同济大学学报（自然科学版）2017，Vol.45Issue(9)：1298-1303,6.DOI:10.11908/j.issn.0253-374x.2017.09.007
基于有效固结应力法的加筋垫层路堤稳定性计算方法
Application of Effective Consolidation Stress Method to Stability Analysis of Reinforced Embankment over Soft Foundation Soils
摘要
Abstract
The effective consolidation stress method was empolyed to analyze the stability of reinforced embankment over soft foundation soils by taking into consideration the characteristics of staged-filling subgrade in construction.Based on the working mechanism of reinforced cushion,its two principles in improving the stability of embankment were illustrated by analyzing the tensile force of geosynthetics and the overall stability analysis of the embankment with limit equilibrium method.The results show that not only the tensile force of geosynthetics can resist the sliding force directly on the tangent of potential failure surface,but its normal component also can enhance the shear strength of foundation soils.With a consideration of the function of reinforced cushion and the consolidation of soft foundation soils during construction process,a modified formula of effective consolidation stress method was proposed for analyzing the stability of reinforced embankment over soft foundation soils,whose features and applicability were tested in the engineering projects.关键词
软基/路堤/加筋垫层/稳定性/有效固结应力法Key words
soft foundation/embankment/reinforced cushion/stability analysis/effective consolidation stress method分类
交通工程引用本文复制引用
徐超,曾庆元,汪天池..基于有效固结应力法的加筋垫层路堤稳定性计算方法[J].同济大学学报（自然科学版）,2017,45(9):1298-1303,6.基金项目
国家自然科学基金(41272293) （41272293）
