中文摘要：

带接触环双钢管约束屈曲支撑是一种位移相关型消能阻尼元件,其力学性能与外套管约束刚度、两管的间隙等多种因素相关。通过对带接触环双钢管约束屈曲支撑进行了试验研究,探讨其滞回特性,以及滞回特性与外套管刚度、间隙之间的关系,为带接触环双钢管约束屈曲支撑的工程应用提供了参考。掌握构件的强度和耗能特性,为约束屈曲支撑在结构中的应用提供有用的参考意见。在外套管的约束作用下支撑在受拉和受压时可屈服而不屈曲,在弱震作用下就可能提早屈服耗能,保护主体结构不受破坏,在强震作用大量吸收能量,提高结构安全度。

英文摘要：

The double-tube BRBs with contact rings are displacement-correlated dampings with effective energy dissipation.Its mechanical property is related with many factors,such as the stiffness of the outer-tube,the clearance between inner-tube and outer-tuber.Through the study on the Double-tube BRBs,the paper probes into the hysteretic behavior of BRBs and its relationship with the stiffness of outer-tube and the clearance.In this way,the paper offers useful suggestions about the application of BRBs.With the restraining function,the BRBs yield without buckling under the action of both compression and tension.It can yield and dissipate energy under weak earthquake so as to protect the main structure from being damaged,and it can also absorb considerable energy under strong earthquake so that the safety of the structure is improved.