Vol. 9, No. 3, pp. 190-204 (2013)
HYSTERETIC BEHAVIOR OF SHEAR PANEL DAMPERS UNDER HIGH AXIAL COMPRESSION LOADING
Zhiyi Chen 1,*,2,3, Guoqiang Bian 3 and Yu Huang 3,4
1 Associate Professor, Key Laboratory of Geotechnical and Underground Engineering of
the Ministry of Education, Tongji University, Shanghai 200092, China
2 State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection,
Chengdu University of Technology, Chengdu 610059, China
3 Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
4 Professor, Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. )
Received: 30 October 2011; Revised: 31 March 2012; Accepted: 12 April 2012
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ABSTRACT
This paper aims to investigate the hysteretic behavior of shear panel dampers (SPDs) made of mild steel Q235B incorporated in underground structures against earthquakes. Five SPDs were given cyclic shear loading tests, with the axial compression ratio and the web slenderness as test variables. The shear bearing capacity and the ductility decreased continually with increasing axial compression ratio. When the axial compression ratio exceeded 0.6, the hysteretic behavior was seriously affected. Cumulative energy dissipated by the test specimen with an axial compression ratio of 0.7 was only half that of the one with a ratio of 0.3. The control group (the SPD without the web) was set to estimate the horizontal resistance of upper and lower flanges that were mostly induced by flexure. The contribution of two flanges in resisting the shear deformation was about 15%.
KEYWORDS
Shear panel dampers, Axial compression ratio, Hysteretic behavior, Energy dissipation, Underground structures
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