Earthquakes and Structures

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Component deformation-based seismic design method for RC structure and engineering application

  • Han, Xiaolei (School of Civil and Transportation Engineering, South China University of Technology) ;
  • Huang, Difang (School of Civil and Transportation Engineering, South China University of Technology) ;
  • Ji, Jing (School of Civil and Transportation Engineering, South China University of Technology) ;
  • Lin, Jinyue (School of Civil and Transportation Engineering, South China University of Technology)
  • Received : 2018.11.15
  • Accepted : 2019.03.28
  • Published : 2019.05.25
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Abstract

Seismic design method based on bearing capacity has been widely adopted in building codes around the world, however, damage and collapse state of structure under strong earthquake can not be reflected accurately. This paper aims to present a deformation-based seismic design method based on the research of RC component deformation index limit, which combines with the feature of Chinese building codes. In the proposed method, building performance is divided into five levels and components are classified into three types according to their importance. Five specific design approaches, namely, "Elastic Design", "Unyielding Design", "Limit Design", "Minimum Section Design" and "Deformation Assessment", are defined and used in different scenarios to prove whether the seismic performance objectives are attained. For the components which exhibit ductile failure, deformation of components under strong earthquake are obtained quantitatively in order to identify the damage state of the components. For the components which present brittle shear failure, their performance is guaranteed by bearing capacity. As a case study, seismic design of an extremely irregular twin-tower high rise building was carried out according to the proposed method. The results evidenced that the damage and anti-collapse ability of structure were estimated and controlled by both deformation and bearing capacity.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of Guangdong Province, NSFC (National Natural Science Foundation of China)

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