CN201850505U - Rigid-flexible transition structure capable of preventing bumping at bridge-head - Google Patents
Rigid-flexible transition structure capable of preventing bumping at bridge-head Download PDFInfo
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- CN201850505U CN201850505U CN 201020613234 CN201020613234U CN201850505U CN 201850505 U CN201850505 U CN 201850505U CN 201020613234 CN201020613234 CN 201020613234 CN 201020613234 U CN201020613234 U CN 201020613234U CN 201850505 U CN201850505 U CN 201850505U
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Abstract
The utility model relates to a rigid-flexible transition structure capable of preventing bumping at a bridge-head. In the traditional rigid-flexible transition structure capable of preventing bumping at the bridge-head, a road-bridge transition section and an embankment at a composite foundation have the same rigidity, and the differential settlement easily occurs at an interface of the composite foundation and a general foundation. The technical scheme provided by the utility model is as follows: the rigid-flexible transition structure capable of preventing bumping at the bridge-head comprises a pavement, an embankment, a composite foundation, a pile cap, an abutment pile foundation, a general embankment and an abutment, wherein the pile cap is provided with an extension section in the abutment back direction, and the center of gravity of the pile cap is positioned at one side of an abutment body; a reinforced earth embankment is arranged between the abutment back and the general embankment, one end of each reinforcing steel bar in the reinforced earth embankment extends into the embankment, and the other end of each reinforcing steel bar is pre-embedded at the back of the abutment and the end part of the pile cap; and the end part of each reinforcing steel bar is gradually increased from top to bottom in the longitudinal section, and composite foundation piles are sequentially shortened in the direction away from the back of the abutment. In the rigid-flexible transition structure, the whole rigidity is gradually decreased, and the smooth transition of the differential settlement of roads and bridges can be realized.
Description
Technical field
The utility model relates to bumping at bridge-head processing technology field in the bridge engineering construction, is specifically related to a kind of rigid-flexibility transition structure that prevents bumping at bridge-head.
Background technology
Bumping at bridge-head and road surface early damage and settlement of subgrade are called as the big common quality defect of three in the current highway bridge construction, and visible problem of bumping at bridge-head is a great problem in the highway engineering always.Bumping at bridge-head is because the differential settlement that bankets behind abutment and the platform surpasses bridge on the vehicle that causes after the threshold value or beating and impact phenomenon during bridge down.Bumping at bridge-head not only can produce additional impact load to abutment and road structure, and can make the driver and conductor produce tangible discomfort.Particularly in soft clay area, the bumping at bridge-head phenomenon is more serious, and is excessive because of relative settlement sometimes, even causes driving accident.In order to eliminate the bumping at bridge-head phenomenon that the relative settlement of banketing behind abutment and the platform causes, maintenance department all will spend that huge fund is keeped in repair and maintenance every year, causes enormous economic loss, and produces bad social influence.
At present, prevent bumping at bridge-head from filler, ground, abutment and four aspects of supplementary structure usually on the bridge engineering, specifically select light filler for use, carry out ground and handle, adopt the reinforced earth abutment and measure such as transition slab at bridge head is set.Adopt the reinforced earth abutment can fundamentally avoid the bumping at bridge-head phenomenon in theory, but this abutment is only applicable to the bridge crossing of the high 5 ~ 6m of platform or the medium and small footpath bridge of striding that the platform position is not washed away by river; Transition slab at bridge head is set is the method that generally adopts in the bridge construction now, empty and cause disconnected plate or make the differential settlement step transfer between roadbed and the attachment strap and cause so-called " secondary jumping car " phenomenon from abutment but often occur the attachment strap bottom in actual use; Carrying out the ground processing is the fundamental measure that reduces and eliminate relative settlement, especially on soft foundation, construct a bridge, must carry out ground to the road and bridge adapter section handles, the method that ground is handled is more, technology is comparative maturity also, but single foundation treatment mode still can not effect a radical cure the generation of bumping at bridge-head phenomenon, and the consolidation process of deep soft soil foundation is still technological difficulties in the present soft clay area bridge construction.
