CN103821160A - Soft soil foundation combined pile net structure - Google Patents
Soft soil foundation combined pile net structure Download PDFInfo
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- CN103821160A CN103821160A CN201410042402.8A CN201410042402A CN103821160A CN 103821160 A CN103821160 A CN 103821160A CN 201410042402 A CN201410042402 A CN 201410042402A CN 103821160 A CN103821160 A CN 103821160A
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Abstract
The invention discloses a soft soil foundation combined pile net structure, aims at effectively improving reinforcing effect and saving project investment and comprises cast-in-place piles, pressed piles, pile caps, guide fixing frame lattices and a cushion body. The cast-in-place piles are arranged around the boundary of a filling body at intervals, bottoms of the cast-in-place piles enter a bedrock layer below a soft soil layer by certain depth, the pressed piles are arranged in the soft soil layer within a range of the cast-in-place piles at intervals, bottoms of the pressed piles are pressed in the top surface of the bedrock layer, the pile caps are arranged at the tops of the cast-in-placed piles and the pressed piles and fixedly connected with the cast-in-placed piles and the pressed piles, the guide fixing frame lattices are positioned in the soft soil layer and transversely restrain the cast-in-place piles and the pressed piles, and the cushion body is laid between the tops of the piles caps and the undersurface of the filling body.
Description
Technical field
The present invention relates to civil engineering, particularly on Rock, cover the Base Consolidation Engineering of weak soil.
Background technology
In engineering construction, have the foundation engineering of covering weak soil on a large amount of Rocks, on this basement rock, cover and on soft foundation, build embankment engineering, need to carry out composite foundation stabilization processing to ground, can adopt cement mixing method to the reinforcing of weak soil under normal circumstances, high-pressure rotary jet grouting pile measure, but in the time that weak soil is thicker or the filled height of top embankment engineering is larger, bearing capacity or settlement Control that cement mixing method or high-pressure rotary jet grouting pile are reinforced groundwork usually can not meet engineering demand, in addition in the time containing a large amount of organic matter in weak soil, cement mixing method or high-pressure rotary jet grouting pile pile quality are very poor, soft soil foundation pressure pile has good supporting capacity, but under while covering basement rock, himself can not be stablized, easily form inclination and distortion, therefore conventionally adopt at present bored pile to reinforce ground, but entirely adopt Grouting Pile Engineering of Drilling Hole investment very huge, therefore, need in the case that a kind of consolidation effect is good, the reinforced soft soil ground measure of economy, easy construction, and meet environmental requirement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of soft foundation compound pile web frame, effectively to improve consolidation effect, and saves construction investment.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Soft foundation compound pile web frame of the present invention, is characterized in that it comprises: bored pile, arrange along filling body border circumferentially-spaced, and the stake end, enters certain depth in Soft Soil Layer subterrane layer; Pressure pile, is arranged at intervals in the Soft Soil Layer within the scope of bored pile, and bottom is pressed into horizon d end face; Pile cover, is arranged on bored pile and pressure pile top and fixed being integrated with it; Guiding fixed frame lattice, are positioned at Soft Soil Layer, and each bored pile, pressure pile are formed to horizontal restrain; Bedding body, is layed between pile cover top and filling body bottom surface.
The invention has the beneficial effects as follows, effectively solved the reinforcing problem of covering soft foundation on basement rock, adopt pressure pile Substitute For Partial bored pile can greatly save construction investment, pressure pile can be saved investment more than 80% compared with the every linear meter(lin.m.) of bored pile; By the use fixed frame lattice that lead, can avoid occurring in pressure pile construction and load bearing process skew or tilt, thereby guaranteeing the supporting capacity of pressure pile, can strengthen the integral plane action effect of bored pile and pressure pile simultaneously; The features such as this combining structure has that ground stabilization is effective, remarkable in economical benefits, simple in structure, easy construction, and meet environmental requirement, there is wide popularizing application prospect.
