高震区斜坡式护岸的岸坡稳定性分析  

Slop estability of sloping revetment under high seismic zone

作　　者：卢生军[1] 郭隆洽 LU Shengjun;GUO Longqia(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510290,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510290

出　　处：《水运工程》2024年第3期159-164,共6页Port & Waterway Engineering

摘　　要：对位于菲律宾高震区的某斜坡式护岸结构的岸坡进行稳定性评估,分析国际上主流抗震设计规范,结合该工程的具体设计条件,提出合适的地震岸坡稳定分析方法、稳定标准和分析流程,并采用Newmark法和非线性动力分析对该护岸的震后残余位移进行计算。结果表明:高震区的岸坡稳定分析宜以控制位移为目标,水准1、2地震下的残余位移宜分别不超过5、30 cm;当采用Newmark法计算时宜取其上限位移,而通过非线性动力分析可获得岸坡残余位移和最大剪应变等的分布,从而对地震下的岸坡稳定做更为全面的设计和评估。For the slope stability evaluation of a sloping revetment located in a high seismic zone in Philippines,we analyze the study of these international seismic design codes,propose an appropriate seismic slope stability analysis method,stability criteria,and analysis process based on the specific design conditions of the project,and use the Newmark method and non-linear dynamic analysis to calculate the lateral deformations of the sloping revetment after earthquakes.The results indicate that the stability analysis of sloping revetment in high seismic zones should aim to control the lateral deformations,which under Level 1 and Level 2 earthquakes are advised not to exceed 5 cm and 30 cm respectively.When using the Newmark method for calculation,its upper bound displacement should be taken,and the distribution of residual displacement and maximum shear strain obtained from the nonlinear dynamic analysis can provide a more comprehensive design and evaluation of the seismic slope stability.

关 键 词：高震区 岸坡稳定 NEWMARK法 非线性动力分析 

分 类 号：U656.3[交通运输工程—港口、海岸及近海工程]