CN102979031B - A kind of processing method of vehicle jumping at bridge head of highway and process structure - Google Patents
A kind of processing method of vehicle jumping at bridge head of highway and process structure Download PDFInfo
- Publication number
- CN102979031B CN102979031B CN201110262498.5A CN201110262498A CN102979031B CN 102979031 B CN102979031 B CN 102979031B CN 201110262498 A CN201110262498 A CN 201110262498A CN 102979031 B CN102979031 B CN 102979031B
- Authority
- CN
- China
- Prior art keywords
- pile
- piles
- pile foundation
- clump
- abutment
- 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.)
- Active
Links
Abstract
The invention provides a kind of processing method and structure of vehicle jumping at bridge head of highway, according to road surface load and foundation condition, design the clump of piles variation rigidity scheme meeting end of the bridge requirement of settlement control, common bored pile is adopted to carry out stiffening basic ground, improve the bearing capacity of superficial part ground and reduce settling amount, by being provided with enlarged footing and the method that enlarged footing quantity on a clump of piles reduces gradually realizes clump of piles pile foundation nonuniform mutation operator on a clump of piles, form the smooth-going change of Group Pile Foundation rigidity.The present invention compared with prior art, not only effectively solves problem of bumping at bridge-head, and construction installation is simple with work progress, construction cost is low, relative low to the stake requirement of strength of Group Pile Foundation.
Description
Technical field
The present invention relates to processing method and the process structure of vehicle jumping at bridge head of highway, belong to control vehicle jumping at bridge head of highway field.
Background technology
Along with the development of China's speedway, bumping at bridge-head shortens the application life of the vehicles, and affect traffic safety, bumping at bridge-head has become an internationally recognized traffic technique difficult problem.Under normal circumstances, there is not sedimentation in abutment ground, therefore bumping at bridge-head is mainly because uneven settlement of foundation causes highway end of the bridge to occur faulting of slab ends, road pavement structure can cause harmful effect and even destruction, the not high and unreal vehicle bump at bridge ends that also can cause that bankets of the resistance to shock of foundation stiffness sudden change in addition, the speed of a motor vehicle and vehicle itself occurs.The basic reason of bumping at bridge-head is wherein caused to be that junction between flexible pavement from rigid structure is because of the different uneven sedimentation of rigidity, faulting of slab ends is produced between ground and abutment, thus enabling two to dock different in kind pavement system its rigidity smoothly transition in resistance to vertical deformation, is the key resolving bumping at bridge-head.The method of the multiple solution bumping at bridge-head that current domestic highway division and R&D institution adopt, to Soft foundation treatment, now domestic have: the common methods such as cushion, surcharge preloading, plastic draining board, DJM pile compound foundation.
Tradition Soft Soil Subgrade Treatment Method effectively cannot set up the rigidity smoothly transition of abutment to roadbed, and stiffness variation measure is few.The vehicle jumping at bridge head of highway processing method that a kind of rigid composite foundation by being alternately arranged by long stake and stub changed foundation stiffness in recent years is progressively applied in the construction of speedway, this processing method solves ground and the smooth-going excessive problem of Abutment stiffness, but the long-short pile requirement of strength applied in this processing method is higher, construction installation and work progress are comparatively complicated, construction cost is relatively high.
So, be necessary that above-mentioned vehicle jumping at bridge head of highway processing method is existed that long-short pile requirement of strength is higher, construction installation and work progress is comparatively complicated, construction cost is relatively high etc. that problem is further improved, to avoid the problems referred to above.
Summary of the invention
The present invention proposes for solving the above-mentioned problems in the prior art, its object is to provide one both to efficiently solve problem of bumping at bridge-head, and construction installation is simple with work progress, construction cost is low, to the processing method of the relative low vehicle jumping at bridge head of highway of the stake requirement of strength of Group Pile Foundation and process structure.
