波流作用下海床振荡与累积响应的半动态耦合模型

doi:10.16183/j.cnki.jsjtu.2024.071

上海交通大学学报 ›› 2026, Vol. 60 ›› Issue (1): 142-153.doi: 10.16183/j.cnki.jsjtu.2024.071

波流作用下海床振荡与累积响应的半动态耦合模型

万志朋, 崔林(), 郑东生

青岛理工大学土木工程学院, 山东青岛 266520

收稿日期:2024-03-07 修回日期:2024-04-28 接受日期:2024-07-11 出版日期:2026-01-28 发布日期:2026-01-27
通讯作者: 崔林 E-mail:cuilin@qut.edu.cn.
作者简介:万志朋(1995—),博士生,从事波流-海床-结构物相互作用研究.
基金资助:
国家自然科学基金资助项目(52271281)

A Semi-Dynamic Coupled Model of Seabed Oscillatory and Residual Response Under Wave-Current Interaction

WAN Zhipeng, CUI Lin(), JENG Dongsheng

College of Civil Engineering, Qingdao University of Technology, Qingdao 266520, Shandong, China

Received:2024-03-07 Revised:2024-04-28 Accepted:2024-07-11 Online:2026-01-28 Published:2026-01-27
Contact: CUI Lin E-mail:cuilin@qut.edu.cn.

摘要/Abstract

摘要：

波流共同作用的荷载环境下,预测波(流)致多孔海床孔压累积引起的海床液化失稳过程是至关重要的.在Biot准静态固结模型基础上,既往研究通常采用解耦模型分别讨论振荡孔隙压力和累积孔隙压力,并忽略了土体颗粒加速度引起的惯性效应对累积孔隙压力的影响.本文结合振荡与累积孔压之间的耦合作用,提出了一种波流联合作用下海床振荡与累积响应的半动态耦合模型.通过与已有水槽试验结果对比,验证了耦合算法在数值模型中的可靠性.此外,通过设置多组对照案例,深入分析了波浪参数和土体参数对累积孔压发展的影响.研究结果表明,波高、水深和相对密实度的改变会极大影响累积孔压以及最大液化深度的发展;半动态耦合模型与准静态耦合模型预测的最大液化深度差异在6%以内,反映了土颗粒加速度对孔压累积的影响.

关键词: 波流共同作用, 耦合机制, 土体动力响应, 液化准则, 最大液化深度

Abstract:

The evaluation of the wave-induced residual pore pressure in a porous seabed is vital for the prediction of the potential of seabed instability under the combined action of waves and currents. Based on the Biot’s quasi-static consolidation model, previous studies have typically used decoupled models to separately discuss oscillatory pore pressure and cumulated pore pressure, which ignores the inertia effects due to the acceleration of solid particles on the accumulation of pore pressure. In this paper, considering coupling effect between oscillatory and accumulated pore pressures, a semi-dynamic coupled model for soil dynamic response under wave-current interaction is proposed. Upon comparison with existing laboratory experimental data, the capacity of the proposed coupled method is demonstrated. A series of parametric studies were conducted to analyze the influence of wave characteristics and soil parameters on cumulative pore pressure and corresponding liquefaction. The results indicate that changes in wave height, water depth, and relative density significantly affect the accumulation pore pressure and the development of the maximum liquefaction depth. The difference in maximum liquefaction depth predicted by the semi-dynamic coupled model and the quasi-static coupled model is within 6%, indicating the influence of soil particle acceleration on pore pressure accumulation.

Key words: wave-current interaction, coupling mechanism, soil dynamic response, liquefaction criterion, maximum liquefaction depth

中图分类号:

TV16

万志朋, 崔林, 郑东生. 波流作用下海床振荡与累积响应的半动态耦合模型[J]. 上海交通大学学报, 2026, 60(1): 142-153.

WAN Zhipeng, CUI Lin, JENG Dongsheng. A Semi-Dynamic Coupled Model of Seabed Oscillatory and Residual Response Under Wave-Current Interaction[J]. Journal of Shanghai Jiao Tong University, 2026, 60(1): 142-153.

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案例编号	流体参数			G_s/(MN·m^-2)	土体参数		是否液化
案例编号	H/m	d/m	U/(m·s^-1)	G_s/(MN·m^-2)	k_s/(μm·s^-1)	D_r	是否液化
1	3.0	10.0	1.0	5.0	50	0.45	是
2	2.7	10.0	1.0	5.0	50	0.45	是
3	2.4	10.0	1.0	5.0	50	0.45	否
4	2.1	10.0	1.0	5.0	50	0.45	否
5	1.8	10.0	1.0	5.0	50	0.45	否
6	3.0	9.0	1.0	5.0	50	0.45	是
7	3.0	8.0	1.0	5.0	50	0.45	是
8	3.0	7.0	1.0	5.0	50	0.45	是
9	3.0	6.0	1.0	5.0	50	0.45	是
10	3.0	10.0	0.9	5.0	50	0.45	是
11	3.0	10.0	0.8	5.0	50	0.45	是
12	3.0	10.0	0.7	5.0	50	0.45	是
13	3.0	10.0	0.6	5.0	50	0.45	是
14	3.0	10.0	1.0	4.5	50	0.45	是
15	3.0	10.0	1.0	4.0	50	0.45	是
16	3.0	10.0	1.0	3.5	50	0.45	是
17	3.0	10.0	1.0	3.0	50	0.45	是
18	3.0	10.0	1.0	5.0	45	0.45	是
19	3.0	10.0	1.0	5.0	40	0.45	是
20	3.0	10.0	1.0	5.0	35	0.45	是
21	3.0	10.0	1.0	5.0	30	0.45	是
22	3.0	10.0	1.0	5.0	50	0.405	是
23	3.0	10.0	1.0	5.0	50	0.360	是
24	3.0	10.0	1.0	5.0	50	0.315	是
25	3.0	10.0	1.0	5.0	50	0.270	是

波流作用下海床振荡与累积响应的半动态耦合模型

A Semi-Dynamic Coupled Model of Seabed Oscillatory and Residual Response Under Wave-Current Interaction

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