CN206052680U - A kind of gradual change type treatment of soft foundation transition section structure - Google Patents
A kind of gradual change type treatment of soft foundation transition section structure Download PDFInfo
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- CN206052680U CN206052680U CN201620945795.8U CN201620945795U CN206052680U CN 206052680 U CN206052680 U CN 206052680U CN 201620945795 U CN201620945795 U CN 201620945795U CN 206052680 U CN206052680 U CN 206052680U
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- stiffener
- changeover portion
- discharging consolidation
- consolidation
- gradual change
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Abstract
This utility model is related to a kind of gradual change type treatment of soft foundation transition section structure, mainly include composite foundation changeover portion and discharging consolidation changeover portion, linkage section is additionally provided between composite foundation changeover portion and discharging consolidation changeover portion, changeover portion foundation surface is equipped with sand bedding course from bottom to up, subgrade soils and piling prepressing soil, braided geotextile is equipped with the middle of sand bedding course, and it is embedded with some weeper drains for being passed through drainage ditch on both sides of the road, the ground of composite foundation changeover portion has some campshed shape stiffeners of vertical road direction, several rows of water consolidation stiffener is provided between adjacent two campsheds shape stiffener, along the length of the discharging consolidation stiffener of road direction, the thickness of subgrade soils and piling prepressing soil successively decreases toward composite foundation section direction；Discharging consolidation changeover portion is arranged below some row's discharging consolidation stiffeners from sand bedding course to ground, and a campshed shape stiffener is provided between adjacent two rows discharging consolidation stiffener, and the length along the stake shape stiffener of road direction is successively decreased toward discharging consolidation section direction.
Description
Technical field
This utility model is related to Municipal Road Engineering treatment of soft foundation field, more particularly to a kind of gradual change type treatment of soft foundation transition
Segment structure.
Background technology
In Municipal Road Engineering, a road or several roads connecting are sometimes for adopting two or more
Method carry out treatment of soft foundation, the changeover portion of two kinds of treatments of soft foundation receives the dual of road surface dead load and live load afterwards for a long time
Effect so that this changeover portion becomes the weak link of whole road, the especially thicker mud of changeover portion presence, and
Road surface is subject under long-term over loading load action, it is possible that the Vertical Cracks of ground, so that affecting ground superstructure
Quality.By taking two methods of plastic draining board preloading and cement mixing pile as an example, set in the joining place of two kinds of processing methods
The changeover portion of 15m is put, its transition segment process then carries out applying for cement mixing pile first to carry out piling prepressing after the completion for the treatment of precompressed
Work (as shown in Figure 1).The mechanical mixed type changeover portion of this comparison can substantially be regarded one as and be different from both process sides
The mixing entirety section of method, it yet suffers from the phenomenon that stress change is differed with the joining place of two kinds of processing methods, not
Solve problem well.With reference to other substantial amounts of built or projects under construction, and the correlative theses and periodical of various data bases are consulted,
More rational settling mode is not proposed to this problem all, some engineerings are even ignored this problem, do not carry out changeover portion process, i.e. institute
" as hard as crossing " mode of meaning.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of gradual change type treatment of soft foundation transition
Segment structure, improves the changeover portion quality of two kinds for the treatment of of soft foundation linkings.
For achieving the above object, this utility model can be achieved by the following technical programs：
A kind of gradual change type treatment of soft foundation transition section structure, the changeover portion include composite foundation changeover portion and discharging consolidation mistake
Cross section, between the composite foundation changeover portion and discharging consolidation changeover portion, be additionally provided with linkage section, the changeover portion foundation surface from
Down to sand bedding course, subgrade soils and piling prepressing soil is above equipped with, braided geotextile is equipped with the middle of the sand bedding course and is buried
The ground for having some weeper drains for being passed through drainage ditch on both sides of the road, the composite foundation changeover portion has vertical road direction
Some campshed shape stiffeners, several rows of water consolidation stiffener is provided between adjacent two campsheds shape stiffener, along road direction
The thickness of the length, subgrade soils and piling prepressing soil of discharging consolidation stiffener successively decreases toward composite foundation section direction；The draining
Consolidation changeover portion is arranged below some row's discharging consolidation stiffeners from sand bedding course to ground, adjacent two rows discharging consolidation stiffener it
Between be provided with a campshed shape stiffener, the length along the stake shape stiffener of road direction is successively decreased toward discharging consolidation section direction.