The common rigid-flexibility transition structure that prevents bumping at bridge-head comprises road surface, embankment, composite foundation, abutment pile foundation, cushion cap, general embankment and abutment at present, and the center of gravity of abutment is positioned at the middle part of cushion cap on cross section, and the degree of depth of compound foundation pile root is the same.Because road-bridge transition section is identical with composite foundation place embankment rigidity, relative settlement appears in composite foundation and general ground interface easily, so this structure still can't be effected a radical cure the bumping at bridge-head phenomenon.
Summary of the invention
The purpose of this utility model provides a kind of rigid-flexibility transition structure that prevents bumping at bridge-head, can not effect a radical cure the deficiency of bumping at bridge-head phenomenon to overcome prior art.
Technical solution of the present utility model is: a kind of rigid-flexibility transition structure that prevents bumping at bridge-head, comprise road surface, embankment, composite foundation, cushion cap, abutment pile foundation, general embankment and abutment, its special character is: described cushion cap is provided with the extension in the platform back of the body direction of abutment, and the cushion cap center of gravity is positioned at abutment body one side of abutment; Be provided with reinforced soil embankment between the platform back of the body of described abutment and the general embankment, the reinforcing bar in the reinforced soil embankment, an end stretch into embankment, and an end is embedded in the platform back of the body place of abutment and the end of cushion cap in advance, and the end of reinforcing bar increases from top to bottom gradually on longitudinal section; Described compound foundation pile shortens on away from abutment platform back of the body direction according to this.
Be welded with horizontal dowel and vertical dowel in vertical route direction and embankment depth direction between the described reinforcing bar.Netted or solid netted to form the plane, more effective control sedimentation.
Compared with prior art, the utility model has the advantages that:
1) unites the two kinds of following settlement Control means that adopt, one is that reinforced soil embankment forms a sedimentation integral body by embedded bar and abutment, and because under the cushion cap extension and compound foundation pile acting in conjunction of abutment, embankment and abutment can be realized synchronous sedimentation substantially behind the platform; Described reinforced soil embankment and general embankment, and the rigidity grading structure that becomes of composite foundation and general ground mutual group can make platform after interior embankment and the foundation settlement of a segment distance realize a smooth transition.Thus, in whole road-bridge transition section scope, guarantee that all the time relative settlement is controlled under the certain standard, thereby effectively avoid and eliminate the generation of bumping at bridge-head phenomenon;
2) relative settlement is difficult to be avoided technically, key is with the relative settlement discretization and is controlled within the threshold value, the utility model extends in the segment distance of road from bridge starting point (or terminal point), structural entity rigidity reduces gradually, thereby realizes the smooth transition of road and bridge relative settlement.
3) applied widely, not only can be used for medium and small bumping at bridge-head control of striding the footpath bridge on the expressway, and prevent and treat applicable to the bumping at bridge-head of bridge and grand bridge.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Description of reference numerals is as follows:
1 general ground; 2 general embankments; 3-road surface; 4-abutment; 5-composite foundation; 6-compound foundation pile; 7-reinforced soil embankment; 8-reinforcing bar; 9-cushion cap; 10-abutment pile foundation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Referring to Fig. 1, a kind of rigid-flexibility transition structure that prevents bumping at bridge-head comprises road surface 3, composite foundation 5, cushion cap 9, general embankment 2 and abutment 4.Said cushion cap 9 is provided with the extension in the platform back of the body direction of abutment 4, and cushion cap 9 centers of gravity are positioned at abutment body one side of abutment 4; Be provided with reinforced soil embankment 7 between the platform back of the body of described abutment 4 and the general embankment 2, reinforcing bar 8 one ends in the reinforced soil embankment 7 stretch into general embankment 2, one end is embedded in the platform back of the body place of abutment 4 and the end of cushion cap 9 in advance, and the end of reinforcing bar 8 increases from top to bottom gradually on longitudinal section; Described composite foundation pile body 6 shortens on away from 4 back ofs the body of abutment direction according to this.
