A cable-stayed bridge system with twin towers and composite girders and its construction method

A hybrid beam and system technology, applied in the direction of cable-stayed bridges, bridges, bridge forms, etc., can solve problems such as fast construction speed, poor bonding effect of steel-concrete joints, and complicated construction techniques
CN104294747BInactive Publication Date: 2016-05-18TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2016-05-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a double-tower hybrid beam cable-stayed bridge system. The double-tower hybrid beam cable-stayed bridge system comprises a hybrid beam composed of a concrete beam and a composite beam. The concrete beam and the composite beam are connected through a joint section. The concrete beam is a bilateral ribbed beam and comprises two concrete beam ribs. The composite beam comprises two main steel beams, and the main steel beams are each of an I shape and each comprise a main steel beam top plate, a main steel beam bottom plate and a main beam steel web. The joint section comprises a concrete beam rib-main steel beam connection structure composed of a front pressure bearing plate, a rear pressure bearing plate and a joint section steel web, and the main steel beam top plates and the main steel beam bottom plates stretch into the concrete beam ribs. The double-tower hybrid beam cable-stayed bridge system is reasonable in structural design, convenient to construct, high in construction speed, good in use effect and good in connection effect of a steel-concrete joint part. Meanwhile, the invention further discloses a construction method of the double-tower hybrid beam cable-stayed bridge system. The construction method includes the steps of lower portion supporting structure and main tower construction and hybrid beam construction. The construction method is simple, easy to implement, short in construction period and good in construction effect.
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Description

technical field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a double-tower composite girder cable-stayed bridge system and a construction method thereof. Background technique

[0002] The main girder materials of cable-stayed bridges generally include steel and concrete. The main girders can be divided into steel girders, concrete girders, composite girders and hybrid girders according to the different combinations of these two materials. Composite beams are composed of steel and concrete in the cross section, which is a combination of different materials in the cross section. The advantages of composite beams are that concrete slabs are used instead of orthotropic steel bridge decks, which are economical, have high rigidity, and can be disassembled into small components for easy transportation and installation. However, the disadvantage is that the bridge deck cracking problem needs to be solved. The composite gi...

Claims

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