Journal of Lanzhou University of Technology ›› 2021, Vol. 47 ›› Issue (4): 116-124.

• Architectural Sciences • Previous Articles     Next Articles

Comparative analysis of seismic response of smart frame-rocking wall structure with dual energy dissipation elements

LUO Wei-gang1,2, LIU Ji-bin1, ZHANG Yang1, GUO Yi-ling1 , QI Pan1, SONG Jiang-peng1   

  1. 1. College of Civil Engineering, Lanzhou Univ. ofTech., Lanzhou 730050, China;
    2. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2019-01-27 Online:2021-08-01 Published:2021-09-07

Abstract: Directed against the issues of frame-shear wall structure floor diaphragm were damaged or coupling beam failed, and the plastic hinges appeared at the bottom of shear wall under strong earthquake, a smart frame-shear wall dual structure system with BRB passive energy dissipation in between the frame and shear-wall was developed by the author's research group, and the shear wall is set as the rocking shear wall with metal damper at the bottom. A new frame-rocking shear wall structure system with dual energy dissipation elements is set up. In this paper, a six-story reinforced concrete frame-shear wall model are established using ABAQUS as prototype, the traditional frame-shear wall structure, the smart frame-shear wall dual structure, the frame-rocking wall structure with BRB in between rocking wall and frame, and the frame-rocking shear wall structure system with dual energy dissipation elements are compared. To obtain dynamic response of each structure, the non-linear dynamic time-history analysis is conducted. Results show that when the BRB yield strength ratio is 0.1~1, the seismic responses of the frame-rocking shear wall structure with dual energy dissipation elements are less than that of traditional structure. The frame inter-storey drift is also effectively controlled. It is further explained that, under the appropriate parameter value of the BRB and MD, the seismic response of the structure with dual energy dissipation elements is smaller than that of the single energy dissipation element.

Key words: smart frame-rocking wall structure, dual energy dissipation element, seismic response, buckling restrained brace(BRB), metal damper(MD)

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