大跨度预应力混凝土刚构桥施工计算分析

大跨度预应力混凝土连续刚构桥是公路、市政桥梁常采用的主要桥型,通过对施工过程进行有效的计算分析,有利于对桥梁施工过程进行合理的控制,同时确保桥梁施工过程安全。本文通过对一跨径组合为55 m+100 m+55 m进行计算分析,对桥梁持久状况承载能力极限状态、持久状况正常使用极限状态、持久状况构件的应力、短暂状况构件的应力、结构预拱度进行了详细的计算,为同类工程提供参考。

Construction calculation and analysis of long-span prestressed concrete rigid frame bridge

Long span prestressed concrete continuous rigid frame bridge is the main bridge type often used in highway and municipal bridges.Through effective calculation and analysis of the construction process,it is conducive to the reasonable control of the bridge construction process and ensure the safety of the bridge construction process.Through the calculation and analysis of a span combination of 55 m+100 m+55 m,this paper makes a detailed calculation on the bearing capacity limit state of the bridge in the long-term condition,the normal service limit state in the long-term condition,the stress of the member in the long-term condition,the stress of the member in the short-term condition and the structural camber,so as to provide a reference for similar projects.