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Influence of Nonlinearity on Earthquake Reaction of Large-span Arch Bridge
Author(s): 
Pages: 35
Year: Issue:  4
Journal: Urban Roads Bridges & Flood Control

Keyword:  非线性拱桥地震反应;
Abstract: 该文以位于京沪高速铁路线上Ⅷ度地震区的大跨钢箱拱桥为工程背景,研究了非线性对地震反应的影响.结果表明:几何非线性的影响很小,地震反应分析时可以忽略不计;材料非线性能有效地减小拱截面所受的地震作用.因此建议大跨度拱桥在抗震设计时应注意将主次承重构件的抗震能力进行适当分级,以便有效地利用次要构件的非线性耗能来减轻主要承重构件所受的地震作用.
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