波浪作用下液化场地高桩码头动力响应试验研究

doi:10.16183/j.cnki.jsjtu.2022.163

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (11): 1442-1454.doi: 10.16183/j.cnki.jsjtu.2022.163

所属专题：《上海交通大学学报》2023年“船舶海洋与建筑工程”专题

波浪作用下液化场地高桩码头动力响应试验研究

毕建巍¹, 苏雷¹^,²(), 解立波¹, 张昱², 凌贤长¹^,³

1.青岛理工大学土木工程学院,山东青岛 266520
2.大连理工大学海岸与近海工程国家重点实验室, 辽宁大连 116024
3.哈尔滨工业大学土木工程学院,哈尔滨 150090

收稿日期:2022-05-16 修回日期:2022-07-15 接受日期:2022-07-21 出版日期:2023-11-28 发布日期:2023-12-01
通讯作者: 苏雷,教授,博士生导师;E-mail: sulei@qut.edu.cn.
作者简介:毕建巍(1998-),硕士生,从事波流荷载下高桩码头动力特性研究.
基金资助:
国家自然科学基金(42072310);国家自然科学基金(51808307)

Experimental Investigation of Dynamic Response of Pile-Supported Wharf in Liquefiable Ground Under Wave Action

BI Jianwei¹, SU Lei¹^,²(), XIE Libo¹, ZHANG Yu², LING Xianzhang¹^,³

1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, Shandong, China
2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
3. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received:2022-05-16 Revised:2022-07-15 Accepted:2022-07-21 Online:2023-11-28 Published:2023-12-01

摘要/Abstract

摘要：

高桩码头广泛应用于深水港口工程建设中,且大多位于可液化场地,波浪作用对液化场地高桩码头工作性能的影响不可忽视,但鲜有研究报道.进行液化场地高桩码头模型波浪水槽试验,考虑波浪、码头和土层三者之间的相互作用,真实再现高桩码头使用环境,探索波浪作用下码头内部响应差异,分析波浪作用下码头桩基和土层动力响应,探讨波高变化对各动力响应的影响规律.结果表明:高桩码头面板加速度和位移响应随波浪作用时间增加先逐渐变大最终保持相对稳定;群桩内各桩受到的动水压力和变形差异明显,其变化规律与桩位置有直接联系;自由场和桩周土层孔压响应幅值随埋深增大而减小,群桩的存在会降低桩周土层孔压的响应,增大土层加速度的响应;波高的增加对土层的影响随深度的增加而减小.上述研究成果可为波浪作用下类似高桩码头试验提供参考,为高桩码头合理化设计和防波浪侵袭提供支持.

关键词: 波浪作用, 高桩码头, 动力响应, 液化场地, 模型试验

Abstract:

Pile-supported wharf (PSW) is widely used in the deep-water port engineering construction, most of which are located in liquefiable ground. The effect of wave action on the working performance of PSW in liquefiable ground cannot be ignored, but few studies have been reported. This study performs the wave flume test of PSW in liquefiable ground considering the soil-structure-wave interaction. This test really reproduces the operating condition of PSW, and explores the internal response difference of wharf structure under wave. The influence of wave height on dynamic response of the PSW system is discussed systematically. The result shows that the acceleration and displacement of the PSW deck gradually increase first and finally remain relatively stable with the increase of wave action. The hydrodynamic pressure and deformation of each pile in pile group are obviously different, and the response variation is related to the pile position. The pore pressure of the soil layer in the free field and around the pile decreases with the increase of depth, and the existence of the pile group can reduce the pore pressure in the soil layer around the pile, and increase the acceleration of the soil layer. The effect of wave height on the soil layer decreases with the increase of depth. The above results can provide reference for the similar PSW test under wave and the support for the design and wave protection of PSW.

Key words: wave action, pile-supported wharf, dynamic response, liquefiable ground, model test

中图分类号:

U656.113

毕建巍, 苏雷, 解立波, 张昱, 凌贤长. 波浪作用下液化场地高桩码头动力响应试验研究[J]. 上海交通大学学报, 2023, 57(11): 1442-1454.

BI Jianwei, SU Lei, XIE Libo, ZHANG Yu, LING Xianzhang. Experimental Investigation of Dynamic Response of Pile-Supported Wharf in Liquefiable Ground Under Wave Action[J]. Journal of Shanghai Jiao Tong University, 2023, 57(11): 1442-1454.

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波浪作用下液化场地高桩码头动力响应试验研究

Experimental Investigation of Dynamic Response of Pile-Supported Wharf in Liquefiable Ground Under Wave Action

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