CN104179105B - A kind of contrary sequence method rigid pile composite foundation construction method - Google Patents
A kind of contrary sequence method rigid pile composite foundation construction method Download PDFInfo
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- CN104179105B CN104179105B CN201410426965.7A CN201410426965A CN104179105B CN 104179105 B CN104179105 B CN 104179105B CN 201410426965 A CN201410426965 A CN 201410426965A CN 104179105 B CN104179105 B CN 104179105B
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- embankment
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Abstract
The invention discloses a kind of contrary sequence method rigid pile composite foundation construction method, working procedure：First roadbed treatment is carried out in the bottom of whole composite foundation, embankment is carried out after roadbed treatment is smooth at an upper portion thereof, rigid pile construction is carried out after the completion of embankment, the structure sheaf construction of the superiors is finally carried out above embankment, form structure sheaf rigid pile embankment roadbed collective effect system.Reverse construction of the present invention is by changing rigid pile composite foundation sequence of construction in highway engineering, according to roadbed and the loading characteristic of rigid pile, jacking, hoop Shu Zuoyong in crowd in-out effects and the course of work during making full use of embankment to set the stake of the compaction of weak subgrade, rigid pile and dynamic stiffiness to embankment to embankment, reach the purpose for reducing cost, shortening duration and control settlement, easy construction, controllability are strong, suitable for the treatment of common Soft Roadbed, it is particularly suited for the treatment of highway road-bridge transition section.
Description
Technical field
The present invention relates to civil engineering groundwork basic field, and in particular to a kind of contrary sequence method rigid pile composite foundation construction party
Method.
Background technology
China builds substantial amounts of high-grade highway in soft clay area every year, and major part needs to carry out basement process, traditional
Method for processing foundation is pile body of first constructing, after carry out embankment.It is control settlement after construction, to the material of embankment and rolls
Packing requirement it is strict so that the construction period is more long, cost is higher；Particularly in road-bridge transition section, to ensure to occur without
" jump car " phenomenon, generally requires the processing method for taking some special, very big to duration and cost influence, and effect is difficult to protect
Card.
The content of the invention
The technical problem to be solved in the present invention is, to overcome traditional method for processing foundation above shortcomings, there is provided one
Contrary sequence method rigid pile composite foundation construction method is planted, reduction cost is reached by reverse construction, is shortened duration and control settlement
Purpose.
The present invention is for the solution technical scheme that is used of above-mentioned technical problem：
A kind of contrary sequence method rigid pile composite foundation construction method, including following construction procedure：
1）Roadbed treatment is carried out in the bottom of whole composite foundation；
2）Embankment is carried out after roadbed treatment is smooth at an upper portion thereof；
3）Rigid pile construction is carried out after the completion of embankment, rigid pile wears into embankment and roadbed successively from embankment upper surface
It is interior；
4）The structure sheaf construction of the superiors is carried out after the completion of rigid pile construction above embankment, structure sheaf includes roadbed and road
Face.
By such scheme, each construction procedure is specially：
1）Roadbed treatment
1. site clearing：By the leveling of roadbed ground, rolled before being filled out with road roller, density of roadbed is reached 90%；
2. the top surface at roadbed center line position installs sedimentation plate, walking along the street base settlement monitoring of going forward side by side every 30m；
2）Embankment
1. from the native filling material as embankment of element, Highway Embankment Compaction degree reaches 92%；
2. placement in layers element soil and compaction test is carried out, rolling time according to needed for compaction test result determines to fill process
Loose laying depth and optimum moisture content that number, rolling speed and layering are banketed；
3. the Embankment Subsidence monitoring after carrying out embankment process and filling；
3）Rigid pile construction
1. rigid pile design is formulated：According to step 1）Subgrade settlement monitoring result and step 2）Embankment Subsidence prison
Survey time and rigid pile installation, setting length, diameter and arrangement that result determines rigid pile construction, the class of rigid pile
Type includes CFG, plain concrete pile, precast reinforced concrete piles and cast-in-situ bored pile；
2. rigid pile is set according to related construction of the highway code requirement；
3. sedimentation plate, walking along the street dike settlement monitoring of going forward side by side are installed at the top of the rigid pile of 30m at embankment center line position；
4）Structure sheaf is constructed
1. step 3 is treated）After middle embankment settlement monitoring result stabilization, roadbed construction is carried out, roadbed includes lower roadbed and upper road
Bed, by design requirement placement in layers roadbed, lower roadbed compactness reaches 93%, and upper roadbed compactness reaches 94%；
2. pavement construction is carried out above roadbed by related construction of the highway code requirement.
By such scheme, the step 2）The middle loose laying depth d for banketing that is layered meets 8cm≤d≤30cm.
By such scheme, the step 3）Also include determining whether dynamic stiffiness of constructing according to its Embankment Subsidence monitoring result
Stake：When Embankment Subsidence amount exceeds setting value, construction dynamic stiffiness stake；When Embankment Subsidence amount is without departing from setting value, then do not apply
The stake of work dynamic stiffiness.
Operation principle of the invention：Different from traditional highway Composite foundation construction order, the present invention is by changing highway
Rigid pile composite foundation sequence of construction in engineering, after grading, first completes embankment, further according to road after the completion of embankment
Base settlement monitoring result and Embankment Subsidence monitoring result determine rigid pile design, then set rigid pile, finally construction knot
Structure layer, forms structure sheaf-rigid pile-embankment-roadbed collective effect system；According to roadbed and the loading characteristic of rigid pile, fully
During being set to the stake of the compaction of weak subgrade, rigid pile and dynamic stiffiness using embankment to the crowd in-out effects of embankment and
Jacking, hoop Shu Zuoyong in the course of work to embankment, control the settlement after construction of embankment.
Compared with existing construction method, the invention has the advantages that：
1st, settlement after construction is effectively controlled：Under embankment loading, roadbed completes most of consolidation during embankment
Deformation, reduces reinforcement amount and advantageously reduces the settlement after construction of roadbed；Rigid pile and dynamic stiffiness stake are right during setting
Jacking, hoop Shu Zuoyong in the crowd in-out effects and the course of work of embankment to embankment, can effectively control the settlement after construction of embankment；
2nd, reduce cost and shorten the duration：To embankment filling material requirement usually dirt, and pressure in conventional construction method
Solidity requirement reaches 96%, and embankment of the present invention only needs to only reach 92% using element soil and compactness, right due to reducing
The requirement of embankment material and compactness, so as to material usage, construction costs and engineering time is greatly decreased；
3rd, integrated structure layer-rigid pile of the present invention-embankment-roadbed collective effect system and settlement monitoring means, realize
The controllability of construction effect and quality, solves the problems, such as conventional road Composite foundation construction, it is adaptable to common Ruan Ji roads
Section treatment, is particularly suited for the treatment of highway road-bridge transition section（Avoid vehicle bump at bridge ends）, have in Practical Project higher
Application value.
Brief description of the drawings
Fig. 1 is the structural representation of rigid pile composite foundation of the present invention；
Fig. 2 is the layout diagram of rigid pile of the present invention and dynamic stiffiness stake；
In figure, 1- structure sheafs（Roadbed and road surface）, 2- embankments, 3- roadbeds, 4- rigid piles, the stake of 5- dynamic stiffinesses.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in 1 ~ Fig. 2 of reference picture, contrary sequence method rigid pile composite foundation construction method of the present invention, including following construction
Step：
1）Roadbed 3 is carried out in the bottom of whole composite foundation to process：
1. site clearing：By the leveling of roadbed ground, rolled before being filled out with road roller, the packing of roadbed 3 is reached 90%；
2. the top surface at the center line position of roadbed 3 installs sedimentation plate, walking along the street base settlement monitoring of going forward side by side every 30m；
2）Roadbed 3 process it is smooth after carry out embankment 2 at an upper portion thereof and fill：
1. from the native filling material as embankment 2 of element, the compactness of embankment 2 reaches 92%；
2. placement in layers element soil and compaction test is carried out, rolling time according to needed for compaction test result determines to fill process
The loose laying depth that number, rolling speed and layering are banketed（Loose laying depth d meets 8cm≤d≤30cm）And optimum moisture content；
3. embankment 2 is carried out to fill process and fill the monitoring of the Embankment Subsidence after 2；
3）Embankment 2 carries out rigid pile 4 and constructs after the completion of filling, and rigid pile 4 wears into embankment 2 successively from the upper surface of embankment 2
And in roadbed 3：
1. the design of rigid pile 4 is formulated：According to step 1）Subgrade settlement monitoring result and step 2）Embankment Subsidence
Monitoring result determines the time of the construction of rigid pile 4 and the type of rigid pile 4, sets length, diameter and arrangement, rigid pile
4 type includes CFG, plain concrete pile, precast reinforced concrete piles and cast-in-situ bored pile；
2. rigid pile 4 is set according to related construction of the highway code requirement；
