单柱式墩高架桥考虑高阶振型影响的简化非线性抗震分析  

Analysis on the Influence of Simplified Nonlinear Seismic on Single Column Pier of the Viaduct Considering Higher Modes

作　　者：冷鑫[1] 

机构地区：[1]西安铁路职业技术学院陕西西安710600

出　　处：《西安铁路职业技术学院学报》2013年第1期6-9,共4页Journal of Xi’an Railway Vocational & Technical Institute

摘　　要：摘要：讨论了高阶振型对结构非线性反应的影响以及对规则程度不同的钢筋混凝土单柱式墩高架桥梁结构进行Pushover分析时高阶振型的贡献。使用考虑高阶振型影响的Pushover分析方法与仅考虑一阶振型的Pushover分析方法和非线性动力时程分析方法进行比较。对于较不规则的桥梁结构，考虑高阶振型影响的简化非线性分析方法能得到较好的分析结果。The influence of the higher modes and their consideration in the pushover analysis of reinforced concrete single column bent viaducts with different degree of irregularity is discussed. Typical multimode pushover - based methods are addressed and compared with a single mode procedure and inelastic time history analysis. In the condi- tion of slightly irregular viaducts, the method which include the influence of higher modes can get a well results.

关 键 词：高阶振型 简化非线性抗震分析 不规则程度 

分 类 号：TU311.2[建筑科学—结构工程]