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Nonlinear analysis and test validation on seismic performance of a recycled aggregate concrete space frame
Author(s) -
Xiao J. Z.,
Wang C. Q.,
Pham T. L.,
Yang Z. J.,
Ding T.
Publication year - 2014
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.1148
Subject(s) - opensees , earthquake shaking table , structural engineering , frame (networking) , aggregate (composite) , peak ground acceleration , acceleration , nonlinear system , incremental dynamic analysis , earthquake simulation , vibration , space frame , geology , finite element method , seismic analysis , geotechnical engineering , computer science , engineering , ground motion , materials science , acoustics , physics , telecommunications , classical mechanics , quantum mechanics , composite material
SUMMARY Three‐dimensional recycled aggregate concrete (RAC) nonlinear finite element models are developed by OpenSees software to investigate the seismic responses of a 1/4‐scaled six‐story, two‐bay and two‐span RAC space frame, which has been tested on a shaking table subjected to various earthquake scenarios. The simulated natural frequencies and vibration modal shapes, the acceleration amplification factors, the maximum story displacements and the inter‐story drifts are carefully validated by and compared with the test data with overall good agreement. The simulated seismic responses of the RAC frame and the natural aggregate concrete (NAC) frame are also compared. The aseismic capacity of the NAC frame structure is better than that of the RAC frame structure in the early stage, and they behave almost the same in the severe stage under strong earthquake excitations. Both tested and simulated results indicate that not only the peak ground acceleration and duration and frequency of ground motion but also concrete material properties play a prominent role in the overall seismic performances of frame structures. Copyright © 2014 John Wiley & Sons, Ltd.