Aseismic performance improvement of base-isolated liquid storage tank based on negative stiffness amplifying damper

被引：0

作者：

Tang, Zian ^{[1
]}

Meng, Shuo ^{[1
]}

Luo, Hao ^{[1
,2
]}

Weng, Shun ^{[1
,2
]}

Zhu, Hongping ^{[1
,2
]}

机构：

[1] School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan

[2] Hubei Provincial Key Lab of Control Structure, Huazhong University of Science and Technology, Wuhan

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2025年 / 44卷 / 11期

关键词：

base-isolation system; damper optimization design; extended fixed-point theory; liquid storage tank; long-period ground motion; negative stiffness damper;

D O I：

10.13465/j.cnki.jvs.2025.11.025

中图分类号：

学科分类号：

摘要：

To improve seismic performances of base-isolated liquid storage tanks under strong seismic-induced ground motions, a combined isolation method based on negative stiffness amplifying damper was proposed, and the analytical optimal formulas of negative stiffness amplifying damper based on the extended fixed-point theory were derived. By establishing a simplified lumped mass model of liquid storage tank with the first three sloshing modes, seismic responses of differently controlled liquid storage tanks under conventional short-period and extreme long-period ground motions were obtained numerically, and performances of the proposed method and traditional method were compared. The results showed that compared with the traditional method, the proposed method is more effective in suppressing sloshing wave height, bottom shear force, and overturning moment of liquid storage tank under short-period ground motions, with improvements of 45%, 16%, and 43%, respectively. When subject to long-period ground motions, the proposed method is also more effective than the traditional method in suppressing base displacement, sloshing wave height, bottom shear force, and overturning moment, with improvements of 10%, 37%, 31%, and 37%, respectively. © 2025 Chinese Vibration Engineering Society. All rights reserved.

引用

页码：225 / 233

页数：8

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