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土钉墙地震动力分析及抗震设计方法

, PP. 34-41

Keywords: 道路工程,土钉墙,动力分析模型,边坡,地震作用,弹性地基梁

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Abstract:

?为了深入了解地震作用下土钉墙动力特性,并为其提供实用的动力分析方法,基于动力Winkler地基模型,建立了考虑面板、坡后土体及土钉协同工作的土钉墙动力分析模型,并进行了求解。该模型将面板处理为弹性地基梁,将土钉处理为一个弹簧和阻尼来替代。基于建立的计算模型和震害模式给出了其抗震设计方法,并结合具体工程实例进行了地震作用动力分析及抗震设计,最后与动力离心试验进行了验证。结果表明:土钉墙延性大,具有良好的抗震性能;土钉的峰值轴力连线与静力作用下相似;提出的分析方法对土质较均匀的边坡是可行的,为土钉墙的地震分析及抗震设计提供了一种新的途径。

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