高烈度地震区袋装砂堤液化数值模拟及措施  

Numerical simulation and measures of liquefaction of bagged sandembankment in high-intensity seismic areas

作　　者：曾远 蒋腊梅 贾敏才[3] ZENG Yuan;JIANG Lamei;JIA Mincai(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China;CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120 [2]中交第三航务工程勘察设计院有限公司,上海200030 [3]同济大学地下建筑与工程系,上海200092

出　　处：《水运工程》2025年第1期185-192,共8页Port & Waterway Engineering

基　　金：中交上海航道局科技研发项目(SHJKJ-2021-023)。

摘　　要：袋装砂以工期快、造价低、适应性强的特点得到广泛应用。但对袋装砂液化问题的研究较少,尤其是高烈度地区,袋装砂无法像普通吹填砂一样进行密实处理,在强震作用下,袋装砂棱体的液化变形成为不可忽略的因素,液化问题已经成为袋装砂棱体在海外强震国家和地区推广应用的制约。本文采用FLAC 3D对袋装砂堤在强震作用下的场地液化度、加速度等动力响应进行深入分析,并提出了降低液化的措施。对袋装砂棱体结构在东南亚市场推广应用起到借鉴作用。Bagged sand has been widely used due to its fast construction period,low cost and strong adaptability.However,there are few studies on the liquefaction of bagged sand,especially in high-intensity seismic areas,where bagged sand cannot be compacted like hydraulic fill sand.Under strong earthquake conditions,the liquefaction deformation of bagged sand embankment has become a non-negligible factor,and the liquefaction problem has become a restriction on the promotion and application of bagged sand embankment in overseas high-intensity seismic countries and regions.In this paper,FLAC 3D is used to analyze the dynamic response of the bagged sand embankment under strong earthquakes,such as liquefaction degree and acceleration,and measures to reduce liquefaction are proposed.It can be used as a reference for the promotion and application of bagged sand structure in the Southeast Asian market.

关 键 词：高烈度 袋装砂堤 液化 数值模拟 FLAC 3D 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] TU435[交通运输工程—船舶与海洋工程]