水平软弱土层对水闸闸室不均匀沉降影响  

On the Influence of Horizontal Soft Soil Layer on Uneven Settlement of Sluice Chambers

作　　者：夏锦铭 王拯谦 张余科 XIA Jinming;WANG Zhengqian;ZHANG Yuke(Powerchina Huadong Engineering Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州310014

出　　处：《水电与新能源》2024年第7期56-59,63,共5页Hydropower and New Energy

摘　　要：结合具体工程建立水平软弱土层上的水闸闸室三维有限元模型,分析结果表明:分洪工况下闸室不均匀沉降程度最严重;软弱土层在一定程度上加剧了不均匀沉降,并且当其接近灌注桩端部时,可能导致最大不均匀沉降差超过限值;灌注桩-土体间摩擦系数与不均匀沉降位移间成反比,闸室底板-土体间摩擦系数几乎不影响整体沉降变形。A three-dimensional finite element model of a sluice chamber built on foundation with horizontal soft soil layer is established.The analysis results show that the uneven settlement of the chamber is the most severe under the flood diversion condition.The soft soil layer exacerbates the uneven settlement to a certain extent.If it approaches the end of the cast-in-place piles,the maximum uneven settlement difference may exceed the allowable value.The friction coefficient between the piles and the soil is inversely proportional to the uneven settlement.While the friction coefficient between the chamber bottom plate and the soil has almost no effect on the overall settlement deformation.

关 键 词：水闸闸室 不均匀沉降 软弱土层 ABAQUS 

分 类 号：TV662[水利工程—水利水电工程]