Corrugated steel web set for prestress combined box girder bridge: Fid-Bau Portal

Corrugated steel web set for prestress combined box girder bridge

LI YAN / FENG HUAN / CHEN YAN / ZHU YONGXIANG / ZHANG YONG

The invention discloses a corrugated steel web set for a prestress combined box girder bridge. The corrugated steel web set comprises a top plate, a corrugated steel web set and a bottom plate, the top plate comprises an upper-layer top plate and a lower-layer top plate, the opposite faces of the upper-layer top plate and the lower-layer top plate are each provided with a plurality of horizontally-arranged strip-shaped grooves, and a protruding block is formed between every two adjacent grooves; the corrugated steel web set is symmetrically arranged between the top plate and the bottom plate and comprises a first plate body and a second plate body, the first plate body and the second plate body are attached, connecting plates are arranged at the two ends of the first plate body and the twoends of the second plate body, a compression-resistant cavity is formed between the first plate body and the second plate body, the compression-resistant cavity is of a hexagonal structure, and supporting plates are symmetrically installed inside the compression-resistant cavity. The corrugated steel web plate set is a double-layer plate body, the two corrugated steel web plates are fixed together, the compression-resistant cavity is formed in the middle, the supporting plate assembly installed in the compression-resistant cavity is matched, the structural strength of the corrugated steel webplate assembly can be improved, the thickness of the plate body does not need to be increased, manufacturing is easy, the production cost is low, the box girder self-weight and dead-load internal force are reduced, and supporting strength is improved.

本发明公开了一种用于预应力组合箱梁桥的波形钢腹板组，包括：顶板、波形钢腹板组和底板，顶板包括上层顶板和下层顶板，上层顶板与下层顶板的对立面均开设有若干个水平排列且呈条状的凹槽，相邻凹槽之间形成有凸块；波形钢腹板组对称设置在顶板和底板之间，波形钢腹板组包括板体一和板体二，板体一和板体二之间贴合且两端设置有连接板，板体一和板体二之间形成有抗压腔，抗压腔呈六边形结构且内部对称安装有支撑板。本发明为双层板体，将两个波形钢腹板固定在一起，中部形成抗压腔，并且配合在抗压腔内安装的支撑板组件，能够增加其结构强度，该板组无需增加板体的厚度，制作简单，生产成本较低，减轻了箱梁自重和恒载内力，增加其支撑强度。

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