CN104179166A - Rigid pile composite foundation and construction method thereof - Google Patents
Rigid pile composite foundation and construction method thereof Download PDFInfo
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- CN104179166A CN104179166A CN201410419134.7A CN201410419134A CN104179166A CN 104179166 A CN104179166 A CN 104179166A CN 201410419134 A CN201410419134 A CN 201410419134A CN 104179166 A CN104179166 A CN 104179166A
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- rigid pile
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Abstract
The invention discloses a rigid pile composite foundation. The rigid pile composite foundation comprises rigid piles and a cushion layer at the tops of the rigid piles. Each rigid pile comprises an inner wall layer, a perforated protection wall layer externally sleeving the inner wall layer and fillers filled in the inner wall layer; each inner wall layer is in a cylindrical structure and comprises an inner wall reinforcement cage and an inner wall concrete layer; each perforated protection wall layer comprises protection wall rebars and a protection wall concrete layer. Each rigid pile is in a cylindrical hollow thin-walled structure formed by the inner wall layer and the perforated protection wall layer, and for the main pressure bearing composite foundation, the hollow thin-walled structure is larger in diameter under the condition of equal material consumption, side resistance of soil mass on sides of the piles is improved, and bearing capability of the composite foundation is further improved. In addition, simplicity and convenience in construction, high adaptability, energy saving and high efficiency are achieved. Further, the invention discloses a construction method of the rigid pile composite foundation.
Description
Technical field
The present invention relates to technical field of building construction, particularly a kind of rigid pile composite foundation.The invention still further relates to a kind of for building the construction method of above-mentioned rigid pile composite foundation.
Background technology
The stake type adopting in composite foundation at present can be divided into two kinds substantially: granular pile and rigid pile.Wherein, granular pile comprises rotary churning pile, sand-gravel pile etc., and it is applied in composite foundation, and it is not very large that the bearing capacity of ground improves; Rigid pile comprises CFG stake (CFG stake is the abbreviation of Cement Fly-ash Gravel, means CFG), cement earth pile, plain concrete pile etc., is characterized in that pile strength is high, can meet the requirement of high-bearing capacity.
But existing rigid pile is solid pile, and in practical work process, the load that bear in the centre of rigid pile is less, therefore, the material of solid pile can not be given full play to its effect, cause certain waste of material, and the stake footpath of rigid pile is all less, can not make full use of a collateral resistance for the side soil body, if and there is the covering layer that deep Relative Load-bearing Capacity is lower in place more than the definite bearing stratum of design, can cause pile body length long, thereby cause great waste, and compliance is poor.
In sum, under the prerequisite that meets requirement for bearing capacity, how effectively cost-saving, avoid the wasting of resources, be those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of rigid pile composite foundation, using under the prerequisite of equivalent material, give full play to the supporting capacity of rigid pile, meanwhile, increase the collateral resistance of the stake side soil body, thereby further improve the bearing capacity of composite foundation.
Another object of the present invention is to provide a kind of for building the construction method of above-mentioned rigid pile composite foundation.
For achieving the above object, the invention provides following technical scheme:
A kind of rigid pile composite foundation, comprises rigid pile and the mattress layer that is layed in described rigid pile top, and described rigid pile comprises inner wall layer and is set in the borehole retaining wall layer in described inner wall layer outside and is filled in the inserts of described inner wall layer inside; Described inner wall layer is tubular structure; Described inner wall layer comprises inwall cage of reinforcement and internal-wall concrete layer; Described borehole retaining wall layer comprises retaining wall reinforcing bar and breast wall concrete layer.
Preferably, in above-mentioned rigid pile composite foundation, described inserts be can be closely knit ground material or building waste.
Preferably, in above-mentioned rigid pile composite foundation, described inwall cage of reinforcement comprises the inwall stirrup of the vertical muscle of inwall described in the vertical muscle of multiple inwalls that length is extended along the axis direction of described rigid pile and fixed constraint.
