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Simulation study on dynamic response of precast frames made of recycled aggregate concrete

  • Pham, ThiLoan (Department of Structural Engineering, Tongji University) ;
  • Xiao, Jianzhuang (Department of Structural Engineering, Tongji University) ;
  • Ding, Tao (Department of Structural Engineering, Tongji University)
  • 투고 : 2015.05.22
  • 심사 : 2015.10.28
  • 발행 : 2015.10.25

초록

3-dimentional precast recycled aggregate concrete (RAC) finite element models were developed by means of the platform OpenSees to implement sophisticated nonlinear model subjected to seismic loads. Efforts were devoted to the dynamic responses (including dynamic characteristics, acceleration amplifications, displacements, story drifts) and capacity curve. In addition, this study extended the prediction on dynamic response of precast RAC model by parametric study of material properties that represent the replacement percentage of recycled coarse aggregate (RCA). Principles and assumptions that represent characteristics of precast structure and influence of the interface between head of column and cast-in-place (CIP) joint on the stiffness of the joints was put forward and validated by test results. The comparison between simulated and tested results of the precast RAC frame shows a good correlation with most of the relative errors about 25% in general. Therefore, the adopted assumptions and the platform OpenSees are a viable approach to simulate the dynamic response of precast frames made of RAC.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. Mechanical behavior of concrete comprising successively recycled concrete aggregates vol.5, pp.4, 2015, https://doi.org/10.12989/acc.2017.5.4.303
  2. The Dynamic Mechanical Properties for Recycled Aggregate Concrete under Tensile-Compressive States vol.24, pp.5, 2015, https://doi.org/10.1007/s12205-020-2307-0