CN207295358U - A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure - Google Patents
A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure Download PDFInfo
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- CN207295358U CN207295358U CN201721149506.4U CN201721149506U CN207295358U CN 207295358 U CN207295358 U CN 207295358U CN 201721149506 U CN201721149506 U CN 201721149506U CN 207295358 U CN207295358 U CN 207295358U
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Abstract
The utility model discloses a kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure, its rubble drainage layer for including setting gradually from lower to upper, the platform back of the body, attachment strap basic unit, attachment strap, bituminous concrete, the platform that rubble drainage layer is arranged on compacting to carry on the back in substrate；Platform knapsack includes the multilayer platform back of the body packing layer set gradually from top to bottom, and steel wire is provided between every layer of bridge back filling layer；Platform is carried on the back forming roadbed digging step between roadbed；By attachment strap basic unit, rubble french drain is equipped with road structure layer；Attachment strap is arranged on road-bridge transition section, and bituminous concrete is flushed with upper road surface.The utility model can solve the Bridgehead-Jumping Disease produced by the problems such as platform carries on the back settlement and Water Damage, improve road-ability, ensure the service life of transition road section surface.
Description
Technical field
The utility model belongs to road engineering road-bridge transition section Prevention of Bump at End of Bridge technical field, and in particular to a kind of
Prevent the platform back of the body and road surface drainage structure of bumping at bridge-head.
Background technology
In road operational process, road and bridge connect section occur Bridgehead-Jumping Disease be always perplex engineers and technicians difficulty
One of topic.Solving problem of vehicle bump at bridge head, is the vital task of road engineering technical staff and road management department.
Research shows that the origin cause of formation of Bridgehead-Jumping Disease mainly has following several respects：1st, abutment and embankment structural differences, abutment
With very big overall stiffness, the pile foundation processing of lower part can be ignored abutment sedimentation, and being deposited in for embankment is open to traffic very
Just gradually settled out after long-time；2nd, backfilling material compaction deformation, high-filled subgrade, the compaction deformation of backfilling material are carried on the back for platform
It is the chief component of platform back of the body sedimentation, the backfilling material that selection intensity is high, rigidity is big, water stability is good can reduce back filling behind abutment
Plastic deformation；3rd, foundation settlement deformation, soft soil foundation consolidation deformation after treatment reduce, but settle still inevitable；
4th, Water Damage, rainwater penetrate into road surface structare layer and soil matrix through seam or crack, cause fine granules to be lost in and increase structure sheaf and soil
The water content of base, reduces the bearing capacity of ground, accelerates the development of differential subsidence.
Generally use sets transition slab at bridge head to slow down the generation of relative settlement at present, but such a method mainly will jump car
Position is transferred to attachment strap and roadbed section joint, and it is limited to carry on the back itself excessive sedimentation relief capabilities to platform, while is difficult to effectively prevent
Vehicle bump caused by Water Damage.
Utility model content
The purpose of this utility model is to provide a kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure, the structure energy
The Bridgehead-Jumping Disease produced by the problems such as platform carries on the back settlement and Water Damage is solved, improves road-ability, ensures road and bridge
The service life of transition road section surface.
Technical solution is used by the utility model：
A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure, it includes the rubble drainage set gradually from lower to upper
Layer, the platform back of the body, attachment strap basic unit, attachment strap, bituminous concrete, rubble drainage layer are arranged in the platform back of the body substrate of compacting；
Platform knapsack includes the multilayer platform back of the body packing layer set gradually from top to bottom, and steel wire is provided between every layer of bridge back filling layer
Net；Platform is carried on the back forming roadbed digging step between roadbed；
By attachment strap basic unit, rubble french drain is equipped with road structure layer；
The attachment strap is arranged on road-bridge transition section, and the bituminous concrete is flushed with upper road surface.
By such scheme, the elongated arrangement of rubble drainage layer direction across bridge, its thickness is 30cm.
By such scheme, rubble used in the rubble drainage layer is multi-angular body, and soft grain in aggregate is flat thin less than 5%
Long stone contents are less than 20%, and crush values are less than 35%, and liquid limit is not more than 28%, and plasticity index is less than 6.
By such scheme, every layer of bridge back filling layer uses rendzinas or rubble earthen backfill, and every layer of bridge back filling layer
Thickness be 20cm.
