To realize seismic-resilient reinforced concrete(RC)moment-resisting frame structures,a novel selfcentering RC column with a rubber layer placed at the bottom(SRRC column)is proposed herein.For the column,the longitud...To realize seismic-resilient reinforced concrete(RC)moment-resisting frame structures,a novel selfcentering RC column with a rubber layer placed at the bottom(SRRC column)is proposed herein.For the column,the longitudinal reinforcement dissipates seismic energy,the rubber layer allows the rocking of the column,and the unbonded prestressed tendon enables self-centering capacity.A refined finite element model of the SRRC column is developed,the effectiveness of which is validated based on experimental results.Results show that the SRRC column exhibits stable energy dissipation capacity and no strength degradation;additionally,it can significantly reduce permanent residual deformation and mitigate damage to concrete.Extensive parametric studies pertaining to SRRC columns have been conducted to investigate the critical factors affecting their seismic performance.展开更多
基金the National Key R&D Program of China(No.2022YFC3803003)the Fundamental Research Funds for the Central Universities.
文摘To realize seismic-resilient reinforced concrete(RC)moment-resisting frame structures,a novel selfcentering RC column with a rubber layer placed at the bottom(SRRC column)is proposed herein.For the column,the longitudinal reinforcement dissipates seismic energy,the rubber layer allows the rocking of the column,and the unbonded prestressed tendon enables self-centering capacity.A refined finite element model of the SRRC column is developed,the effectiveness of which is validated based on experimental results.Results show that the SRRC column exhibits stable energy dissipation capacity and no strength degradation;additionally,it can significantly reduce permanent residual deformation and mitigate damage to concrete.Extensive parametric studies pertaining to SRRC columns have been conducted to investigate the critical factors affecting their seismic performance.