In the utility model, pile foundation is adopted on abutment 4 bases; The platform groundwork is handled and is from the close-by examples to those far off adopted composite foundation 5 and general ground 1 respectively, and described composite foundation pile body 6 preferred CFG stakes also can be adopted agitation pile, rotary churning pile, broken stone pile or sand pile etc.; Embankment fills and from the close-by examples to those far off adopts reinforced soil embankment 7 and general embankment 2 respectively behind the platform, described reinforced soil embankment 7 is made of embedded bar 8 and filler, can also be welded with horizontal dowel and vertical dowel in vertical route direction and embankment depth direction between the reinforcing bar 8, netted or solid netted to form the plane, more effective control sedimentation, preferred gravel class of filler or sandy soil, also can adopt gravelly soil and in low liquid limit cohesive soil, control filler moisture content is ± 2%, and packing material size must satisfy code requirement.
During construction, carry out ground earlier and handle, construction composite foundation 5, compound foundation pile 6 from the close-by examples to those far off shortens according to this apart from abutment 4, the abutment pile foundation of constructing again, embedded bar 8 when building cushion cap 9 and abutment body afterwards, and the length of reinforcing bar 8 increases from top to bottom successively, the end forms the inclined-plane, then carry out Embankment Compaction Quality behind the platform, form reinforced soil embankment 7, set up girder simultaneously, the shrinkage joint is installed at last successively, whole road surface 3 moulding and finish deck paving.
The above only is the schematic specific embodiment of the utility model, can not limit the scope that the utility model is implemented with it.So the amplification of its equivalent assemblies, dwindle, replace, or, all still belong to the covering scope of the utility model claims according to equivalent variations and modification that the utility model scope of patent protection is done.
Claims (2)
1. rigid-flexibility transition structure that prevents bumping at bridge-head, comprise road surface (3), embankment (2), composite foundation (5), cushion cap (9), abutment pile foundation (10), general embankment (2) and abutment (4), it is characterized in that: described cushion cap (9) is provided with the extension in the platform back of the body direction of abutment (4), and cushion cap (9) center of gravity is positioned at abutment body one side of abutment (4); Be provided with reinforced soil embankment (7) between the platform back of the body of described abutment (4) and the general embankment (2), reinforcing bar (8) in the reinforced soil embankment (7), an end stretch into embankment (2), one end is embedded in the platform back of the body place of abutment (4) and the end of cushion cap (9) in advance, and the end of reinforcing bar (8) increases from top to bottom gradually on longitudinal section; Described compound foundation pile (6) shortens on away from abutment (4) platform back of the body direction according to this.
