有冻土层场地上多层砖房的震害预测方法
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摘要
以一个6层砖结构和四种场地共同组建成四个结构一地基一体化计算模型,输入唐山地震基岩地表的余震记录,计算融土场地、有冻层场地和刚性地基三种情况下结构的地震反应,通过结构基底等效输入和结构地震反应内力的比较,作者认为,对绝大多数中软场地,用现行的刚性地基假设,作多层砖房震害预测是偏于安全的。
Four computational modeles are constructed of a 6-storeyed brick building based on four different sites into a single whole, respectively. An aftershock record of the Tangshan earthquake at the surface of the base rock is the input seismic motion when computing the seismic responses of the structure on following sites: rigid foundation, with or without the frozen layer. It seems certain that the method of damage prediction for multi-storeyed brick building based on the assumption of rigid foundation for most sites with soft soil layer is on the safe side.
引文
[1] 中华人民共和国国家标准,"建筑抗震设计规范"(GBJ11-89),1989.
    [2] 中华人民共和国地震行业标准,"工程场地地震安全性评价工作规范",(DB001-94),1994.
    [3] 廖振鹏. 近场波动问题的有限元解法,地震工程与工程振动,4卷2期,1984.
    [4] 廖振鹏等. 暂态弹性波动分析中人工边界的研究地震工程与工程振动,2卷1期,1982.

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