CN204151772U - A kind of rigid pile composite foundation - Google Patents
A kind of rigid pile composite foundation Download PDFInfo
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- CN204151772U CN204151772U CN201420475848.5U CN201420475848U CN204151772U CN 204151772 U CN204151772 U CN 204151772U CN 201420475848 U CN201420475848 U CN 201420475848U CN 204151772 U CN204151772 U CN 204151772U
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Abstract
This application discloses a kind of rigid pile composite foundation, comprise rigid pile and the mattress layer being layed in rigid pile top, the inserts that rigid pile comprises inner wall layer and is set in the borehole retaining wall layer outside inner wall layer and is filled in inner wall layer; Inner wall layer is tubular structure, comprises inwall cage of reinforcement and internal-wall concrete layer; Borehole retaining wall layer comprises retaining wall reinforcing bar and breast wall concrete layer.In rigid pile composite foundation in the application, rigid pile is formed tubular hollow thin-wall structure by inner wall layer and borehole retaining wall layer has certain inserts strengthening barrel stability action with inner its, under the material context using equivalent, the diameter of the hollow thin-wall structure in the utility model is larger, under the prerequisite that bearing capacity of pile meets the demands, improve the collateral resistance of Pile side soil body, material of body of a pile has been saved when same diameter, thus further improve the supporting capacity of composite foundation, and easy construction, strong adaptability, meterial saving and high efficiency.
Description
Technical field
The utility model relates to technical field of building construction, particularly a kind of rigid pile composite foundation.
Background technology
The pile-type adopted in current composite foundation 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 the bearing power increase of ground is not very large; Rigid pile comprises CFG stake (CFG stake is the abbreviation of CementFly-ash Gravel, means CFG), cement earth pile, plain concrete pile etc., is characterized in that pile strength is high, can meets the requirement of high-bearing capacity.
But existing rigid pile is solid pile, and in practical work process, the load that the centre of rigid pile is born is less, therefore, the material of solid pile can not give 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 the collateral resistance of Pile side soil body, if and there is the covering layer that deep Relative Load-bearing Capacity is lower in place designing more than the bearing stratum determined, pile body length then can be caused long, thus cause great waste, and compliance is poor.
In sum, under the prerequisite meeting requirement for bearing capacity, how effectively cost-saving, avoiding the wasting of resources, is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of rigid pile composite foundation, under the prerequisite using equivalent material, gives full play to the supporting capacity of rigid pile, meanwhile, increases the collateral resistance of Pile side soil body, thus improves the bearing capacity of composite foundation further.
For achieving the above object, the utility model provides following technical scheme:
A kind of rigid pile composite foundation, comprise rigid pile and the mattress layer being layed in described rigid pile top, described rigid pile comprises inner wall layer and is set in the borehole retaining wall layer outside described inner wall layer 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 is ground material or building waste that can be closely knit.
Preferably, in above-mentioned rigid pile composite foundation, described inwall cage of reinforcement comprises multiple inwalls that length extends along the axis direction of described rigid pile and indulges the inwall stirrup that inwall described in muscle and fixed constraint indulges muscle.
Preferably, in above-mentioned rigid pile composite foundation, the outside of muscle indulged by described inwall stirrup around being fixed on described inwall.
Preferably, in above-mentioned rigid pile composite foundation, described retaining wall reinforcing bar comprises length and indulges by the retaining wall of every meter one joint segmentation extension the retaining wall stirrup that muscle indulged by retaining wall described in muscle and fixed constraint along the axis direction of described rigid pile.
Preferably, in above-mentioned rigid pile composite foundation, described retaining wall stirrup is surrounded on the outside that muscle indulged by 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.
Compared with prior art, the beneficial effects of the utility model are:
In the rigid pile composite foundation that the utility model provides, rigid pile forms the hollow thin-wall structure of tubular by inner wall layer and borehole retaining wall layer, and it is inner that inserts is filled in described inner wall layer; 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 utility model is under the prerequisite meeting requirement for bearing capacity, equal material can be designed to larger diameter, due to the increase of diameter, just the contact area of stake and Pile side soil body is increased, thus improve the collateral resistance of Pile side soil body, effectively ensure that the bearing capacity of rigid pile, on the other hand, by filling out crushed rock filler in hollow stake holes, good drainage can be reached, ground consolidation can be accelerated to a certain extent, thus further improve Bearing Capacity of Composite Foundation.Therefore, the utility model construction cost is low, and consolidation effect is remarkable, strong adaptability, and structure is simple, and easy construction, easily promotes the use of.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or scheme of the prior art, be briefly described to describing the required accompanying drawing used in embodiment or prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of rigid pile composite foundation that Fig. 1 provides for the utility model embodiment;
The structural representation of the rigid pile of a kind of rigid pile composite foundation that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the top view of Fig. 2.
In above-mentioned Fig. 1-Fig. 3, muscle 111 indulged by rigid pile 1, borehole retaining wall layer 11, retaining wall, retaining wall stirrup 112, breast wall concrete layer 113, inner wall layer 12, inwall indulge muscle 121, inwall stirrup 122, internal-wall concrete layer 123, mattress layer 2, crushed rock filler 3.
Detailed description of the invention
Core of the present utility model there is provided a kind of rigid pile composite foundation, under the prerequisite using equivalent material, has given full play to the bearing capacity of rigid pile and the collateral resistance of Pile side soil, has effectively improve the bearing capacity of composite foundation.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Please refer to Fig. 1-Fig. 3, the structural representation of a kind of rigid pile composite foundation that Fig. 1 provides for the utility model embodiment; The structural representation of the rigid pile of a kind of rigid pile composite foundation that Fig. 2 provides for the utility model embodiment; Fig. 3 is the top view of Fig. 2.
The utility model embodiment provides a kind of rigid pile composite foundation, and comprise rigid pile 1 and mattress layer 2, 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 namely 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.The inwall cage of reinforcement many reinforcing bars compositions that to be length direction extend along rigid pile 1 axis direction, many reinforcing bars with the axle center of inner wall layer 12 for center of circle circumference is uniformly distributed.The vertical muscle of borehole retaining wall layer is that length direction extends along stake axis direction by the segmentation of every meter one joint.Concrete number of steel bars is determined according to the size of rigid pile 1 and concrete stressing conditions, and the utility model is not specifically limited.
Known by foregoing description, the rigid pile 1 of the rigid composite foundation that the utility model embodiment provides is formed the structure of tubular by inner wall layer 12 and borehole retaining wall layer 11, i.e. 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 utility model is when giving full play to pile body bearing capacity and Pile side soil collateral resistance, do not cause the waste of material, and under the material context using equivalent, hollow thin-wall rigid pile 1 in the utility model can be designed to larger diameter, due to the increase of diameter, just the contact area of rigid pile 1 outer ring and Pile side soil body is increased, thus increase the collateral resistance of Pile side soil body, effectively ensure that the vertical supporting power of rigid pile 1, then 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 to optimize rigid pile further, rigid pile 1 in the utility model embodiment also comprises the crushed rock filler 3 in the hollow area that is filled in and surrounded by inner wall layer 12, the crushed rock filler 3 of hole in-core not only increases stability and the lateral restriction of rigid pile 1 thin-walled, thus improve the bulk strength of rigid pile 1, also have draining concurrently, accelerate the effect of foundation soil consolidation, further improve the bearing capacity of composite foundation.Except adopting crushed rock filler 3, the spoir produced can also be backfilled in the hollow area of inner wall layer 12 in borehole process, eliminate 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 inwall that length extends along the axis direction of rigid pile 1 to be indulged muscle 121 and is fixedly connected with the inwall stirrup 122 of vertical internal rod 121.Concrete inwall stirrup 122 can around the outside being fixed on inwall and indulging muscle 121, and many inwalls indulge muscle 121 with the axle center of borehole retaining wall layer 11 for center of circle circumference is uniformly distributed.Multiple inwall stirrup 122 is uniformly distributed along the axis direction of rigid pile 1, and wherein the inwall number of indulging muscle 121 and inwall stirrup 122 is determined according to the size of rigid pile 1 and concrete stressing conditions, and the utility model is not specifically limited.Indulge muscle 121 due to inwall cage of reinforcement by inwall and inwall stirrup 122 forms, efficiently avoid the situation that rigid pile 1 is in use out of shape, improve the safety in utilization of rigid pile 1, extend the application life of rigid pile 1.Certainly, inwall stirrup 122 also can around the inner side being fixed on inwall and indulging muscle 121.