2. the rigid-flexibility transition structure that prevents bumping at bridge-head according to claim 1, it is characterized in that: be welded with horizontal dowel and vertical dowel in vertical route direction and embankment depth direction between the described reinforcing bar (8), netted or solid netted to form the plane, more effective control sedimentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020613234 CN201850505U (en) | 2010-11-18 | 2010-11-18 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020613234 CN201850505U (en) | 2010-11-18 | 2010-11-18 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
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| CN201850505U true CN201850505U (en) | 2011-06-01 |
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| CN 201020613234 Expired - Fee Related CN201850505U (en) | 2010-11-18 | 2010-11-18 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296508A (en) * | 2011-06-20 | 2011-12-28 | 江苏省交通科学研究院股份有限公司 | Variable-stiffness composite foundation for highway |
| CN102979031A (en) * | 2011-09-06 | 2013-03-20 | 中冶交通工程技术有限公司 | Method and structure used for handling highway bridgehead bumping problem |
| CN102979020A (en) * | 2011-09-06 | 2013-03-20 | 中冶交通工程技术有限公司 | Method and structure used for handling highway bridgehead bumping problem |
| CN103114521A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
| CN104631271A (en) * | 2015-01-26 | 2015-05-20 | 上海市政工程设计研究总院（集团）有限公司 | Bridge grounding section structure for removing bump at bridge head |
| CN105113350A (en) * | 2015-08-27 | 2015-12-02 | 苏州同尚工程设计咨询有限公司 | Pier abutment roadbed structure and construction method |
| CN105332339A (en) * | 2015-11-25 | 2016-02-17 | 华中科技大学 | Method for calculating internal force of rib materials of flexible reinforced earth abutment |
| CN105887795A (en) * | 2016-06-07 | 2016-08-24 | 浙江大学 | Abutment back soft soil foundation gradual-change pile length counterforce loading prepressing method |
| CN106192649A (en) * | 2016-07-21 | 2016-12-07 | 桂林理工大学 | A kind of construction method processing problem of bumping at bridge-head |
| CN106192650A (en) * | 2016-07-27 | 2016-12-07 | 宁波市交通规划设计研究院有限公司 | The operation highway bridgehead vehicle jump coordinating to control based on malformation disposes structure and method |
| CN106284053A (en) * | 2016-08-06 | 2017-01-04 | 桂林理工大学 | A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head |
| CN107142804A (en) * | 2017-05-11 | 2017-09-08 | 张春英 | A kind of roadbed filler on bridgehead of high-grade highway and its production method |
| CN109371817A (en) * | 2018-12-12 | 2019-02-22 | 张立辉 | The preprocess method of bumping at bridge-head in highway construction |
| CN110735390A (en) * | 2019-11-15 | 2020-01-31 | 上海公路桥梁（集团）有限公司 | Support assembly for preventing and treating bump at bridge head and construction method thereof |
| CN112211052A (en) * | 2020-09-29 | 2021-01-12 | 中南大学 | Long and short pile-plate structure for controlling uneven settlement of transition section of highway and construction method thereof |
| CN112921791A (en) * | 2021-01-25 | 2021-06-08 | 南昌航空大学 | Light abutment and construction method thereof |
| CN113326635A (en) * | 2021-06-23 | 2021-08-31 | 中建七局交通建设有限公司 | Soft foundation treatment depth prediction method for solving uneven settlement of bridge head |
| CN114032778A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Anti-settling and anti-sliding bridge conical slope construction method |
| CN115162142A (en) * | 2022-07-28 | 2022-10-11 | 石家庄铁道大学 | Abutment-roadbed integrated structure and construction method thereof |
| CN115404839A (en) * | 2022-08-17 | 2022-11-29 | 山东电力工程咨询院有限公司 | Flexible rigidity-variable circulating water pipe foundation structure and construction method |
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2010
- 2010-11-18 CN CN 201020613234 patent/CN201850505U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296508A (en) * | 2011-06-20 | 2011-12-28 | 江苏省交通科学研究院股份有限公司 | Variable-stiffness composite foundation for highway |
| CN102979031B (en) * | 2011-09-06 | 2015-09-09 | 中冶交通工程技术有限公司 | A kind of processing method of vehicle jumping at bridge head of highway and process structure |
