement cement lime-sand mortar mixing layer and a mixing layer of the reinforcement and reinforced soil layer are arranged in turn on the bottom of the pile tip enlargement head on the lower end of the pile body. The pile end enlargement head, formed by concrete with the same labeling of the pile body, is pear-shaped and has a diameter 1.5-3 times as large as that of the pile body or is determined by 0.3-0.5m<3> of the filling concrete amount. The utility model has the advantages of cost-effectiveness, environment-friendliness, safety, low cost, good bearing capacity, no pollution or noise during construction and compliance with the requirements of market development.
Description
Technical field
The utility model relates to construction work pile foundation field, specifically a kind of compound support static-pressure expanding bottom pile.
Background technology
Pile foundation is adopted in construction work mostly, and along with the development in city, highrise building is more and more, needs the pile foundation that can bear bigger load, and pile foundation develops to high-bearing for this reason, gives system stake etc. thereby produced compaction pile, complex carrier stake, static pressure.Though the complex carrier compaction pile has higher capacity and lower cost, but it is the way that adopts tension weight churning immersed tube pile, exist following shortcoming: one, vibration and the noise in the construction is bigger, is not suitable for constructing near resident's concentration zones and the building to vibration sensing.Two, strong wallop will make the reinforced material pulverizing of inserting and even become the effect that powder has lost aggregate.Three,, be difficult to pile when particularly the sand pebble layer water yield is enriched in the rich groundwater area.Four, single pile bearing capacity is by being that three grades of amounts of pouring into are controlled in the construction, influenced greatly by human factor, causes that easily the people is that cause inhomogeneous reaches inhomogeneous to single pile bearing capacity, stays hidden danger to engineering.Five, a stake end complex carrier combines poorly with the pile body junction, has reduced an anti-Its ultimate bearing capacity.
It is higher that static pressure gives system stake single pile bearing, noiselessness, pollution-free, it is a kind of environment-friendly type worker's method, it is loaded down with trivial details that but it exists pile extension, cuts the shortcoming of stake waste, and static pressure gives the system stake and can not carry out darker reinforcing to the pile end groundwork soil layer in addition, be difficult to give full play to the bearing capacity of stake end soil, and be difficult to improve bearing capacity of pile tip by adding timber pile end loaded area, make that giving the system stake can only so just cause certain waste to major diameter, the development of timber pile length direction.
Summary of the invention
The purpose of this utility model is, the deficiency that is intended to solve the problems of the technologies described above, overcome the shortcoming of above-mentioned two kinds of stakes, with solve urban development build in to the needs of high-bearing, low cost, pollution-free, noiselessness, environment-friendly type stake, invent a kind of compound support static-pressure expanding bottom pile, and adopt the static pressure expansion technical method at the end, realize the effect of economy, saving, environmental protection, safety.
The utility model is the deficiency that solves the problems of the technologies described above, the technical scheme that is adopted is: a kind of compound support static-pressure expanding bottom pile, comprise pile body, stake end enlarged footing, in the bottom that enlarged footing is held in the stake of pile body lower end, be provided with the complex carrier that plain concrete layer, reinforced material cement sand-lime mixed layer and reinforced material and reinforcing soil layer mixed layer are formed successively.
Stake end enlarged footing described in the utility model is the pears type, and the diameter of stake end enlarged footing is that the 1.5-3 of pile body diameter is doubly or by the 0.3-0.5m that inserts the concrete amount
3Size is determined, by forming with the label concrete with pile body.
Plain concrete layer described in the utility model, reinforced material cement sand-lime mixed layer and reinforced material and reinforcing soil layer mixed layer are formed complex carrier, and its materials comprise wherein one or more of building waste, brick slag, fragment of brick, concrete piece, sandy gravel, rubble.