Preferably, in above-mentioned rigid pile composite foundation, described inwall stirrup is around the outside of being fixed on the vertical muscle of described inwall.
Preferably, in above-mentioned rigid pile composite foundation, described retaining wall reinforcing bar comprises the retaining wall stirrup of the vertical muscle of retaining wall described in the vertical muscle of retaining wall that length is extended by the segmentation of every meter one joint along the axis direction of described rigid pile and fixed constraint.
Preferably, in above-mentioned rigid pile composite foundation, described retaining wall stirrup is surrounded on the outside of the vertical muscle of described retaining wall.
Preferably, in above-mentioned rigid pile composite foundation, described mattress layer is broken stone cushion layer.
Preferably, in above-mentioned rigid pile composite foundation, the thickness of described mattress layer is 20cm～30cm.
The present invention also provides a kind of construction method of rigid pile composite foundation, comprises the following steps:
S1, manually digging hole also complete borehole retaining wall layer, until design elevation or enter bearing stratum;
S2, load inwall cage of reinforcement at the inner ring of borehole retaining wall layer, and install tubular support template in the inner side of inwall cage of reinforcement;
S3, between described borehole retaining wall layer and described tubular support template, build internal-wall concrete layer, form inner wall layer;
S4, after inner wall layer moulding, remove tubular support template, in the hollow area surrounding to inner wall layer afterwards, fill rubble vibration compacting, form rigid pile;
S5, the broken stone cushion layer that is 20cm～30cm at rigid pile top laying depth, form rigid pile composite foundation.
Preferably, in the construction method of above-mentioned rigid pile composite foundation, the manually digging hole in described step S1 the operation that forms borehole retaining wall layer adopt from top to bottom by every meter one joint segmentation borehole and build the method for moulding.
Compared with prior art, the invention has the beneficial effects as follows:
In rigid pile composite foundation provided by the invention, rigid pile is formed the hollow thin-wall structure of tubular by inner wall layer and borehole retaining wall layer, and inserts is filled in described inner wall layer inside; Inner wall layer is made up of inwall cage of reinforcement and internal-wall concrete layer, and borehole retaining wall layer is made up of retaining wall reinforcing bar and breast wall concrete layer.Thin-walled rubble core stake in the present invention is under the prerequisite that meets requirement for bearing capacity, equal material can be designed to larger diameter, due to the increase of diameter, just increase the contact area of stake with the stake side soil body, thereby improved the collateral resistance of the stake side soil body, effectively ensure the bearing capacity of rigid pile, on the other hand, by fill out rubble filler in hollow pile hole, can reach good drainage, can accelerate to a certain extent ground consolidation, thereby further improve Bearing Capacity of Composite Foundation.Therefore, construction cost of the present invention is low, and consolidation effect is remarkable, and strong adaptability is simple in structure, and easy construction is easily promoted the use of.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or scheme of the prior art, to accompanying drawing that describe required use in embodiment or prior art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of rigid pile composite foundation that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the rigid pile of a kind of rigid pile composite foundation that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the top view of Fig. 2.
In above-mentioned Fig. 1-Fig. 3, rigid pile 1, borehole retaining wall layer 11, the vertical muscle 111 of retaining wall, retaining wall stirrup 112, breast wall concrete layer 113, inner wall layer 12, the vertical muscle 121 of inwall, inwall stirrup 122, internal-wall concrete layer 123, mattress layer 2, rubble filler 3.
Detailed description of the invention
Core of the present invention has been to provide a kind of rigid pile composite foundation, is using under the prerequisite of equivalent material, has given full play to the bearing capacity of rigid pile and the collateral resistance of stake side soil, has effectively improved the bearing capacity of composite foundation.
It is a kind of for building the construction method of above-mentioned rigid pile composite foundation that the present invention also provides.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on embodiments of the invention, all other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope of protection of the invention.
