Large-scale shaking table model tests and numerical simulation for composite reinforcement aseismic measure of high earth rockfill dam

被引：0
作者：
Yang X. [1 ]
Yu T. [1 ]
Chen P. [2 ]
Yuan Z. [3 ]
机构：
[1] Power China Chengdu Engineering Corporation Limited, Chengdu
[2] Dowell Real Estate Development Corporation Limited, Shanghai
[3] Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology
来源：
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2022年 / 52卷 / 12期
关键词：
aseismic measure; composite reinforcement; high earth rockfill dam; numerical simulation; reinforcement mechanism; shaking table model test;
D O I：
10.1360/SST-2021-0369
中图分类号：
学科分类号：
摘要：
The aseismic safety of high earth rockfill dams is an important problem in engineering construction in the intensive earthquake area of West China. A composite reinforcement aseismic measure (CRAM) for high earth rockfill dams was developed. The CRAM’s effectiveness and reliability were validated using comparative model tests on a large-scale shaking table. Numerical simulation was used to examine the CRAM’s reinforcement mechanism. The results demonstrated that the CRAM had an inhibiting effect on the acceleration response; the CRAM can effectively inhibit the loosening and slipping of rockfill at the crest and reduce earthquake-induced permanent deformation. The numerical simulation also revealed that the shear strain amplitude and distribution were significantly altered. A slightly larger shear strain appeared at the front of the CRAM’s internal reinforcement materials, and the dam slope’s potential sliding surface was transformed from shallow sliding to deep sliding. As a result, the CRAM can improve the high earth rockfill dam’s seismic safety. The research results can provide a reference for the seismic design of the high rockfill dam in the intensive earthquake area. © 2022 Chinese Academy of Sciences. All rights reserved.
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页码：1839 / 1848
页数：9
相关论文
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