软土地层路基工后沉降预测及控制研究  

Study on prediction and control of post-construction settlement of subgrade in the soft soil layer

作　　者：沈卓恒 阮世强 SHEN Zhuo-heng;RUAN Shi-qiang(Hangzhou Canal Group,Hangzhou 310006,China;College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]杭州市运河集团,浙江杭州310006 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《交通科学与工程》2020年第4期17-21,共5页Journal of Transport Science and Engineering

摘　　要：以某城市在软土地层上修建的市政道路为依托,通过有限元数值模拟与Asaoka法2种计算结果的相互验证,预测了典型剖面现状路面最终稳定沉降量,探讨了采用普通路基填土材料和轻质混凝土材料回填路基等方案对路基工后沉降的影响。研究结果表明:现状路面沉降基本稳定,若采用轻质混凝土材料回填,可有效减小路基新增工后沉降量,减小幅度可达34.3%。Based on the construction of municipal road in the soft soil layer in a city,through the mutual verification of the calculation results of the finite element numerical simulation method and Asaoka method,the final stable settlement of the typical section of the current pavement is predicted.Based on this,the influence of the schemes of using common subgrade filling materials and lightweight concrete materials to backfill the subgrade on the post construction settlement of the subgrade is discussed.Results indicate that the current pavement settlement is basically stable.If the lightweight concrete material is used to backfill,the post-construction settlement of the subgrade can effectively reduce,with reduction of 34.3%.

关 键 词：软土地层 数值模拟 路基沉降 

分 类 号：TU433[建筑科学—岩土工程]