A Hybrid Procedure for Dynamic Deformation Analysis of Embankment Dams

IF 3.6 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-09-24 DOI:10.1002/nag.70074

Ashok K. Chugh

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引用次数: 0

Abstract

A simple and effective procedure is presented to calculate permanent deformations in earth dams caused by seismic events. The procedure uses strain‐compatible shear moduli from one‐dimensional wave propagation analysis to calculate permanent deformations in the stream and dam‐axis directions using continuum‐mechanics‐based procedure. The continuum analysis results are used to identify regions of tensile stresses where cracks are likely to occur due to the seismic event. Validity of the procedure is checked by comparing results of computed deformations and tension zones with measured post‐seismic deformations and crack locations on two well‐instrumented earth dams. The computed deformations and tension zone locations are also compared with the results obtained by two‐ and three‐dimensional continuum‐based numerical analyses of the same dams by others. The proposed procedure includes the influence of reservoir water and is applicable to stable but otherwise deformable structures founded on rock or firm soil stratum. The information presented is expected to be of interest to engineers in dam engineering practice.

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堤坝动力变形分析的混合方法

提出了一种简单有效的计算地震作用下土坝永久变形的方法。该程序使用来自一维波传播分析的应变兼容剪切模量，使用基于连续介质力学的程序计算溪流和坝轴方向的永久变形。连续体分析结果用于识别由于地震事件可能发生裂缝的拉应力区域。通过比较计算的变形和张力区结果与测量的地震后变形和裂缝位置在两个仪器良好的土坝上的有效性来检查程序。计算的变形和拉区位置也与其他学者基于二维和三维连续体的数值分析结果进行了比较。所提出的程序包括水库水的影响，适用于建立在岩石或坚固土层上的稳定但不变形的结构。所提供的资料可望对水坝工程实践的工程师有兴趣。

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来源期刊

International Journal for Numerical and Analytical Methods in Geomechanics 工程技术-材料科学：综合

CiteScore

6.40

自引率

12.50%

发文量

160

审稿时长

9 months

期刊介绍： The journal welcomes manuscripts that substantially contribute to the understanding of the complex mechanical behaviour of geomaterials (soils, rocks, concrete, ice, snow, and powders), through innovative experimental techniques, and/or through the development of novel numerical or hybrid experimental/numerical modelling concepts in geomechanics. Topics of interest include instabilities and localization, interface and surface phenomena, fracture and failure, multi-physics and other time-dependent phenomena, micromechanics and multi-scale methods, and inverse analysis and stochastic methods. Papers related to energy and environmental issues are particularly welcome. The illustration of the proposed methods and techniques to engineering problems is encouraged. However, manuscripts dealing with applications of existing methods, or proposing incremental improvements to existing methods – in particular marginal extensions of existing analytical solutions or numerical methods – will not be considered for review.