The complex carrier that plain concrete layer described in the utility model, reinforced material cement sand-lime mixed layer and reinforced material and reinforcing soil layer mixed layer are formed, it uses the consumption of building waste to be not less than 0.5m
3
The utility model adopts following job practices and step:
1, give fixed stake position place in ground and dig and draw the hole, the aperture is with the stake footpath, hole depth 0, and 5m, this step is in order to guarantee that deviation does not take place in the stake position, if foundation soil is hard or have interlayer, immersed tube to sink at need, draws hole depth and can strengthen, sinking to projected depth to guarantee immersed tube;
2, in drawing the hole, insert the high dry concrete of 0.2-0.3m, to reach the effect that the back cover sealing ends mud;
3, static pressure, immersed tube and enlarged pile-forming machine perching is put into immersed tube and is drawn the hole, and static(al) is pressed into foundation soil with immersed tube;
4, after immersed tube is drowned into projected depth, pipe in proposing, in outer tube, insert reinforced material, as fragment of brick, concrete block, cobble, rubble etc., put into pipe, static(al) extrudes outer tube, pressure pile end foundation soil with filling out reinforced material, till filler static pressure to stake held soil layer by densification so repeatedly, the reinforced material amount was 0.5-1.5m
3, the determining of its densification degree: after treating that the certain and static pressure force value of amount of filler reaches 1.5 times of bearing capacity of single pile standard values, when filler is difficult to be pressed into, keep voltage stabilizing, during value that the voltage stabilizing sedimentation is determined less than design or test pile, enter next step, otherwise continue filler to meeting the demands, if filler surpasses 1.5m
3, when the voltage stabilizing sedimentation still can not be satisfied, should in next step construction, adjust, adjust the increase of one deck amount of filler under comprising and the increase of stake end enlarged footing area;
5, propose in pipe, in outer tube, insert reinforced material and cement sand-lime mixture, put into pipe, pipe extrudes outer tube with filling out thing in the static pressure, carry out so repeatedly, interbed among the formation complex carrier, i.e. reinforced material and cement sand-lime mixed layer, amount of filler is 0.3-1.0m
3, need to prove, when amount of filler is big in the step 2, get big value, hour get the small value;
6, propose interior pipe and insert low-grade plain concrete to outer tube, concrete amount 0.1-0.3m
3, static pressure carries out so repeatedly, forms the upper strata of complex carrier, promptly plain concrete layer;
7, propose interior pipe, insert the dry concrete to outer tube, put into pipe, rise and pull out outer tube, pipe and outer tube are to original position in the static pressure, and this is a companding, carries out repeatedly companding so repeatedly, thus the stake end enlarged footing of formation different-diameter;
But according to stake end enlarged footing sectional area one or many companding.
Enlarged footing sectional area formula is
Once ram and expand
Secondary rams and expands
Ram for n time and expand
D1, D2, Dn-for the first time, for the second time, the n time companding major part average diameter.
The Do-outer tube diameter.
H1, h2, hn-for the second time, pour into concrete height (starting at) for the first time at the bottom of stake in the n time companding operation middle external tube.
H1, h2, h3-for the first time, for the second time, degree of lifting (at the bottom of stake, starting at) desirable H1/2, H2/2, Hn/2 on the n time companding operation middle external tube
C1, C2, Cn-for the first time for the second time, sink down into the desirable C1=C2=Cn=0.2m of distance at the bottom of stake by outer tube in the n time companding operation synchronously.
8, after companding is finished, adopt 2 times of bearing capacity of single pile standard value static pressure inner and outer pipes, the static pressure sedimentation meets the demands and enters next step operation, if can not satisfy, repeats 7,8 step;
This step is promptly checked single pile bearing capacity in construction, thereby has guaranteed the supporting capacity of every pile.
9, propose interior pipe and in outer tube, be lowered to reinforcing cage, the perfusion concrete piles, the concrete height will guarantee that after outer tube was extracted, concrete face absolute altitude was higher than the design stake and rises 0.5m;
10, put into pipe and make it to be pressed on the concrete face of being irritated, rise and to pull out outer tube to inner and outer pipes and all extract ground, this pile driving construction is finished.Interior pipe is pressed on the concrete face, thereby has guaranteed the continuous and density of concrete piles, has guaranteed pile body weight.
The utility model has the advantages that;
1, pile body is rational in infrastructure, and bearing capacity of single pile increases substantially, and bearing capacity of single pile can reach 1000-3000KN.
2, economy.The folk prescription concrete provides bearing capacity to reach 700-1500KN, and the about 30-50% of investment is saved on the basis.
3, can consume noiselessness, friction in a large amount of building wastes and the construction, be the environment-friendly type stake.
4, single pile bearing capacity can carry out root root check in work progress, and checks simple and clearly, makes pile foundation more safe and reliable.
