分离式路线段高墩桥梁施工用大跨度桁架通道设计与施工

Design and Construction of Long-span Truss Passage for the Construction of High-pier Bridges in Detached Route Sections

对某分离式路线段高墩桥梁间的桁架通道进行受力分析,通过有限元软件进行模拟研究,计算在不同荷载组合作用下结构的极限受力状态是否满足强度、刚度要求,并通过荷载试验进行校核,为桁架通道结构安全评定建立指导依据。介绍施工工艺流程与注意要点,提出桁架通道一般性施工方法。

The force analysis of the truss passage between a high pier separated bridge is carried out,and the simulation study is carried out by finite element software,and whether the ultimate stress state of the structure meets the strength and stiffness requirements under different load combinations is calculated.The load test is checked to the truss passage actual performance.This approach establishes a guiding basis for structural safety assessment.The construction process and key points are introduced,and the general construction method of truss passage is proposed.