CN101173496A - Box-section prestressed concrete continuous beam of large cantilever arcuate flange plate - Google Patents
Box-section prestressed concrete continuous beam of large cantilever arcuate flange plate Download PDFInfo
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- CN101173496A CN101173496A CNA2007101684662A CN200710168466A CN101173496A CN 101173496 A CN101173496 A CN 101173496A CN A2007101684662 A CNA2007101684662 A CN A2007101684662A CN 200710168466 A CN200710168466 A CN 200710168466A CN 101173496 A CN101173496 A CN 101173496A
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- slab
- section
- arc
- box
- arc flange
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Abstract
The invention relates to a prestressing concrete continuous beam with big cantilever arc flanged box-section section, which is a whole new structure model prestressing concrete through beam. The middle body of the section is composed of a circular arc board, two side web plates, and a crest slab, the close chest is composed of a crest slab and an arc flange slab supporting the crest slab. The invention is characterized in that the big cantilever arc flange slab is coordinated with the smooth block of the under part and the arc parapet of the upper part, which make the whole bridge become a flesh, the appearance of the bridge become more soft and ride, and acquire a good visual effect; using the arc flange slab as the support, which change bending moment produced by the crest slab into pressure of the below arc flange slab, and then pass on the web plate, therefore, the invention increases the length of the arc flange slab greatly, and makes the probability of the big cantilever larnacilla section; the close chest which is composed of the crest slab and two side arc flange slabs, can be regarded as two boxes of the section, stressed together with the middle overall box, increasing the torsion resistant performance of the section. The invention has the advantages of well stress, construction convenience, and good economic benefit.
Description
Technical field
The present invention relates to continuous beam on a kind of prestressed concrete of brand new moulding.
Background technology
Prestressed concrete continuous beam has that seam is few, the smooth-going advantage such as comfortable of good rigidity, driving.The section form that prestressed concrete continuous beam is commonly used has fin-plate type and box section etc., and box section has good bending resistance and torsional property, and the use of transverse prestress allows adopts big Cantilever Flange Slab to become possibility.Degree of uprising prestressed concrete continuous box girder has preferably span ability, maturation job practices easily, has good economic benefit again simultaneously, becomes the first-selection of bridge type scheme in 30～120m strides the footpath scope.
But the prestressed concrete continuous box girder Mechanical Builds is comparatively simple, especially Urban Bridge to the more and more higher situation of esthetic requirement under, for we the design have higher requirement.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide a kind of stressed good, easy construction, good in economic efficiency, outward appearance is soft more smooth-going, the prestressed concrete continuous beam of the big cantilever arc shaped wing listrium box section of good visual effect.
The implementation of the object of the invention is, the prestressed concrete continuous beam of big cantilever arc shaped wing listrium box section, it is characterized in that its cross section forms the intermediate host box-shaped by circular arc base plate 2, two coxostermums 3 and top board 1, the arc shaped wing listrium 4 that top board supports is formed the closed sides case with top board 1 plate.
The present invention has not only kept stressed good, the easy construction of striding footpath degree of uprising continuous box girder greatly, intrinsic advantage such as good in economic efficiency, on moulding, make a breakthrough simultaneously, the arc shaped wing listrium of big cantilever cooperates the block of wood of bottom slyness and the railing of top arc, full-bridge becomes one, make the bridge outward appearance soft more smooth-going, obtain extraordinary visual effect; Adopt the arc shaped wing listrium to do support, the moment of flexure that top board is produced is converted into the pressure of following arc shaped wing listrium, and is delivered on the web, so just increases the length of arc shaped wing listrium greatly, makes the box section of big cantilever become possibility; The closed section that both sides arc shaped wing listrium and top board are formed can be regarded as two little chests in cross section, and is stressed jointly with middle whole chest, increased the torsional property in cross section.
The present invention is a breakthrough to traditional continuous beam moulding aspect, has not only kept the plurality of advantages such as economical and practical of traditional continuous beam, has increased the landscape effect of bridge simultaneously again, is a good try that adapts in modern society's bridge construction.
Description of drawings
Accompanying drawing is a structural representation of the present invention
The specific embodiment
With reference to accompanying drawing, the big cantilever arc shaped wing of the present invention listrium box section is formed the intermediate host box-shaped by circular arc base plate 2, two coxostermums 3 and top board 1, and 4 pairs of top boards of arc shaped wing listrium support, and forms the closed sides case with top board simultaneously.
The present invention has not only kept stressed good, the easy construction of striding footpath degree of uprising continuous box girder greatly, intrinsic advantage such as good in economic efficiency, on moulding, make a breakthrough simultaneously, the arc shaped wing listrium of big cantilever cooperates the block of wood of bottom slyness and the railing of top arc, full-bridge becomes one, make the bridge outward appearance soft more smooth-going, obtain extraordinary visual effect; Adopt the arc shaped wing listrium to do support, the moment of flexure that top board is produced is converted into the pressure of following arc shaped wing listrium, and is delivered on the web, so just increases the length of arc shaped wing listrium greatly, makes the box section of big cantilever become possibility; The closed section that both sides arc shaped wing listrium and top board are formed can be regarded as two little chests in cross section, and is stressed jointly with middle whole chest, increased the torsional property in cross section.
Claims (1)
1. the prestressed concrete continuous beam of big cantilever arc shaped wing listrium box section, it is characterized in that its cross section forms the intermediate host box-shaped by circular arc base plate (2), two coxostermums (3) and top board (1), the arc shaped wing listrium (4) that top board supports is formed the closed sides case with top board (1) plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101684662A CN101173496A (en) | 2007-11-26 | 2007-11-26 | Box-section prestressed concrete continuous beam of large cantilever arcuate flange plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101684662A CN101173496A (en) | 2007-11-26 | 2007-11-26 | Box-section prestressed concrete continuous beam of large cantilever arcuate flange plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101173496A true CN101173496A (en) | 2008-05-07 |
Family
ID=39422231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101684662A Pending CN101173496A (en) | 2007-11-26 | 2007-11-26 | Box-section prestressed concrete continuous beam of large cantilever arcuate flange plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101173496A (en) |
-
2007
- 2007-11-26 CN CNA2007101684662A patent/CN101173496A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080507 |