Journal of South China University of Technology(Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (12): 138-143,164.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Seismic Behaviors of SRC Beam Transfer Structure with Energy Dissipation Haunch Braces

Yang Chun1,2  Wu Yi3   He Ming-ji1  Zheng Jun-guang4  Zhang Chun-mei3   

  1. 1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;2. State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,Guangdong,China;3. School of Civil Engineering,Guangzhou University,Guangzhou 510006,Guangdong,China;4. Guangzhou City Construction and Development Design Institute Co.,Ltd.,Guangzhou 510620,Guangdong,China
  • Received:2011-07-08 Revised:2011-08-20 Online:2011-12-25 Published:2011-11-04
  • Contact: 吴轶(1973-) ，女，博士，教授，主要从事钢－混凝土组合结构与结构抗震减震研究． E-mail: wya2103@163．com E-mail:chyang@ scut.edu.cn
  • About author:杨春(1973-) ，男，博士，副教授，主要从事高层建筑结构与钢－混凝土组合结构研究．
  • Supported by:

    广东省自然科学基金资助项目( 8151009101000010，8451064101000286) ; 国家自然科学基金青年基金资助项目( 51108104) ; 亚热带建筑科学国家重点实验室资助项目( X2TJ-C709025z) ; 亚热带建筑科学国家重点实验室自主研究课题( 2011ZC25，2011ZC28) ; 亚热带建筑科学国家重点实验室开放课题( 2012KB06)

PDF

689

Abstract:

In order to avoid serious damage at the transfer storey of a transfer structure in earthquake,energy dissipation haunch braces ( EDHBs) were used to strengthen the transfer structure,and the SRC ( Steel-Reinforced Concrete) transfer frame structures with and without EDHBs were tested under cyclic loading. The results show that ( 1) reasonably-designed frame structure with EDHBs is effective in controlling the crack development of the transfer
beam; ( 2) with the setting of EDHBs,the initial stiffness of the transfer structure improves,and the bearing capacity,the ductility coefficient,the hysteretic energy dissipation and the equivalent viscosity coefficient respectively increase by 10.9%,77.1%,93.1% and 107%; and ( 3) EDHBs not only strengthen the damaged transfer storey but also improve the seismic behaviors of the transfer structure. In addition,by comparing the test results with those obtained from the proposed fine finite element model of the SRC transfer structure with EDHBs,it is found that the proposed model is accurate enough for the subsequent finite element analysis of the structure with EDHBs.

Key words: transfer structure, energy dissipation haunch brace, structural strengthening, seismic behaviors, finite element analysis

CLC Number: