SEISMIC ANALYSIS OF BRIDGE PIER IN DEEP WATER CONSIDERING PILE-SOIL INTERACTION

被引：0

作者：

Chen, Yu ^{[1
]}

Wu, Jia-Liang ^{[1
]}

Wu, Kun ^{[1
]}

Huang, Xin ^{[1
]}

Li, Chang-Hui ^{[1
]}

机构：

[1] School of Transportation Science and Engineering, Civil Aviation University of China, Tianjin

来源：

Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷 / 08期

关键词：

bridge structure; centrifuge shaking table test; hydrodynamic pressure; numerical analysis; pile-soil interaction; seismic response;

D O I：

10.6052/j.issn.1000-4750.2022.06.0584

中图分类号：

学科分类号：

摘要：

The seismic effect of pile-soil interaction on deep-water bridges with pile foundation is significant, and it is important for seismic design of these bridges to consider the effect of pile-soil interaction. A numerical simulation method for seismic response of bridge piers is proposed considering both the hydrodynamic pressure by additional mass method and the pile-soil interaction by a fine model, in which the initial ground stress is introduced by dynamic relaxation method. The proposed simulation method is verified through a centrifuge shaking table test. Then, the influence of seismic intensities and soil strengths on the seismic response of a deep-water bridge pier is analyzed. The results show that the pier displacement decreases as the soil strength increases, and the rule is not affected by the existence of water bodies. The hydrodynamic pressure has a small effect (less than 10%) on the seismic responses of the pier and the pile in soft foundation. The seismic responses of the pier and the pile in hard foundation increase significantly with the hydrodynamic pressure considered, and the amplitude increases with the seismic intensity. Therefore, the effect of hydrodynamic pressure on deep-water bridge structures in hard foundation under strong earthquakes must be taken into consideration in seismic design of bridge structures. © 2024 Tsinghua University. All rights reserved.

引用

页码：176 / 184

页数：8

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