Further, the sand bedding course is divided into three layers, and intermediate layer lays one between adjacent two layers sand bedding course than upper and lower thickness
Layer braided geotextile.
Further, the weeper drain is embedded in the intermediate layer of sand bedding course.
Further, the thickness of the subgrade soils and piling prepressing soil is no more than 30cm.
Further, the adjacent stake shape stiffener and discharging consolidation stiffener are equilateral triangle arrangement.
Further, the stake shape stiffener is cement mixing pile, broken stone pile, reinforcing soil pile, Y shape driven cast-in-place pile, thin
One of which in wall cartridge type driven cast-in-place pile and static pressure pipe pile.
Further, the discharging consolidation stiffener is plastic draining board or husky well.
This utility model construction technology is fairly simple, and the gradual change type structure can effectively solve the problem that road surface in long-term sound load
Dual function under there is the phenomenon of Vertical Cracks, it is to avoid the destruction of roadbed superstructure, improve changeover portion this road
The quality of weak link.
Description of the drawings
Fig. 1 is the changeover portion connected structure figure of present technology；
Fig. 2 is changeover portion standard section figure of the present utility model；
Fig. 3 is the partial enlarged drawing of A in Fig. 2；
Fig. 4 is changeover portion linking skiagraph of the present utility model；
Fig. 5 is changeover portion plane arrangement structure figure of the present utility model；
In figure：1- changeover portions, 11- composite foundation changeover portions, 12- discharging consolidation changeover portions, 2- sand bedding courses, 3- subgrade soils,
4- piling prepressings soil, 5- braided geotextiles, 6- weeper drains, 7- drainage ditch, 8- stake shape stiffeners, 9- discharging consolidation stiffeners,
10- composite foundation sections, 20- discharging consolidation sections.
Specific embodiment
This utility model is further described below in conjunction with accompanying drawing and specific embodiment：
As shown in figs. 2 to 4, gradual change type treatment of soft foundation transition section structure described in the utility model, changeover portion 1 include being combined
Ground changeover portion 11 and discharging consolidation changeover portion 12, the company of being additionally provided between composite foundation changeover portion 11 and discharging consolidation changeover portion 12
Connect in section, linkage section and do not set a shape stiffener 8 and discharging consolidation stiffener 9, composite foundation changeover portion 11 is close to composite foundation section
10, discharging consolidation changeover portion 12 is close to discharging consolidation section 20.1 foundation surface of changeover portion is equipped with sand bedding course 2, roadbed from bottom to up
Soil 3 and piling prepressing soil 4, subgrade soils 3 and piling prepressing soil 4 all should layered rolling, be not more than 30cm per thickness degree.Sand bedding course 2
Centre is equipped with braided geotextile 5, and is embedded with some weeper drains 6 for being passed through drainage ditch 7 on both sides of the road, weeper drain 6
Bury one at a certain distance.Sand bedding course 2 is preferably divided into three layers, intermediate layer than upper and lower thickness, between adjacent two layers sand bedding course 2
One layer of braided geotextile 5 of laying, weeper drain 6 are embedded in the intermediate layer of sand bedding course 2.
As shown in figure 4, the ground of composite foundation changeover portion 11 has some row's equal lengths of vertical road direction
Stake shape stiffener 8, is provided with several rows of water consolidation stiffener 9 between adjacent two campsheds shape stiffener 8, along the different rows' of road direction
The thickness of length, subgrade soils 3 and piling prepressing soil 4 of discharging consolidation stiffener 9 successively decrease toward 10 direction of composite foundation section.Row
Water consolidation changeover portion 12 is arranged below the discharging consolidation stiffener 9 of some row's equal lengths, adjacent two row from sand bedding course 2 to ground
A campshed shape stiffener 8 is provided between discharging consolidation stiffener 9, along the length of the stake shape stiffener 8 of the different rows of road direction
Successively decrease toward 20 direction of discharging consolidation section.Stake shape stiffener that later stage is constructed 8 is just through pending ground and reaches at design
Reason depth, without through sand bedding course 2；Discharging consolidation stiffener 9 need to run through ground mud and braided geotextile 5 and go directly sand
Bed course 2.
As shown in figure 5, adjacent studs shape stiffener 8 and discharging consolidation stiffener 9 are equilateral triangle arrangement.
