单桩数值模拟参数与方法的研究  

Method and parameters of numerical simulation on single pile

作　　者：刘赪炜[1] 韩煊[1] 

机构地区：[1]北京市勘察设计研究院有限公司,北京100038

出　　处：《岩土工程学报》2010年第S2期204-207,共4页Chinese Journal of Geotechnical Engineering

摘　　要：分析了模拟单桩的各种数值方法的特点,以北京地区的五棵松大型系列桩基试验中的摩擦桩和端承桩为背景,采用FLAC3D数值模拟方法中的Pile单元来模拟单桩,通过对比分析单桩在荷载与位移的关系、桩的轴力与桩身压缩的关系、桩的侧阻力和端阻力等方面的实测值与计算值,来反演分析单桩的数值模拟技术及其关键的力学参数—耦合弹簧的刚度的取值方法,了解适用于北京地区的桩基模型和参数,为今后更好地分析北京地区的桩基工程积累经验。Characteristics of some numerical simulation methods are analyzed.Based on friction and bearing piles of Wukesong large-scale serial piles foundations test in Beijing,single pile is simulated with pile structural elements of FLAC3D.By the comparisons between the measured and the simulated datas on the load deformation relationship of pile,axial forces and compression of pile shaft,shaft resistance and point resistance,the method of numerical simulation and the key mechanics parameters(coupling spring stiffness)are analyzed.So the model and parameters of pile foundations suit to Beijing area are known,and the experiences of analyzing pile foundations in Beijing are accumulated for the following projects.

关 键 词：单桩 桩土共同作用 数值分析 

分 类 号：TU473.1[建筑科学—结构工程]