摘要
基于优化桩型的观点,将夯实水泥土桩和灌注桩组合成现浇刚性芯复合桩,充分发挥了夯实水泥土桩、灌注桩的优点,弥补了水泥土桩、灌注桩的缺点。根据弹塑性力学的增量理论,对混凝土、夯实水泥土和土采用Druker-Prager屈服准则,建立现浇刚性芯复合桩复合地基的计算模型,基于IFEPG有限元自动生成系统,编制了有限元程序。通过工程实例,对刚性芯复合桩复合地基的位移场、应力场和破坏机理进行了分析。
Based on the idea of optimization design of pile,the composite pile with cast-in-place core is formed with soil-cement pile and cast-in-place pile,which utilizes the virtue of cast-in-place pile and rammed soil-cement pile,and avoids the disadvantage of cast-in-place pile and soil-cement pile.Based on increment theory of elastic-plastic mechanics,a mathematical model for composite foundation with cast-in-place core is established by using Druker-Prager yield criterion for concrete,soil-cement and soil.The finite element program is created by the IFEPG.Through an engineering example,the displacement field,stress field and failure mechanism of composite foundation with cast-in-place core are analyzed.
出处
《工程力学》
EI
CSCD
北大核心
2010年第A01期136-140,144,共6页
Engineering Mechanics
基金
河北省建设厅项目(2008-110)
关键词
现浇刚性芯
夯实水泥土桩
复合地基
非线性
数值分析
cast-in-place core
rammed soil-cement piles
composite foundation
non-linear
numerical simulation
