CN103821160B - Soft soil foundation combined pile net structure - Google Patents
Soft soil foundation combined pile net structure Download PDFInfo
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- CN103821160B CN103821160B CN201410042402.8A CN201410042402A CN103821160B CN 103821160 B CN103821160 B CN 103821160B CN 201410042402 A CN201410042402 A CN 201410042402A CN 103821160 B CN103821160 B CN 103821160B
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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 to the Base Consolidation Engineering of Rock overlying weak soil.
Background technology
In engineering construction, there are the foundation engineering of substantial amounts of Rock overlying weak soil, in this basement rock overlying weak soil
Embankment engineering is built on ground, needs to carry out composite foundation stabilization process to ground, the reinforcing to weak soil under normal circumstances can be adopted
With cement mixing method, high-pressure rotary jet grouting pile measure, but when weak soil is thicker or the filled height of top embankment engineering is larger, cement
The bearing capacity of native mixing pile or high-pressure rotary jet grouting pile reinforcing groundwork or settlement Control usually can not meet engineering demand, in addition when soft
When in soil containing organic matter in a large number, cement mixing method or high-pressure rotary jet grouting pile pile quality are very poor；Soft soil foundation jacked pile
There is preferable bearing capacity, but under when covering basement rock, its own can not be stablized, and easily form inclination and distortion, therefore generally adopt at present
Cast-in-situ bored pile is reinforced to ground, but entirely adopts Grouting Pile Engineering of Drilling Hole investment very huge, therefore, needs in the case
Will a kind of consolidation effect is good, economy, the reinforced soft soil ground measure of easy construction, and meet environmental requirement.
Content of the invention
The technical problem to be solved is to provide a kind of soft soil foundation to combine pile net structure, to effectively improve reinforcing
Effect, and save construction investment.
The technical solution adopted for the present invention to solve the technical problems is as follows:
The soft soil foundation combination pile net structure of the present invention, is characterized in that it includes: cast-in-situ bored pile, along filling body border four
Weekly interval is arranged, and stake bottom enters certain depth in Soft Soil Layer subterrane layer；Jacked pile, is arranged at intervals at cast-in-situ bored pile scope
In interior Soft Soil Layer, bottom is pressed into horizon d top surface；Pile cover, is arranged on cast-in-situ bored pile and jacked pile top and consolidates therewith
It is integrated；Guiding fixed frame lattice, in Soft Soil Layer, form lateral confinement to each cast-in-situ bored pile, jacked pile；Bedding body,
It is layed between pile cover top and filling body bottom surface.
The invention has the beneficial effects as follows, efficiently solve the reinforcing problem of basement rock overlying soft soil foundation, using jacked pile
Substitute part cast-in-situ bored pile can greatly save construction investment, jacked pile compared with the every linear meter(lin.m.) of cast-in-situ bored pile can investment reduction 80% with
On；By using guiding fixed frame lattice, can avoid being pressed into appearance skew or inclination in pile driving construction and load bearing process, thus ensureing
The bearing capacity of jacked pile, can strengthen the plane mass action effect of cast-in-situ bored pile and jacked pile simultaneously；This combinative structure has
Have that foundation stabilization effect is good, remarkable in economical benefits, structure simple, easy construction the features such as, and meet environmental requirement, have wide
Popularizing application prospect.
Brief description
This specification includes following four width accompanying drawings:
Fig. 1 is soft soil foundation combination pile net structure sectional schematic diagram of the present invention；
Fig. 2 is soft soil foundation combination pile net structure floor map of the present invention；
Fig. 3 is that soft soil foundation combination pile net structure fixed guide of the present invention determines framework lattice drawing；
Fig. 4 is the enlarged diagram of local d in Fig. 1；
In figure illustrates component, toponym and corresponding labelling: cast-in-situ bored pile 11, jacked pile 12, pile cover 13；Guiding
Fixed frame lattice 30, guide 31, connecting cross beam 32, longitudinal beam connected 33；Bedding body 20, lower blotter 21, lower geogrids layer
22nd, medium stone bed course 23, upper geogrids layer 24, upper blotter 25；Horizon d a, Soft Soil Layer b, filling body c.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
See figures.1.and.2, soft soil foundation combination pile net structure includes: cast-in-situ bored pile 11, along filling body c border surrounding
Interval setting, stake bottom enters certain depth in Soft Soil Layer b subterrane layer a, when filling body c width is larger, cast-in-situ bored pile
11 can arrange multiple rows of；Jacked pile 12, is arranged at intervals in the Soft Soil Layer b in the range of cast-in-situ bored pile 11, bottom is pressed into basement rock
Layer a top surface；Pile cover 13, be arranged on cast-in-situ bored pile 11 and jacked pile 12 top and therewith consolidation be integrated；Guiding fixed frame
Lattice 30, in Soft Soil Layer b, form lateral confinement to each cast-in-situ bored pile 11, jacked pile 12；Bedding body 20, is layed in pile cover
Between 13 tops and filling body c bottom surface.
