CN203284726U - Abutment joint part of integral type steel and concrete composite bridge - Google Patents
Abutment joint part of integral type steel and concrete composite bridge Download PDFInfo
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- CN203284726U CN203284726U CN201220721164XU CN201220721164U CN203284726U CN 203284726 U CN203284726 U CN 203284726U CN 201220721164X U CN201220721164X U CN 201220721164XU CN 201220721164 U CN201220721164 U CN 201220721164U CN 203284726 U CN203284726 U CN 203284726U
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Abstract
The utility model relates to an abutment joint part of an integral type steel and concrete composite bridge, which belongs to the technical field of bridge engineering. The structure of a concrete abutment is similar to that of a common bridge with a bearer. The tail end of the externally-arranged steel beam of the joint part is provided with an L-shaped I-steel structure, which is directly and vertically inserted into a concrete abutment. A web inserted in the concrete is provided with multiple rows of circular holes, and steel bars penetrate through the holes. The steel beam inserted in the back of the abutment is welded with an improved perforated panel connecting piece to guarantee the connecting performance. An interface of a vertical steel beam and the concrete is welded with a bearing plate. The bearing plate is connected to the back of the abutment, which resists the hogging moment effect of the abutment joint part and reduces the relative sliding amount of the bottom edge of the steel beam and the concrete. The abutment joint part of an integral type steel and concrete composite bridge is advantageous in that the common problem of a bridge expansion joint can be resolved; a failure mode of the beam-abutment joint part can be changed; joint effect can be enhanced, and bearing capacity can be increased.
Description
Technical field
The utility model belongs to technical field of bridge engineering, is specifically related to a kind of structure of key position abutment joint portion of monolithic steel reinforced concrete composite bridge.
Background technology
Monolithic combined steel plate beam bridge is promoted the use of in Short/Medium Span Bridge, can improve the damaged problem of bridge appearance that existing bridge expanssion joint causes.Girder steel-concrete abutment joint portion is the crucial force part of monolithic bridge, and the side pieces material is different, stiffness variation is larger, needs endogenetic process smooth transitions such as the suffered axle power of girder steel, shearing and moments of flexure in abutment.But the abutment joint portion stud connector design of monolithic combined bridge is relatively considered single load bearing at present, is subject to Moments in structure and does the used time, and there are larger slippage in girder steel root edge and concrete, have reduced bridge capacity.
The utility model content
The purpose of this utility model is to provide a kind of structure of abutment joint portion of monolithic combined bridge, improve the damaged problem of bridge appearance that existing bridge expanssion joint causes, cut by the pressure-bearing effect of frange plate and bearing plate, the biography effect of cutting and the pressure of connector the three kinds of modes of couple of mixing, with the internal force smooth transition in girder steel in abutment, enhancing is in conjunction with effect, and reduced girder steel root edge and concrete and be subject to Moments in structure and make the slippage of used time.
For achieving the above object, solution of the present utility model is:
The structural form of the abutment joint portion of a kind of Integral Steel and Combined concrete bridge, it mainly comprises concrete abutment, girder steel, in concrete abutment inside, distributing bar is set, and is provided with connector between girder steel, concrete abutment.
It is similar that concrete abutment structure and normal tape prop up bridge block, and the overhanging L shaped i-beam structure of the end of the external girder steel in joint portion directly vertically is inserted in the concrete abutment, is connected by connector between girder steel and concrete.
Offer a few row's circular holes on web in inserting concrete, run through reinforcing bar in hole, form a kind of connector, and the perforated panel connector that is fixedly connected with an opening on the girder steel that inserts Abutment Back is to guarantee switching performance.
The perforated panel connector plate body of opening is provided with circular hole, and an end of circular hole is provided with opening.
Three row's circular hole pitch arrangement of offering on steel beam web plate can be equidistant or unequal-interval.
On the interface on girder steel and concrete vertical direction, be fixedly connected with a bearing plate.