Accompanying drawing explanation
This manual comprises following four width accompanying drawings:
Fig. 1 is soft foundation compound pile web frame sectional schematic diagram of the present invention;
Fig. 2 is soft foundation compound pile web frame floor map of the present invention;
Fig. 3 is soft foundation compound pile web frame guiding fixed frame lattice drawing of the present invention;
Fig. 4 is the enlarged diagram of local D in Fig. 1;
Member shown in figure, toponym and corresponding mark: bored pile 11, pressure pile 12, pile cover 13; Guiding fixed frame lattice 30, guide 31, connecting cross beam 32, longitudinal beam connected 33; Bedding body 20, lower hardcore bed 21, lower geogrids layer 22, medium stone bed course 23, upper geogrids layer 24, upper hardcore bed 25; Horizon d A, Soft Soil Layer B, filling body C.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
See figures.1.and.2, soft foundation compound pile web frame comprises: bored pile 12, arrange along filling body C border circumferentially-spaced, and the stake end, enters certain depth in Soft Soil Layer B subterrane layer A, and in the time that filling body C width is larger, bored pile 12 can arrange many rows; Pressure pile 12, is arranged at intervals in the Soft Soil Layer B in bored pile 11 scopes, and bottom is pressed into the end face to horizon d A; Pile cover 13, is arranged on bored pile 11 and pressure pile 12 tops and fixed being integrated with it; Guiding fixed frame lattice 30, are positioned at Soft Soil Layer B, and each bored pile 12, pressure pile 12 are formed to horizontal restrain; Bedding body 20, is layed between pile cover 13 tops and filling body C bottom surface.
With reference to Fig. 1, described guiding fixed frame lattice 30 every longitudinal separation 15～20m in Soft Soil Layer B arranges a width.With reference to Fig. 2 and Fig. 3, described guiding fixed frame lattice 30 are made up of guide 31, connecting cross beam 32 and longitudinal beam connected 33, guide 31 internal diameters are suitable with the external diameter of corresponding bored pile 12, pressure pile 12, connecting cross beam 32 connects as one horizontal adjacent guide 31, and longitudinal beam connected 33 connects as one longitudinal adjacent connecting cross beam 32.When construction, fixed frame lattice 30 are arranged on soft foundation, until pressure pile 12, hole is pressed into after guide 31, then fixed frame lattice 30 are pressed into certain depth in Soft Soil Layer B.With reference to Fig. 3, described longitudinal beam connected 33 is often laterally separated by 2～4 campshed settings together, and guide 31 internal diameters are greater than the diameter of bored pile 12, pressure pile 12, but are no more than 10cm.Guiding fixed frame lattice 30 adopt steel concrete to build conventionally, and its sectional dimension is not less than 0.5m × 0.5m.
With reference to Fig. 1, the load of bored pile 11 and pressure pile 12 shared top filling body C, solve the problem of bearing capacity of foundation soil and foundation settlement, at the bottom of 11 of bored piles, enter in horizon d A simultaneously, therefore bored pile 11 has good stability, can fixed guide fixed frame lattice 30 in the position of plane with improve the mass action effect of ground stabilization.The most of bored pile that adopts pressure pile 12 to substitute in existing reinforcing construction, can give full play to the vertical bearing capacity suitable with bored pile, therefore can significantly save construction investment.Utilize pile cover 13 to increase the lifting surface area of stake, give full play to bored pile 11 and pressure pile 12 supporting capacitys and the sedimentation that reduces inter-pile soil.Guiding fixed frame lattice 30 are pressed into construction plane and vertical location to pressure pile 12, and avoid pressure pile 12 construct and load bearing process in there is skew or tilt, can strengthen the integral plane action effect of bored pile 11 and pressure pile 12 simultaneously.Bedding body 20 is as the cushion coat of bored pile 11 and pressure pile 12 and top filling body C, and the distortion of coordination stake soil.
This combining structure has solved the reinforcing problem of covering soft foundation on basement rock effectively, adopt pressure pile to substitute most of bored pile and can save significantly construction investment, pressure pile can be saved investment more than 80% compared with the every linear meter(lin.m.) of bored pile, and therefore economic benefit is very remarkable.This is simple in structure, easy construction, and there is good ground stabilization effect.