With reference to Fig. 1, described guiding fixed frame lattice 30 in Soft Soil Layer b often longitudinally spaced 15～20m one width is set.Reference
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 diameter
It is adapted with the external diameter of corresponding cast-in-situ bored pile 11, jacked pile 12, laterally adjacent guide 31 is connected as by connecting cross beam 32
Integrally, longitudinally adjacent connecting cross beam 32 is connected as one by longitudinal beam connected 33.During construction, fixed frame lattice 30 are arranged at weak soil
On ground, it is pressed into after guide 31 after jacked pile 12 device to hole, then fixed frame lattice 30 are pressed into certain depth in Soft Soil Layer b.Reference
Fig. 3, often laterally spaced 2～4 campsheds arrange together described longitudinal beam connected 33, and guide 31 internal diameter is more than cast-in-situ bored pile 11, press-in
The diameter of stake 12, but it is less than 10cm.Guiding fixed frame lattice 30 are generally poured using armored concrete, and its sectional dimension is not little
In 0.5m × 0.5m.
With reference to Fig. 1, the load of cast-in-situ bored pile 11 and jacked pile 12 shared top filling body c, solve foundation bearing
Power and the problem of settlement of foundation, simultaneously in 11 bottoms entrance horizon d a of cast-in-situ bored pile, therefore cast-in-situ bored pile 11 has preferably
Stability, can be with fixed guide fixed frame lattice 30 in the position of plane and the mass action effect improving foundation stabilization.Using
Jacked pile 12 substitutes the most of cast-in-situ bored pile in existing reinforcing construction, can give full play to suitable with cast-in-situ bored pile vertical
Bearing capacity, therefore can significantly save construction investment.Increase the lifting surface area of stake using pile cover 13, give full play to drill-pouring
Stake 11 and jacked pile 12 bearing capacity and the sedimentation reducing inter-pile soil.Guiding fixed frame lattice 30 carry out press-in to jacked pile 12 to be applied
Work plane and vertical position, and avoid jacked pile 12 to construct and load bearing process in skew occur or tilt, boring can be strengthened simultaneously
The plane mass action effect of bored concrete pile 11 and jacked pile 12.Bedding body 20 is as cast-in-situ bored pile 11 and jacked pile 12 and top
The cushion of filling body c, and coordinate stake soil deformation.
This combinative structure efficiently solves the reinforcing problem of basement rock overlying soft soil foundation, is substituted most of using jacked pile
Cast-in-situ bored pile can significantly save construction investment, jacked pile compared with the every linear meter(lin.m.) of cast-in-situ bored pile can investment reduction more than 80%,
Therefore economic benefit is very notable.This structure is simple, easy construction, and has good foundation stabilization effect.
With reference to Fig. 1, this combinative structure sequence of construction is: construction drill bored concrete pile 11 → construction guidance fixed frame lattice 30 →
Static pressure construction jacked pile 12 → construction pile cover 13 → construction cushion coat body 20 in the guide 31 of guiding fixed frame lattice 30.
With reference to Fig. 2, described cast-in-situ bored pile 11 and the general 2.0～2.4m of jacked pile 12 setting space, jacked pile 12 can be adopted
With plain concrete pile or pile for prestressed pipe.With reference to Fig. 1, described pile cover 13 is with diameter greater than cast-in-situ bored pile 11, jacked pile 12 diameter
More than 0.5m, a diameter of 1.5～2.0m of pile cover 13.With reference to Fig. 4, bedding body 20 is typically broken by from bottom to top laying down successively
Stone bed course 21, lower geogrids layer 22, medium stone bed course 23, upper geogrids layer 24 and upper blotter 25 are constituted.
The above soft soil foundation of the present invention of simply explaining through diagrams combines some principles of pile net structure, be not intended to by
Shown in the present invention is confined to and in described concrete structure and the scope of application, thus every corresponding modification being possible to be utilized with
And equivalent, belong to the apllied the scope of the claims of the present invention.
Claims (8)
1. soft soil foundation combination pile net structure, is characterized in that it includes: cast-in-situ bored pile (11), along filling body (c) border surrounding
Interval setting, stake bottom enters certain depth in Soft Soil Layer (b) subterrane layer (a)；Jacked pile (12), is arranged at intervals at boring and fills
In Soft Soil Layer (b) in the range of note stake (11), bottom is pressed into horizon d (a) top surface；Pile cover (13), is arranged on cast-in-situ bored pile
(11) and jacked pile (12) top and therewith consolidation be integrated；Guiding fixed frame lattice (30), in Soft Soil Layer (b), to each
Cast-in-situ bored pile (11), jacked pile (12) form lateral confinement；Bedding body (20), is layed in pile cover (13) top and filling body
Between (c) bottom surface.