By such scheme, the aperture of steel wire is 0.5-2.5cm, according to backfill rendzinas or gravelly soil maximum particle diameter come
Selection.One end of steel wire is connected with abutment by expansion bolt and connector, and the other end is fixed on roadbed by vertical staple
On.
By such scheme, the size of the rubble french drain is generally 20 × 40cm, and generally use particle diameter opens level for 2-4cm's
With rubble；The lower part of rubble french drain is connected with the spilled water hole that retaining wall is reserved, a diameter of 5cm of spilled water hole, what rubble french drain was collected
Water is discharged by barricade spilled water hole.
By such scheme, the permeable geotextiles parcel of rubble french drain external application.
The beneficial effects of the utility model are：
Rubble drainage layer is laid with by carrying on the back substrate in platform, prevents platform back of the body substrate from bursting and become muddy when a thaw sets in after rainwater infiltration, at the same it is broken
Stone drainage layer has the performance of the second loosening, can buffer relative settlement, is alleviating the uneven of platform back of the body substrate generation to a certain degree
Deformation, and then solve Bridgehead-Jumping Disease caused by foundation settlement deformation；
By setting steel wire in bridge back filling layer, the plastic deformation of back filling behind abutment can be effectively reduced, makes back filling behind abutment material
Material forms entirety, reduces platform back of the body settlement, solves Bridgehead-Jumping Disease caused by backfilling material compaction deformation；
Attachment strap under vehicular load long term and road joint may occur in which transverse crack, and road table rainwater will be along under this
Ooze, the rainwater oozed along under the transverse crack of joint is collected by the rubble french drain set in road structure layer, can prevent roadbed table
Face can prevent road bed because flowing pressure causes to come to nothing, to bumping at bridge-head caused by Water Damage because flowing pressure produces frost boiling
Disease has preferable preventive and therapeutic effect, avoids the generation of Bridgehead-Jumping Disease.
Brief description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the platform back of the body of the utility model prevention bumping at bridge-head and the structure diagram of road surface drainage structure；
Wherein：1st, abutment；2nd, bituminous concrete；3rd, attachment strap；4th, attachment strap basic unit；5th, rubble french drain；6th, steel wire；7th, road
Base digs step；8th, rubble drainage layer；9th, road；10th, roadbed；11st, platform is carried on the back.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, is not used to limit the utility model.
Referring to Fig. 1, a kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure, it includes what is set gradually from lower to upper
Rubble drainage layer 8, the platform back of the body 11, attachment strap basic unit 4, attachment strap 3, bituminous concrete 2.Rubble drainage layer 8 is arranged on the platform back of the body base of compacting
On bottom, the elongated arrangement of direction across bridge, its thickness is 30cm；Rubble used in rubble drainage layer 8 should be multi-angular body, soft grain in aggregate
5% is should be less than, elongate stone contents should be less than 20%, and crush values should be less than 35%, and liquid limit is preferably not more than 28%, and plasticity index is suitable
Less than 6, while fill the materials such as aggregate chips, coarse sand.The platform back of the body 11 includes the multilayer platform back of the body packing layer 11-1 set gradually from top to bottom,
Every layer of bridge back filling layer 11-1 uses rendzinas or rubble earthen backfill, and the thickness of every layer of bridge back filling layer is 20cm；Every layer of platform
Be provided with the steel wire 6 that aperture is 0.5-2.5cm between back of the body packing layer 11-1, the aperture of steel wire 6 according to backfill rendzinas or
The maximum particle diameter of gravelly soil selects；One end of steel wire 6 is connected with abutment 1 by expansion bolt and connector, and the other end leads to
Vertical staple is crossed to be fixed on roadbed 10.The platform back of the body 11 is equipped with roadbed with 10 junction of roadbed and digs step 7.In attachment strap 3 and road 9
Joint, by attachment strap basic unit 4, rubble french drain 5 is equipped with the structure sheaf of road 9；The size of rubble french drain 5 is generally 20 ×
40cm, and the open gradation rubble that generally use particle diameter is 2-4cm；The spilled water hole phase that the lower part of rubble french drain 5 is reserved with retaining wall
Even, a diameter of 5cm of spilled water hole, the water that rubble french drain 5 is collected are discharged by barricade spilled water hole.The permeable geotechnique of 5 external application of rubble french drain
Cloth wraps up.Attachment strap 3 is arranged on road-bridge transition section.Bituminous concrete 2 is arranged on attachment strap 3, with 9 upper surface flush of road.
