(1 河南城建学院，平顶山 467044； 2 河南建筑职业技术学院，郑州 450007；3 河南工业大学土木工程学院，郑州 450052)
［摘要］利用颗粒流理论及PFC-2D程序，模拟静压桩的打入过程，分析了打入过程中土体颗粒的结构排列、桩周土体的位移和应力的变化，并绘出应力场和位移场的等值线图，根据应力-位移场将土体的运动分成三个区域。
［关键词］静压桩；位移场；应力场；颗粒流；数值模拟
Numerical simulation of particle flow code for stress-displacement field to jacked pile down in sand soil
Ma Zhe1, Wu Chengxia2, Xiao Zhaoran3(1 Henan University of Urban Construction, Pingdingshan 467044, China； 2 Henan Technology College of Construction, Zhengzhou 450007, China; 3 Department of Civil Engineering, Henan University of Technology, Zhengzhou 450052, China)
Abstract:PFC-2D(Particle Flow Code in 2 Dimensions) is used to simulate jacked pile in the driving process. Structural arrangement of soil particle,the distribution of displacement and stress of soil around pile are analyzed primarily. The isoline of displacement field is drawn, the movement of soil is divided into three regions from the view of analysis of displacement field.
Keywords:jacked pile; displacement field; stress field; particle flow code; numerical simulation
作者简介：马哲，副教授，Email:mzmk@hncj.edu.cn。
参考文献
［1］周健，池永. 砂土力学性质的细观模拟［J］.岩土力学, 2003, 24(6):901-906.
［2］周健，池毓蔚，池永，等.砂土双轴试验的颗粒流模拟［J］.岩土工程学报, 2000, 22(6):701-704.
［3］廖雄华，等.粘性土室内平面应变试验的颗粒流模拟［J］.水利学报，2002(12)：11-17.
［4］刘文白，周健. 上拔荷载作用下桩的颗粒流数值模拟［J］.岩土工程学报,2004, 26(4):516-52.