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Nonlinear pushover analysis of infilled concrete frames

Chao Hsun Huang (黃昭勳)1 Yungting Alex Tuan (段永定)2 and Ruo Yun Hsu (許若芸)3

  1. Department of Civil Engineering, Taipei University of Technology, Chinese Taipei
  2. Department of Construction, Tamkang University, Chinese Taipei
  3. Tien Shiang Structural and Civil Association, Chinese Taipei

Abstract: Six reinforced concrete frames with or without masonry infills were constructed and tested under horizontal cyclic loads. All six frames had identical details in which the transverse reinforcement in columns was provided by rectangular hoops that did not meet current ACI specifications for ductile frames. For comparison purposes, the columns in three of these frames were jacketed by carbon-fiber-reinforced-polymer (CFRP) sheets to avoid possible shear failure. A nonlinear pushover analysis, in which the force-deformation relationships of individual elements were developed based on ACI 318, FEMA 356, and Chenís model, was carried out for these frames and compared to test results. Both the failure mechanisms and impact of infills on the behaviors of these frames were examined in the study. Conclusions from the present analysis provide structural engineers with valuable information for evaluation and design of infilled concrete frame building structures.

Keywords: pushover analysis; FEMA 356; infilled concrete frames; infill masonry panels; fiber-reinforced-polymer

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Copyright© 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.