闸基砂土地震液化及加固分析  

Seismic liquefaction and reinforcement analysis of sand in sluice foundation

作　　者：邵丽盼·卡尔江 孜吾热古丽·叶斯塔依 Shaolipan·Karjiang;Ziwureguli·Yesitayi(Irrigation and Drainage Development Center,Urumqi 830000,China;Water Resources Center of Xinjiang Uygur Autonomous Regionr,Urumqi 830000,China)

机构地区：[1]新疆维吾尔自治区灌溉排水发展中心,乌鲁木齐830000 [2]新疆维吾尔自治区水资源中心,乌鲁木齐830000

出　　处：《水科学与工程技术》2022年第5期64-66,共3页Water Sciences and Engineering Technology

摘　　要：部分水闸修建在含有砂土的地基上,当受到地震荷载作用时,地基容易出现液化现象,导致地基承载力急剧降低,对水工建筑物的安全运行带来严重威胁。通过室内试验分析不同地震荷载下,不同相对密度砂土的液化性能,得到砂土超孔隙压力随时间变化规律,探讨孔隙压力比与剪切应变的变化特征,最后提出相应闸基液化加固措施,以期为相关工程建设提供参考。Some sluice gates are built on the foundation containing sand. Therefore,when subjected to seismic load,the foundation is prone to liquefaction,resulting in the sharp reduction of foundation bearing capacity,which poses a serious threat to the safe operation of hydraulic structures. This paper analyzes the liquefaction performance of sand with different relative density under different seismic loads through laboratory tests,obtains the variation law of sand excess pore pressure with time,discusses the variation characteristics of pore pressure ratio and shear strain,and finally puts forward the corresponding liquefaction reinforcement measures of gate foundation,in order to provide reference for relevant projects.

关 键 词：地震液化 砂土 地基 加固分析 

分 类 号：TV223[水利工程—水工结构工程]