Please refer to Fig. 1-Fig. 3, the structural representation of a kind of rigid pile composite foundation that Fig. 1 provides for the embodiment of the present invention; The structural representation of the rigid pile of a kind of rigid pile composite foundation that Fig. 2 provides for the embodiment of the present invention; Fig. 3 is the top view of Fig. 2.
The embodiment of the present invention provides a kind of rigid pile composite foundation, comprises rigid pile 1 and mattress layer 2, and mattress layer 2 is layed in the top of rigid pile 1; Wherein, rigid pile 1 comprises inner wall layer 12 and borehole retaining wall layer 11, and borehole retaining wall layer 11 is set in the outside of inner wall layer 12, and inner wall layer 12 is tubular structure, and rigid pile 1 is hollow thin-wall column structure; Inner wall layer 12 comprises inwall cage of reinforcement internal-wall concrete layer 123, and borehole retaining wall layer 11 comprises retaining wall reinforcing bar and breast wall concrete layer 113.Inwall cage of reinforcement is the many reinforcing bar compositions that length direction extends along rigid pile 1 axis direction, and many reinforcing bars are circumferentially uniformly distributed as the center of circle taking the axle center of inner wall layer 12.The vertical muscle of borehole retaining wall layer is that length direction extends by the segmentation of every meter one joint along stake axis direction.Concrete number of steel bars is determined according to the big or small and concrete stressing conditions of rigid pile 1, and the present invention is not specifically limited.
Known by foregoing description, the rigid pile 1 of the rigid composite foundation that the embodiment of the present invention provides is formed the structure of tubular by inner wall layer 12 and borehole retaining wall layer 11, it is hollow thin-wall structure, inner wall layer 12 is made up of inwall cage of reinforcement and internal-wall concrete layer 123, borehole retaining wall layer 11 is made up of retaining wall reinforcing bar and breast wall concrete layer 113, the present invention is in the situation that giving full play to pile body bearing capacity and stake side side resistance of soil, do not cause the waste of material, and using in the material situation of equivalent, hollow thin-wall rigid pile 1 in the present invention can be designed to larger diameter, due to the increase of diameter, just increased the contact area of rigid pile 1 outer ring with the stake side soil body, thereby increase the collateral resistance of the stake side soil body, effectively ensure the vertical supporting power of rigid pile 1, the length of rigid pile 1 might not reach the bearing stratum of design, therefore, greatly save material usage, effectively reduce construction cost.
In order further to optimize rigid pile, rigid pile 1 in the embodiment of the present invention also comprises the rubble filler 3 being filled in the hollow area being surrounded by inner wall layer 12, the rubble filler 3 of hole in-core has not only strengthened stability and the lateral restriction of rigid pile 1 thin-walled, thereby improve the bulk strength of rigid pile 1, also have draining concurrently, accelerate the fixed effect of foundation soil, further improved the bearing capacity of composite foundation.Except adopting rubble filler 3, the spoir producing in borehole process can also be backfilled in the hollow area of inner wall layer 12, save the cost of spoir outward transport.
In order to improve the stressing conditions of rigid pile 1, the inwall cage of reinforcement in the present embodiment comprises the vertical muscle 121 of inwall that length is extended along the axis direction of rigid pile 1 and the inwall stirrup 122 that is fixedly connected with vertical internal rod 121.Concrete inwall stirrup 122 can be around the outside of being fixed on the vertical muscle 121 of inwall, and the many vertical muscle 121 of inwall are circumferentially uniformly distributed as the center of circle taking the axle center of borehole retaining wall layer 11.Multiple inwall stirrups 122 are uniformly distributed along the axis direction of rigid pile 1, and wherein the number of the vertical muscle 121 of inwall and inwall stirrup 122 is determined according to the big or small and concrete stressing conditions of rigid pile 1, and the present invention is not specifically limited.Because inwall cage of reinforcement is made up of the vertical muscle 121 of inwall and inwall stirrup 122, the situation of effectively having avoided rigid pile 1 to be in use out of shape, has improved the safety in utilization of rigid pile 1, has extended the application life of rigid pile 1.Certainly, inwall stirrup 122 also can be around the inner side of being fixed on the vertical muscle 121 of inwall.
