CN204000573U - A kind of railway RPC Thin-walled Box Girder - Google Patents
A kind of railway RPC Thin-walled Box Girder Download PDFInfo
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- CN204000573U CN204000573U CN201420359149.4U CN201420359149U CN204000573U CN 204000573 U CN204000573 U CN 204000573U CN 201420359149 U CN201420359149 U CN 201420359149U CN 204000573 U CN204000573 U CN 204000573U
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Abstract
The utility model relates to a kind of railway RPC Thin-walled Box Girder.Simply supported beam span strengthens, and causes deck-molding and concrete amount further to increase, and has improved the deadweight of beam body.Case beam of the present utility model comprises top board, base plate and web, and the cavity edge of case beam both ends of the surface is provided with all diaphragms of ring, is evenly provided with the horizontal top board stiffening rib of multiple tracks on the top board bottom surface of case beam cavity, and cover top surface has performed cast-in-situ concrete; The top board of case beam, base plate and web are the thin plate that RPC makes.Box-beam structure of the present utility model and common prestressed concrete box girder ratio, physical dimension is little, and from heavy and light, span ability is strong, and constructability has broad application prospects.
Description
Technical field
the utility model belongs to bridge engineering construction technical field, is specifically related to a kind of railway RPC Thin-walled Box Girder.
Background technology
Owing to being subject to geographical conditions, natural conditions, the factor controlling such as linear, bridge need adopt large span once to cross over, if adopt the special construction bridges such as continuous beam, continuous rigid frame, can make the long increase of bridge connection, basis, bottom increases, and because the longer beam of connection portion needs set temperature adjuster, certainly will cause construction costs to increase.If adopt large span simply supported beam, both can solve due to the long long problem that needs set temperature adjuster of connection, also can solve because long connection structure seismic forces is excessive the problem of design of substructure difficulty.But the increasing along with simply supported beam span, for meeting the needs of structure stress and Deformation control, deck-molding and concrete amount will further increase, 50% left and right when making dead load proportion is by little span in total load is enlarged to 60%～70%, thereby directly has influence on greatly the economic indicator across simply supported beam.And because the deadweight of beam body sharply rises the steel using amount of construction equipment compared with conference, security risk during machine traveling is corresponding increasing also, and then strengthen comprehensive economic index.The weight of therefore managing to reduce concrete box girder becomes the key technical problem that solves these difficult problems.
Summary of the invention
The purpose of this utility model be to provide a kind of physical dimension little, from heavy and light, railway RPC Thin-walled Box Girder that span ability is strong.
The technical scheme that the utility model adopts is:
A railway RPC Thin-walled Box Girder, comprises top board, base plate and web, it is characterized in that:
The cavity edge of described case beam both ends of the surface is provided with all diaphragms of ring, is evenly provided with the horizontal top board stiffening rib of multiple tracks on the top board bottom surface of case beam cavity, and cover top surface has performed cast-in-situ concrete.
The top board of described case beam, base plate and web are the thin plate that RPC makes.
The utlity model has following advantage:
Box-beam structure of the present utility model and common prestressed concrete box girder ratio, physical dimension is little, and from heavy and light, span ability is strong, constructability.Because dead load has reduced, only need carry out a small amount of transformation to the transportation rack device of existing conventional span, just can realize the whole opening prefabricated of large span simply supported beam and set up or precast segment assembling, can not cause the waste of existing equipment and leave unused, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is is the facade arrangement diagram of utility model structure.
In figure, 1-top board, 2-base plate, 3-web, 4-diaphragm, 5-top board stiffening rib.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is described in detail.
A kind of railway RPC Thin-walled Box Girder that the utility model relates to, comprise top board 1, base plate 2 and web 3, the cavity edge of case beam both ends of the surface is provided with all diaphragms 4 of ring, on top board 1 bottom surface of case beam cavity, be evenly provided with the horizontal top board stiffening rib 5 of multiple tracks, top board 1 upper surface has performed cast-in-situ concrete.
