CN102852086A - High-performance semi-integral abutment structure and construction method thereof - Google Patents
High-performance semi-integral abutment structure and construction method thereof Download PDFInfo
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- CN102852086A CN102852086A CN2012103791157A CN201210379115A CN102852086A CN 102852086 A CN102852086 A CN 102852086A CN 2012103791157 A CN2012103791157 A CN 2012103791157A CN 201210379115 A CN201210379115 A CN 201210379115A CN 102852086 A CN102852086 A CN 102852086A
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Abstract
The invention relates to a high-performance semi-integral abutment structure and a construction method thereof. The high-performance semi-integral abutment structure comprises an abutment, a main girder of a bridge structure, a diaphragm, a sliding support, an approach slab and a bracket for supporting the approach slab, wherein the sliding support is arranged on a base of the upper side of the abutment and supported on lower side faces of the ends of the main girder; the diaphragm is integrally connected on the ends of the main girder and extends to the back of the abutment; the extension part of the diaphragm strides over the sliding support and expands downwards to a position on a boundary line of the abutment and the base; a gap enough for expansion deformation is reserved between the diaphragm and the base; the bracket is arranged on the end of the extension part of the diaphragm; one end of the approach slab is supported on the bracket; and the approach slab strides over a backfill area likely to settle to play a role of road-bridge transition. The high-performance semi-integral abutment structure and the construction method thereof, provided by the invention, can be used for seamless building of new bridges and are very suitable for seamless transformation of old bridges.
Description
Technical field
The present invention relates to a kind of high-performance semi-monolithic formula bridge abutment structure and job practices thereof, it both can be used for the construction of new bridge seamless process, was well suited for again the seamless process transformation of old bridge.
Background technology
Exist a large amount of old bridge (some belongs to non-seismic design, and also some shock resistance is not enough) to need to transform all over the world and reinforce, wherein, seamless process is the higher possibility of a comprehensive value.For the seamless process transformation of existing bridge, owing to can only carry out on the basis of original structure (much being rigid foundation or concrete pile foundation), almost can't change original base form, but also want the reduce improvement expenses.For adapting to the seamless process transformation of rigid foundation or concrete pile abutment bridge, a kind of novel high-performance semi-monolithic formula bridge abutment structure uses and gives birth to.This abutment provides a kind of safe, durable effective solution for the seamless process transformation of existing bridge.
Summary of the invention
The object of the invention is to a kind of high-performance semi-monolithic formula bridge abutment structure and job practices thereof, use this novel high-performance semi-monolithic formula bridge abutment structure and can cancel former bridge expanssion joint, thereby avoided and related all normal usage functions in shrinkage joint, safety, endurance issues.Consider from economic, safe, attractive in appearance, durable equal angles, under the basic demand of satisfied temperature dilatation, this novel high-performance semi-monolithic formula abutment the new bridge construction particularly old bridge transformation have superior practice significance.
Technical program of the present invention lies in: a kind of high-performance semi-monolithic formula bridge abutment structure, described high-performance semi-monolithic formula bridge abutment structure comprises girder, diaphragm, sliding support, the attachment strap of abutment, bridge construction and is used for the bracket of supporting attachment strap, described sliding support is arranged on the pedestal of abutment upside, and described sliding support is supported on the downside of end of main beam; Described diaphragm integrally is connected on the end of main beam, and extend to the abutment back side, the extension of described diaphragm strides across sliding support and extends to abutment downwards and pedestal line of demarcation upper-lower position, is reserved with the slit of enough dilatations between described diaphragm and the pedestal; Described bracket is arranged on the end of extension of diaphragm, and described attachment strap one end bearing is on bracket, and described attachment strap strides across the backfill zone that may produce sedimentation, plays the transition effect.
Above-mentioned high-performance semi-monolithic formula bridge abutment structure also comprises a drainage system, described drainage system is arranged at the abutment rear side and is positioned at the following position of base bottom horizon, may enter by the dilatation seam of reserving the rainwater of sliding support position in order in time discharge.
Above-mentioned drainage system comprises gutter and is filled in the rubble of gutter perimembranous.
Connecting reinforcement is realized non-rigid connection between above-mentioned attachment strap and the bracket, to guarantee both cooperative transformations under temperature action.
