CN107956194A - Ensure the soft soil roadbed structure and construction method of roadbed reclamation - Google Patents
Ensure the soft soil roadbed structure and construction method of roadbed reclamation Download PDFInfo
- Publication number
- CN107956194A CN107956194A CN201711439805.6A CN201711439805A CN107956194A CN 107956194 A CN107956194 A CN 107956194A CN 201711439805 A CN201711439805 A CN 201711439805A CN 107956194 A CN107956194 A CN 107956194A
- Authority
- CN
- China
- Prior art keywords
- foundation
- pile
- foundation pile
- soft soil
- roadbed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
Abstract
The present invention relates to a kind of soft soil roadbed structure and construction method for ensureing roadbed reclamation, Soft Soil Layer, sandstone mattress layer and embankment are followed successively by from top to bottom, several foundation piles are distributed with Soft Soil Layer, sandstone mattress layer is stretched on the stake top head of foundation pile, the concrete connection beam that the stake top head of all foundation piles is arranged by transverse and longitudinal, which pours, connects into an entirety, and concrete linking beam top is without departing from foundation pile top, lower part below foundation pile top in the range of 30 50cm.The present invention constrains the Free Transform of pile crown under inter-pile soil load action, improves the integral anti-shearing ability of pile foundation, has ensured embankment stability, easy for construction, does not influence foundation pile normal work.
Description
Technical field
The invention belongs to engineering construction field, and in particular to a kind of soft soil roadbed structure and construction party for ensureing roadbed reclamation
Method.
Background technology
Road is built in soft clay area, often using cement injection pile, mixing pile or CFG a Ground Treatment.Due to Soft Soil Layer
Thicker, the shape thickness soil bearing capacity of ground is relatively low, when embankment is higher, although ground meets design carrying during detection of compound foundation
The requirement of power, but in use, increase over time, highway embankment will also tend to that there is a phenomenon where cut sliding destruction.Work
Journey is put into practice and scientific experiment shows：In soft clay area, embankment cut it is sliding destroy it is often soft soil roadbed in a certain pile first by
Curved scissors breaks, then has several constantly to fracture, and clump of piles cutting can then occur, so the entirety that embankment occurs it is sliding break it is bad, it is this existing
As the main reason for be that roadbed is flexible structure, be exactly often subgrade soils on the sandstone mattress layer in composite foundation, because thick between stake
Shape bearing capacity of foundation slab is relatively low, under the action of embankment, the larger shearing to stake top position can be formed, because of such foundation pile
Shearing resistance, bending resistance is poor, so above-mentioned breakoff phenomenon will be formed.
The content of the invention
The object of the present invention is to provide a kind of soft soil roadbed structure and construction method for ensureing roadbed reclamation, present invention constraint
The Free Transform of pile crown, improves the integral anti-shearing ability of pile foundation, has ensured embankment stability, applied under inter-pile soil load action
Work is convenient, does not influence foundation pile normal work.
The technical solution adopted in the present invention is：
A kind of soft soil roadbed structure for ensureing roadbed reclamation, is followed successively by Soft Soil Layer, sandstone mattress layer and embankment from top to bottom,
Several foundation piles are distributed with Soft Soil Layer, sandstone mattress layer is stretched on the stake top head of foundation pile, and the stake top head of all foundation piles passes through
The concrete connection beam of transverse and longitudinal arrangement, which pours, connects into an entirety, and concrete linking beam top is without departing from foundation pile top, lower part
Below foundation pile top in the range of 30-50cm.
Further, all concrete connection beams contact beam forms formed by integrally casting by knockdown concrete and shape.
Further, foundation pile is cement injection pile, mixing pile or CFG.
A kind of Construction of Soft Soil Subgrade method for ensureing roadbed reclamation, first beats foundation pile in Soft Soil Layer, then clears up the stake of foundation pile
Top portion, makes stake top head expose 30-50cm and reserves the space of casting concrete connection beam, then sets concrete to contact
Beam forms, concrete contact beam forms are arranged for gang form in transverse and longitudinal, and concrete connection beam die head absolute altitude is without departing from base
Stake top end and all piles top portion is surrounded, then casting concrete connection beam, pours and be laid with sandstone mattress layer after completing form removal,
Finally build embankment.
The beneficial effects of the invention are as follows：
All piles top portion is connected as an entirety by the present invention by concrete connection beam, constrains inter-pile soil load to make
With the Free Transform of lower pile crown, the integral anti-shearing ability of pile foundation is improved, has ensured embankment stability.Concrete connection beam is not
It is overlapped on foundation pile, but pours and be integrated and without departing from foundation pile top, there are two advantages, one is construction party with foundation pile
Just, only template need to be set, it is not necessary to which the fluting and protrusion for overlapping are set, it is not necessary to installation accuracy is worried, the other is axial carry
Lotus is undertaken by foundation pile, and concrete connection beam only serves the effect for improving integral anti-shearing ability, prevent concrete connection beam axial by
Conquassation foundation pile when power is uneven, does not influence foundation pile normal work；By controlling the thickness range of concrete connection beam, when preventing too small
The natural subsidence of foundation pile is destroyed when integrated connection property is not strong and excessive, does not influence foundation pile normal work.
