Earthquakes and Structures
Volume 15, Number 2, 2018, pages 133-144
DOI: 10.12989/eas.2018.15.2.133
Effect of the limiting-device type on the dynamic responses of sliding isolation in a CRLSS
Xuansheng Cheng , Wei Jing , Xinlei Li , Changde Lu
Abstract
To study the effectiveness of sliding isolation in a CRLSS (concrete rectangular liquid-storage structure) and develop a reasonable limiting-device method, dynamic responses of non-isolation, sliding isolation with spring limiting-devices and sliding isolation with steel bar limiting-devices are comparatively studied by shaking table test. The seismic response reduction advantage of sliding isolation for concrete liquid-storage structures is discussed, and the effect of the limiting-device type on system dynamic responses is analyzed. The results show that the dynamic responses of sliding isolation CRLSS with steel bar-limiting devices are significantly smaller than that of sliding isolation CRLSS with spring-limiting devices. The structure acceleration and liquid sloshing wave height are greatly influenced by spring-limiting devices. The acceleration of the structure in this case is close to or greater than that of a non-isolated structure. Liquid sloshing shows stronger nonlinear characteristics. On the other hand, sliding isolation with steel bar-limiting devices has a good control effect on the structural dynamic response and the liquid sloshing height simultaneously. Thus, a limiting device is an important factor affecting the seismic response reduction effect of sliding isolation. To take full advantage of sliding isolation in a concrete liquid-storage structure, a reasonable design of the limiting device is particularly important.
Key Words
sliding isolation; concrete rectangular liquid-storage structure; limiting device; shaking table test; dynamic response
Address
- Xuansheng Cheng, Wei Jing — Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, PR China; Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou, 730050, PR China
- Xinlei Li — Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, PR China
- Changde Lu — The Second Engineering Co., LTD, China Railway 21 Bureau Group Co., LTD, Lanzhou, 730070, PR China
PDF Viewer
Preview is limited to the first 3 pages. Sign in to access the full PDF.
Loading…