The utility model is quality controllable in the construction process, can work continuously, and can effectively be reduced in terms of three because of bridge
Bridgehead-Jumping Disease caused by platform platform back of the body differential settlement, has significant Social benefit and economic benefit after implementation.
Claims (9)
1. a kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure, it is characterised in that：Including what is set gradually from lower to upper
Rubble drainage layer, the platform back of the body, attachment strap basic unit, attachment strap, bituminous concrete, rubble drainage layer are arranged in the platform back of the body substrate of compacting；
Platform knapsack includes the multilayer platform back of the body packing layer set gradually from top to bottom, and steel wire is provided between every layer of bridge back filling layer；
Platform is carried on the back forming roadbed digging step between roadbed；
By attachment strap basic unit, rubble french drain is equipped with road structure layer；
The attachment strap is arranged on road-bridge transition section, and the bituminous concrete is flushed with upper road surface.
2. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1, it is characterised in that：The rubble
The thickness of drainage layer is 30cm.
3. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1 or 2, it is characterised in that：Rubble
The elongated arrangement of drainage layer direction across bridge.
4. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 3, it is characterised in that：The rubble
Rubble used in drainage layer is multi-angular body, and soft grain in aggregate is less than 5%, and elongate stone contents are less than 20%, and crush values are small
In 35%, liquid limit is not more than 28%, and plasticity index is less than 6.
5. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1, it is characterised in that：The described back of the body
The thickness of packing layer is 20cm.
6. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1, it is characterised in that：Steel wire
Aperture is 0.5-2.5cm, and its one end is connected with abutment by expansion bolt and connector, and the other end is fixed by vertical staple
On roadbed.
7. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1, it is characterised in that：The rubble
French drain uses open gradation rubble of the particle diameter for 2-4cm, and the lower part of rubble french drain is connected with the spilled water hole that retaining wall is reserved, spilled water hole
A diameter of 5cm.
8. the platform back of the body and road surface drainage structure of the prevention bumping at bridge-head according to claim 1 or 7, it is characterised in that：Rubble
French drain is wrapped up with permeable geotextiles.
9. the platform back of the body and road surface drainage structure of prevention bumping at bridge-head according to claim 1, it is characterised in that：The described back of the body
Using rendzinas or rubble earthen backfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149506.4U CN207295358U (en) | 2017-09-08 | 2017-09-08 | A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149506.4U CN207295358U (en) | 2017-09-08 | 2017-09-08 | A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure |
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| Publication Number | Publication Date |
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| CN207295358U true CN207295358U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721149506.4U Active CN207295358U (en) | 2017-09-08 | 2017-09-08 | A kind of platform back of the body for preventing bumping at bridge-head and road surface drainage structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999045A (en) * | 2018-09-29 | 2018-12-14 | 中冶南方工程技术有限公司 | A kind of subgrade strengthening structure and its construction method preventing and treating bumping at bridge-head |
| CN110804939A (en) * | 2019-11-15 | 2020-02-18 | 浙江中浩项目管理有限公司 | Reinforced structure of abutment jump car |
| CN110904823A (en) * | 2019-11-27 | 2020-03-24 | 昆山市交通工程质量监督站 | Bridge head bump treatment construction structure and construction method in high soft soil filling area |
| CN112681043A (en) * | 2020-12-18 | 2021-04-20 | 湖北省路桥集团有限公司 | Roadbed splicing and widening structure and construction method |
-
2017
- 2017-09-08 CN CN201721149506.4U patent/CN207295358U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999045A (en) * | 2018-09-29 | 2018-12-14 | 中冶南方工程技术有限公司 | A kind of subgrade strengthening structure and its construction method preventing and treating bumping at bridge-head |
| CN110804939A (en) * | 2019-11-15 | 2020-02-18 | 浙江中浩项目管理有限公司 | Reinforced structure of abutment jump car |
| CN110904823A (en) * | 2019-11-27 | 2020-03-24 | 昆山市交通工程质量监督站 | Bridge head bump treatment construction structure and construction method in high soft soil filling area |
| CN112681043A (en) * | 2020-12-18 | 2021-04-20 | 湖北省路桥集团有限公司 | Roadbed splicing and widening structure and construction method |
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