城市桥梁预制拼装盖梁结构设计及计算探析

Structural design and calculation analysis of precast and assembled capping beam ofurban bridge

以福州市新店外环路西段道路工程主线高架桥的大悬臂预制拼装盖梁为例,探讨预制拼装预应力混凝土盖梁的结构设计,并采用有限元分析软件MIDAS CIVIL建立空间杆系模型,研究分析预制拼装盖梁在施工阶段和使用阶段受力特点,验证预制拼装盖梁技术的可行性和合理性。

This paper introduces the structural design of precast prestressed concrete capping beam with large cantilever for the Viaduct of the Xindianwaihuan road in Fuzhou as an example.The finite element analysis software MIDAS Civil is used to establish the space truss model and the mechanical characteristics of precast assembled cap beam in construction stage and service stage are studied and analyzed,and the feasibility and rationality of the precast assembly capping technology are verified.