Structural seismic response analysis based on multiscale approach of computing fault–structure system
Structural seismic response analysis based on multiscale approach of computing fault–structure system
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DOI：
10.1002/eqe.861
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发表时间：
2009-04
影响因子：
4.5
通讯作者：
T. Ichimura;M. Hori
中科院分区：
文献类型：
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作者：
T. Ichimura;M. Hori
从附近断层发出的地震波的结构安全是一个主要问题。对于大型复杂结构，可能需要通过分析断层-结构系统来估计其地震响应：一个完整的三维模型，其中对源断层和目标结构进行建模，以便可以对断层过程、波传播和放大过程以及结构的动态响应进行数值计算。为了分析这种断层-构造系统，本文提出了一种基于多尺度分析的有效方法，即在地质长度尺度上计算整个系统中从源断层发出的波；然后将它们细化到包括结构在内的系统的一小部分中，并在工程长度尺度上精确计算结构的地震响应。本文以长公路隧道为例，验证了该方法的有效性。讨论了所提出的估计结构地震响应方法的有用性和适用性。版权所有 © 2008 约翰·威利父子有限公司
Structural safety for earthquake waves emitted from a nearby fault is a major concern. For a large complex structure, it might be desired to estimate its seismic response by analyzing a fault–structure system: a full three‐dimensional model in which a source fault and a target structure are modeled so that fault processes, wave propagation and amplification processes, and resulting dynamic responses of the structure can be computed numerically. To analyze this fault–structure system, this paper proposes an efficient approach based on multiscale analysis, i.e. waves emitted from the source fault are computed in the entire system in the geological length‐scale; then they are refined in a small part of the system that includes the structure, and the seismic response of the structure is accurately computed in the engineering length‐scale. Using a long highway tunnel as an example, this paper examines the validity of the proposed approach. The usefulness and applicability of the proposed approach to estimate the structural seismic responses are discussed. Copyright © 2008 John Wiley & Sons, Ltd.