Produce larger compressive stress place in the girder steel end, stiffening construction is set.
Vertical main reinforcement, vertical main reinforcement welding muscle, vertical auxiliary bar and stirrup are set form reinforcing cage in the concrete abutment, and in the concrete in tension district, waling is set.
Describedly be fixedly connected as welding.
, owing to having adopted above technical scheme, the utlity model has following beneficial effect:
Insert on the web in concrete to offer and running through reinforcing bar and inserting the improved perforated panel connector that welds on the girder steel of Abutment Back in a few row's circular holes guaranteed switching performance;
Improved perforated panel connector is close with traditional perforated panel connector stress performance, but reinforcing bar can be put into perforated panel from the opening part of steel plate easily, and is simple to operate, easy construction.
The reinforcing bar of pressure zone, tensile region configuration makes abutment can continue the carrying moment of flexure under ultimate load, guarantees concrete rigidity, reduces concrete crack;
Bearing plate provides the pressure-bearing effect for concrete and steel work, is subject to Moments in structure and does the used time, and girder steel root edge and concrete slippage are diminished;
During use, the utility model in abutment, can change the failure mode of beam-Tai joint portion with the internal force smooth transition in girder steel, strengthens in conjunction with effect, thereby improves bearing capacity.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the elevational schematic view of girder steel shown in Fig. 1.
The specific embodiment
The utility model will be further described below in conjunction with drawings and Examples.
The utility model mainly comprises concrete abutment 1, girder steel 2, bearing plate 3, longitudinal stiffener 6, vertical stiffening rib 7, reinforcing bar, it is similar that concrete abutment 1 structure and normal tape prop up bridge block, the overhanging L shaped i-beam structure of the end of the external girder steel 2 in joint portion directly vertically is inserted in concrete abutment 1, is connected by connector between girder steel 2 and concrete abutment 1.
Offer some circular holes 8 on the web of the girder steel 2 in inserting concrete 1, example is offered 3 row 3 row totally nine circular holes as shown in Figure 2, and be fixedly connected with the perforated panel connector 5 that for example welds an opening on the girder steel 2 that inserts Abutment Back, some transverse reinforcements 9 are arranged circular holes and perforated panel connector 5 one row's circular holes and are vertically run through and mistake from three of web, have guaranteed switching performance.In concrete compression district, tensile region, distributing bar is set all.
In girder steel and back of the body position, boundary, coagulation earthen platform, weld a bearing plate 3 perpendicular to web near the concrete abutment outside on steel beam web plate 2, and perpendicular to bearing plate 3, for example longitudinal stiffener 6 of stiffening construction is set, avoid girder steel end capacity compression unstability.
During use, the utility model construction precision requires lowly, and the internal force smooth transition in girder steel in abutment, can be changed the failure mode of beam-Tai joint portion, strengthens in conjunction with effect, thereby improves bearing capacity.
Wherein, the steel thickness of bearing plate, the number of perforate, aperture and run through bar diameter etc. and can adjust according to the structure stress size on web, the length that runs through reinforcing bar can be according in concrete reinforcing cage, the length of reinforcing bar is definite in the same way, the concrete form of stiffening construction can be made adjustment according to the processing situation of steel plate, and this does not repeat.
Described " distributing bar is set " herein, namely arrange transversely distributed steelbar, vertical distribution reinforcement and stirrup in concrete abutment inside according to (standard " highway reinforced concrete and prestressed concrete bridge are contained design specifications ") arrangement of reinforcement principle, and this does not repeat.
The above-mentioned description to embodiment is can understand and apply the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and in the General Principle of this explanation is applied to other embodiment and needn't pass through performing creative labour.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art, should be within protection domain of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (8)
1. the structure of a monolithic composite bridge steel-concrete abutment joint portion, it is characterized in that: comprise concrete abutment, girder steel, be provided with distributing bar in concrete abutment inside, vertically be inserted in the concrete abutment with the overhanging L shaped i-beam structure of the end that the concrete abutment is combined on described girder steel, be connected by connector between girder steel and concrete abutment.
