Dynamic response of underground structures in soils with variable mechanical properties

机译：力学特性变化的土壤中地下结构的动力响应

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In this work, we develop a formulation based on the Boundary Element Method (BEM) for evaluating the dynamic response of underground structures excited by seismically-induced, steady-state, horizontally polarized shear (SH) waves. The surrounding geological medium is viewed as an elastic continuum exhibiting large randomness in its mechanical properties. Suitable Green's functions are proposed and subsequently used within the context the BEM formulation. More specifically, the methodology developed herein employs a series expansion for the proposed Green's functions, where the basis functions are orthogonal polynomials of a random argument. These functions are incorporated in a BEM formulation, which is then used for the solution of problems of engineering interest. The presented approach departs from earlier BEM derivations based on perturbations, which were only valid for "small" amounts of randomness in the elastic continuum.

机译：在这项工作中，我们开发了一种基于边界元方法（BEM）的公式，用于评估地震引起的稳态水平极化偏振（SH）波激发的地下结构的动力响应。周围的地质介质被视为一种弹性连续体，在其力学性质方面表现出很大的随机性。提出了合适的格林函数，并随后在BEM公式中使用。更具体地说，本文开发的方法对所提出的格林函数采用级数展开，其中基函数是随机变量的正交多项式。这些功能被并入BEM公式中，然后用于解决工程感兴趣的问题。提出的方法与基于扰动的早期BEM推导不同，后者仅对弹性连续体中的“少量”随机性有效。

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《Third International Conference on Earthquake Resistant Engineering Structures ERES Ⅲ, 3rd, Sep, 2001, Malaga》|2001年|p.609-618|共10页
会议地点 Malaga(ES);Malaga(ES)
作者
C.Z. Karakostas;
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Institute of Engineering Seismology Earthquake Engineering (ITSAK), Thessaloniki, Greece;

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原文格式 PDF
正文语种 eng
中图分类 Tu;
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Dynamic response of underground structures in soils with variable mechanical properties

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