The processing method of the vehicle jumping at bridge head of highway that the present invention relates to, it comprises the following steps: (1) between rigidity abutment and flexible roadbed, arrange transition ground; (2) after pouring pile hole, the cavity of clump of piles pile body adopts mechanical rotary-cut, mode that is squeezed and that ram forms enlarged footing, then concrete perfusion, filled foundation, complete the Group Pile Foundation changing rigidity, wherein, described Group Pile Foundation points to the other end from the one end near described abutment, and the described enlarged footing quantity on a clump of piles reduces gradually; (3) construct at abutment and drive piles technique and fill abutment, complete Pile Foundation ' on Abutment; (4) filling roadbed; And (5) fill out and pave.
In addition, the process structure of a kind of vehicle jumping at bridge head of highway that the present invention relates to, comprises Pile Foundation ' on Abutment, road surface, roadbed and Group Pile Foundation, and Group Pile Foundation is positioned at below roadbed, wherein, a clump of piles for described Group Pile Foundation is provided with enlarged footing; Described Group Pile Foundation points to the other end from the one end near described abutment, and the enlarged footing quantity on a clump of piles reduces gradually.
In addition, preferably, the clump of piles changed described in the Group Pile Foundation of rigidity is bored pile; Stake in described Pile Foundation ' on Abutment is preformed pile or castinplace pile.
In addition, preferably, according to the stiffness variation requirement of ground, the position of described enlarged footing and variable amounts.
In addition, preferably, the distance between any two the described enlarged footings on every pile is more than 2 times of diameters of the major diameter enlarged footing in these two enlarged footings.
Moreover preferably, in described Group Pile Foundation, the distance between any two piles is more than 3 times of diameters of large diameter pile in this two pile.
As mentioned above, according to the processing method of vehicle jumping at bridge head of highway of the present invention, a clump of piles for wherein Group Pile Foundation is provided with enlarged footing, Group Pile Foundation points to the other end from the one end near abutment, enlarged footing quantity on a clump of piles reduces gradually, oil and pile with expanded hole is closely knit in conjunction with common load effect, so namely, the rigidity realizing clump of piles pile foundation and Pile Foundation ' on Abutment is excessively smooth-going, also solving existing vehicle jumping at bridge head of highway treatment system while solving problem of bumping at bridge-head, to there is long-short pile requirement of strength higher, construction installation and work progress are comparatively complicated, the problems such as construction cost is relatively high.
Accompanying drawing explanation
By being described embodiment below in conjunction with accompanying drawing, above-mentioned characteristic sum technological merit of the present invention will become apparent and easy understand.
Fig. 1 is the flow chart of the processing method of vehicle jumping at bridge head of highway;
Fig. 2 is the schematic diagram of the process structure representing vehicle jumping at bridge head of highway.
Description of reference numerals
1, Pile Foundation ' on Abutment;
2, road surface;
3, general subgrade;
4, enlarged footing;
5, Group Pile Foundation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further detailed description is done to the present invention.
In the following description, mode only by illustrating is described some example embodiment of the present invention, undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise described embodiment with various different modes.Therefore, accompanying drawing and be described in just illustrative in essence, instead of for limiting the protection domain of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Fig. 1 is the flow chart of the processing method of vehicle jumping at bridge head of highway.As shown in Figure 1, in step S110, according to road surface load and foundation condition, first the clump of piles variation rigidity scheme meeting end of the bridge requirement of settlement control is designed, then between rigidity abutment and general subgrade 3, arrange a transitional region, what be used for realizing between rigidity abutment and general subgrade 3 is excessively submissive.
