砂石土散体材料桩荷载-沉降规律及参数影响分析  

Analysis of Load-settlement Law and Parameter Influences of Sand-stone Granular Material

作　　者：牟丹 MOU Dan(Shanxi Transportation Planning Survey and Design Institute Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030032

出　　处：《兰州工业学院学报》2020年第2期20-23,共4页Journal of Lanzhou Institute of Technology

摘　　要：以某散体材料桩加固路基工程为例,基于有限元数值分析方法,分析了桩体不同参数对桩体沉降的影响.结果表明:室内试验和数值模拟得到的桩顶荷载-沉降曲线二者吻合度较好,说明了模型的正确性;增大散体桩桩径,可以减小桩顶沉降,提高地基的承载力;增大散体桩桩长和压缩模量,可以减小桩顶的沉降.Taking a reinforced roadbed by bulk material piles as an example,finite element numerical software is used to simulate and analyze the influence of different parameters of piles on pile settlement.The result shows that the load-settlement curve of pile top obtained in laboratory test and numerical simulation is in good agreement,which indicates the correctness of the model.Increasing the pile diameter of loose pile can reduce the settlement of pile top and improve the bearing capacity of foundation.The settlement of pile top can be reduced by increasing pile length and compression modulus.

关 键 词：路基工程 散体材料桩 荷载试验 数值分析 

分 类 号：U416[交通运输工程—道路与铁道工程]