The job practices of above-mentioned high-performance semi-monolithic formula bridge abutment structure, carry out according to the following steps:
(1) if build new bridge, then build first abutment and prefabricated girder, when doing abutment, need not do the abutment parados, need to be at the beam-ends reserved steel bar, in order to realize being connected with the reinforcing bar of end of main beam diaphragm when prefabricated girder; If old bridge transformation then keeps former girder and abutment constant, remove banketing and parados of bridge end, the end dabbing of girder, bar planting is in order to realize being connected with the reinforcing bar of end of main beam diaphragm;
(2), after arranging sliding support and having set up girder, the reinforcing bar of colligation diaphragm, and the steel bar welding that itself and girder are reserved is connected into integral body, also bracket need be set simultaneously, and reserve the connecting reinforcement that is connected with attachment strap in the bracket place;
(3), build diaphragm, and after finishing the building of diaphragm, carry out the construction of abutment rear side drainage system, the construction of described drainage system comprises that the layout of gutter and rubble fill;
(4), the backfill zone is carried out backfill, rolled, cheats reality; Behind settlement stability, carry out the attachment strap construction.The connecting reinforcement that itself and diaphragm bracket place need to be reserved during the reinforcing bar of colligation attachment strap is welded into a whole.
In above-mentioned steps (2), described diaphragm must integrally be connected on the bridge construction girder, and extending to the abutment back side, extension strides across sliding support and extends to abutment downwards and position, pedestal line of demarcation, but and must be reserved with the slit of enough dilatations between the pedestal.
In above-mentioned steps (3), described drainage system must be arranged at the base bottom horizon with upper/lower positions, in order in time discharging the water that enters support position by the dilatation seam place that reserves is arranged.
Beneficial effect of the present invention: (1) structure has widely applicability, not only can be used for the construction of new bridge but also can be used for the transformation of old bridge; Because Bridges in Our Country is main mainly with rigid foundation, therefore be specially adapted to China.(2) structure self has good characteristic, has removed the expansion gap device of bridge, has improved the globality of bridge, realized really seamless to full-bridge, thereby so that bridge floor is continuous, smooth, without jump car, safeguard few.(3) this abutment has the characteristics such as safety, durable high comprehensive performance, can bring good economical, societal benefits.(4) (some belongs to non-seismic design to have a large amount of old bridges all over the world, also some shock resistance is not enough) need to transform and reinforce, the present invention provides a kind of possibility of high comprehensive performance for it, all endurance issues relevant with the shrinkage joint have namely been eliminated, improved again the globality of bridge, and made the bridge construction characteristic become more reasonable.(5) do not had after seamless because the shrinkage joint corrosion of leaking reduces the problem of durability, simultaneously driving is steady little to the impact of bridge.
Description of drawings
Fig. 1 is the high-performance semi-monolithic formula bridge abutment structure schematic diagram among the embodiment.
Among the figure: 12 gutters of Bridge 1 platform 2 girders 3 diaphragms 4 sliding supports 5 attachment straps 6 drainage systems 7 brackets 8 connecting reinforcements 9 pedestals 10 slits 11 backfills zone.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing and an embodiment, separate application of the present invention with the assistant, but protection scope of the present invention is not limited to this instantiation.
As shown in Figure 1, a kind of high-performance semi-monolithic formula bridge abutment structure, described high-performance semi-monolithic formula bridge abutment structure comprises girder 2, diaphragm 3, sliding support 4, the attachment strap 5 of abutment 1, bridge construction and is used for the bracket 7 of supporting attachment strap 5, described sliding support 4 is arranged on the pedestal 9 of abutment 1 upside, and described sliding support 4 is supported on the downside of girder 2 ends; Described diaphragm 3 integrally is connected on girder 2 ends, and extend to abutment 1 back side, the extension of described diaphragm 3 strides across sliding support and extends to abutment downwards and pedestal line of demarcation upper-lower position, is reserved with the slit 10 of enough dilatations between described diaphragm and the pedestal; Described bracket 7 is arranged on the end of extension of diaphragm 3, and described attachment strap 5 one end bearings are on bracket 7, and described attachment strap 5 strides across the backfill zone 11 that may produce sedimentation, play the transition effect.
Above-mentioned high-performance semi-monolithic formula bridge abutment structure also comprises a drainage system 6, described drainage system 6 is arranged at the abutment rear side and is positioned at the following position of pedestal 9 bottom water horizontal lines, in order in time discharging the rainwater that enters sliding support 4 positions by the dilatation seam of reserving.
Above-mentioned drainage system comprises gutter 12 and is filled in the rubble of gutter perimembranous.
Connecting reinforcement 8 is realized non-rigid connection between above-mentioned attachment strap and the bracket, to guarantee both cooperative transformations under temperature action.It can freely rotate with the bracket junction under load action specifically to be exactly on the one hand attachment strap, on the other hand under temperature action attachment strap again with the collaborative dilatation of diaphragm, at this moment connecting reinforcement 8 bearing tensions.
The job practices of above-mentioned high-performance semi-monolithic formula bridge abutment structure, carry out according to the following steps:
When (1a), building abutment 1 and prefabricated girder 2 with the construction of conventional bridge.But it is pointed out that when doing abutment 1 and need not do the abutment parados, and need at the beam-ends reserved steel bar, be connected for use in the reinforcing bar with girder 2 end diaphragms 3 during prefabricated girder 2.