3. sedimentation plate, walking along the street dike settlement monitoring of going forward side by side are installed every the top of rigid pile 4 of 30m at the center line position of embankment 2；
4. construction is determined whether according to 3. middle embankment settlement monitoring result（Benefit sets）Dynamic stiffiness stake 5：When the settling amount of embankment 2
During beyond setting value, construction dynamic stiffiness stake 5；When the settling amount of embankment 2 is without departing from setting value, then dynamic stiffiness of not constructing stake 5
（The form of construction work of the dynamic stiffiness stake 5 is consistent with rigid pile 4）；
4）The structure sheaf 1 that rigid pile 4 carries out the superiors after the completion of constructing in the top of embankment 2 is constructed, and structure sheaf 1 includes roadbed
And road surface：
1. step 3 is treated）After middle embankment settlement monitoring result stabilization, roadbed construction is carried out, roadbed includes lower roadbed and upper road
Bed, by design requirement placement in layers roadbed, lower roadbed compactness reaches 93%, and upper roadbed compactness reaches 94%；
2. pavement construction is carried out above roadbed by related construction of the highway code requirement.
The present invention after roadbed 3 is smooth, first completes embankment by changing rigid pile composite foundation sequence of construction in highway engineering
2 fill, and embankment 2 determines that rigid pile 4 is designed after the completion of filling further according to subgrade settlement monitoring result and Embankment Subsidence monitoring result
Scheme, then sets rigid pile 4, and last constructing structure layer 1 forms the collective effect of structure sheaf 1- rigid pile 4- embankment 2- roadbeds 3
System；According to roadbed 3 and the loading characteristic of rigid pile 4, compaction, rigid pile 4 of the embankment 2 to weak subgrade 3 are made full use of
And dynamic stiffiness stake 5 set during in the crowd in-out effects and the course of work of embankment 2 to the jacking of embankment 2, hoop Shu Zuoyong,
Control the settlement after construction of embankment 2.
Above-described is only presently preferred embodiments of the present invention, can not limit the right model of the present invention with this certainly
Enclose, when the rigid pile of construction be CFG, pile-type beyond plain concrete pile, precast reinforced concrete piles and cast-in-situ bored pile when,
This method is equally applicable, therefore the equivalence changes made according to scope of the present invention patent, still belongs to protection scope of the present invention.
Claims (3)
1. a kind of contrary sequence method rigid pile composite foundation construction method, it is characterised in that including following construction procedure：
1）Roadbed treatment is carried out in the bottom of whole composite foundation；
1. site clearing：By the leveling of roadbed ground, rolled before being filled out with road roller, density of roadbed is reached 90%；
2. the top surface at roadbed center line position installs sedimentation plate, walking along the street base settlement monitoring of going forward side by side every 30m；
2）Embankment is carried out after roadbed treatment is smooth at an upper portion thereof；
1. from the native filling material as embankment of element, Highway Embankment Compaction degree reaches 92%；
2. placement in layers element soil and compaction test is carried out, number of rolling according to needed for compaction test result determines to fill process,
Loose laying depth and optimum moisture content that rolling speed and layering are banketed；
3. the Embankment Subsidence monitoring after carrying out embankment process and filling；
3）Rigid pile construction is carried out after the completion of embankment, rigid pile wears into embankment and roadbed successively from embankment upper surface；
1. rigid pile design is formulated：According to step 1）Subgrade settlement monitoring result and step 2）Embankment Subsidence monitoring knot
Fruit determines time and rigid pile installation, setting length, diameter and the arrangement of rigid pile construction, rigid pile installation bag
Include CFG, plain concrete pile, precast reinforced concrete piles and cast-in-situ bored pile；
2. rigid pile is set according to related construction of the highway code requirement；
3. sedimentation plate, walking along the street dike settlement monitoring of going forward side by side are installed at the top of the rigid pile of 30m at embankment center line position；
4）The structure sheaf construction of the superiors is carried out after the completion of rigid pile construction above embankment, structure sheaf includes roadbed and road surface：
1. step 3 is treated）After middle embankment settlement monitoring result stabilization, roadbed construction is carried out, roadbed includes lower roadbed and upper roadbed, presses
Design requirement placement in layers roadbed, lower roadbed compactness reaches 93%, and upper roadbed compactness reaches 94%；
2. pavement construction is carried out above roadbed by related construction of the highway code requirement.