Brief description of the drawings
Fig. 1 is the sectional view of road structure in the embodiment of the present invention.
Fig. 2 is the top view of foundation pile and concrete connection beam in the embodiment of the present invention.
In figure：1- embankments；2- concrete connection beams；3- sandstone mattress layers；4- foundation piles；5- Soft Soil Layers.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, it is a kind of ensure roadbed reclamation soft soil roadbed structure, be followed successively by from top to bottom Soft Soil Layer 5,
Sandstone mattress layer 3 and embankment 1, are distributed with several foundation piles 4 in Soft Soil Layer 5, and sandstone mattress layer 3 is stretched on the stake top head of foundation pile 4,
The concrete connection beam 2 that the stake top head of all foundation piles 4 is arranged by transverse and longitudinal, which pours, connects into an entirety, concrete linking beam
2 tops are without departing from 4 top of foundation pile, lower part below 4 top of foundation pile in the range of 30-50cm.The present invention construction method be：First exist
Soft Soil Layer 5 beats foundation pile 4, then clears up stake top head, pile crown is exposed 30-50cm and reserve casting concrete connection beam 2
Space, then sets concrete to contact beam forms, and concrete contact beam forms is arranged for gang form in transverse and longitudinal, concrete contact
Beam forms elevation of top is surrounded without departing from 4 top of foundation pile and by all piles top portion, and then casting concrete connection beam 2, pours
Sandstone mattress layer 3 is laid with after completing form removal, finally builds embankment 1.
All piles top portion is connected as an entirety by the present invention by concrete connection beam 2, constrains inter-pile soil load
The Free Transform of the lower pile crown of effect, improves the integral anti-shearing ability of pile foundation 4, has ensured 1 stability of embankment.Concrete connection beam
2 are not overlapped on foundation pile 4, but pour and be integrated and without departing from 4 top of foundation pile, there are two advantages, one is with foundation pile 4
It is easy for construction, only template need to be set, it is not necessary to which the fluting and protrusion for overlapping are set, it is not necessary to worry installation accuracy, the other is
Axial load is undertaken by foundation pile 4, and concrete connection beam 2 plays the role of improving integral anti-shearing ability, prevents concrete connection beam 2
Conquassation foundation pile 4, does not influence foundation pile 4 and works normally when axially loaded is uneven；By controlling the thickness range of concrete connection beam 2,
The natural subsidence of foundation pile 4 is destroyed when integrated connection property is not strong and excessive when preventing too small, foundation pile 4 is not influenced and works normally.
In the present embodiment, all concrete connection beams 2 by knockdown concrete contact beam forms formed by integrally casting into
Shape, formed by integrally casting rather than individually pours one by one, efficient, it is important to which that integrated connection property is good.Foundation pile 4 is cement injection pile, stirring
Stake or CFG.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (4)
1. a kind of soft soil roadbed structure for ensureing roadbed reclamation, is followed successively by Soft Soil Layer, sandstone mattress layer and embankment from top to bottom, soft
Several foundation piles are distributed with soil layer, sandstone mattress layer is stretched on the stake top head of foundation pile, it is characterised in that：The stake top of all foundation piles
The concrete connection beam that head is arranged by transverse and longitudinal, which pours, connects into an entirety, and concrete linking beam top is without departing from foundation pile top
End, lower part are below foundation pile top in the range of 30-50cm.
2. the soft soil roadbed structure of roadbed reclamation is ensured as claimed in claim 1, it is characterised in that：All concrete connection beams
Beam forms formed by integrally casting is contacted by knockdown concrete to shape.
3. the soft soil roadbed structure of roadbed reclamation is ensured as claimed in claim 1, it is characterised in that：Foundation pile is Investigation of Cement Powder Spray
Stake, mixing pile or CFG.
