结构动力性能与桁架拱的加固设计

Structure Dynamic Performance and Reinforcement Design of Truss Arch

依托周口市张柿园村桁架拱的加固项目,通过建立桁架拱原设计、现状结构的三维有限元模型,分析结构整体的动力性能,根据结构自振变形与刚度之间的关系,分析桁架结构的整体性能,确定薄弱环节,同时结合桁架拱使用阶段荷载与自振变形之间的关系,找出相对合理的加固方案,为复杂结构的加固分析提供了发展方向,对桁架加固设计、方案校验有较大参考意义。

Based on reinforcement project of truss arch in Zhangshiyuan Village of Zhoukou City,the dynamic performance of the whole structure is analyzed by establishing the original design and current three-dimensional finite element model of truss arch,and the overall performance of the structure is analyzed according to the relationship between the structural natural vibration deformation and stiffness,so as to determine weak link,at the same time,combined with the relationship between load and natural vibration deformation of truss arch in service stage,a relatively reasonable reinforcement scheme is found,which provides a direction for analysis on reinforcement of complex structure,and has great reference significance in reinforcement design and scheme verification.