桩体特性对软土地区复合地基沉降特性影响及优化设计研究  

Influence of Pile Characteristics on Settlement Characteristics of Composite Foundation in Soft Soil Area and Its Optimal Design

作　　者：倪先栋 NI Xian-dong(Hebei Qirong Engineering Design Service Co.Ltd.,Xingtai 054000,China)

机构地区：[1]河北齐荣工程设计服务有限公司,河北邢台054000

出　　处：《工程建设与设计》2020年第21期60-62,共3页Construction & Design for Engineering

摘　　要：软土地区的建筑项目对地基承载力、沉降量等要求较为严格,复合地基法在处理软土地基时具有处治深度大、工程造价低、施工便利等优点,在软土地基处理中得到了广泛应用。鉴于此,论文以河北省某教学楼为工程依托,利用有限元分析软件FLAC3D建立复合地基计算,从桩体材料、桩长、桩径、桩间距等方面分析了桩体特性对软土地区复合地基沉降变形的影响规律,并在此基础上展开了桩体的优化设计。以期为类似的软土地基处理提供科学的理论指导。The construction projects in soft soil areas have strict requirements on the bearing capacity and settlement of the foundation.The composite foundation method has the advantages of large treatment depth,low engineering cost and convenient construction in the treatment of soft soil foundation,which has been widely used in the treatment of soft soil foundation.In view of this,based on a teaching building in Hebei Province,this paper uses the finite element analysis software FLAC3D to establish the calculation of composite foundation,and analyzes the influence of pile characteristics on the settlement and deformation of composite foundation in soft soil area from the aspects of pile material,pile length,pile diameter and pile spacing,and on this basis,the optimization design of pile body is carried out.In order to provide scientific theoretical guidance for similar soft soil foundation treatment.

关 键 词：软土 桩体刚度 复合地基沉降 优化设计 

分 类 号：U213.157[交通运输工程—道路与铁道工程]