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本文考虑地下结构与其周围无限空间连续介质的动力相互作用,用半解析单元法分析在地震载荷作用下地下结构的动力响应,求得地下结构的变形规律、内力分布、结构与介质相互作用力、介质内力学状态、介质存在对结构反应的效应等一系列结果,并对地下结构的地震力计算进行了分析。文中所述计算方法将为地下工程抗震设计提供一种简便、实用、有效的分析手段。
This paper considers the dynamic interaction between the underground structure and the continuous medium in an infinite space around it. The semi-analytical element method is used to analyze the dynamic response of the underground structure under the action of seismic load, and the deformation law of the underground structure, the distribution of internal forces, and the interaction between the structure and the medium are obtained. There are a series of results of the mechanical state in the medium and the effect of the medium on the structure reaction, and the seismic force calculation of the underground structure is analyzed. The calculation method described in the paper will provide a simple, practical and effective analysis method for seismic design of underground engineering.