Global seismic performance of a new precast CFST column to RC beam braced frame: Shake table test and numerical study



Xu, S.Y.;Li, Z.L.;Liu, H.J.

  • 투고 : 2015.12.09
  • 심사 : 2016.06.12
  • 발행 : 2016.07.20


A new type of precast CFST column to RC beam braced frame is proposed in this paper. A series of shake table tests were conducted to excite a one-third scale six-story model for investigating the global seismic performance of this type of structure against earthquake actions. Particular emphasis was given to its dynamic property, global seismic responses and failure path. Correspondingly, a numerical model built on the basis of fiber-beam-element model, multi-layer shell model and element-deactivation method was developed to simulate the seismic performance of the prototype structure. Numerical results were compared with the measured values from shake table tests to verify the validity and reliability of the numerical model. The results demonstrated that the proposed novel precast CFST column to RC beam braced frame performs excellently under strong earthquake excitations; the "strong CFST column-weak RC beam" and "strong connection-weak member" anti-seismic design principles can be easily achieved; the maximum deflections of precast CFSTC-RCB braced frame satisfied the deflection limitations proposed in national code; the numerical model can properly simulate the dynamic property and responses of the precast CFSTC-RCB braced frame that are highly concerned in engineering practice.


precast building;concrete filled steel tubular (CFST) column;reinforced concrete (RC) beam;seismic performance;nonlinear FEM analysis


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연구 과제 주관 기관 : CCRDI