CN104047226A - Reactive powder concrete thin-wall box beam of railway - Google Patents
Reactive powder concrete thin-wall box beam of railway Download PDFInfo
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- CN104047226A CN104047226A CN201410308255.4A CN201410308255A CN104047226A CN 104047226 A CN104047226 A CN 104047226A CN 201410308255 A CN201410308255 A CN 201410308255A CN 104047226 A CN104047226 A CN 104047226A
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Abstract
The invention relates to a reactive powder concrete thin-wall box beam of a railway. The span of the simply supported beam is increased, consequently, the beam height and the use amount of concrete are further increased, and the self weight of a beam body is improved. The box beam comprises a top plate, a bottom plate and a web plate, annular transverse partition plates are arranged on the edges of cavities in the two end faces of the box beam, a plurality of transverse top plate stiffening ribs are evenly arranged at the position, in a cavity of the box beam, of the bottom face of the top plate, and cast-in-place concrete is poured on the upper surface of the top plate. The top plate, the bottom plate and the web plate of the box beam are thin plates made of reactive powder concrete. Compared with a common prestress concrete box beam, the reactive powder concrete thin-wall box beam is small in structural size, light in self weight, strong in spanning capacity and convenient to construct, and has the wide application prospect.
Description
Technical field
the invention belongs to bridge engineering construction technical field, be 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 along with the increasing of 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 being by little span in total load is enlarged to 60%～70%, thereby directly has influence on the economic indicator across simply supported beam greatly.And because the deadweight of beam body sharply rises the steel using amount of construction equipment compared with conference, security risk when 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 object of this invention is 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 solution adopted in the present invention is:
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.
Top board, base plate and the web of described case beam are the thin plate that RPC makes.
The present invention has the following advantages:
Box-beam structure of the present invention 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.
Brief description of the drawings
The facade arrangement diagram that Fig. 1 is invention structure.
Fig. 2 is the A-A sectional view of invention structure.
Fig. 3 is the B-B sectional view of invention structure.
In figure, 1-top board, 2-base plate, 3-web, 4-diaphragm, 5-top board stiffening rib, 6-cast-in-situ concrete.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
A kind of railway RPC Thin-walled Box Girder the present invention 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.
Top board 1, base plate 2 and the web 3 of case beam 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 developed, 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 is all far superior to ordinary concrete and general high performance concrete.Case beam adopts RPC when design, is no matter the size that top board, base plate, web can selection of smalls, and 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 top board 1 of the present invention, 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 ensureing 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 invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skill in the art take technical solution of the present invention by reading manual of the present invention, is claim of the present invention and contains.
Claims (2)
1. 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. railway RPC Thin-walled Box Girder according to claim 1, is characterized in that:
Top board (1), base plate (2) and the web (3) of described case beam are the thin plate that RPC makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308255.4A CN104047226A (en) | 2014-07-01 | 2014-07-01 | Reactive powder concrete thin-wall box beam of railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308255.4A CN104047226A (en) | 2014-07-01 | 2014-07-01 | Reactive powder concrete thin-wall box beam of railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104047226A true CN104047226A (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410308255.4A Pending CN104047226A (en) | 2014-07-01 | 2014-07-01 | Reactive powder concrete thin-wall box beam of railway |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846732A (en) * | 2015-05-19 | 2015-08-19 | 卢国林 | Total-activity powder concrete application-based corrugated plate box beam of bridge |
| CN105421220A (en) * | 2015-12-18 | 2016-03-23 | 广东冠粤路桥有限公司 | RPC leveling board, T type beam and construction method for RPC leveling board and T type beam |
| CN105696450A (en) * | 2016-01-29 | 2016-06-22 | 中铁第勘察设计院集团有限公司 | Assembled type reactive powder concrete box girder and construction method thereof |
| CN105776979A (en) * | 2016-01-29 | 2016-07-20 | 江苏省交通规划设计院股份有限公司 | Reactive powder concrete straddle track beam and precasting technological process thereof |
| CN110438879A (en) * | 2019-07-18 | 2019-11-12 | 广东冠粤路桥有限公司 | A kind of ultra-high performance concrete bridge structure and its construction method |
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Patent Citations (8)
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| JP2004190423A (en) * | 2002-12-13 | 2004-07-08 | Ps Mitsubishi Construction Co Ltd | METHOD OF ANCHORING PC STEEL AT JOINT BETWEEN PCaPC COLUMN AND BEAM |
| CN2832898Y (en) * | 2005-11-17 | 2006-11-01 | 湖北省交通规划设计院 | Lateral bearing for deck slab of steel box girder used in wide-span road bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846732A (en) * | 2015-05-19 | 2015-08-19 | 卢国林 | Total-activity powder concrete application-based corrugated plate box beam of bridge |
| CN105421220A (en) * | 2015-12-18 | 2016-03-23 | 广东冠粤路桥有限公司 | RPC leveling board, T type beam and construction method for RPC leveling board and T type beam |
| CN105696450A (en) * | 2016-01-29 | 2016-06-22 | 中铁第勘察设计院集团有限公司 | Assembled type reactive powder concrete box girder and construction method thereof |
| CN105776979A (en) * | 2016-01-29 | 2016-07-20 | 江苏省交通规划设计院股份有限公司 | Reactive powder concrete straddle track beam and precasting technological process thereof |
| CN105696450B (en) * | 2016-01-29 | 2017-08-25 | 中铁第一勘察设计院集团有限公司 | Pin-connected panel RPC box beam and its construction method |
| CN110438879A (en) * | 2019-07-18 | 2019-11-12 | 广东冠粤路桥有限公司 | A kind of ultra-high performance concrete bridge structure and its construction method |
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Application publication date: 20140917 |
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