If (1b) old bridge transformation because abutment 1 has been built up, therefore keep former girder 2 and abutment 1 constant, is removed banketing and parados of bridge end, in the end of girder 2 dabbing, bar planting is connected for use in the reinforcing bar with girder 2 end diaphragms 3.
(2), after arranging sliding support 4, having set up girder 2, the reinforcing bar of colligation diaphragm 3, and the steel bar welding that itself and girder 2 reserved is connected into integral body, also bracket 7 need be set simultaneously, and reserve the connecting reinforcement 8 that is connected with attachment strap 5 in bracket 7 places.It is to be noted: diaphragm 3 must integrally be connected on the bridge construction girder 2, and extend to abutment 1 back side, extension strides across sliding support 4 and extends to abutment 1 and position, pedestal 9 line of demarcation downwards, but and must be reserved with the slit 10 of enough dilatations between the pedestal 9.
(3), finish the building of diaphragm 3 after, need carry out the construction of drainage system 6 behind the platform, comprise that the layout of gutter 12 and rubble fill.Drainage system 6 must be arranged at the following position of pedestal 9 bottom water horizontal lines, is comprised of how empty gutter 12 and rubble on every side thereof, and its purpose is that timely discharge may enter by 10 places, dilatation slit that reserve the water of support position.
(4), carry out drainage system 6 after, can carry out backfill to backfill zone 11, roll, cheat reality.Behind settlement stability, can carry out attachment strap 5 constructions.The reinforcing bar that itself and diaphragm 3 brackets 7 places need to be reserved during the reinforcing bar of colligation attachment strap 5 is welded into a whole.It is to be noted: consist of overall coordination distortion by special connecting reinforcement 8 is set to guarantee both at diaphragm 3 and attachment strap 5 connecting places.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. high-performance semi-monolithic formula bridge abutment structure, it is characterized in that: described high-performance semi-monolithic formula bridge abutment structure comprises girder, diaphragm, sliding support, the attachment strap of abutment, bridge construction and is used for the bracket of supporting attachment strap, described sliding support is arranged on the pedestal of abutment upside, and described sliding support is supported on the downside of end of main beam; Described diaphragm integrally is connected on the end of main beam, and extend to the abutment back side, the extension of described diaphragm strides across sliding support and extends to abutment downwards and pedestal line of demarcation upper-lower position, is reserved with the slit of enough dilatations between described diaphragm and the pedestal; Described bracket is arranged on the end of extension of diaphragm, and described attachment strap one end bearing is on bracket, and described attachment strap strides across the backfill zone, plays the transition effect.
2. high-performance semi-monolithic formula bridge abutment structure according to claim 1, it is characterized in that: described high-performance semi-monolithic formula bridge abutment structure also comprises a drainage system, described drainage system is arranged at the abutment rear side and is positioned at the following position of base bottom horizon, in order in time discharging the rainwater that enters the sliding support position by the dilatation seam of reserving.
3. high-performance semi-monolithic formula bridge abutment structure according to claim 2 is characterized in that: described drainage system comprises gutter and is filled in the rubble of gutter perimembranous.
4. high-performance semi-monolithic formula bridge abutment structure according to claim 1, it is characterized in that: connecting reinforcement is realized non-rigid connection between described attachment strap and the bracket, to guarantee both cooperative transformations under temperature action.
5. the job practices of a high-performance semi-monolithic formula bridge abutment structure is characterized in that, carries out according to the following steps:
(1) if build new bridge, then build first abutment and prefabricated girder, when doing abutment, need not do the abutment parados, need to be at the beam-ends reserved steel bar, in order to realize being connected with the reinforcing bar of end of main beam diaphragm when prefabricated girder; If old bridge transformation then keeps former girder and abutment constant, remove banketing and parados of bridge end, the end dabbing of girder, bar planting is in order to realize being connected with the reinforcing bar of end of main beam diaphragm;
(2), after arranging sliding support and having set up girder, the reinforcing bar of colligation diaphragm, and the steel bar welding that itself and girder are reserved is connected into integral body, also bracket need be set simultaneously, and reserve the connecting reinforcement that is connected with attachment strap in the bracket place;
(3), build diaphragm, and after finishing the building of diaphragm, carry out the construction of abutment rear side drainage system, the construction of described drainage system comprises that the layout of gutter and rubble fill;
(4), the backfill zone is carried out backfill, rolled, cheats reality; Behind settlement stability, carry out attachment strap construction, its connecting reinforcement with the reservation of diaphragm bracket place need to be welded into a whole during the reinforcing bar of colligation attachment strap.