The top board 1 of case beam, base plate 2 and web 3 are the thin plate that RPC makes.RPC (RPC) is after high-strength, high performance concrete, the cement-base composite material of the superhigh intensity of developing, high tenacity, high durable, good volume stability.According to rational proportioning and maintenance technology, this concrete compressive strength can reach 200MPa, tensile strength can reach 20～30Mpa, it is little that RPC material also has shrinkage and creep, the feature of good endurance, its impermeability, frost resistance and corrosion resistance index are all far superior to ordinary concrete and general high performance concrete.When case beam adopts RPC design, be no matter the size that top board, base plate, web can selection of smalls, a hole 48m simple supported box beam RPC gross weight is suitable with conventional 32m simple supported box beam weight, and employing Bridge Erector can set up, and also can adopt bridge fabrication machine section assembling; One hole 72m simple supported box beam RPC gross weight is less than conventional 64m concrete simple supported box beam, and existing 64m bridge fabrication machine can directly be used in the stage assembling construction of 72m simple supported box beam after appropriate reconstruction.Box-beam structure bricklaying consumption can reduce by 50% left and right compared with ordinary concrete.Because RPC Thin-walled Box Girder needs high-temperature steam curing, so construction adopts factory prefabricated stage by stage, then prefabricated member is transported to building site, adopt Bridge Erector integral erection, or adopt movable bridge fabrication machine sectionally smooth join to set up.After prefabricated section has set up, stretch-draw prestressing force steel bundle, builds bridge deck concrete, construction bridge deck.
The construction size of the utility model top board 1, base plate 2, web 3 is all less than common prestressed concrete, for improving the resistance to overturning in cross section, is provided with diaphragm 4, for guaranteeing that the larger working load such as construction period Beam transportation vehicle pass through, and are provided with top board stiffening rib 5.The 1 cast-in-situ concrete later stage of top board builds, operation stage participation structure stressed.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.
Claims (2)
1. a railway RPC Thin-walled Box Girder, comprises top board (1), base plate (2) and web (3), it is characterized in that:
The cavity edge of described case beam both ends of the surface is provided with all diaphragms (4) of ring, is evenly provided with the horizontal top board stiffening rib (5) of multiple tracks on top board (1) bottom surface of case beam cavity, and top board (1) upper surface has performed cast-in-situ concrete.
2. a kind of railway RPC Thin-walled Box Girder according to claim 1, is characterized in that:
The top board of described case beam (1), base plate (2) and web (3) are the thin plate that RPC makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420359149.4U CN204000573U (en) | 2014-07-01 | 2014-07-01 | A kind of railway RPC Thin-walled Box Girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420359149.4U CN204000573U (en) | 2014-07-01 | 2014-07-01 | A kind of railway RPC Thin-walled Box Girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204000573U true CN204000573U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420359149.4U Active CN204000573U (en) | 2014-07-01 | 2014-07-01 | A kind of railway RPC Thin-walled Box Girder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047226A (en) * | 2014-07-01 | 2014-09-17 | 中铁第一勘察设计院集团有限公司 | Reactive powder concrete thin-wall box beam of railway |
| CN106638274A (en) * | 2016-12-15 | 2017-05-10 | 湖南大学 | Unidirectional prestressed ultrahigh-performance concrete thin-walled box girder standard segment |
| CN108708456A (en) * | 2018-05-29 | 2018-10-26 | 哈尔滨工业大学 | A kind of assembling frame structure suitable for high erosion environments such as Salt Lake Areas |
-
2014
- 2014-07-01 CN CN201420359149.4U patent/CN204000573U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047226A (en) * | 2014-07-01 | 2014-09-17 | 中铁第一勘察设计院集团有限公司 | Reactive powder concrete thin-wall box beam of railway |
| CN106638274A (en) * | 2016-12-15 | 2017-05-10 | 湖南大学 | Unidirectional prestressed ultrahigh-performance concrete thin-walled box girder standard segment |
| CN106638274B (en) * | 2016-12-15 | 2018-04-17 | 湖南大学 | A kind of unidirectional prestressing force ultra-high performance concrete Thin-walled Box Girder standard segment |
| CN108708456A (en) * | 2018-05-29 | 2018-10-26 | 哈尔滨工业大学 | A kind of assembling frame structure suitable for high erosion environments such as Salt Lake Areas |
| CN108708456B (en) * | 2018-05-29 | 2020-10-02 | 哈尔滨工业大学 | Assembled frame construction suitable for high erosion environment such as salt lake area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Co-patentee after: China Railway First Survey & Design Institute Group Co., Ltd. Patentee after: CHINA RAILWAY CORPORATION Address before: 710043 Shaanxi province Xi'an Xiying Road No. two Patentee before: China Railway First Survey & Design Institute Group Co., Ltd. |