In order to improve the stressing conditions of rigid pile 1 further, retaining wall reinforcing bar comprises the retaining wall that length extends along the axis direction of rigid pile 1 to be indulged muscle 111 and is fixedly connected with the retaining wall stirrup 112 that muscle 111 indulged by retaining wall.Concrete, retaining wall stirrup 112 around the outside being fixed on retaining wall and indulging muscle 111, also can be surrounded on retaining wall and indulge inside muscle 111.The mounting means that retaining wall indulges muscle 111 and retaining wall stirrup 112 can indulge the mounting means of muscle 121 and inwall stirrup 122 with reference to inwall, do not repeat them here.
Be optimized mattress layer 2, the mattress layer 2 in the present embodiment is broken stone cushion layer, and certain mattress layer 2 can also be made up of dirt, slag, sandstone or plain concrete etc.In order to ensure that mattress layer 2 plays best effect, the thickness of the mattress layer 2 in the present embodiment is 20cm ~ 30cm.Mattress layer 2 is too thick, can not play the effect of rigid pile, too thin, and bearing capacity too concentrates in rigid pile 1, therefore, adopts size of the present utility model that mattress layer 2 can be made to play and acts on preferably, oil and pile is carried jointly.
The utility model embodiment provides a kind of construction method for building above-mentioned rigid pile composite foundation, comprises the following steps:
Step S1, manually digging hole, lay retaining wall reinforcing bar and formwork, then concreting by the segmentation colligation of every meter one joint, form breast wall concrete layer 113 in stake holes, 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, makes 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 is shaping, remove tubular support template, fill crushed rock filler 3 and vibration compacting in the hollow area surrounded to inner wall layer 12 afterwards, obtain rigid pile 1.
Step S5, be the broken stone cushion layer of 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 forming 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 borehole successively and build, till reaching design elevation or entering 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 the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
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) is ground material or building waste that can be closely knit.
3. rigid pile composite foundation according to claim 1, it is characterized in that, described inwall cage of reinforcement comprises multiple inwalls that length extends along the axis direction of described rigid pile (1) and indulges the inwall stirrup (122) that inwall described in muscle (121) and fixed constraint indulges muscle (121).
4. rigid pile composite foundation according to claim 3, is characterized in that, described inwall stirrup (122) indulges the outside of muscle (121) around being fixed on described inwall.
5. rigid pile composite foundation according to claim 1, it is characterized in that, described retaining wall reinforcing bar comprises length and indulges by the retaining wall of every meter one joint segmentation extension the retaining wall stirrup (112) that muscle (111) indulged by retaining wall described in muscle (111) and fixed constraint along the axis direction of described rigid pile (1).
6. rigid pile composite foundation according to claim 5, is characterized in that, described retaining wall stirrup (112) indulges the outside of muscle (111) around being fixed on described retaining wall.
7. the rigid pile composite foundation according to any one of claim 1 ~ 6, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475848.5U CN204151772U (en) | 2014-08-22 | 2014-08-22 | A kind of rigid pile composite foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475848.5U CN204151772U (en) | 2014-08-22 | 2014-08-22 | A kind of rigid pile composite foundation |
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| CN204151772U true CN204151772U (en) | 2015-02-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179166A (en) * | 2014-08-22 | 2014-12-03 | 中国建筑西南勘察设计研究院有限公司 | Rigid pile composite foundation and construction method thereof |
| CN108755652A (en) * | 2018-06-15 | 2018-11-06 | 中铁西安勘察设计研究院有限责任公司 | The basement process gauze granular media pilework of weak soil, sand foundation |
| CN113106966A (en) * | 2021-04-09 | 2021-07-13 | 上海友海建设工程有限公司 | High-bearing composite stiffness pile and construction method thereof |
-
2014
- 2014-08-22 CN CN201420475848.5U patent/CN204151772U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179166A (en) * | 2014-08-22 | 2014-12-03 | 中国建筑西南勘察设计研究院有限公司 | Rigid pile composite foundation and construction method thereof |
| CN108755652A (en) * | 2018-06-15 | 2018-11-06 | 中铁西安勘察设计研究院有限责任公司 | The basement process gauze granular media pilework of weak soil, sand foundation |
| CN113106966A (en) * | 2021-04-09 | 2021-07-13 | 上海友海建设工程有限公司 | High-bearing composite stiffness pile and construction method thereof |
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