首页|Aseismic performances of constrained damping lining structures made of rubber-sand-concrete

Aseismic performances of constrained damping lining structures made of rubber-sand-concrete

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Flexible damping technology considering aseismic materials and aseismic structures seems be a good solution for engineering structures.In this study,a constrained damping structure for underground tunnel lining,using a rubber-sand-concrete(RSC)as the aseismic material,is proposed.The aseismic performances of constrained damping structure were investigated by a series of hammer impact tests.The damping layer thickness and shape effects on the aseismic performance such as effective duration and acceleration amplitude of time-domain analysis,composite loss factor and damping ratio of the transfer function analysis,and total vibration level of octave spectrum analysis were discussed.The hammer impact tests revealed that the relationship between the aseismic performance and damping layer thickness was not linear,and that the hollow damping layer had a better aseismic performance than the flat damping layer one.The aseismic performances of constrained damping structure under different seismicity magnitudes and geological conditions were investigated.The effects of the peak ground acceleration(PGA)and tunnel overburden depth on the aseismic performances such as the maximum principal stress and equivalent plastic strain(PEEQ)were discussed.The numerical results show the constrained damping structure proposed in this paper has a good aseismic performance,with PGA in the range(0.2-1.2)g and tunnel overburden depth in the range of 0-300 m.

Constrained damping structureAseismic performanceHammer impact testsDamping layerPeak ground accelerationOverburden depth

Xiancheng Mei、Qian Sheng、Jian Chen、Zhen Cui、Jianhe Li、Chuanqi Li、Daniel Dias

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State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,430071,China

University of Chinese Academy of Sciences,Beijing,100049,China

Key Laboratory of Water Grid Project and Regulation of Ministry of Water Resources,Changjiang Institute of Survey,Planning,Design and Research,Wuhan,430010,China

Laboratory 3SR,CNRS UMR 5521,Grenoble Alpes University,Grenoble,38000,France

School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei,23009,China

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国家自然科学基金CRSRI Open Research Programproject of Key Laboratory of Water Grid Project and Regulation of Ministry of Water ResourcesYouth Innovation Promotion Association CAS

52079133CKWV2019746/KYQTKS0034W23291

2024

10.1016/j.jrmge.2023.08.003

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(5)
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