董正方;朱红云;王超飞;郑彬;

• 1:河南大学土木建筑学院
• 2:北京建工路桥工程建设有限公司

摘要(Abstract)：

为了简化地下结构抗震计算,通过设置简化边界来吸收地基中波的辐射耗能,简化边界为竖向约束、水平自由,并从理论上分析了平面问题侧向边界的合理性;土体的内摩擦通过土体的阻尼耗能和塑性滞回耗能表示,讨论了土体阻尼比的合理取值;通过一个典型案例对比了土体非线性计算和等效线性化计算的结果。计算结果表明:侧向简化边界可以满足抗震计算要求;土体非线性计算时,土体阻尼比要采用土体初始剪切模量对应处的阻尼比。

关键词(KeyWords)： 阻尼;地下结构;抗震计算;人工边界;非线性;等效线性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51408195,51608174,51378258);; 开封市科技发展计划项目(1603110);; 河南省科技发展计划项目(172102210198)

作者(Author): 董正方;朱红云;王超飞;郑彬;

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DOI:

参考文献(References)：

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