Self-insulation zigzag concrete slab girder hinge joint structure

Abstract

The invention belongs to the field of hollow slab girder bridges, and particularly relates to a self-insulation zigzag concrete slab girder hinge joint structure. The structure comprises zigzag slab girders, vibration induction heating sheets, a smooth coating, double rows of reinforcing steel bars and a waterproof diaphragm, wherein sawteeth of the zigzag slab girder are mutually staggered, the vibration induction heating sheet is attached to the lower portions of the sawteeth, the smooth coating is smeared on the sawteeth, the double rows of reinforcing steel bars are transversely inserted into the sawteeth, a hinge joint gap is formed between the two zigzag slab girders, and the upper portion of the hinge joint gap is coated with the waterproof diaphragm after concrete is poured into the hinge joint gap. According to the slab girder hinge joint structure, the defects that a traditional hinge joint structure is poor in transverse force transmission and prone to freezing and thawing damage caused by internal accumulated water are overcome, slab staggering between slab girders is reduced, the overall strength of a bridge is improved, and the service life of the bridge is prolonged.

Description

technical field [0001] The invention belongs to the field of hollow slab girder bridges, and in particular relates to a self-insulating zigzag concrete slab girder hinge joint structure. Background technique [0002] Prefabricated reinforced concrete simply supported slab bridge is the simplest structure among all bridge structures. Because of its convenient construction and simple structure, it has been widely used in medium and small span bridges. In order to make the prefabricated panels form a whole and jointly bear the load of the vehicle, there must be a horizontal connection structure between the panels. At present, the most widely used horizontal connection method is to use tongue-and-groove concrete hinge joints for connection. [0003] The tongue-and-groove concrete hinge joint not only has insufficient lateral force transmission capacity between the slabs and girders, but also easily produces misalignment between the slabs and girders. At the same time, it often p...

AI Technical Summary

Problems solved by technology

[0003] The tongue-and-groove concrete hinge joints not only have insufficient lateral force transmission capacity between slabs and girders, but also easily cause staggered platforms between slabs and girders. At the same time, various diseases, especially water seepage whitening and even freeze-thaw damage, will often occur, which will reduce the overall performance of the slab girder. performance, leading to a reduction in the safety and durability of the plate girder

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