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土-结构相互作用对结构碰撞的影响分析

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摘要 采用弹性半空间假定,推导了考虑土-结构相互作用体系的地震响应方程;选取合适的碰撞模型,推导出每个时程下的碰撞力,建立结构碰撞响应方程;地震激励和碰撞激励共同作用下,采用优化的Newmarkβ法利用MATLAB编程得出实际的碰撞时程曲线。研究表明:考虑土-结构相互作用可以降低结构的碰撞响应;采用轻质材料或其他措施调整两结构间的碰撞刚度,使其与结构的振动性能相匹配,可有效降低碰撞对结构的影响。
作者 贺业飞
出处 《四川建筑》 2023年第4期170-171,共2页 Sichuan Architecture
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