Structure and construction method of upper and lower steel plate sandwich steel-concrete combined bridge deck slab

Abstract

The invention discloses a structure of an upper and lower steel plate sandwich steel-concrete combined bridge deck slab. The structure comprises a top steel plate (1) and a bottom steel plate (2). Thebottom steel plate (2) is fixedly connected with main beams (3) below the bottom steel plate (2). Multiple web plates (4) are arranged between the top steel plate (1) and the bottom steel plate (2) in the transverse bridge direction. Multiple chambers are formed in the top steel plate (1) and the bottom steel plate (2) by means of the adjacent web plates (4), high-flowability concrete (6) is poured into the chambers, and the structure of the upper and lower steel plate sandwich combined bridge deck slab is formed. The invention further discloses a construction method of the upper and lower steel plate sandwich steel-concrete combined bridge deck slab. By means of the structure of the upper and lower steel plate sandwich steel-concrete combined bridge deck slab, the fatigue problem of orthotropic steel bridge deck slabs is solved, and the problems of durability and large dead weight of negative bending moment area cracking of concrete bridge deck slabs are also solved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and more specifically relates to an upper and lower steel plate sandwich type steel-concrete composite deck structure and a construction method. Background technique [0002] The bridge deck structure is a key part of bridge design. The bridge deck directly bears the vehicle load and transmits the load to the main girder. For long-span steel bridges, there are mainly concrete bridge deck structures in the form of orthogonal steel bridge decks and composite beams. [0003] Orthogonal different-steel bridge deck is a bridge deck structure in which longitudinal and transverse stiffeners and cover plates jointly bear the load. It has many welds and a complex structure. It has the advantages of light weight, strong spanning ability, and wide application range. However, the local stiffness of the bridge deck is small, and the problems of fatigue and bridge deck pavement are more prominent, ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides an upper and lower steel plate sandwich steel-concrete composite bridge deck structure, which not only solves the fatigue problem of the orthotropic steel bridge deck, but also solves the fatigue problem of the concrete bridge deck. The durability problem of cracking in the negative bending moment area and the problem of large self-weight

Images