Designing irregular frame in high intensity seismic zone frequently have to meet some difficulties,such as excessive demands of interstory drift,shear-pressure ratio and the cross-sectional dimensions.By comparing several energy dissipation schemes,the combined of buckling-restrained braces(BRB)and viscous fluid dampers(VFD)is selected,achieving success in Engineering.The structure response based on this guidance all meets the requirements of codes and exhibits considerable energy dissipation capabilities.Additionally,the performance-based design of energy dissipating substructures is developed by considering several performance objectives to investigate energy dissipation of devices,shock absorption efficiency and substructure damage.It is proposed that designing energy dissipation substructure should adhere to the concept of"high ductility and medium bearing capacity",which indicates the contribution of substructures as sacrificial components.Certain damage in substructures notwithstanding,it is positively correlated with the shock absorption efficiency within a certain range.However,overestimating the importance of substructures causes to the decrease of energy dissipation and leaves surrounding components at risk of damage.
关键词
混合消能减震/屈曲约束支撑/黏滞阻尼器/消能子结构/抗震性能目标
Key words
hybrid energy dissipation and seismic absorption/buckling-restrained brace/viscous fluid damper/energy dissipation substructure/seismic performance objectives
维普
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