The computational methods of each parameter of this utility model are as follows：1 length of changeover portion is assumed for L, composite foundation transition section length
For L1,12 length of discharging consolidation changeover portion is L2, and connection segment length is L3, then L=L1+L2+L3；Assume to reinforce per horizontally-arranged stake shape
The stake of thing 8 is long to be S1, between row and row pilespacing be R1, the long gradual change amount of stake (i.e. discharging consolidation stiffener 9 between row and row between
Away from) for B2；The plate length that stiffener 9 is consolidated per transversal draining is S2, and plate is away from for R2 between row and row, the long gradual change amount of plate (i.e. stake shape
The spacing between row and row of stiffener 8) for B1；Then
B1 and B2 are the smaller the better in principle, because B1 and B2 are less, which is less because of the settleability residual quantity that stake/plate length is brought, and
It is less plus residual quantity is comprehensively settled caused by other factors, more readily satisfy foundation quality requirement；But B1 and B2 are too small, cause
Changeover portion is oversize, is that construction increased difficulty, it is proposed that value is that 0.1～0.2 times of stake/plate is long.
Composite foundation section 10 can adopt cement mixing pile method；Discharging consolidation section 20 can adopt preloading, also can use true
The methods such as empty precompressed/Combined Vacuum-surcharge Preloading replace.Therefore stake shape stiffener 8 can use cement mixing pile, also can with broken stone pile,
Reinforcing soil pile, Y shape driven cast-in-place pile, thin-walled cartridge type driven cast-in-place pile and static pressure pipe pile etc. it is all kinds of with fashion of extrusion changing ground
The stiffener of bearing capacity replaces；Discharging consolidation stiffener 9 can use plastic draining board, also can be all kinds of with discharging consolidation with Sha Jing etc.
Mode replaces come the stiffener for changing foundation bearing capacity.Sum it up, the stiffener length of two kinds of foundation treatment modes is in transition
Section does the protection model that this structure successively decreased step by step belongs to this utility model claim all along the direction that processes of the opposing party
Within enclosing.
For a person skilled in the art, other can be made various corresponding according to above technical scheme and design
Change and deformation, and all these change and deformation should all belong to this utility model scope of the claims it
It is interior.
Claims (7)
1. a kind of gradual change type treatment of soft foundation transition section structure, it is characterised in that：The changeover portion include composite foundation changeover portion and
Discharging consolidation changeover portion, is additionally provided with linkage section, the changeover portion between the composite foundation changeover portion and discharging consolidation changeover portion
Foundation surface is equipped with sand bedding course, subgrade soils and piling prepressing soil from bottom to up, and braiding geotechnique is equipped with the middle of the sand bedding course
Cloth and some weeper drains for being passed through drainage ditch on both sides of the road are embedded with, the ground of the composite foundation changeover portion has
Some campshed shape stiffeners of vertical road direction, are provided with several rows of water consolidation stiffener between adjacent two campsheds shape stiffener,
The thickness of length, the subgrade soils and piling prepressing soil along the discharging consolidation stiffener of road direction is passed toward composite foundation section direction
Subtract；The discharging consolidation changeover portion is arranged below some row's discharging consolidation stiffeners, adjacent two rows draining from sand bedding course to ground
Consolidation stiffener between be provided with a campshed shape stiffener, along road direction stake shape stiffener length toward discharging consolidation section direction
Successively decrease.
2. gradual change type treatment of soft foundation transition section structure according to claim 1, it is characterised in that：The sand bedding course is divided into three
Layer, intermediate layer lay one layer of braided geotextile than upper and lower thickness, between adjacent two layers sand bedding course.
3. gradual change type treatment of soft foundation transition section structure according to claim 2, it is characterised in that：The weeper drain is buried
In the intermediate layer of sand bedding course.
4. gradual change type treatment of soft foundation transition section structure according to claim 1, it is characterised in that：The subgrade soils and preloading
The thickness of pre- firming is no more than 30cm.
5. gradual change type treatment of soft foundation transition section structure according to claim 1, it is characterised in that：The adjacent stake shape is reinforced
Thing and discharging consolidation stiffener are equilateral triangle arrangement.
