| 近断层地震动对大跨钢管拱桥作用指标研究 |
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| 引用本文： | 邢帆,祝兵.近断层地震动对大跨钢管拱桥作用指标研究[J].重庆交通大学学报(自然科学版),2011,30(2):190-195. |
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| 作者姓名： | 邢帆 祝兵 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 结合地震动的频谱特性,研究了钢管混凝土拱桥受近断层地震动作用的评价指标.根据长周期、大跨拱桥结构易受地震低频分量和时域能量脉冲破坏作用的特点,提出了利用二进正交小波分解地震信号,并综合考虑各小波分量峰值对结构的作用影响,得到可以用来评价近断层地震动对所研究拱桥结构破坏作用的指标,体现了基于性能的结构抗震设计思想.
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| 关 键 词： | 钢管混凝土拱桥 近断层地震动 地震作用 评价指标 |
Seismic Action Assessment Indicator of Near-fault Ground Motion for Long-span CFST Arch Bridge |
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| XING Fan,ZHU Bing.Seismic Action Assessment Indicator of Near-fault Ground Motion for Long-span CFST Arch Bridge[J].Journal of Chongqing Jiaotong University,2011,30(2):190-195. |
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| Authors: | XING Fan ZHU Bing |
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| Institution: | (School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China) |
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| Abstract: | Assessment indicator of the near-fault ground motions on CFST arch bridge was studied.According to the fact that long-span arch bridge was liable to be destroyed by the seismic low-frequency impulse,decomposition of seismic signal by dyadic orthogonal wavelet transform was proposed;the influence of wavelet component peak values on structure was taken into account;assessment indicator of seismic action was proposed;performance-based seismic design was shown. |
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| Keywords: | CFST arch bridge near-fault ground motion seismic action assessment indicator |
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