摘要
为分析洞庭湖区新建南益高速公路软土水泥搅拌桩复合地基各因素对工后沉降影响水平,运用ABAQUS有限元软件建立水泥搅拌桩复合地基数值模型,对其运营期工后沉降控制效果进行分析。结果表明:洞庭湖区软基工后沉降随桩间距的减小、桩长的增大、桩径的增大而减小,其中桩间距对软基工后沉降的影响水平最高,桩径对软基工后沉降的影响水平最低;建议水泥搅拌桩处治软土地基时,采用短而密的布桩方式以更好地控制软基工后沉降。
In order to analyze the influence level of various factors on post-construction settlement of the composite foundation of soft soil cement mixing pile of the newly-built Nanyi highway in Dongting Lake area,a numerical model of the composite foundation of cement mixing pile has been established by the finite element software ABAQUS to analyze the control effect of post-construction settlement during its operation period.The results show that the post-construction settlement of soft foundation in Dongting Lake area decreases with the decrease of pile spacing,increase of pile length and pile diameter.In which the influence level of pile spacing on post-construction settlement of soft foundation is the highest,while the influence level of pile diameter is the lowest.It is recommended to use short and dense piles to better control the post-construction settlement of the soft foundation when treating soft soil foundation with cement mixing piles.
作者
付登博
谢继登
王中恩
贾阳磊
李攀
FU Dengbo;XIE Jideng;WANG Zhongen;JIA Yanglei;LI Pan(China Construction Fifth Engineering Bureau Co.,Ltd.,Changsha 410000,China;Poly Changda Engineering Co.,Ltd.,Guangzhou 510000,China;Anhui Road and Bridge Engineering Group Co.,Ltd.,Hefei 230000,China)
出处
《路基工程》
2021年第4期104-109,共6页
Subgrade Engineering
关键词
湖相软土
软基沉降
水泥搅拌桩
数值模拟
影响因素
lacustrine soft soil
soft foundation settlement
cement mixing pile
numerical simulation
influence factors
