基于中心点法的高聚物防渗墙堤坝地震变形可靠度分析  

Seismic deformation reliability analysis of polymer cutoff wall embankment base on the central point method

作　　者：张泽瀚 薛冰寒 赵冠奇 方宏远[1,2] 石明生[1] ZHANG Zehan;XUE binghan;ZHAO Guanqi;FANG Hongyuan;SHI Mingsheng(School of Water Conservancy and Transportation,Zhengzhou University,Zhengzhou 450001,China;Yellow River Laboratory,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学水利与交通学院,河南郑州450001 [2]郑州大学黄河实验室,河南郑州450001

出　　处：《世界地震工程》2025年第1期189-196,共8页World Earthquake Engineering

基　　金：国家自然科学基金(52109169);中国科协青年人才托举工程项目(YESS20230704);中国博士后面上基金(2021M702951)。

摘　　要：高聚物防渗墙技术具有高效、微创和经济等优点,已在中小型土质堤坝除险加固中得到广泛的应用。对于建在震区的高聚物防渗墙堤坝,其在地震作用下的变形可靠度分析尚未开展。因此,基于倾度法和中心点法开展高聚物防渗墙堤坝地震变形的可靠度分析,采用倾度法评价高聚物防渗墙堤坝的坝体变形情况,通过倾度值计算地震变形的可靠度评价指标,基于中心点法对高聚物防渗墙堤坝的地震变形进行可靠度分析。对某高度为15m的高聚物防渗墙堤坝进行了分析,其设计基准期内年计地震变形失效概率P y=2.44×10-7,对应的可靠指标β=5.03,满足规范要求,为高聚物防渗墙堤坝的抗震设计和安全评价提供了依据。Polymer cutoff technology has the advantages of high efficiency,low cost and small damage,which has been widely used in the small and medium-sized embankment reinforcement project.For the polymer cutoff wall embankment built in the earthquake zone,its deformation reliability analysis under seismic action has not been carried out.Therefore,this paper carries out the seismic deformation reliability analysis of polymer cutoff wall embankment based on the inclination method and the central point method,which adopts the inclination method to evaluate the deformation of polymer cutoff wall embankmentbody,and calculate thereliability index of seismic deformation through the value of the inclination,and carries out the seismic deformation reliability analysis of polymer cutoff wall embankment based on the central point method.A polymer cutoff wall embankment with a height of 15 m was analyzed,and its seismic deformation failure probability P y=2.44×10-7,corresponding to the reliability indexβ=5.03,which meets the specification requirements,and provides a basis for the seismic design and safety evaluation of the polymer cutoff wall embankment.

关 键 词：高聚物防渗墙堤坝 可靠度分析 地震变形 倾度法 中心点法 

分 类 号：TV641[水利工程—水利水电工程]