In step S120, adopt drilling pouring pile hole, clear up smooth construction plant, the particular location of stake is determined according to scheme, the distance ensureing between any two piles is more than three times of diameters of large diameter pile in this two pile, buries underground and protects a barrel spud pile hole site, slurrying pore-forming.After pouring pile hole, sediment in cleaning eye, the cavity of clump of piles pile body adopts mechanical rotary-cut, mode that is squeezed and that ram forms enlarged footing 4, Group Pile Foundation 5 points to the other end from the one end near described abutment, enlarged footing 4 quantity on a clump of piles reduces gradually, and ensure the distance on every pile between any two enlarged footings 4, be more than the double diameter of the major diameter enlarged footing 4 in these two enlarged footings 4.Then reinforcing cage is transferred, fluid concrete pile, enlarged footing 4 surrounding soil and enlarged footing 4 and pile body are closely as one, and effectively play the common load effect of stake soil, then with aggregate chips bed course, sand cushion, mixing dirt filled foundation tamping, the Group Pile Foundation 5 changing rigidity is namely completed.In addition according to the difference of clump of piles variation rigidity scheme, position and the quantity of enlarged footing 4 can be changed.
Then, step S130, at rigidity abutment construction drill castinplace pile, tube-sinking cast-in-situ pile or preformed pile, also tamps with aggregate chips bed course, sand cushion, mixing dirt filled foundation and fills abutment and tamp, namely complete Pile Foundation ' on Abutment 1.
Afterwards, step S140, builds general subgrade 3 with soil or building stones.
Finally, step S150, fills out with the material such as bituminous concrete, cement concrete and paves 2 and tamp.
Fig. 2 is the schematic diagram of the process structure representing vehicle jumping at bridge head of highway.As shown in Figure 2, the process structure of vehicle jumping at bridge head of highway comprises employing preformed pile or castinplace pile is Pile Foundation ' on Abutment 1, road surface 2, the general subgrade 3 of pile foundation and adopts bored pile to change the Group Pile Foundation 5 of STIFFNESS BOTH THE BASE, and Group Pile Foundation 5 is positioned at below roadbed 2.A clump of piles is provided with mechanical rotary-cut, enlarged footing 4 that mode that is squeezed and that ram is formed, Group Pile Foundation 5 points to the other end from the one end near abutment, and enlarged footing 4 quantity on a clump of piles reduces gradually.Distance on every pile between any two enlarged footings 4, it is more than the double diameter of the major diameter enlarged footing 4 in these two enlarged footings 4, and the difference of the stiffness variation scheme according to ground, can realize the change of Group Pile Foundation rigidity by change enlarged footing 4 position changeable and quantity.
It should be noted that in addition, in Group Pile Foundation 5, the distance between any two piles is more than 3 times of diameters of large diameter pile in this two pile.
Enlarged footing 4 can make full use of the hardpan at pile body each position up and down, and from the one end near abutment, point to the other end by Group Pile Foundation 5, the mode that enlarged footing 4 quantity on a clump of piles reduces gradually changes the common force-mechanism waiting bored pile, add the bottom bearing of soil, improve the ability of resistance to compression, resistance to plucking, stake soil rigidity is improved jointly, thus substantially reduces break and the settlement after construction on basis.The damping action of enlarged footing 4 effectively can control the vibration that ground under dynamic loading bankets, and reduce the subsidiary stress of banketing to foundation soil and stake, foundation settlement is little, stable period is short simultaneously.
The invention is further illustrated by the following examples.
Embodiment, the excessive segment length of certain grade separation end of the bridge 70 meters, ground level about 3 meters, the depth of fill 2 ~ 4 meters, has the clay that 11 ~ 12 meters thick under ground.
End of the bridge process range length is 60m, variation rigidity Group Pile Foundation is positioned at end of the bridge process range, roadbed is pointed to from abutment, Group Pile Foundation is divided into 4 regions by 15 meters of intervals, long 20 meters of its king-pile, stake 0.7 meter, footpath, enlarged footing diameter 1.6 meters, the quantity of 4 region single pile enlarged footings is followed successively by 4,3,2,1 and successively decreases.
Under above-mentioned instruction of the present invention; those skilled in the art can carry out improving the present invention on the basis of above-described embodiment; and these improve; all drop in the protection domain of invention; those skilled in the art should be understood that; above-mentioned specific descriptions just explain object of the present invention better, and protection scope of the present invention is by claim and equivalents thereof.