2. contrary sequence method composite foundation construction method according to claim 1, it is characterised in that the step 2）Middle layering is filled out
The loose laying depth d of soil meets 8cm≤d≤30cm.
3. contrary sequence method composite foundation construction method according to claim 1, it is characterised in that the step 3）Also include root
Determine whether construction dynamic stiffiness stake according to its Embankment Subsidence monitoring result：When Embankment Subsidence amount exceeds setting value, construction dynamic
Rigid pile；When Embankment Subsidence amount is without departing from setting value, then dynamic stiffiness of not constructing stake.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410426965.7A CN104179105B (en) | 2014-08-27 | 2014-08-27 | A kind of contrary sequence method rigid pile composite foundation construction method |
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| CN201410426965.7A CN104179105B (en) | 2014-08-27 | 2014-08-27 | A kind of contrary sequence method rigid pile composite foundation construction method |
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| CN104179105A CN104179105A (en) | 2014-12-03 |
| CN104179105B true CN104179105B (en) | 2017-06-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040541A (en) * | 2015-07-29 | 2015-11-11 | 成都科创佳思科技有限公司 | Compound type pressure-resistant road bed |
| CN105568806A (en) * | 2015-12-28 | 2016-05-11 | 上海建工一建集团有限公司 | Control method of large-area, large-load terrace differential settlement |
| CN107044076A (en) * | 2017-03-24 | 2017-08-15 | 铁道第三勘察设计院集团有限公司 | A kind of newly built railway rigid road base and its construction method for closing on existing high ferro |
| CN108360321B (en) * | 2018-02-01 | 2023-08-11 | 中交第二公路勘察设计研究院有限公司 | Structure and method for controlling post-construction settlement of fine-grained soil high-fill embankment |
| CN108642985B (en) * | 2018-05-22 | 2020-09-18 | 长安大学 | Rapid environment-friendly pavement based on recycled plastic |
| CN109722967A (en) * | 2018-12-10 | 2019-05-07 | 温州大学瓯江学院 | A kind of road structure preventing soft clay area highway bridgehead vehicle jump and its method |
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| CN1388292A (en) * | 2001-05-28 | 2003-01-01 | 陈光和 | Bridge-road joint constructing method to prevent bump of vehicle at ends of bridge |
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| CN103556554A (en) * | 2013-10-09 | 2014-02-05 | 广州市市政集团有限公司 | Bored pile composite foundation structure used for reinforcing soft foundations of embankment and construction method thereof |
| CN103556552A (en) * | 2013-11-05 | 2014-02-05 | 中国铁建港航局集团有限公司 | Reinforcing method of slightly soft type soft-foundation service road |
| CN203625916U (en) * | 2013-10-16 | 2014-06-04 | 西安科技大学 | Highway soft soil layer composite pile foundation |
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2014
- 2014-08-27 CN CN201410426965.7A patent/CN104179105B/en not_active Expired - Fee Related
Patent Citations (8)
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|---|---|---|---|---|
| CN1388292A (en) * | 2001-05-28 | 2003-01-01 | 陈光和 | Bridge-road joint constructing method to prevent bump of vehicle at ends of bridge |
| JP2007169898A (en) * | 2005-12-19 | 2007-07-05 | Takenaka Komuten Co Ltd | Pile foundation structure for restraining unequal settlement and its construction method |
| CN101538867A (en) * | 2009-02-25 | 2009-09-23 | 叶长青 | Long-short pile composite foundation top-down construction method |
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| CN104179105A (en) | 2014-12-03 |
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