Seismic response analysis of earth-rock fill dam on deep overburden under viscoelastic boundary condition

IF 0.3 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria Pub Date : 2021-01-22 DOI:10.23967/J.RIMNI.2021.01.002

Long Wang, Zheng-quan Yang, Jian-ming Zhao, Xiaogang Wang, Zhu Kaibin, Xiao-sheng Liu

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Abstract

The dynamic response characteristics of an earth-rock fill dam on a deep overburden are the focus of seismic research. In particular, evaluating the influence of the earthquake safety of the dam. A dynamic response analysis of earth-rock fill dam on a deep overburden based on viscoelastic boundary conditions was used to study the influence of boundary conditions (including fixed boundary conditions and viscoelastic boundary conditions). The results show that the fixed boundary condition greatly improves the dynamic response level of the dam during an earthquake and has no obvious influence on the distribution of the acceleration response in the dam and the foundation. The difference in the calculation results under the two boundary conditions is related to the seismic input characteristics and dynamic deformation characteristics of the soil material. An analysis of the acceleration response spectrum shows that the influence of the boundary conditions on the calculation results is limited to the magnitude level of the acceleration response, while the spectral characteristics of the vibration of the dam and the foundation do not have a significant impact.

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粘弹性边界条件下深覆盖层土石坝地震响应分析

深覆盖层土石坝的动力响应特性是地震研究的热点。特别是对大坝地震安全的影响进行了评价。采用基于粘弹性边界条件的深覆盖土石坝动力响应分析，研究了边界条件(包括固定边界条件和粘弹性边界条件)对深覆盖土石坝动力响应的影响。结果表明:固定边界条件大大提高了坝体在地震作用下的动力响应水平，对坝体和坝基的加速度响应分布无明显影响;两种边界条件下计算结果的差异与地震输入特性和土材料的动力变形特性有关。对加速度响应谱的分析表明，边界条件对计算结果的影响仅限于加速度响应的量级水平，而坝体和基础振动谱特征对计算结果的影响不显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 工程技术-工程：综合

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish, Portuguese and English. The scope of the journal includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientifics and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinar exchange and thus shortens the distance between theoretical developments and practical applications.