Claims (6)
1. a processing method for vehicle jumping at bridge head of highway, is characterized in that, comprises the following steps:
(1) transition ground is set between rigidity abutment and flexible roadbed;
(2) after pouring pile hole, the cavity of clump of piles pile body adopts mechanical rotary-cut, mode that is squeezed and that ram forms enlarged footing, then concrete perfusion, filled foundation, complete the Group Pile Foundation changing rigidity, wherein, described Group Pile Foundation points to the other end from the one end near described abutment, and the described enlarged footing quantity on a clump of piles reduces gradually; In described Group Pile Foundation, the distance between any two piles is more than 3 times of diameters of large diameter pile in this two pile, and the distance between any two the described enlarged footings on every pile is more than 2 times of diameters of the major diameter enlarged footing in these two enlarged footings;
(3) construct at abutment and drive piles technique and fill abutment, complete Pile Foundation ' on Abutment;
(4) filling roadbed; And
(5) fill out and pave.
2., according to the processing method of vehicle jumping at bridge head of highway according to claim 1, it is characterized in that:
The described clump of piles changed in the Group Pile Foundation of rigidity is bored pile;
Stake in described Pile Foundation ' on Abutment is preformed pile or castinplace pile.
3., according to the processing method of vehicle jumping at bridge head of highway according to claim 1, it is characterized in that:
According to the stiffness variation requirement of ground, the position of described enlarged footing and variable amounts.
4. a process structure for vehicle jumping at bridge head of highway, comprises Pile Foundation ' on Abutment, road surface, roadbed and Group Pile Foundation, and Group Pile Foundation is positioned at below roadbed, it is characterized in that:
In described Group Pile Foundation, the distance between any two piles is more than 3 times of diameters of large diameter pile in this two pile; And on a clump of piles for described Group Pile Foundation, be provided with enlarged footing; Wherein, the distance between any two the described enlarged footings on every pile is more than 2 times of diameters of the major diameter enlarged footing in these two enlarged footings;
Described Group Pile Foundation points to the other end from the one end near described abutment, and the enlarged footing quantity on a clump of piles reduces gradually.
5., according to the process structure of vehicle jumping at bridge head of highway according to claim 4, it is characterized in that:
A clump of piles in described Group Pile Foundation is bored pile;
Stake in described Pile Foundation ' on Abutment is preformed pile or castinplace pile.
6., according to the process structure of vehicle jumping at bridge head of highway according to claim 4, it is characterized in that:
According to the stiffness variation requirement of ground, the position of described enlarged footing and variable amounts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110262498.5A CN102979031B (en) | 2011-09-06 | 2011-09-06 | A kind of processing method of vehicle jumping at bridge head of highway and process structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110262498.5A CN102979031B (en) | 2011-09-06 | 2011-09-06 | A kind of processing method of vehicle jumping at bridge head of highway and process structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979031A CN102979031A (en) | 2013-03-20 |
| CN102979031B true CN102979031B (en) | 2015-09-09 |
Family
ID=47853356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110262498.5A Active CN102979031B (en) | 2011-09-06 | 2011-09-06 | A kind of processing method of vehicle jumping at bridge head of highway and process structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102979031B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179105B (en) * | 2014-08-27 | 2017-06-13 | 中国地质大学（武汉） | A kind of contrary sequence method rigid pile composite foundation construction method |
| CN109763390A (en) * | 2019-01-18 | 2019-05-17 | 广西交通设计集团有限公司 | A kind of reinforced rigid pile composite foundation structure |
