Aseismic performance of SRC frame-RC core tube hybrid structures

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (21) : 15-23.

WANG Bin1, LV Bin1, ZENG Lei2

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Abstract

To study aseismic performance of hybrid structures composed of steel beam-reinforcement concrete (SRC) frame-reinforcement concrete (RC) core tube, a 10-story SRC frame-RC core tube hybrid structure was designed according to the 8 (0.2g) earthquake fortification and the II kind sites.A model with scale of 1:5 for a SRC frame-RC core tube hybrid structure was constructed and the low cycle repeated loading tests were performed for this model to reveal its complex force-bearing behavior and failure process under earthquake.Based on test results, the hybrid structure’s failure characteristics, load-bearing capacity, deformation ability, hysteresis characteristics, energy-dissipating capacity, strength decay and stiffness degradation were analyzed.Finally, the analysis platform Opensees was used to nonlinearly simulate the hybrid structure’s aseismic performance under action of horizontal loading, and then its shear force distribution was calculated and analyzed.The results showed that the SRC frame-RC core tube hybrid structure has good aseismic performance; the study results can provide a technical support for aseismic design of this kind hybrid structures.

Key words

SRC frame / RC core tube / experimental study / seismic behavior? / numerical analysis

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WANG Bin1, LV Bin1, ZENG Lei2. Aseismic performance of SRC frame-RC core tube hybrid structures[J]. Journal of Vibration and Shock, 2019, 38(21): 15-23

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