摘要
选用能描述土体塑性特点的弹塑性本构模型,利用研制的三维有限元程序对疏桩基础的承载性状进行了分析·分析结果表明:疏桩基础既能较充分地发挥桩身侧摩阻力和桩端阻力的作用,使得桩的承载接近于其极限承载力,又能较充分地调动承台底土体参与承载,因而疏桩基础对承载力的发挥明显地优于传统桩基;同时疏桩基础对调匀中、边、角桩的桩端阻力和承台底土反力有明显的作用·分析结果与试验结果具有较好的一致性·
?Employing a elasticplastic soil model,modelling on the load bearing capacity of scattered pile foundation was carriod out by a 3DFEM program.The results show that scattered piled foundation produces strong pile shaft friction and base resistance ultimately,so that raft can sustain load efficiently.Therefore fully utilizing the pile and raft bearing capacity to produce an economical foundation is possible.Scattered pile foundation also plays an important role on averaging base resistance and raft resistance of different position.The results of analysis show a good agreement with those of corresponding experimental results.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第11期1116-1118,共3页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(40072006)
关键词
疏桩基础
承载性状
侧摩阻力
端阻力
三维有限元
scattered pile foundation
load bearing capacity
shaft friction
base resistance
3D-FEM