5, it is more comprehensive to make that test pile detects, and can detect the bearing capacity that the stake end is reinforced the back soil body, can detect bearing capacity of single pile again, and can be according to the timely plan for adjustment of testing result, make design scheme more safe and reliable, utilize the deadweight and the counterweight of Static pressure pile driver during detection, can save testing cost.
6, utilize static pressure to guarantee the structure of aggregate, make it really play the effect that strengthens body.
The way of 7, use the concrete sealing, ending mud has been eliminated the influence of underground water to construction, makes the complex carrier stake in the rich groundwater area, and particularly the sand pebble layer area is used and come true.
8, reinforcing cage can be lowered in the stake end enlarged footing, makes foundation structure more reasonable.
The utility model economy, saving, environmental protection, safety, cost is low, and bearing capacity is strong, and pollution-free in the construction, noiselessness meet the demand of market development.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Mark among the figure: 1, pile body; 2, stake end enlarged footing; 3, plain concrete layer; 4, reinforced material cement sand-lime mixed layer; 5, reinforced material and reinforcing soil layer mixed layer.
The specific embodiment
As shown in Figure 1, a kind of compound support static-pressure expanding bottom pile, by pile body 1 and stake end enlarged footing 2 and meet carrier and form, meeting carrier is formed by plain concrete layer 3, reinforced material cement sand-lime mixed layer 4, reinforced material and reinforcing soil layer mixed layer 5, the bottom is reinforced material and the compacted complex carrier that forms of soil mass consolidation static pressure companding, be the stake end enlarged footing 2 that the static pressure companding forms on the carrier, top is the pile body that forms of concrete pouring or gives the system pile body.Stake end enlarged footing 2 is to realize by the compacted way of static(al) companding with reinforced material and dry concrete, and the size of stake end enlarged footing 2 is to control by the concrete amount of inserting, and the general amount of inserting is 0.3-0.5m
3, the diameter of stake end enlarged footing 2 is 1.5-3 times of pile body diameter, the shape of stake end enlarged footing 2 is the pears type.Because complex carrier is formed by plain concrete layer 3, reinforced material cement sand-lime mixed layer 4, reinforced material and reinforcing soil layer mixed layer 5, its materials are building waste, brick slag, fragment of brick, concrete piece, sandy gravel, rubble etc., and the consumption of building waste generally is not less than 0.5m
3, protuberance does not take place is principle to maximum consumption not influence adjacent stake and ground.
Its specific implementation method is:
1, give fixed stake position place in ground and dig and draw the hole, the aperture is with the stake footpath, hole depth 0, and 5m, this step is in order to guarantee that deviation does not take place in the stake position, if foundation soil is hard or have interlayer, immersed tube to sink at need, draws hole depth and can strengthen, sinking to projected depth to guarantee immersed tube;
2, in drawing the hole, insert the high dry concrete of 0.2-0.3m, to reach the effect that the back cover sealing ends mud;
3, static pressure, immersed tube and enlarged pile-forming machine perching is put into immersed tube and is drawn the hole, and static(al) is pressed into foundation soil with immersed tube;
4, after immersed tube is drowned into projected depth, pipe in proposing, in outer tube, insert reinforced material, as fragment of brick, concrete block, cobble, rubble etc., put into pipe, static(al) extrudes outer tube, pressure pile end foundation soil with filling out reinforced material, till filler static pressure to stake held soil layer by densification so repeatedly, the reinforced material amount was 0.5-1.5m
3, the determining of its densification degree: after treating that the certain and static pressure force value of amount of filler reaches 1.5 times of bearing capacity of single pile standard values, when filler is difficult to be pressed into, keep voltage stabilizing, during value that the voltage stabilizing sedimentation is determined less than design or test pile, enter next step, otherwise continue filler to meeting the demands, if filler surpasses 1.5m
3, when the voltage stabilizing sedimentation still can not be satisfied, should in next step construction, adjust, adjust the increase of one deck amount of filler under comprising and the increase of stake end enlarged footing area;
5, propose in pipe, in outer tube, insert reinforced material and cement sand-lime mixture, put into pipe, pipe extrudes outer tube with filling out thing in the static pressure, carry out so repeatedly, interbed among the formation complex carrier, i.e. reinforced material and cement sand-lime mixed layer 4, amount of filler is 0.3-1.0m
3, need to prove, when amount of filler is big in the step 2, get big value, hour get the small value;
6, propose interior pipe and insert low-grade plain concrete to outer tube, concrete amount 0.1-0.3m
3, static pressure carries out so repeatedly, forms the upper strata of complex carrier, promptly plain concrete layer 3;
7, propose interior pipe, insert the dry concrete to outer tube, put into pipe, rise and pull out outer tube, pipe and outer tube are to original position in the static pressure, and this is a companding, carries out repeatedly companding so repeatedly, thus the stake end enlarged footing 2 of formation different-diameter;
But according to stake end enlarged footing 2 sectional area one or many compandings.