| CN102979031A (en) * | 2011-09-06 | 2013-03-20 | 中冶交通工程技术有限公司 | Method and structure used for handling highway bridgehead bumping problem |
| CN102979020A (en) * | 2011-09-06 | 2013-03-20 | 中冶交通工程技术有限公司 | Method and structure used for handling highway bridgehead bumping problem |
| CN103114521A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103114521B (en) * | 2013-01-21 | 2015-02-11 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
| CN104631271A (en) * | 2015-01-26 | 2015-05-20 | 上海市政工程设计研究总院（集团）有限公司 | Bridge grounding section structure for removing bump at bridge head |
| CN104631271B (en) * | 2015-01-26 | 2016-08-24 | 上海市政工程设计研究总院（集团）有限公司 | A kind of bridge ground section structure eliminating bumping at bridge-head |
| CN105113350A (en) * | 2015-08-27 | 2015-12-02 | 苏州同尚工程设计咨询有限公司 | Pier abutment roadbed structure and construction method |
| CN105332339A (en) * | 2015-11-25 | 2016-02-17 | 华中科技大学 | Method for calculating internal force of rib materials of flexible reinforced earth abutment |
| CN105887795A (en) * | 2016-06-07 | 2016-08-24 | 浙江大学 | Abutment back soft soil foundation gradual-change pile length counterforce loading prepressing method |
| CN105887795B (en) * | 2016-06-07 | 2018-05-01 | 浙江大学 | The long counter-force loading preloading method of Abutment Back soft soil foundation gradual change stake |
| CN106192649A (en) * | 2016-07-21 | 2016-12-07 | 桂林理工大学 | A kind of construction method processing problem of bumping at bridge-head |
| CN106192650A (en) * | 2016-07-27 | 2016-12-07 | 宁波市交通规划设计研究院有限公司 | The operation highway bridgehead vehicle jump coordinating to control based on malformation disposes structure and method |
| CN106192650B (en) * | 2016-07-27 | 2018-05-15 | 宁波市交通规划设计研究院有限公司 | Coordinate the operation highway bridgehead vehicle jump disposal structure and method of control based on malformation |
| CN106284053A (en) * | 2016-08-06 | 2017-01-04 | 桂林理工大学 | A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head |
| CN107142804A (en) * | 2017-05-11 | 2017-09-08 | 张春英 | A kind of roadbed filler on bridgehead of high-grade highway and its production method |
| CN109371817B (en) * | 2018-12-12 | 2020-10-27 | 广州趣科信息科技有限公司 | Pretreatment method for end-of-bridge vehicle jumping in highway construction |
| CN109371817A (en) * | 2018-12-12 | 2019-02-22 | 张立辉 | The preprocess method of bumping at bridge-head in highway construction |
| CN110735390A (en) * | 2019-11-15 | 2020-01-31 | 上海公路桥梁（集团）有限公司 | Support assembly for preventing and treating bump at bridge head and construction method thereof |
| CN112211052A (en) * | 2020-09-29 | 2021-01-12 | 中南大学 | Long and short pile-plate structure for controlling uneven settlement of transition section of highway and construction method thereof |
| CN112921791A (en) * | 2021-01-25 | 2021-06-08 | 南昌航空大学 | Light abutment and construction method thereof |
| CN113326635A (en) * | 2021-06-23 | 2021-08-31 | 中建七局交通建设有限公司 | Soft foundation treatment depth prediction method for solving uneven settlement of bridge head |
| CN114032778A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Anti-settling and anti-sliding bridge conical slope construction method |
| CN115162142A (en) * | 2022-07-28 | 2022-10-11 | 石家庄铁道大学 | Abutment-roadbed integrated structure and construction method thereof |
| CN115404839A (en) * | 2022-08-17 | 2022-11-29 | 山东电力工程咨询院有限公司 | Flexible rigidity-variable circulating water pipe foundation structure and construction method |
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Owner name: XI'AN CCCC CIVIL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CCCC FIRST HIGHWAY CONSULTANTS CO., LTD. Effective date: 20140411 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710075 XI'AN, SHAANXI PROVINCE TO: 710065 XI'AN, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140411 Address after: 710065 No. 205, No. four, science and Technology Development Zone, Xi'an hi tech Development Zone, Shaanxi Patentee after: CCCC Civil Engineering Science & Technology Co., Ltd. Address before: 710075 Xi'an hi tech Development Zone, Shaanxi science and technology No. two road, No. 63 Patentee before: CCCC First Highway Consultants Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |