| 曾 远,蒋腊梅,贾敏才.高烈度地震区袋装砂堤液化数值模拟及措施*[J].水运工程,2025,(1):185-192 |
| 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 |
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| DOI： |
| 中文关键词: 高烈度 袋装砂堤 液化 数值模拟 FLAC 3D |
| 英文关键词:high-intensity bagged sand embankment liquefaction numerical simulation FLAC 3D |
| 基金项目:中交上海航道局科技研发项目（SHJKJ-2021-023） |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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