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公路减隔震桥梁的地震反应简化分析

DOI: 10.3969/j.issn.1006-7043.201305051

Keywords: 公路桥梁, 地震反应, 减隔震设计, 单自由度反应谱法, 阻尼修正方法

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Abstract:

采用单自由度反应谱方法对满足一定条件的减隔震桥梁进行地震反应分析可以简化计算过程,但需要解决精度问题。针对规范反应谱阻尼修正方法对计算精度的影响进行了分析并提出了改进方法。为了验证改进方法的合理性,对一座常规减隔震桥梁分别采用不同计算方法进行了比较分析,结果表明采用改进的阻尼修正公式后,简化反应谱方法的计算精度得到很大提高,且结果偏于安全。

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