Innovative seismic retrofitting strategy of added stories isolation system

doi:10.1007/s11709-013-0195-9

Frontiers of Structural and Civil Engineering

2013, Vol. 7

Issue (1): 13-23 https://doi.org/10.1007/s11709-013-0195-9

RESEARCH ARTICLE

本期目录

Innovative seismic retrofitting strategy of added stories isolation system

Min-Ho CHEY¹(

), J. Geoffrey CHASE², John B. MANDER³, Athol J. CARR⁴

1. School of Architecture & Art, Yanbian University of Science & Technology, Yanji 133000, China; 2. Department of Mechanical Engineering, University of Canterbury, Christchurch 8140, New Zealand; 3. Zachry Department of Civil Engineering, Texas A&M University, Texas 77843, USA; 4. Department of Civil & Natural Resources Engineering, University of Canterbury, Christchurch 8140, New Zealand

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Abstract：

The seismic performance of “added stories isolation” (ASI) systems are investigated for 12-story moment resisting frames. The newly added and isolated upper stories on the top of the existing structure are rolled to act as a large tuned mass damper (TMD) to overcome the limitation of the size of tuned mass, resulting to “12+2” and “12+4” stories building configurations. The isolation layer, as a core design strategy, is optimally designed based on optimal TMD design principle, entailing the insertion of passive flexible laminated rubber bearings to segregate two or four upper stories from a conventionally constructed lower superstructure system. Statistical performance metrics are presented for 30 earthquake records from the 3 suites of the SAC project. Time history analyses are used to compute various response performances and reduction factors across a wide range of seismic hazard intensities. Results show that ASI systems can effectively manage seismic response for multi-degree-of freedom (MDOF) systems across a broader range of ground motions without requiring burdensome extra mass. Specific results include the identification of differences in the number of added story by which the suggested isolation systems remove energy.

Key words： added stories seismic isolation tuned mass damper parametric optimization statistical method

收稿日期: 2012-12-15 出版日期: 2013-03-05

Corresponding Author(s): CHEY Min-Ho,Email:hnhdad@daum.net

引用本文:

. Innovative seismic retrofitting strategy of added stories isolation system[J]. Frontiers of Structural and Civil Engineering, 2013, 7(1): 13-23.
Min-Ho CHEY, J. Geoffrey CHASE, John B. MANDER, Athol J. CARR. Innovative seismic retrofitting strategy of added stories isolation system. Front Struc Civil Eng, 2013, 7(1): 13-23.

链接本文:

https://academic.hep.com.cn/fsce/CN/10.1007/s11709-013-0195-9
https://academic.hep.com.cn/fsce/CN/Y2013/V7/I1/13

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