Connector-free steel and ultrahigh-performance concrete combined bridge deck structure and construction method thereof

Abstract

The invention belongs to the technical field of bridge engineering and relates to a connector-free steel and ultrahigh-performance concrete combined bridge deck structure and a construction method thereof. The bridge deck structure comprises a steel bridge deck slab, a bridge deck pavement layer is paved on an ultrahigh-performance concrete layer which is paved on the steel bridge deck slab; the upper surface of the steel bridge deck slab is provided with protruding lines, and the lower portion of the steel bridge slab is provided with longitudinal stiffening ribs and transverse stiffening ribs. Compared with a steel and ultrahigh-performance concrete combined bridge deck structure with welding stud connectors, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantages that welding of a great quantity of shear connectors is avoided, and construction and repair difficulty of bridge decks can be lowered. Compared with a traditional orthotropic steel bridge deck structure, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantage that technical problems of fatigue rupture of steel structures and proneness to damages of the pavement layers can be effectively solved according to the scheme. Moreover, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantages of convenience in material acquisition, structural simplicity, quickness in construction, force reasonability and high technical and economical benefits.

Description

technical field [0001] The invention relates to a combined deck structure applied to the deck system of a long-span bridge, which belongs to the field of bridge engineering. Background technique [0002] After World War II, Germany used a large number of orthotropic steel bridge decks to restore bridges destroyed by the war. Subsequently, due to the improvement of structural analysis methods, the improvement of welding technology and the application of high-strength steel, the design and manufacture of steel bridge decks became mature, and orthotropic steel decks have been widely used in many countries. The application of orthogonal special-shaped steel bridge decks in my country began in the 1980s, began to be used on a large scale in the 1990s, and developed rapidly. [0003] However, the structure of the orthotropic steel bridge deck is complex, and there are two technical problems: the steel structure is prone to fatigue cracks, and the steel deck pavement is easily dam...

AI Technical Summary

Problems solved by technology

The structure achieves the purpose of shear connection and transmission of shear force by setting raised patterns on the upper surface of the bridge deck, and solves the traditional steel-ultra-high-performance composite bridge deck structure with heavy welding workload and cumbersome construction technology. , difficult to repair and other technical problems

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