In order further to improve the stressing conditions of rigid pile 1, retaining wall reinforcing bar comprises the vertical muscle 111 of retaining wall that length is extended along the axis direction of rigid pile 1 and the retaining wall stirrup 112 that is fixedly connected with the vertical muscle 111 of retaining wall.Concrete, retaining wall stirrup 112 can be around the outside of being fixed on the vertical muscle 111 of retaining wall, also can be surrounded on the vertical muscle of retaining wall 111 inner sides.The mounting means of the vertical muscle 111 of retaining wall and retaining wall stirrup 112 can, with reference to the mounting means of the vertical muscle 121 of inwall and inwall stirrup 122, not repeat them here.
Mattress layer 2 is optimized, and the mattress layer 2 in the present embodiment is broken stone cushion layer, and mattress layer 2 can also be made up of dirt, slag, sandstone or plain concrete etc. certainly.In order to ensure that mattress layer 2 brings into play best effect, the thickness of the mattress layer 2 in the present embodiment is 20cm～30cm.The too thick effect that can not bring into play rigid pile of mattress layer 2, too thin bearing capacity too concentrates in rigid pile 1, therefore, adopts size of the present invention can make mattress layer 2 bring into play effect preferably, makes the common carrying of stake and soil.
It is a kind of for building the construction method of above-mentioned rigid pile composite foundation that the embodiment of the present invention provides, and comprises the following steps:
Step S1, manually digging hole are laid retaining wall reinforcing bar formwork by the segmentation colligation of every meter one joint in stake hole, and then concreting, forms breast wall concrete layer 113, until design elevation or enter bearing stratum certain depth completes borehole retaining wall layer 11.
Step S2, after borehole retaining wall layer 11 is fixed-type, make inwall cage of reinforcement, and transferred to the inner ring of borehole retaining wall layer 11, and install tubular support template in the inner side of inwall cage of reinforcement.
Step S3, between borehole retaining wall layer 11 and tubular support template, build internal-wall concrete layer 123, reach design elevation, obtain inner wall layer 12.
Step S4, after inner wall layer 12 moulding, remove tubular support template, in the hollow area surrounding to inner wall layer 12 afterwards, fill rubble filler 3 vibration compacting, obtain rigid pile 1.
Step S5, the broken stone cushion layer that is 20 cm～30cm at rigid pile 1 top laying depth, obtain rigid pile composite foundation.
Manually digging hole in step S1 in the present embodiment the operation that forms borehole retaining wall layer 11 adopt from top to bottom by every meter one joint segmentation borehole and the method for building, down carry out successively borehole and build, until reach design elevation or enter bearing stratum certain depth.
In this manual, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a rigid pile composite foundation, comprise rigid pile (1) and be layed in the mattress layer (2) at described rigid pile (1) top, it is characterized in that, described rigid pile (1) comprises inner wall layer (12) and is set in the borehole retaining wall layer (11) in described inner wall layer (12) outside and is filled in the inner inserts (13) of described inner wall layer (12); Described inner wall layer (12) is tubular structure; Described inner wall layer (12) comprises inwall cage of reinforcement and internal-wall concrete layer (123); Described borehole retaining wall layer (11) comprises retaining wall reinforcing bar and breast wall concrete layer (113).
2. rigid pile composite foundation according to claim 1, is characterized in that, described inserts (13) be can be closely knit ground material or building waste.
3. rigid pile composite foundation according to claim 1, it is characterized in that, described inwall cage of reinforcement comprises that inwall described in the vertical muscle (121) of multiple inwalls that length is extended along the axis direction of described rigid pile (1) and fixed constraint indulges the inwall stirrup (122) of muscle (121).