With reference to Fig. 1, this combining structure sequence of construction is: construction drill castinplace pile 11 → construction guidance fixed frame lattice 30 → and at the interior static pressure construction of guide 31 pressure pile 12 → construction pile cover 13 → construction cushion coat body 20 of guiding fixed frame lattice 30.
With reference to Fig. 2, described bored pile 11 and the general 2.0～2.4m of pressure pile 12 setting space, pressure pile 12 can adopt plain concrete pile or pile for prestressed pipe.With reference to Fig. 1, described pile cover 13 diameters are greater than bored pile 11, more than pressure pile 12 diameter 0.5m, and pile cover 13 diameters are 1.5～2.0m.With reference to Fig. 4, bedding body 20 is generally made up of the lower hardcore bed 21 of from bottom to top laying successively, lower geogrids layer 22, medium stone bed course 23, upper geogrids layer 24 and upper hardcore bed 25.
Some principles of the above soft foundation compound pile web frame of the present invention that just explains through diagrams, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (8)
1. soft foundation compound pile web frame, is characterized in that it comprises: bored pile (11), arrange along filling body (C) border circumferentially-spaced, and the stake end, enters certain depth in Soft Soil Layer (B) subterrane layer (A); Pressure pile (12), is arranged at intervals in the Soft Soil Layer (B) in bored pile (11) scope, and bottom is pressed into horizon d (A) end face; Pile cover (13), is arranged on bored pile (11) and pressure pile (12) top and fixed being integrated with it; Guiding fixed frame lattice (30), are positioned at Soft Soil Layer (B), and each bored pile (12), pressure pile (12) are formed to horizontal restrain; Bedding body (20), is layed between pile cover (13) top and filling body (C) bottom surface.
2. soft foundation compound pile web frame as claimed in claim 1, is characterized in that: described guiding fixed frame lattice (30) every longitudinal separation 15～20m in Soft Soil Layer (B) arranges a width.
3. soft foundation compound pile web frame as claimed in claim 2, it is characterized in that: described guiding fixed frame lattice (30) are made up of guide (31), connecting cross beam (32) and longitudinal beam connected (33), guide (31) internal diameter is suitable with the external diameter of corresponding bored pile (12), pressure pile (12), connecting cross beam (32) connects as one horizontal adjacent guide (31), and longitudinal beam connected (33) longitudinally adjacent connecting cross beam (32) connects as one.
4. soft foundation compound pile web frame as claimed in claim 3, it is characterized in that: described longitudinal beam connected (33) is often laterally separated by 2～4 campshed settings together, and the diameter that guide (31) internal diameter is greater than bored pile (12), pressure pile (12) is no more than 10cm.
5. the soft foundation compound pile web frame as described in claim 2 to 4 any one, is characterized in that: described guiding fixed frame lattice (30) adopt steel concrete to build, and its sectional dimension is not less than 0.5m × 0.5m.
6. soft foundation compound pile web frame as claimed in claim 1, is characterized in that: described bored pile (11) and the general 2.0～2.4m of pressure pile (12) setting space, pressure pile (12) adopts plain concrete pile or pile for prestressed pipe.
7. soft foundation compound pile web frame as claimed in claim 1, is characterized in that: described pile cover (13) diameter is greater than bored pile (11), more than pressure pile (12) diameter 0.5m, and pile cover (13) diameter is 1.5～2.0m.
8. soft foundation compound pile web frame as claimed in claim 1, is characterized in that: described bedding body (20) is made up of the lower hardcore bed (21) of from bottom to top laying successively, lower geogrids layer (22), medium stone bed course (23), upper geogrids layer (24) and upper hardcore bed (25).
