宁夏大学学报（自然科学版）2017，Vol.38Issue(2)：153-157,5.
超长桩基础有限元强度折减极限荷载判定方法
Estimating Method of Ultimate Load of Super-long Pile by Finite Element Limit Analysis Method of Strength Reduction
摘要
Abstract
Super-long pile foundation is an important foundation type in civil engineering.It has the characteristics of high load-bearing and overlength pile length,but the estimation of ultimate load is costly,time-consuming and difficult.The heaped method of static load test,self-balanced method,incremental load method and strength reduction method are applied to study the estimating ultimate load of a super-long pile foundation,and the change of pile top displacement and pile end resistance under ultimate load are analyzed.The results show that the strength reduction method of ultimate load is suitable for the judgment of ultimate load of super-long pile foundation,the yield criterion and the criterion are applied to the limit analysis of super-long pile foundation suitably,and its computing solutions reflect the ultimate bearing capacity mechanism of super-long pile foundation.This method can be used to provide designing parameters for the initial design and load test design of super-long pile foundation.关键词
超长桩/有限元/强度折减法/载荷实验/极限荷载Key words
super-long pile/finite element method/strength reduction method/static loading test/ultimate load分类
建筑与水利引用本文复制引用
辛利伍,董天文,宋晨光,郑颖人..超长桩基础有限元强度折减极限荷载判定方法[J].宁夏大学学报（自然科学版）,2017,38(2):153-157,5.基金项目
国家自然科学基金资助项目(51178457) （51178457）
重庆市自然科学基金重点资助项目(cstc2012jjys0001) （cstc2012jjys0001）
中冶沈勘科技项目(KJYF2017-003) （KJYF2017-003）