4. rigid pile composite foundation according to claim 3, is characterized in that, described inwall stirrup (122) is around the outside of being fixed on the vertical muscle (121) of described inwall.
5. rigid pile composite foundation according to claim 1, it is characterized in that, described retaining wall reinforcing bar comprises the retaining wall stirrup (112) of the vertical muscle (111) of retaining wall described in the vertical muscle (111) of retaining wall that length is extended by the segmentation of every meter one joint along the axis direction of described rigid pile (1) and fixed constraint.
6. rigid pile composite foundation according to claim 5, is characterized in that, described retaining wall stirrup (112) is around the outside of being fixed on the vertical muscle (111) of described retaining wall.
7. according to the rigid pile composite foundation described in claim 1～6 any one, it is characterized in that, described mattress layer (2) is broken stone cushion layer.
8. rigid pile composite foundation according to claim 7, is characterized in that, the thickness of described mattress layer (2) is 20cm～30cm.
9. a construction method for rigid pile composite foundation, for building the rigid pile composite foundation as described in claim 1-8 any one, is characterized in that, comprises the following steps:
S1, manually digging hole also complete borehole retaining wall layer (11), until design elevation or enter bearing stratum;
S2, load inwall cage of reinforcement at the inner ring of borehole retaining wall layer (11), and install tubular support template in the inner side of inwall cage of reinforcement;
S3, between described borehole retaining wall layer (11) and described tubular support template, build internal-wall concrete layer (123), form inner wall layer (12);
S4, after inner wall layer (12) moulding, remove tubular support template, in the hollow area surrounding to inner wall layer (12) afterwards, fill rubble vibration compacting, form rigid pile (1);
S5, the broken stone cushion layer that is 20cm～30cm at rigid pile (1) top laying depth, form rigid pile composite foundation.
10. the construction method of rigid pile composite foundation according to claim 9, is characterized in that, the manually digging hole in described step S1 the operation that forms borehole retaining wall layer adopt from top to bottom by every meter one joint segmentation borehole and build the method for moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419134.7A CN104179166A (en) | 2014-08-22 | 2014-08-22 | Rigid pile composite foundation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419134.7A CN104179166A (en) | 2014-08-22 | 2014-08-22 | Rigid pile composite foundation and construction method thereof |
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| CN104179166A true CN104179166A (en) | 2014-12-03 |
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| CN201410419134.7A Pending CN104179166A (en) | 2014-08-22 | 2014-08-22 | Rigid pile composite foundation and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155505A (en) * | 2015-08-21 | 2015-12-16 | 四川九鼎智远知识产权运营有限公司 | Construction method for rigid pile composite foundation |
| CN107881878A (en) * | 2017-11-30 | 2018-04-06 | 王传兰 | A kind of metalling skeleton filling device built for highway and its application method |
| CN109577307A (en) * | 2019-01-10 | 2019-04-05 | 上海市市政规划设计研究院有限公司 | Combination of rigidity and flexibility stake and its construction method |
| CN110670579A (en) * | 2019-04-17 | 2020-01-10 | 柳红滨 | Hoop pile for pile foundation engineering and foundation treatment and construction process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155505A (en) * | 2015-08-21 | 2015-12-16 | 四川九鼎智远知识产权运营有限公司 | Construction method for rigid pile composite foundation |
| CN107881878A (en) * | 2017-11-30 | 2018-04-06 | 王传兰 | A kind of metalling skeleton filling device built for highway and its application method |
| CN109577307A (en) * | 2019-01-10 | 2019-04-05 | 上海市市政规划设计研究院有限公司 | Combination of rigidity and flexibility stake and its construction method |
| CN110670579A (en) * | 2019-04-17 | 2020-01-10 | 柳红滨 | Hoop pile for pile foundation engineering and foundation treatment and construction process thereof |
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Application publication date: 20141203 |
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