【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.更多还原

【Abstract】 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.更多还原