基于三维有限元模拟的水闸地基不均匀沉降监测预警指标研究  

Study on monitoring and early warning indicators of uneven settlement of sluice foundation based on 3D finite element method

作　　者：华明 李同春[2] HUA Ming;LI Tongchun(Shanghai Construction and Operation Centre of Dyke and Sluice,Shanghai 200080,China;College of Water Conservancy and Hydropower,Hohai University,Nanjing 210098,Jiangsu,China)

机构地区：[1]上海市堤防泵闸建设运行中心,上海200080 [2]河海大学水利水电学院,江苏南京210098

出　　处：《水利水电技术（中英文）》2022年第S01期282-290,共9页Water Resources and Hydropower Engineering

摘　　要：苏州河河口水闸采用了迄今为止国内最大的底轴驱动翻板闸门的超常规设计方案,单孔闸门宽100 m。因闸址南北两岸存在不均匀沉降,危害水闸底板、底轴等主体结构的安全。为了保障水闸的正常运行,以设计规定的底板门轴线处差异沉降不超过1.5 cm以及底板不会发生受拉破坏作为控制条件,通过改变南北岸地基沉降量ΔZ;、ΔZ;模拟地基不均匀沉降并进行有限元分析,推求得到南北闸墩不均匀沉降监测预警指标为:南边墩相对北边墩最大差异沉降1.08 cm,北边墩相对南边墩最大差异沉降1.27 cm。Suzhou River Estuary sluice adopts the unconventional design scheme of the largest bottom shaft driven flap gate in China so far,with a single hole gate width of 100 m.Due to the uneven settlement on the north and south sides of the sluice site,the safety of the main structure such as the sluice floor and bottom shaft is endangered.In order to ensure the normal operation of the sluice,the differential settlement at the axis of the floor door is not more than 1.5 cm and the floor will not be damaged by tension as the control conditions South Based on the simulation and finite element analysis of the uneven settlement of the north and South piers,the monitoring and early warning indexes of the uneven settlement of the north and South piers are obtained as follows:the maximum differential settlement of the south pier relative to the north pier is 1.08 cm,and the maximum differential settlement of the North pier relative to the south pier is 1.27 cm.

关 键 词：水闸 有限元 地基不均匀沉降 监测预警指标 

分 类 号：TV66[水利工程—水利水电工程]