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本文介绍新疆果子沟大桥主梁零号块施工支撑系统的设计背景、设计思路、工况分析、荷载分析及结构设计。零号块施工支撑系统是安装并支撑首节钢桁梁及桥面吊机的核心承力构件,是钢桁梁顺利安装的关键。该结构的设计需综合考虑:零号块支撑系统具体位置及标高控制要求、现场复杂的构造安装、结构传力的合理性及整个支撑系统偏载作用下的稳定性。
This article introduces the design background, design idea, working condition analysis, load analysis and structural design of the construction support system of No.0 block of main girder of Guozigou Bridge in Xinjiang. The construction support system of No. 0 block is the key bearing component for installing and supporting the first section of steel truss girders and deck cranes and is the key to the smooth installation of steel truss girders. The design of the structure should be considered synthetically: the specific position and elevation control requirements of No. 0 block support system, the complicated construction and installation on the site, the rationality of the force transmission of the structure and the stability under the partial load of the entire support system.