Beam bridge triangular steel diaphragm and high-precision construction method thereof: Fid-Bau Portal

Beam bridge triangular steel diaphragm and high-precision construction method thereof

PENG WEIBING / HUANG CHENLU / SU WEI / TENG YAOYU / ZHANG DEMING

The invention discloses a triangular steel diaphragm of a beam bridge and a high-precision construction method thereof, and belongs to the technical field of bridge steel diaphragms. The top node widening steel plate is connected with post-poured concrete between adjacent beam flanges, and the lower node steel plates are arranged on beam webs on the two sides. The lower node steel plates on the two sides are connected with the top node widening steel plate through steel pipes; the lower node steel plates on the two sides are connected with bolt sleeves embedded in the bottoms of corresponding beam web concrete through high-strength bolts to form a transverse force transmission structure. The top node widening steel plate and the lower node steel plates on the two sides are connected through the three steel pipes to form a triangular supporting structure, and the triangular supporting structure is light in self weight, high in structural strength and easy and convenient to construct; the lower node steel plates on the two sides and the steel pipes are connected in different modes, the installation error can be adjusted, the assembly error can be conveniently controlled, and the construction precision is improved.

一种梁桥三角形钢横隔梁及其高精度施工方法，属于桥梁钢横隔梁技术领域。它包括与相邻梁翼缘之间的后浇混凝土相连接的顶部节点加宽钢板以及设置在两侧梁腹板上的下部节点钢板；两侧的下部节点钢板与顶部节点加宽钢板之间通过钢管相连接；两侧下部节点钢板均通过高强螺栓与预埋在对应梁腹板混凝土底部的螺栓套筒相连接形成横向传力结构。本发明中，顶部节点加宽钢板及两侧的下部节点钢板通过三根钢管相连接形成三角形支撑结构，其自重轻、结构强度高、施工简便；两侧的下部节点钢板与钢管之间分别采用不同的连接方式，能够对安装误差进行调节，便于控制装配误差，提高施工精度。

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