8, after companding is finished, adopt 2 times of bearing capacity of single pile standard value static pressure inner and outer pipes, the static pressure sedimentation meets the demands and enters next step operation, if can not satisfy, repeats 7,8 step;
This step is promptly checked single pile bearing capacity in construction, thereby has guaranteed the supporting capacity of every pile.
9, propose interior pipe and in outer tube, be lowered to reinforcing cage, the perfusion concrete piles, the concrete height will guarantee that after outer tube was extracted, concrete face absolute altitude was higher than the design stake and rises 0.5m;
10, put into pipe and make it to be pressed on the concrete face of being irritated, rise and to pull out outer tube to inner and outer pipes and all extract ground, this pile driving construction is finished.Interior pipe is pressed on the concrete face, thereby has guaranteed the continuous and density of concrete piles, has guaranteed pile body weight.
Claims (4)
1. compound support static-pressure expanding bottom pile, comprise pile body (1), stake end enlarged footing (2), it is characterized in that:, be provided with plain concrete layer (3), reinforced material cement sand-lime mixed layer (4) and reinforced material successively and reinforce the complex carrier that soil layer mixed layer (5) is formed in the bottom that enlarged footing (2) is held in the stake of pile body (1) lower end.
2. a kind of compound support static-pressure expanding bottom pile according to claim 1 is characterized in that: described stake end enlarged footing (2) is the pears type, and the diameter of stake end enlarged footing (2) is that the 1.5-3 of pile body diameter is doubly or by the 0.3-0.5m that inserts the concrete amount
3Size is determined.
3. a kind of compound support static-pressure expanding bottom pile according to claim 1, it is characterized in that: described plain concrete layer (3), reinforced material cement sand-lime mixed layer (4) and reinforced material and reinforce soil layer mixed layer (5) and form complex carrier, its materials comprise wherein one or more of building waste, brick slag, fragment of brick, concrete piece, sandy gravel, rubble.
4. a kind of compound support static-pressure expanding bottom pile according to claim 1, it is characterized in that: the complex carrier that described plain concrete layer (3), reinforced material cement sand-lime mixed layer (4) and reinforced material and reinforcing soil layer mixed layer (5) are formed, it uses the consumption of building waste to be not less than 0.5m
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200912154U CN201056691Y (en) | 2007-07-17 | 2007-07-17 | Static pressure cloven-footed pile with compound carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200912154U CN201056691Y (en) | 2007-07-17 | 2007-07-17 | Static pressure cloven-footed pile with compound carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201056691Y true CN201056691Y (en) | 2008-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200912154U Expired - Fee Related CN201056691Y (en) | 2007-07-17 | 2007-07-17 | Static pressure cloven-footed pile with compound carrier |
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| Country | Link |
|---|---|
| CN (1) | CN201056691Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046529A (en) * | 2012-12-31 | 2013-04-17 | 中国建筑西南勘察设计研究院有限公司 | Rammed hard plain concrete pile composite foundation |
| CN114541373A (en) * | 2021-11-02 | 2022-05-27 | 北京波森特岩土工程有限公司 | Construction method of concrete pile |
| CN115852932A (en) * | 2023-02-13 | 2023-03-28 | 石家庄铁道大学 | Construction method of carrier pile |
-
2007
- 2007-07-17 CN CNU2007200912154U patent/CN201056691Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046529A (en) * | 2012-12-31 | 2013-04-17 | 中国建筑西南勘察设计研究院有限公司 | Rammed hard plain concrete pile composite foundation |
| CN114541373A (en) * | 2021-11-02 | 2022-05-27 | 北京波森特岩土工程有限公司 | Construction method of concrete pile |
| CN115852932A (en) * | 2023-02-13 | 2023-03-28 | 石家庄铁道大学 | Construction method of carrier pile |
| CN115852932B (en) * | 2023-02-13 | 2024-02-23 | 北京波森特岩土工程有限公司 | Construction method of carrier pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 |