A kind of 4. Construction of Soft Soil Subgrade method for ensureing roadbed reclamation, it is characterised in that：Foundation pile first is beaten in Soft Soil Layer, is then cleared up
The stake top head of foundation pile, makes stake top head expose 30-50cm and reserves the space of casting concrete connection beam, then sets mixed
Solidifying soil contact beam forms, concrete contact beam forms are arranged for gang form in transverse and longitudinal, concrete connection beam die head absolute altitude
Surrounded without departing from foundation pile top and by all piles top portion, then casting concrete connection beam, pour and be laid with sand after completing form removal
Stone bed pad layer, finally builds embankment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439805.6A CN107956194A (en) | 2017-12-25 | 2017-12-25 | Ensure the soft soil roadbed structure and construction method of roadbed reclamation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439805.6A CN107956194A (en) | 2017-12-25 | 2017-12-25 | Ensure the soft soil roadbed structure and construction method of roadbed reclamation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107956194A true CN107956194A (en) | 2018-04-24 |
Family
ID=61955664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711439805.6A Pending CN107956194A (en) | 2017-12-25 | 2017-12-25 | Ensure the soft soil roadbed structure and construction method of roadbed reclamation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107956194A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042219A (en) * | 2019-11-21 | 2020-04-21 | 辽宁省交通高等专科学校 | Method for determining thickness of mattress layer of CFG pile composite foundation similar model test |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566825A (en) * | 1984-03-21 | 1986-01-28 | Toa Harbor Works Co., Ltd. | Method of hardening soft ground |
| CN103334357A (en) * | 2013-06-07 | 2013-10-02 | 上海嘉实（集团）有限公司 | Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method |
| CN106049350A (en) * | 2016-07-26 | 2016-10-26 | 浙江省水利水电勘测设计院 | Anti-seepage seawall with pile foundation framework rib plate structures |
| CN205676911U (en) * | 2016-06-03 | 2016-11-09 | 苏州规划设计研究院股份有限公司 | A kind of skyscraper pipe pile foundation being applicable to weak soil place |
| 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 |
| CN109537616A (en) * | 2018-11-26 | 2019-03-29 | 广西万科企业管理有限公司 | A kind of the CFG stake device and its construction method of spiral-digging pore |
-
2017
- 2017-12-25 CN CN201711439805.6A patent/CN107956194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566825A (en) * | 1984-03-21 | 1986-01-28 | Toa Harbor Works Co., Ltd. | Method of hardening soft ground |
| CN103334357A (en) * | 2013-06-07 | 2013-10-02 | 上海嘉实（集团）有限公司 | Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method |
| CN205676911U (en) * | 2016-06-03 | 2016-11-09 | 苏州规划设计研究院股份有限公司 | A kind of skyscraper pipe pile foundation being applicable to weak soil place |
| CN106049350A (en) * | 2016-07-26 | 2016-10-26 | 浙江省水利水电勘测设计院 | Anti-seepage seawall with pile foundation framework rib plate structures |
| 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 |
| CN109537616A (en) * | 2018-11-26 | 2019-03-29 | 广西万科企业管理有限公司 | A kind of the CFG stake device and its construction method of spiral-digging pore |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042219A (en) * | 2019-11-21 | 2020-04-21 | 辽宁省交通高等专科学校 | Method for determining thickness of mattress layer of CFG pile composite foundation similar model test |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101368383B (en) | Method for treating soft soil roadbed by artificial composite crust layer | |
| CN106437789B (en) | A kind of tunnel-liner waterproof connector | |
| CN107805987A (en) | The hassock layer Foam lightweight soil road structure and construction method in deep soft foundation section | |
| CN203834511U (en) | Bolting-grouting retaining wall with specially-shaped section | |
| CN101736738A (en) | Pressure resistance and pull-out resistance grouted gravel pile | |
| CN107956194A (en) | Ensure the soft soil roadbed structure and construction method of roadbed reclamation | |
| JP2015031119A (en) | Ground reinforcement structure | |
| CN207295358U (en) | A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure | |
| CN206467512U (en) | Foundation in deep soft sediment section road and bridge connected structure | |
| CN206173977U (en) | Injection rubber gathers materials and thoughtlessly congeals soil slope supporting construction | |
| CN109778788A (en) | The design of rigid concrete cut-pff wall and construction method on a kind of deep covering layer | |
| CN103821038A (en) | Repairing and reinforcing structure for upwarping of high-speed railway subgrade | |
| CN108824097A (en) | Prefabricated GFRP pipe concrete stake and armoured concrete slab overhead type roadbed pile slab structure | |
| CN207760679U (en) | Ensure the soft soil roadbed structure of roadbed reclamation | |
| CN108179757A (en) | The pile foundation structure and construction method of high gradient slope containing study on weak faults | |
| CN108277800A (en) | A kind of consolidation layer of sand concrete reinforced pipe section broken stone pile and its construction method | |
| CN207919491U (en) | A kind of bank slope ecological safeguard structure | |
| CN102839647A (en) | Stirring pile-permeable concrete pile compound foundation and treatment method thereof | |
| CN203361182U (en) | Unequal-length bottom-expanded rock anchor pile of power transmission pole tower | |
| JP5525510B2 (en) | How to prevent or repair asphalt pavement | |
| CN109468943A (en) | The anti-ejection system of vertical prestressed reinforcement and its construction method with function of seismic resistance | |
| CN107130617A (en) | A kind of flat pressure dispersing anchorage cable wall retaining structure of rock matter cut slope | |
| CN209652671U (en) | A kind of improvement road structure | |
| CN205062806U (en) | Bridge pile foundation structure of reinforced earth retaining wall within range | |
| CN209456823U (en) | A kind of porous base course |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |