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Experimental study on full-scale steel beam-to-column moment connections

Qian Jiaru (钱稼茹)1, Yu Haiqun (余海群)2, Yan Feng (颜 锋)1, Dong Hai (董 海)2, Li Jianhua (李建华)2 and Liu Yueming (刘月明)2

  1. Department of Civil Engineering, Key Laboratory for Structural Engineering and Vibration of Ministry of Education, Tsinghua University, Beijing 100084, China
  2. Beijing Urban Engineering Architecture Design & Research Institute, Beijing 100037, China

Abstract: Ten full-scale steel beam-to-column moment connections used in moment-resisting frames (MRFs) were tested to study the failure process, failure mode, strength and plastic rotation capacity. The specimens include one traditional welded flange-bolted web connection, one traditional fully welded connection, four beam flange strengthened connections, three beam flange weakened connections, and one through-diaphragm connection. The test results show that the connections with flange cover plates or with partly cut beam flanges satisfy the beam plastic rotation demand for ductile MRFs. From the measured stress profiles along the beam flange and beam web depth, the mechanics of brittle fracture at the end of the beam is discussed. Design recommendations for steel beam-to-column moment connections are proposed.

Keywords: steel beam-to-column moment connection; ductility; plastic rotational; experiment study

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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.