Investigation on the wave-induced progressive liquefaction of offshore loosely deposited sandy seabed

WANG Liang-min; YE Jian-hong; ZHU Chang-qi

doi:10.16285/j.rsm.2015.12.031

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Investigation on the wave-induced progressive liquefaction of offshore loosely deposited sandy seabed

更新时间：2026-06-25

- Investigation on the wave-induced progressive liquefaction of offshore loosely deposited sandy seabed
- Vol. 36, Issue 12, Pages: 3583-3588(2015)
- 作者机构：
  
  中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北,武汉,430071
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.12.031
  CLC： TU46+2
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
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WANG Liang-min, YE Jian-hong, ZHU Chang-qi. Investigation on the wave-induced progressive liquefaction of offshore loosely deposited sandy seabed[J]. 2015, 36(12): 3583-3588.
DOI：

WANG Liang-min, YE Jian-hong, ZHU Chang-qi. Investigation on the wave-induced progressive liquefaction of offshore loosely deposited sandy seabed[J]. 2015, 36(12): 3583-3588. DOI： 10.16285/j.rsm.2015.12.031.

摘要

利用一个经过广泛验证的数值模型FSSI-CAS 2D为计算工具，采用砂土的高级本构模型Pastor-Zienkiewicz-Mark III (PZIII) 描述海床砂土的动态力学行为，定量研究松散海床地基土在波浪作用下，其内部的液化过程和特征，以加深对波致海床液化特征、性质的认识。计算结果分析表明，开发的耦合数值模型FSSI-CAS 2D能够很好地捕捉到波浪作用下欠密实海床的动力响应特征，以及海床内的累积液化过程等一些列的非线性物理现象。研究表明，波浪导致的松砂海床液化是一个渐进过程，海床表面首先液化，并逐渐向下扩展。

Abstract

The Pastor-Zienkiewicz-Mark III (PZIII) constitutive model

which can be used to describe the nonlinear behavior of sandy seabed soil

is implemented into a well-validated computer code

FSSI-CAS 2D

for analyzing the wave-seabed-structure interaction. The characteristics of wave-induced liquefaction in offshore loosely-deposited sandy seabed is quantitatively investigated. The analysis results indicate that the developed coupled numerical model FSSI-CAS 2D is capable of capturing a series of the properties of wave-induced cumulative liquefaction in loose seabed

as well as its wave-induced dynamics. The results also show that the wave-induced liquefaction in seabed is progressive. That is

wave-induced liquefaction initiates at the surface of seabed

and propagates downward under long-term wave loading.

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