《Journal of Geotechnical and Geo-environmental Engineering》杂志刊登“采用简易和高等数值方法分析土堤的抗震性能”

作者：Gaetano Elia and Mohamed Rouainia

刊物：《Journal of Geotechnical and Geo-environmental Engineering》，2013年7月，139卷第7期，1115–1129页

关键词：堤防稳定性；地震荷载；本构模型；有限元方法；土动力学

摘要：正确识别工程地点相关的地震记录并，并采用能准确预测该地震力作用下土体变形的本构关系对实现完全基于抗震性能的土工结构设计的十分必要的。本文采用简易衰减模型与高等数值分析范围内不同的方法，对一个土坝的地震响应估算进行了数值研究。采用随动硬化本构模型对粘性土的力学特性进行了描述。根据现实中的一个灾害评估选择了5种地震确定了相关的地震峰值加速度和坝址处的频谱。在土坝的地震响应评估中考虑了两种设计水平。对地震过程中不同方法得到的永久累积位移进行了比较，并给出了每种方法的局限性和优点。

Seismic Performance of Earth Embankment Using Simple and Advanced Numerical Approaches

Authors: Gaetano Elia and Mohamed Rouainia

Journal: Journal of Geotechnical and Geoenvironmental Engineering, Volume 139, Issue 7(July 2013), 1115–1129

Key words: Embankment stability, Earthquake loads, Constitutive models, Finite-element method, Soil dynamics

Abstract: To fully implement seismic performance-based design for geotechnical structures, it is necessary to be able to correctly identify relevant earthquake records for the site in question in conjunction with advanced constitutive models that can accurately predict soil deformation resulting from these dynamic actions. In this paper, a numerical study is conducted to assess the seismic response of an earth dam using different approaches ranging from simple regression models to advanced numerical analyses. A kinematic hardening constitutive model is used to describe the mechanical behavior of the involved clayey soils. Five ground motions are chosen based on an existing hazard assessment to determine the relevant peak ground acceleration and frequency content at the dam site. Two design levels are considered in the evaluation of the seismic response of the earth dam. A comparison in terms of permanent accumulated displacements during the shaking obtained by the different approaches is presented highlighting their limitations and advantages.

原文链接：http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000840