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| CN201410042402.8A CN103821160B (en) | 2014-01-28 | 2014-01-28 | Soft soil foundation combined pile net structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100279A (en) * | 2014-07-16 | 2014-10-15 | 中铁西北科学研究院有限公司 | Tunnel floor supporting frame penetrating cave and construction method thereof |
| CN104452578A (en) * | 2014-12-17 | 2015-03-25 | 福州大学 | Seismic-resistant integral abutment bridge with energy absorption materials embedded in pier tops and construction method of seismic-resistant integral abutment bridge |
| CN106049213A (en) * | 2016-07-27 | 2016-10-26 | 宁波市交通规划设计研究院有限公司 | Control method and structure of non-uniform settlement of highway soft soil roadbed |
| CN106400636A (en) * | 2016-10-20 | 2017-02-15 | 宁波市交通规划设计研究院有限公司 | Control method for multilayer road soft soil roadbed differential settlement |
| CN106702840A (en) * | 2017-02-10 | 2017-05-24 | 湖南大学 | Anchored pile reinforced earth retaining wall embankment for treating shoreside soft soil roadbed |
| CN108130826A (en) * | 2018-01-18 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
| CN108277750A (en) * | 2018-03-20 | 2018-07-13 | 杭州江润科技有限公司 | The porous cast-in-place box culvert construct method of high roadbed deep soft foundation pile formula big cross section |
| CN113215864A (en) * | 2021-05-08 | 2021-08-06 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN114351526A (en) * | 2021-12-27 | 2022-04-15 | 湖南省西湖建筑集团有限公司 | Soft soil roadbed structure system and construction method |
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| CN203782727U (en) * | 2014-01-28 | 2014-08-20 | 中铁二院工程集团有限责任公司 | Soft soil foundation combined pile mesh structure |
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| JPH07331642A (en) * | 1994-06-13 | 1995-12-19 | Taisei Corp | Truss device for pile and trussing method of pile |
| JPH0949239A (en) * | 1995-08-09 | 1997-02-18 | Shimizu Corp | Foundation structure coping with liquefaction |
| JP3448725B2 (en) * | 1995-12-04 | 2003-09-22 | 株式会社竹中工務店 | Construction method of structural foundation using cast-in-place reinforced concrete pile |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100279A (en) * | 2014-07-16 | 2014-10-15 | 中铁西北科学研究院有限公司 | Tunnel floor supporting frame penetrating cave and construction method thereof |
| CN104452578A (en) * | 2014-12-17 | 2015-03-25 | 福州大学 | Seismic-resistant integral abutment bridge with energy absorption materials embedded in pier tops and construction method of seismic-resistant integral abutment bridge |
| CN106049213A (en) * | 2016-07-27 | 2016-10-26 | 宁波市交通规划设计研究院有限公司 | Control method and structure of non-uniform settlement of highway soft soil roadbed |
| CN106400636A (en) * | 2016-10-20 | 2017-02-15 | 宁波市交通规划设计研究院有限公司 | Control method for multilayer road soft soil roadbed differential settlement |
| CN106400636B (en) * | 2016-10-20 | 2018-08-21 | 宁波市交通规划设计研究院有限公司 | A kind of control method of the soft soil roadbed differential settlement of Multi-layer road |
| CN106702840A (en) * | 2017-02-10 | 2017-05-24 | 湖南大学 | Anchored pile reinforced earth retaining wall embankment for treating shoreside soft soil roadbed |
| CN108130826A (en) * | 2018-01-18 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
| CN108277750A (en) * | 2018-03-20 | 2018-07-13 | 杭州江润科技有限公司 | The porous cast-in-place box culvert construct method of high roadbed deep soft foundation pile formula big cross section |
| CN113215864A (en) * | 2021-05-08 | 2021-08-06 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN113215864B (en) * | 2021-05-08 | 2022-05-03 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN114351526A (en) * | 2021-12-27 | 2022-04-15 | 湖南省西湖建筑集团有限公司 | Soft soil roadbed structure system and construction method |
| CN114351526B (en) * | 2021-12-27 | 2023-03-03 | 湖南省西湖建筑集团有限公司 | Soft soil roadbed structure system and construction method |
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| CN103821160B (en) | 2017-01-18 |
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