6. gradual change type treatment of soft foundation transition section structure according to claim 1, it is characterised in that：The stake shape stiffener is
In cement mixing pile, broken stone pile, reinforcing soil pile, Y shape driven cast-in-place pile, thin-walled cartridge type driven cast-in-place pile and static pressure pipe pile wherein
It is a kind of.
7. the gradual change type treatment of soft foundation transition section structure according to claim 1 or 6, it is characterised in that：The discharging consolidation
Stiffener is plastic draining board or husky well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945795.8U CN206052680U (en) | 2016-08-26 | 2016-08-26 | A kind of gradual change type treatment of soft foundation transition section structure |
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| CN201620945795.8U CN206052680U (en) | 2016-08-26 | 2016-08-26 | A kind of gradual change type treatment of soft foundation transition section structure |
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| CN206052680U true CN206052680U (en) | 2017-03-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185022A (en) * | 2019-07-10 | 2019-08-30 | 中铁二局第一工程有限公司 | A kind of constructing structure and method of plastic draining board and CFG treatment of soft foundation changeover portions |
| CN110952389A (en) * | 2019-12-17 | 2020-04-03 | 同济大学 | Pile combined structure construction method for controlling uneven settlement of transition section of high-speed railway bridge |
| CN111455972A (en) * | 2020-04-10 | 2020-07-28 | 中钢集团马鞍山矿山研究总院股份有限公司 | Comprehensive treatment method for preventing bottom bulging instability of deep and soft foundation waste dump |
| CN111501722A (en) * | 2020-05-21 | 2020-08-07 | 中铁工程设计咨询集团有限公司 | Vacuum preloading and CFG (cement fly-ash gravel) long and short combined pile foundation treatment method |
| CN111519600A (en) * | 2020-04-10 | 2020-08-11 | 中钢集团马鞍山矿山研究总院股份有限公司 | A consolidate and pile structure that is used for dark soft base refuse dump to prevent pucking unstability |
| CN111549750A (en) * | 2020-05-20 | 2020-08-18 | 浙江水利水电学院 | Pond and sluice connection section foundation structure for controlling uneven settlement and construction method thereof |
| CN112921946A (en) * | 2021-01-28 | 2021-06-08 | 武汉大学 | Reinforcing system and reinforcing method for liquefiable site reinforced gravel pile composite foundation embankment |
| CN114575209A (en) * | 2022-03-31 | 2022-06-03 | 浙江数智交院科技股份有限公司 | Road rigid pile and preloading soft foundation treatment transition structure and construction method |
-
2016
- 2016-08-26 CN CN201620945795.8U patent/CN206052680U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185022A (en) * | 2019-07-10 | 2019-08-30 | 中铁二局第一工程有限公司 | A kind of constructing structure and method of plastic draining board and CFG treatment of soft foundation changeover portions |
| CN110952389A (en) * | 2019-12-17 | 2020-04-03 | 同济大学 | Pile combined structure construction method for controlling uneven settlement of transition section of high-speed railway bridge |
| CN111455972A (en) * | 2020-04-10 | 2020-07-28 | 中钢集团马鞍山矿山研究总院股份有限公司 | Comprehensive treatment method for preventing bottom bulging instability of deep and soft foundation waste dump |
| CN111519600A (en) * | 2020-04-10 | 2020-08-11 | 中钢集团马鞍山矿山研究总院股份有限公司 | A consolidate and pile structure that is used for dark soft base refuse dump to prevent pucking unstability |
| CN111549750A (en) * | 2020-05-20 | 2020-08-18 | 浙江水利水电学院 | Pond and sluice connection section foundation structure for controlling uneven settlement and construction method thereof |
| CN111501722A (en) * | 2020-05-21 | 2020-08-07 | 中铁工程设计咨询集团有限公司 | Vacuum preloading and CFG (cement fly-ash gravel) long and short combined pile foundation treatment method |
| CN111501722B (en) * | 2020-05-21 | 2022-06-03 | 中铁工程设计咨询集团有限公司 | Vacuum preloading and CFG (cement fly-ash gravel) long and short combined pile foundation treatment method |
| CN112921946A (en) * | 2021-01-28 | 2021-06-08 | 武汉大学 | Reinforcing system and reinforcing method for liquefiable site reinforced gravel pile composite foundation embankment |
| CN114575209A (en) * | 2022-03-31 | 2022-06-03 | 浙江数智交院科技股份有限公司 | Road rigid pile and preloading soft foundation treatment transition structure and construction method |
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