隔离桩在软土筑堤过程中对保护相邻排海管道的应用  

Application of Isolation Piles to the Protection of Adjacent Row of Sewers in Soft Soil Embankment

作　　者：陈大伟 周谷城 Chen Dawei;Zhou Gucheng(Shanghai Water Engineering Design and Research Institute Co.Ltd,Shanghai 200061;Shanghai Engineerning Research Center ofRelamation Shanghai 200061)

机构地区：[1]上海市水利工程设计研究院有限公司,上海200061 [2]上海围海工程技术研究中心,上海200061

出　　处：《上海水务》2018年第3期17-20,13,共5页Shanghai Water

摘　　要：采用数值方法研究了某软土地基上大堤建造过程中对邻近排海管管道变形性状与整体安全性的影响,并对使用隔离桩作为对排海管道的保护措施进行计算分析。基于有限元程序Midas建立考虑复杂施工条件下土与结构相互作用的三维应变计算模型,对隔离桩的作用机理、隔离桩桩长、结构形式等对隔离桩实践效果的影响规律进行了研究。The deformation behavior and overall safety of the adjacent row of sewer pipes during the construction of the dike on a soft soil foundation are studied numerically. The isolation piles are used as the protective measures for the row of sewers. Based on finite element program Midas, a three-dimensional strain calculation model considering the interaction between soil and structure under complex construction conditions is established.The mechanism of action of pile, the value of pile length and the selection of isolation pile structure are analyzed. The influence of pile length and structure form on the practical effect of isolation piles are studied.

关 键 词：软土筑堤 隔离桩 排海管保护 数值模拟 变形 

分 类 号：TU471.8[建筑科学—结构工程]