欧美标准砂土液化判别方法解读和优化  

Interpretation and optimization of sand liquefaction evaluation methods in Eurocode and America standard

作　　者：万中喜[1] 祁丽华[1] WAN Zhong-xi;QI Li-hua(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)

机构地区：[1]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2021年第10期363-369,共7页Port & Waterway Engineering

摘　　要：多数海外项目执行欧美标准,欧美砂土液化判别方法跟中国标准存在较大差异而且比较复杂,国内大多勘察技术人员对欧美标准砂土液化判别方法尚掌握不全面、不会正确应用。对照中国水运行业抗震标准,对欧标Eurocode 8和美国Seed简化法砂土液化判别方法进行了解读。结合工程案例对3种判别方法进行对比分析,揭示了与中标的差异,并系统展示了欧美判别标准全貌,包括其原理、判别条件、判别程序、相关特点等。在此基础上,针对欧美判别方法存在的缺陷和问题,在符合标准和误差允许前提下进行简化,使利用欧美标准判别液化更加简单易行。Most overseas projects are carried out according to European standards and America standards.The European and American sandy soil liquefaction evaluation methods are quite different from Chinese standard and are more complex,which are not yet accepted widely and applied correctly by most domestic surveying technicians.This paper interpretes the Code for Seismic Design of Water Transport Engineering,the BS EN 1998-5:2004,Eurocode 8,and the America Seed method on the sand liquefaction evaluation.A comparative analysis of the three discrimination methods combined with engineering cases reveals the differences with the winning bid,and systematically displays the full picture of European and American discrimination standards,including its principles,discrimination conditions,discrimination procedures,and related characteristics.On this basis,in view of the defects and problems existing in the European and American discriminant method,the evaluation methods have been simplified under the premise of conforming to the standard and error permissible,making them easier to use the European and American standards to discriminate liquefaction.

关 键 词：砂土液化判别 欧标Eurocode 8 Seed简化法 

分 类 号：U6[交通运输工程—船舶与海洋工程] TU43[建筑科学—岩土工程]