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Computers and Concrete Volume 16, Number 4, October 2015 , pages 643-667 DOI: https://doi.org/10.12989/cac.2015.16.4.643 |
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Simulation study on dynamic response of precast frames made of recycled aggregate concrete |
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ThiLoan Pham, Jianzhuang Xiao and Tao Ding
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| Abstract | ||
| 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. As a result, 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. | ||
| Key Words | ||
| recycled aggregate concrete (RAC); precast frame; dynamic responses; dynamic nonlinear analysis; simulated result; tested result; interface | ||
| Address | ||
| ThiLoan Pham, Jianzhuang Xiao and Tao Ding: Department of Structural Engineering, Tongji University, Shanghai, 200092, PR China | ||