水平旋喷拱棚承载特性及破坏机理的有限元分析  

FINITE ELEMENT ANALYSIS OF BEARING CAPACITY AND FAILURE MECHANISM OF HORIZONTAL JET GROUTING ARCH

作　　者：张慧乐[1,2] 柳建国[1,2] 张慧东[1,2] 郭冬梅[1,2] 赵琰飞[1,2] 

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]中国京冶工程技术有限公司,北京100088

出　　处：《工业建筑》2010年第9期66-69,104,共5页Industrial Construction

基　　金：岩土工程防灾减灾与治理加固关键技术研究(财企[2009]161)

摘　　要：基于水平旋喷拱棚的原位荷载试验成果,利用试验数据对有限元分析结果进行验证,表明有限元计算结果是可信的。在此基础上,对水平旋喷拱棚在外部荷载作用下的塑性变形和破坏面的形状进行计算分析,结果表明:拱棚的塑性变形首先出现在水平旋喷所成的水泥土桩体结合处,随外部荷载的增大,塑性变形区域在水泥土桩体结合处逐渐扩展并最终形成一个贯通的塑形区。The in-situ loading test was performed and the experimental data were used to verify the computational results from the finite element methods,which showed that the finite element program was reliable.By virtue of numerical analysis,the failure process can be reproduced.It is found that the plastic strains firstly appear on the junctions of cement mixing piles by horizontal jet grouting.With increasing of the load,the plastic zone expands and joints together at last.

关 键 词：数值分析 水平旋喷拱棚 原位荷载试验 塑性变形区 

分 类 号：TU476[建筑科学—结构工程]