半填半挖式路基静动力稳定性分析

英文篇名：Stability Analysis of Part-Cut and Part-Fill Subgrade under Static and Dynamic Loading
中文刊名：重庆交通大学学报(自然科学版)
英文刊名：Journal of Chongqing Jiaotong University(Natural Science)
作者：蒋鑫 ; 邱延峻 ; 凌建明
英文作者：JIANG Xin1 ; QIU Yan-jun2 ; LING Jian-ming1(1.Key Laboratory of Road & Traffic Engineering of the Ministry of Education ; Tongji University ; Shanghai 200092 ; China ; 2.School of Civil Engineering ; Southwest Jiaotong University ; Sichuan Chengdu 610031 ; China)
中文关键词：道路工程 ; 半填半挖式路基 ; 强度折减法 ; 地震 ; 稳定性
英文关键词：highway engineering ; part-cut and part-fill subgrade ; strength reduction method ; earthquake ; stability
出版日期：2007-12-15
机构：同济大学道路与交通工程教育部重点实验室,西南交通大学土木工程学院,同济大学道路与交通工程教育部重点实验室上海200092,四川成都610031,上海200092
年：2007
期：06
出版单位：重庆交通大学学报(自然科学版)

摘要

足够的稳定性是半填半挖式路基设计的前提.针对填挖结合部存有软弱夹层的横向半填半挖式路基,基于FLAC/SLOPE软件平台,运用强度折减法,探讨了潜在滑动面性态随软弱夹层与地基黏聚力之比值增加而演化的全过程;基于三维快速拉格朗日有限差分法FLAC3D软件平台,分析了同时受横向、竖向地震荷载作用的半填半挖式路基地震动力响应及稳定性.得出结论.半填半挖式路基必须高度重视填挖结合部的良好处理以防止可能出现的滑动失稳,地震将对半填半挖式路基产生不可忽视的影响.
Stability analysis of part-cut and part-fill subgrade has been a great concern for highway engineers.Based on the strength reduction method(SRM),a commercial software named FLAC/SLOPE was conducted to analyze the slide behavior of part-cut part-fill subgrade;at the same time,FLAC3D,a geotechnical cod e based on three dimensional fast lagrangian analysis of continua was conducted to analyze the dynamic behavior of part-cut part-fill subgrade under the earthquake dynamic loading.Some design-construction comments were provided based on the results of numerical simulation.

引文

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