锥形柱考虑损伤累积效应的强震下竖向承载力分析
- 摘 要
-
（中国建筑设计研究院，北京 100044）[摘要]为精确描述混凝土和钢材在地震作用下强度和刚度的退化规律，在混凝土Faria-Oliver模型和钢材K&K模型的基础上，分别引入损伤模型进行修正。运用考虑损伤累积效应的修正Faria-Oliver模型和修正K&K模型，对天津大学新校区综合体育馆中一典型锥形柱进行竖向承载力分析，结果表明考虑材料损伤累积效应，锥形柱的竖向极限承载力和强震作用后的竖向剩余承载力显著降低。[关键词]锥形柱;损伤模型;损伤累积效应;竖向极限承载力;竖向剩余承载力中图分类号：TU352 文献标志码：A 文章编号:1002-848X(2013)S1-0606-04Seismic vertical capacity analysis of the cone shaped column considering damage accumulationWu Min, Ren Qingying, Liu Wenting(Abstract: To describe accurately the degradation of concrete and steel strength and stiffness due to the severe earthquakes, the damage model was defined in the constitutive model for concrete material and steel material separately. Analysis on the vertical capacity of the cone shaped column which belongs to the multi-purpose sports stadium of Tianjin University in the new campus under severe earthquake using the modified Faria-Oliver model and modified K&K model was conducted, and the results showed that consideration of damage accumulation indicated decrease the member vertical ultimate and rest capacity after the earthquake dramatically.Keywords: cone shaped column; damage model; damage accumulation effect; vertical ultimate capacity; vertical rest capacity
