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Volume 26 Issue 1
Jan.  2013
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Article Contents
Journal of Southwest Jiaotong University  > 2013  >  26(1): 75-80.
SHAO Yongbo, WANG Wenjie, CHEN Ying. Experimental Study on Hysteretic Behavior of Square Tubular T-Joints Reinforced with Collar Plate[J]. Journal of Southwest Jiaotong University, 2013, 26(1): 75-80. doi: 10.3969/j.issn.0258-2724.2013.01.012
Citation: SHAO Yongbo, WANG Wenjie, CHEN Ying. Experimental Study on Hysteretic Behavior of Square Tubular T-Joints Reinforced with Collar Plate[J]. Journal of Southwest Jiaotong University, 2013, 26(1): 75-80. doi: 10.3969/j.issn.0258-2724.2013.01.012
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Experimental Study on Hysteretic Behavior of Square Tubular T-Joints Reinforced with Collar Plate

doi: 10.3969/j.issn.0258-2724.2013.01.012
  • Received Date: 29 Mar 2011
  • Publish Date: 25 Feb 2013
    Abstract
  • To assess the anti-seismic behavior of reinforced welded tubular joints with circular hollow section, the hysteretic performance of square tubular T-joints with collar plate reinforcement was studied experimentally. Hysteretic tests were carried out on 2 square tubular T-joints with collar plate reinforcement and on 2 corresponding un-reinforced specimens under quasi-static cyclic loading. The experimental results show that the failure position is transformed from the weld toe along the brace/chord intersection of the un-reinforced specimens to the weld connection between the collar plate and the chord surface of the T-joints with collar plate reinforcement. The hysteretic loops of the reinforced T-joints are much plumper and show a better anti-seismic behavior. The ductility ratio of the reinforced T-joints is improved significantly compared to that of the un-reinforced ones. The values of the ductility ratio are increased by 34% in compression stage and 33% in tension stage for one group of specimens, and increased by 100%in compression stage and 145% in tension stage for another group of specimens.

     

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