2. soft soil foundation as claimed in claim 1 combines pile net structure, it is characterized in that: described guiding fixed frame lattice (30) in
In Soft Soil Layer (b), often longitudinally spaced 15～20m arranges a width.
3. soft soil foundation as claimed in claim 2 combines pile net structure, it is characterized in that: described guiding fixed frame lattice (30) by
Guide (31), connecting cross beam (32) and longitudinal beam connected (33) composition, guide (31) internal diameter and corresponding cast-in-situ bored pile (11), pressure
The external diameter entering stake (12) is adapted, and laterally adjacent guide (31) is connected as one by connecting cross beam (32), longitudinal beam connected (33)
Longitudinally adjacent connecting cross beam (32) connects as one.
4. soft soil foundation as claimed in claim 3 combines pile net structure, it is characterized in that: described longitudinal beam connected (33) often horizontal phase
Every 2～4 campshed settings together, guide (31) internal diameter is more than cast-in-situ bored pile (11), the diameter of jacked pile (12) is less than 10cm.
5. the soft soil foundation combination pile net structure as described in claim 2 to 4 any one, is characterized in that: described guiding is fixed
Framework lattice (30) are poured using armored concrete, and its sectional dimension is not less than 0.5m × 0.5m.
6. soft soil foundation as claimed in claim 1 combines pile net structure, it is characterized in that: described cast-in-situ bored pile (11) and press-in
Stake (12) setting space is 2.0～2.4m, and jacked pile (12) adopts plain concrete pile or pile for prestressed pipe.
7. soft soil foundation as claimed in claim 1 combines pile net structure, it is characterized in that: described pile cover (13) is with diameter greater than boring
Bored concrete pile (11), jacked pile (12) more than diameter 0.5m, a diameter of 1.5～2.0m of pile cover (13).
8. soft soil foundation as claimed in claim 1 combines pile net structure, it is characterized in that: described bedding body (20) is from bottom to top
The lower blotter (21) laid successively, lower geogrids layer (22), medium stone bed course (23), upper geogrids layer (24) and upper
Blotter (25) is constituted.
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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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| CN201410042402.8A CN103821160B (en) | 2014-01-28 | 2014-01-28 | Soft soil foundation combined pile net structure |
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| CN103821160B true CN103821160B (en) | 2017-01-18 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN104452578B (en) * | 2014-12-17 | 2016-08-17 | 福州大学 | Quake-proof type Integral Abutment Bridge and the construction method thereof of energy-absorbing material is buried on stake top underground |
| CN106049213B (en) * | 2016-07-27 | 2018-03-20 | 宁波市交通规划设计研究院有限公司 | A kind of control method and structure of highway soft soil settlement of subgrade |
| 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 |
| CN106702840B (en) * | 2017-02-10 | 2022-05-24 | 湖南大学 | Anchor-pull type pile-bearing reinforced earth retaining wall embankment for treating soft soil roadbed on shoreside |
| 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 |
| CN108277750B (en) * | 2018-03-20 | 2020-08-14 | 杭州江润科技有限公司 | Construction method of high-fill deep-thick soft foundation pile-supported large-section porous cast-in-place box culvert |
| 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 |
| 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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| JP3554901B2 (en) * | 1994-06-13 | 2004-08-18 | 大成建設株式会社 | How to pile well |
| 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 |
| CN1974953A (en) * | 2005-11-28 | 2007-06-06 | 李仁平 | Nonlinear multielement compound pile foundation |
| CN101148891A (en) * | 2007-10-09 | 2008-03-26 | 水利部交通部电力工业部南京水利科学研究院 | Rigid and flexible long-short pile composite foundation used for highway soft soil foundation treatment |
| CN103276753B (en) * | 2013-06-06 | 2015-08-12 | 中国中化股份有限公司 | A kind of thin stake strength entoilage base leveling system for steel storage tank basis |
| 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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Owner name: CHENGDU INFORMATION TECHNOLOGY INSTITUTE Effective date: 20140512 |
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Effective date of registration: 20140512 Address after: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 3 Applicant after: China Railway Eryuan Engineering Group Co., Ltd. Applicant after: Chengdu Information Technology Institute Address before: 610031 Sichuan Province, Chengdu City Kam Tong Road No. 3 Applicant before: China Railway Eryuan Engineering Group Co., Ltd. |
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Address after: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 3 Applicant after: China Railway Eryuan Engineering Group Co., Ltd. Applicant after: Chengdu information engineering university Address before: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 3 Applicant before: China Railway Eryuan Engineering Group Co., Ltd. Applicant before: Chengdu Information Technology Institute |
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