| Title: | MODELING AND SEISMIC BEHAVIOR OF CONCRETE-FILLED RECTANGULAR STEEL TUBULAR COLUMNS IN TALL BUILDINGS
This work is sponsored by National Natural Science Foundation of China, Grant No. 50025821, 50321803. |
| DOI No: | 10.1142/9789812701480_0031 |
| Source: | TALL BUILDINGS (pp 187-193)
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| Author(s): | XUEPING LI
Architectural Design and Research Institute, Tongji University, 1239 Siping Road, Shanghai 200092, China
XILIN LU
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
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| Abstract: | Based on experimental investigation, the interface bond-slip model of CFRT was put forward, and the hysteretic model of in-filled concrete and steel considering Bauschinger Effect was also built. With fiber section model, the analytical model for CFRT columns was constructed. Analysis program for CFRT columns considering interface slip was accomplished. Full range analysis of the CFRT columns was conducted. The simulation results were compared with test records at the levels of load-displacement and load-strain. To investigate the mechanism of bond-slip interface, simulated stress-strain of fibers was also presented. The effect of the interface bond strength on the hysteretic behavior of CFRT columns was evaluated. At the end, design suggestions were presented for structural application of CFRT columns in high-rise buildings. |
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