RESEARCH ARTICLE


Cyclic Behavior of Steel Frames Infilled with Composite Panels: Experimental and Numerical



Hetao Hou*, 1, Canxing Qiu2, Zhonglong Lv 1, Yanfei Sun1
1 School of Civil Engineering, Shandong University, Jinan 250061, P.R.China
2 School of Civil Engineering, Hongkong Polytechnic University, Hongkong , P.R. China


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© 2013 Hou et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil Engineering, Shandong University, Jinan 250061, P.R.China; Tel: +86 13969036483; E-mail: houhetao@sdu.edu.cn


Abstract

For studying the hysteretic behavior of steel frames with sandwich composite (SC) panels, an experiment was implemented. A full scale one-bay and one storey specimen was tested under cyclic loading. Seismic behaviors were evaluated in line with the failure pattern and damage process of the specimen. Based on the experimental data, hysterics loops, skeleton curves, curves of strength degradation, and curves of stiffness degradation, ductility index and viscous damping coefficient were obtained. It is indicated that although the failures of panels mostly occurred around the embedded parts, SC panels exhibit a better integration than traditional walls. The connection between panel and steel frame is crucial to the corporation of the two parts. Finally, the suggestions for seismic design were put forward based on ductility index analysis and structures' energy dissipation. Moreover, FEA study was also carried out by using ABAQUS. A good agreeement was achieved between the experimental data and the numerical result in FEA. Finally, the useful information was got according to simplified caculation model. Only 7% of lateral stiffness is considered into calculation when panel is bolted to the frame at four corners of the frame.

Keywords: Composite panels, steel frames, cyclic loading tests, FEA, hysteretic behavior.