6. the job practices of high-performance semi-monolithic formula bridge abutment structure according to claim 5, it is characterized in that: in above-mentioned steps (2), described diaphragm must integrally be connected on the bridge construction girder, and extend to the abutment back side, extension strides across sliding support and extends to abutment downwards and position, pedestal line of demarcation, but and must be reserved with the slit of enough dilatations between the pedestal.
7. the job practices of high-performance semi-monolithic formula bridge abutment structure according to claim 5, it is characterized in that: in above-mentioned steps (3), described drainage system must be arranged at the base bottom horizon with upper/lower positions, in order in time discharging the rainwater that enters support position by the dilatation seam place that reserves.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294923A (en) * | 2014-09-16 | 2015-01-21 | 中国建筑第八工程局有限公司 | Deformation joint structure and construction method thereof |
| CN104313996A (en) * | 2014-09-30 | 2015-01-28 | 上海市政工程设计研究总院（集团）有限公司 | Bridge abutment knocking-off structure |
| CN104594190A (en) * | 2015-02-16 | 2015-05-06 | 西安公路研究院 | Bridge seamless telescopic device and construction method of device |
| CN104878687A (en) * | 2015-06-16 | 2015-09-02 | 厦门理工学院 | Semi-integral seamless slope bridge head structure |
| CN106638291A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Structure of arc-shaped lap-joint slab capable of reducing bridge circulation control joint swelling and shrinking |
| CN106638277A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Expansible bridge abutment approach slab structure |
| CN106758782A (en) * | 2017-02-14 | 2017-05-31 | 上海市城市建设设计研究总院（集团）有限公司 | The construction of bridge hazard to bridge's pier end horizontal active force can be reduced |
| CN109594468A (en) * | 2019-01-17 | 2019-04-09 | 浙江工业大学 | The embed-type UHPC lap slab of bridge construction of multistage fixed with oblique anchor pole |
| CN110761163A (en) * | 2019-11-29 | 2020-02-07 | 福州大学 | Rapid construction structure of integral bridge and construction method thereof |
| CN110761163B (en) * | 2019-11-29 | 2024-05-31 | 福州大学 | Rapid construction structure of integral bridge and construction method thereof |
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| CN101440602A (en) * | 2008-12-19 | 2009-05-27 | 湖南大学 | Structure of continuously reinforced link road pavement for seamless bridge |
| CN101532276A (en) * | 2009-02-09 | 2009-09-16 | 于心然 | Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam |
| CN102061667A (en) * | 2011-01-27 | 2011-05-18 | 河南省新开元路桥工程咨询有限公司 | Method for arranging semi-integral hidden expansion joint for abutment and bridge girder |
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| KR20050030057A (en) * | 2003-09-24 | 2005-03-29 | 주식회사 용마엔지니어링 | Method for constructing semi-integral abutment bridge |
| CN101440602A (en) * | 2008-12-19 | 2009-05-27 | 湖南大学 | Structure of continuously reinforced link road pavement for seamless bridge |
| CN101532276A (en) * | 2009-02-09 | 2009-09-16 | 于心然 | Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294923A (en) * | 2014-09-16 | 2015-01-21 | 中国建筑第八工程局有限公司 | Deformation joint structure and construction method thereof |
| CN104313996A (en) * | 2014-09-30 | 2015-01-28 | 上海市政工程设计研究总院（集团）有限公司 | Bridge abutment knocking-off structure |
| CN104594190A (en) * | 2015-02-16 | 2015-05-06 | 西安公路研究院 | Bridge seamless telescopic device and construction method of device |
| CN104878687A (en) * | 2015-06-16 | 2015-09-02 | 厦门理工学院 | Semi-integral seamless slope bridge head structure |
| CN106638291A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Structure of arc-shaped lap-joint slab capable of reducing bridge circulation control joint swelling and shrinking |
| CN106638277A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Expansible bridge abutment approach slab structure |
| CN106758782A (en) * | 2017-02-14 | 2017-05-31 | 上海市城市建设设计研究总院（集团）有限公司 | The construction of bridge hazard to bridge's pier end horizontal active force can be reduced |
| CN106638291B (en) * | 2017-02-14 | 2021-08-31 | 上海市城市建设设计研究总院（集团）有限公司 | Arc-shaped lapping plate structure capable of reducing expansion and contraction amount of bridge circulation control joint |
| CN109594468A (en) * | 2019-01-17 | 2019-04-09 | 浙江工业大学 | The embed-type UHPC lap slab of bridge construction of multistage fixed with oblique anchor pole |
| CN110761163A (en) * | 2019-11-29 | 2020-02-07 | 福州大学 | Rapid construction structure of integral bridge and construction method thereof |
| CN110761163B (en) * | 2019-11-29 | 2024-05-31 | 福州大学 | Rapid construction structure of integral bridge and construction method thereof |
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Application publication date: 20130102 |