2. the structure of monolithic composite bridge steel-concrete abutment according to claim 1 joint portion, it is characterized in that: offer a few row's circular holes on the web of the i iron in inserting concrete, run through reinforcing bar in hole, form a connection piece, and the perforated panel connector that is fixedly connected with an opening on the girder steel that inserts Abutment Back is to guarantee switching performance.
3. the structure of monolithic composite bridge steel-concrete abutment according to claim 2 joint portion, it is characterized in that: the perforated panel connector plate body of described opening is provided with circular hole, and an end of circular hole is provided with opening.
4. the structure of monolithic composite bridge steel-concrete abutment according to claim 2 joint portion is characterized in that: three row's circular hole pitch arrangement of offering on described web are for equidistantly or unequal-interval.
5. the structure of monolithic composite bridge steel-concrete abutment according to claim 1 joint portion is characterized in that: be fixedly connected with a bearing plate on the interface on described girder steel and concrete vertical direction.
6. the structure of monolithic composite bridge steel-concrete abutment according to claim 1 joint portion, is characterized in that: in the girder steel end, be provided with stiffening construction.
7. the structure of monolithic composite bridge steel-concrete abutment according to claim 1 joint portion, it is characterized in that: be provided with vertical main reinforcement, vertical main reinforcement welding muscle, vertical auxiliary bar and stirrup and form reinforcing cage in the concrete abutment, and in the concrete in tension district, be provided with waling.
8. the structure of according to claim 2 or 5 described monolithic composite bridge steel-concrete abutment joint portions is characterized in that: describedly be fixedly connected as welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220721164XU CN203284726U (en) | 2012-12-24 | 2012-12-24 | Abutment joint part of integral type steel and concrete composite bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220721164XU CN203284726U (en) | 2012-12-24 | 2012-12-24 | Abutment joint part of integral type steel and concrete composite bridge |
Publications (1)
| Publication Number | Publication Date |
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| CN203284726U true CN203284726U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220721164XU Expired - Fee Related CN203284726U (en) | 2012-12-24 | 2012-12-24 | Abutment joint part of integral type steel and concrete composite bridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970800A (en) * | 2016-05-23 | 2016-09-28 | 长安大学 | Bridge abutment connection structure for integrated combination beam seamless bridge and construction method thereof |
| CN109208461A (en) * | 2018-11-15 | 2019-01-15 | 兰州交通大学 | Connecting elements and connection method between a kind of corrugated steel web plate composite box girder bridge girder and abutment |
| CN109778660A (en) * | 2019-03-18 | 2019-05-21 | 浙江兴土桥梁专用装备制造有限公司 | The Steel Bridge installed using assembled abutment |
| CN112211088A (en) * | 2020-11-01 | 2021-01-12 | 中铁二院昆明勘察设计研究院有限责任公司 | Single-span integral seamless bridge structure adopting steel box combination beam and construction method |
-
2012
- 2012-12-24 CN CN201220721164XU patent/CN203284726U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970800A (en) * | 2016-05-23 | 2016-09-28 | 长安大学 | Bridge abutment connection structure for integrated combination beam seamless bridge and construction method thereof |
| CN109208461A (en) * | 2018-11-15 | 2019-01-15 | 兰州交通大学 | Connecting elements and connection method between a kind of corrugated steel web plate composite box girder bridge girder and abutment |
| CN109778660A (en) * | 2019-03-18 | 2019-05-21 | 浙江兴土桥梁专用装备制造有限公司 | The Steel Bridge installed using assembled abutment |
| CN112211088A (en) * | 2020-11-01 | 2021-01-12 | 中铁二院昆明勘察设计研究院有限责任公司 | Single-span integral seamless bridge structure adopting steel box combination beam and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20191224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |