强震多发区液化地基均质坝抗震除险加固研究  

Study on Seismic Risk Reduction and Reinforcement of Homogeneous Dams on Liquefied Foundation in Areas prone to Strong Earthquakes

作　　者：陆云才[1] LU Yuncai(Xinjiang Water Conservancy and Hydropower Survey and Design Institute Co.,Ltd.,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院有限责任公司,乌鲁木齐830000

出　　处：《西北水电》2024年第2期52-58,共7页Northwest Hydropower

基　　金：水利部2022年重大科技项目(SKS-2022111).

摘　　要：鉴于强震多发区液化地基均质坝缺乏完整的抗震体系结构,坝体经常遭受地震破坏。为了提高坝体的整体抗震性能,以新疆西克尔水库为研究对象,对震害成因进行了分析,从提高坝体自身抗震、抑制孔隙水压力上升、抑制孔隙水侧向流动、提高止水适应性等方面进行了系统研究,提出了固-抑-束-补系统结合的液化地基土石坝抗震加固方法,采用ABAQUS有限元软件对抗震措施的有效性进行了验证分析。结果表明所采用的抗震体系结构能够有效抵御地震对坝体和建筑物的破坏,对类似工程具有良好的借鉴意义。Due to the lack of a complete seismic system for liquefied foundation homogeneous dams in areas prone to strong earthquakes,the dam body often suffers from earthquake damage.In order to improve the overall seismic performance of the dam body,this article selects Xikele Reservoir as the study object and analyzes the causes of earthquake damage.A systematic study is conducted from aspects such as improving the dam body's own seismic resistance,suppressing pore water pressure rise,suppressing pore water lateral flow,and improving water sealing adaptability.An innovative seismic reinforcement method for liquefied foundation earth-rock dams combining solid-suppression reinforcement system is proposed.The effectiveness of seismic measures is verified and analyzed using ABAQUS finite element software.The results show that the adopted seismic system can effectively resist the damage of earthquakes to the dam and buildings.The study has good reference significance for similar projects.

关 键 词：西克尔水库 辅助抗震技术 地震液化 盖重和排水 围封 

分 类 号：TV641[水利工程—水利水电工程]