Composite structure of three main trusses, longitudinal beams, transverse beams and concrete slabs

Abstract

The invention relates to a composite structure of three main trusses, longitudinal beams, transverse beams and concrete slabs. Side trusses of steel main trusses and middle trusses of the steel main trusses, the steel transverse beams, the steel longitudinal beams and the concrete slabs are combined through shear keys. Transverse beam joint top plates at the pitch points of the side trusses and the middle trusses are welded with the top plates of the steel transverse beams into a whole, and web plates and bottom plates of transverse beam joints are connected with web plates and bottom plates of the steel transverse beams into a whole through bolt clusters and connecting plates in a bolting mode. Longitudinal beam joint top plates at the positions of the steel transverse beams are welded with top plates of the steel longitudinal beams into a whole, and web plates and bottom plates of longitudinal beam joints are connected with web plates and bottom plates of the steel longitudinal beams into a whole through bolt clusters and connecting plates in a bolting mode. According to the composite structure of the three main trusses, the longitudinal beams, the transverse beams and the concrete slabs, the steel longitudinal beams and the steel transverse beams are arranged on a same layer, the concrete slabs, the steel main trusses, the steel transverse beams and the steel longitudinal beams are combined into a whole and bear force together. Meanwhile, the bridge surface above the concrete slabs are paved by ordinary bituminous concrete, construction is easy, combination is firm, and the structure is durable in service. The composite structure of the three main trusses, the longitudinal beams, the transverse beams and the concrete slabs is applied to the Sanmenxia Yellow River highway and railway dual-purpose bridge, and good effects are achieved.

Description

technical field [0001] The invention relates to a concrete slab composite structure with three main truss longitudinal and horizontal beams, which is mainly applied to the highway deck system of long-span steel truss bridges. Background technique [0002] For steel truss bridges with long spans and multiple main trusses, the highway deck system generally adopts orthotropic monolithic steel or concrete decks. For the orthotropic integral steel bridge deck, if ordinary asphalt concrete is used for the pavement of the bridge deck, the combination is poor, it is easy to fall off, and frequent maintenance and replacement are required, which affects the function of the bridge; if epoxy asphalt concrete is used, its compatibility with the steel bridge The combination of the panel is good, but the construction technology is difficult, the construction technology and environmental conditions are high, the cost is expensive, and its durability needs time to be further tested. For the...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned current situation, aiming to provide a three-main truss longitudinal and horizontal beam concrete composite structure that can solve the problem of bridge deck pavement, the integrity of the bridge deck system and the common stress problem, and can reduce the construction cost at the same time.

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