板桩护岸清淤试验变形研究及有限元分析  

Deformation Research and Finite Element Analysis on Dredging Experiments of Sheet Pile Revetment

作　　者：王福喜[1] 陈永辉[1,2] 吕建伟 刘旭[1] 陈龙[1] 许益峰 

机构地区：[1]河海大学岩土工程科学研究所,南京210098 [2]河海大学岩土力学与堤坝工程教育部重点实验室,南京210098 [3]嘉兴市港航建设开发有限责任公司,嘉兴314000 [4]上海汇壹土木工程技术有限公司,上海202153

出　　处：《武汉理工大学学报（交通科学与工程版）》2016年第5期870-875,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：水利部公益性行业科研专项项目(201501043);浙江省交通厅科技计划项目(2013W02)资助

摘　　要：以浙江嘉兴市杭平申线航道升级改造工程平湖段为依托工程,展开对垂直板桩护岸清淤试验变形研究,并通过PLAXIS有限元程序进行模拟清淤过程,对比分析现场试验数据与有限元计算结果.结果表明,实测数据与有限元计算结果接近,其土体和桩端水平位移较小,利用有限元中强度折减法计算板桩护岸极限清淤工况下的整体稳定性安全系数,与理论计算的板桩稳定性安全系数进行对比分析,得出护岸稳定性主要取决于板桩稳定性,并提出了板桩护岸的3种破坏形式.In this paper,based on Hang-Ping-Sheng line waterway upgrading project in Pinghu City of Jiaxing City,Zhejiang Province,the dredging experiments on the deformation of sheet pile revetment are conducted.Numerical simulation of the dredging process is also performed by using the finite element analysis software PLAXIS.A comparative analysis is done for the results of the field test data and numerical results.The results show that finite element calculation results are close to the measured data.The horizontal displacement of soil and pile tip is fairly small.The global stability safety factor of sheet pile revetment in limit desilting condition is calculated using the FEM strength reduction method.Through the contrastive analysis of the stability safety factor of sheet pile calculated by the theoretical calculation,it is concluded that the stability of revetment depends on the stability of the sheet pile.Three kinds of damage form of sheet pile revetment are put forward,providing valuable experience for widespread using of sheet pile in waterway reinforcement revetment.

关 键 词：板桩护岸 航道清淤 有限元分析 水平位移 稳定性分析 

分 类 号：TV861[水利工程—水利水电工程]