IMECH-IR  > 流固耦合系统力学重点实验室
Wave induced instantaneously-liquefied soil depth in a non-cohesive seabed
Qi WG(漆文刚); Gao FP(高福平)
2018-04-01
发表期刊Ocean Engineering
卷号153页码:412-423
摘要

Instantaneous liquefaction can be induced by the upward seepage force generated in a sandy seabed under wave troughs. The wave-induced pore-pressure distribution in the non-cohesive seabed with an instantaneously-liquefied layer is investigated analytically. Based on the analytical solution to Biot's consolidation equations for the response of a poro-elastic bed to water waves, the expressions of liquefied soil depth are derived with modifying the criterion for instantaneous liquefaction, which is verified with existing offshore field observations and multi-scale numerical simulations. Analytical investigation indicates that, in the instantaneously-liquefied soil layer, the buoyant weight of soil is essentially balanced by upward seepage force into a quasi-static state. Underneath the fully liquefied layer, the effective stress can be remarkably reduced. An excess pore-pressure ratio is then proposed to quantitatively evaluate the instantaneous liquefaction degree and its corresponding influential depth. Parametric studies indicate that, for a certain excess pore-pressure ratio, the influential depth decreases with increasing saturation degree, permeability of soil or water depth, but increases with increasing wave height. The influential depth of a non-cohesive seabed under waves increases significantly with reducing the threshold value of excess pore-pressure ratio, which may have much influence on the stability design for submarine structures.

收录类别SCI ; EI
语种英语
论文分区一类
力学所作者排名1
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77660
专题流固耦合系统力学重点实验室
推荐引用方式
GB/T 7714
Qi WG,Gao FP. Wave induced instantaneously-liquefied soil depth in a non-cohesive seabed[J]. Ocean Engineering,2018,153:412-423.
APA Qi WG,&Gao FP.(2018).Wave induced instantaneously-liquefied soil depth in a non-cohesive seabed.Ocean Engineering,153,412-423.
MLA Qi WG,et al."Wave induced instantaneously-liquefied soil depth in a non-cohesive seabed".Ocean Engineering 153(2018):412-423.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Qi WG(漆文刚)]的文章
[Gao FP(高福平)]的文章
百度学术
百度学术中相似的文章
[Qi WG(漆文刚)]的文章
[Gao FP(高福平)]的文章
必应学术
必应学术中相似的文章
[Qi WG(漆文刚)]的文章
[Gao FP(高福平)]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。