Abstract
A model for evaluating structural damage of recycled aggregate concrete filled steel tube (RCFST) columns under seismic effects is proposed in this paper. The proposed model takes the lateral deformation and the effect of repeated cyclic loading into account. Available test results were collected and utilized to calibrate the parameters of the proposed model. A seismic test for six RCFST columns was also performed to validate the proposed damage assessment model. The main test parameters were the recycled coarse aggregate (RCA) replacement percentage and the bond-slip property. The test results indicated that the seismic performance of the RCFST member depends on the RCA contents and their damage index increases as the RCA replacement percentage increases. It is also indicated that the damage degree of RCFST changes with the variation of the RCA replacement percentage. Finally, comparisons between the RCA contents, lateral deformation ratio and damage degree were implemented. It is suggested that an improvement procedure should be implemented in order to compensate for the performance difference between the RCFST and normal concrete filled steel tubes (CFST).
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Supported by: the National Natural Science Foundation of China under Grant Nos. 51408346 and 51438007, and the Shanghai Science and Technique Committee under Grant No. 14231201300
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Huang, Y., Xiao, J. & Shen, L. Damage assessment for seismic response of recycled concrete filled steel tube columns. Earthq. Eng. Eng. Vib. 15, 607–616 (2016). https://doi.org/10.1007/s11803-016-0347-8
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DOI: https://doi.org/10.1007/s11803-016-0347-8