Hard rock stratum cantilever bailey beam steel trestle supporting structure and construction method thereof: Fid-Bau Portal

Hard rock stratum cantilever bailey beam steel trestle supporting structure and construction method thereof

NI MAO'AI / ZHANG KUN / ZHANG KANG / YU XUEDONG / WU XIAOHAN / GE HENGLIN / JIANG CHAO

The invention discloses a hard rock stratum cantilever bailey beam steel trestle supporting structure which comprises two temporary buttress steel pipes and a structural pier steel pipe, the bottom ends of the temporary buttress steel pipes are vertically provided with a plurality of inserting steel bars, and a supporting frame is arranged between the top ends of the two temporary buttress steel pipes. The structural pier steel pipe is arranged on one side of the temporary buttress steel pipe in parallel, a supporting assembly is arranged in the temporary buttress steel pipe and comprises supporting rods, a plurality of connecting inclined holes are formed in the pipe section of the structural pier steel pipe, and one supporting rod is arranged in each connecting inclined hole in a sliding mode. The construction method comprises the steps of bailey beam installation, temporary buttress steel pipe installation, structural pier steel pipe installation and concrete pouring. The construction method has the effects that the construction quality and the construction efficiency of the steel trestle are improved, and the construction environment application range of the steel trestle is expanded.

本申请公开了硬质岩层悬挑贝雷梁钢栈桥支撑结构，其包括临时支墩钢管以及结构墩钢管，临时支墩钢管竖直设置有两根，临时支墩钢管底端竖直设置有若干根插接钢筋，两临时支墩钢管的顶端之间设置有支撑架，结构墩钢管平行设置于临时支墩钢管的一侧，临时支墩钢管中设置有支撑组件，支撑组件包括支撑杆，结构墩钢管的管段上开设有若干连接斜孔，支撑杆在每一连接斜孔中均滑动设置有一根。施工工法包括：贝雷梁安装、临时支墩钢管安装、结构墩钢管安装与混凝土浇筑。本申请具有提高钢栈桥的施工质量以及施工效率、扩大钢栈桥的施工环境适应范围的效果。

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