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Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method

A box girder construction and concrete technology, applied in bridges, bridge materials, bridge construction and other directions, can solve the problems of difficult concrete pouring and prestressing tension, high difficulty in steel making and binding, and complicated template assembly, so as to shorten the construction period. , to ensure the construction quality, the effect of convenient construction

Active Publication Date: 2016-06-29
CHINA FIRST METALLURGICAL GROUP
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Problems solved by technology

Ordinary fish-belly continuous box girders are mostly of equal cross-section. In the box girder construction, the formwork assembly is more regular, and the steel bar binding and concrete construction are relatively simple. However, the fish-belly continuous box girder with variable cross-section has irregular cross-sections, and the formwork The assembly is more complicated, the fabrication and binding of steel bars are also more difficult, and the pouring of concrete and prestressed tensioning are also more difficult

Method used

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  • Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method
  • Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method
  • Prestressed concrete variable cross-section fish-bellied type continuous box girder construction method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] see Figure 1-Figure 5 , a prestressed concrete variable cross-section fish-belly continuous box girder construction method, comprising the following steps:

[0035] 1. Set up the bracket and pre-press

[0036] The support is supported in sections. First, harden the surface of the foundation and lay wooden boards. A bowl-buckle scaffolding is set up on the wooden boards as a support. For example, a steel pipe pile support can be set up in water. The line shape of the beam section is designed, and the curved surface shaped steel frame conforming to the line shape is made of I-shaped steel a...

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Abstract

The invention discloses a prestressed concrete variable cross-section fish-bellied type continuous box girder construction method. According to the method, a formwork assembly part, steel bar binding and preserved hole setting part and box girder bottom plate and web plate concrete casting part in the existing prestressed concrete variable cross-section fish-bellied type continuous box girder construction method are improved. The construction difficulty is reduced, so that the construction of a prestressed concrete variable cross-section fish-bellied type continuous box girder becomes simple; the operation is simple.

Description

technical field [0001] The invention relates to the construction field of fish-bellied continuous box girder with variable cross-section and prestressed concrete continuous box girder in the technical field of bridge engineering, in particular to the construction method of bridge integral steel formwork assembly, concrete pouring and prestressed tensioning technology. Background technique [0002] At present, in order to make the bridge have a better landscape, fish-belly box girder bridges are mostly used. This is because the fish-belly box girder bridge has the characteristics of beautiful appearance, which conforms to the aesthetic design of the bridge. Ordinary fish-belly continuous box girders are mostly of equal cross-section. In the box girder construction, the formwork assembly is more regular, and the steel bar binding and concrete construction are relatively simple. However, the fish-belly continuous box girder with variable cross-section has irregular cross-sectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D101/28
CPCE01D21/00E01D2101/28
Inventor 徐攀殷滇苏智刚张德松
Owner CHINA FIRST METALLURGICAL GROUP
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