| CN113512945B (en) * | 2021-04-20 | 2023-05-05 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting section |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10121491A (en) * | 1996-10-23 | 1998-05-12 | Fujita Corp | Assembly engineering method for foundation beam reinforcement |
| CN1298991A (en) * | 2001-01-18 | 2001-06-13 | 北京市机械施工公司 | Pile forming method by drilling, enlarging, pressure-grouting and filling |
| KR100926300B1 (en) * | 2009-03-10 | 2009-11-12 | 주식회사 반석티비에스 | Foundation structure reinfoeced by pile and the construction method for the same |
| CN102051861A (en) * | 2009-11-02 | 2011-05-11 | 郑州优特基础工程维修有限公司 | Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
-
2011
- 2011-09-06 CN CN201110262498.5A patent/CN102979031B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10121491A (en) * | 1996-10-23 | 1998-05-12 | Fujita Corp | Assembly engineering method for foundation beam reinforcement |
| CN1298991A (en) * | 2001-01-18 | 2001-06-13 | 北京市机械施工公司 | Pile forming method by drilling, enlarging, pressure-grouting and filling |
| KR100926300B1 (en) * | 2009-03-10 | 2009-11-12 | 주식회사 반석티비에스 | Foundation structure reinfoeced by pile and the construction method for the same |
| CN102051861A (en) * | 2009-11-02 | 2011-05-11 | 郑州优特基础工程维修有限公司 | Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102979031A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204401447U (en) | A kind of structure preventing bumping at bridge-head | |
| CN102979020A (en) | Method and structure used for handling highway bridgehead bumping problem | |
| CN203174453U (en) | Light-mass embankment structure for managing bump at bridge head | |
| CN204919635U (en) | Bridge foundation reinforced structure | |
| CN104746501A (en) | Treatment method and structure of bridge-head foundation sliding settlement | |
| CN110700291A (en) | Combined retaining structure and construction method thereof | |
| CN104179105B (en) | A kind of contrary sequence method rigid pile composite foundation construction method | |
| CN103074882A (en) | Construction method for reinforcing island-type perennial frozen-soil foundation by adopting gravel piles | |
| CN106676993B (en) | Reinforced broken stone frame structure roadbed reinforcing system and reinforcing method thereof | |
| CN102979031B (en) | A kind of processing method of vehicle jumping at bridge head of highway and process structure | |
| CN103046446A (en) | Treatment structure at joint part of reconstruction and extension project of highway | |
| CN103572679B (en) | A kind of embankment structure and dam filling construction reducing bumping at bridge-head incidence | |
| CN101838957A (en) | Integral type T-shaped outer cantilever roads and construction method thereof | |
| CN203334154U (en) | Embankment structure for preventing bearing platform of pile foundation from stretching in roadbed under viaduct | |
| CN111379253A (en) | Construction method for high-speed railway expanded cement slurry post-grouting discrete material pile composite foundation | |
| CN204401485U (en) | The construction structure of high roadbed draining Steel Corrugated Pipe Culvert | |
| CN107815937B (en) | Branch's dam filling construction of Expressway Widening roadbed | |
| CN203270559U (en) | Roadbed structure of screw pile network structure composite foundation | |
| CN203034328U (en) | Joint part treatment structure of reconstruction and extension project of expressway | |
| CN111809470A (en) | Structure and method for preventing cracks of road base layer and road subbase layer | |
| CN203795260U (en) | New roadbed and old roadbed combined road structure | |
| CN109577307A (en) | Combination of rigidity and flexibility stake and its construction method | |
| CN105544334B (en) | One kind is used for vehicle jumping at bridge head of highway Treatment Methods | |
| CN209636780U (en) | Composite pile | |
| CN203160089U (en) | Anti-settling bridgehead slope structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100085, Beijing, Beijing economic and Technological Development Zone, Kangding street, No. 1, 2, six or seven, Daxing District Patentee after: MCC COMMUNICATION CONSTRUCTION GROUP CO., LTD. Address before: 100176, Daxing District economic and Technological Development Zone, Kangding street, No. 1, 2, six, seven, Patentee before: MCC Communication Engineering Technology Co., Ltd. |