Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental investigation of the hysteretic performance of self-centering buckling-restrained braces with friction fuses
Highlights The friction fuse will increase the deformation capacity of the SC-BRB. The performance of a reasonably designed friction fuse is stable. Activation of the friction fuse avoids the fracture of the BFRP tendons. The friction fuse can reduce the collapse probability of the structure. The friction fuse can reduce the residual structural deformation.
Abstract The dual-tube self-centering buckling-restrained brace (SC-BRB) is a new bracing system with self-centering and energy dissipation capacity. The current dual-tube SC-BRB is limited by the elastic elongation of the tendons. When the lateral deformation of existing dual-tube SC-BRBs exceeds 2.6% of a typical building story height, the tendons will be fractured, and this fracture will lead to a sudden drop of the bearing capacity of the brace and loss of the self-centering capacity. In this paper, an SC-BRB with a friction fuse (SC-BRB-FS) is proposed by introducing a friction device at the end of the brace to increase the deformation capacity of the dual-tube SC-BRB. At the same time, two bracing specimens are built for a quasi-static test. Activation of the friction fuse can efficiently increase the deformation capacity of the brace. When the displacement reaches 36 mm (corresponding to a story drift of 4%), the tendons are still not damaged. The nonlinear dynamic time-history analysis of the structure shows that compared with the fracture of tendons, the use of a friction fuse not only restrains the soft-story effect and reduces the collapse probability of the structure but also reduces the residual deformation of the structure.
Experimental investigation of the hysteretic performance of self-centering buckling-restrained braces with friction fuses
Highlights The friction fuse will increase the deformation capacity of the SC-BRB. The performance of a reasonably designed friction fuse is stable. Activation of the friction fuse avoids the fracture of the BFRP tendons. The friction fuse can reduce the collapse probability of the structure. The friction fuse can reduce the residual structural deformation.
Abstract The dual-tube self-centering buckling-restrained brace (SC-BRB) is a new bracing system with self-centering and energy dissipation capacity. The current dual-tube SC-BRB is limited by the elastic elongation of the tendons. When the lateral deformation of existing dual-tube SC-BRBs exceeds 2.6% of a typical building story height, the tendons will be fractured, and this fracture will lead to a sudden drop of the bearing capacity of the brace and loss of the self-centering capacity. In this paper, an SC-BRB with a friction fuse (SC-BRB-FS) is proposed by introducing a friction device at the end of the brace to increase the deformation capacity of the dual-tube SC-BRB. At the same time, two bracing specimens are built for a quasi-static test. Activation of the friction fuse can efficiently increase the deformation capacity of the brace. When the displacement reaches 36 mm (corresponding to a story drift of 4%), the tendons are still not damaged. The nonlinear dynamic time-history analysis of the structure shows that compared with the fracture of tendons, the use of a friction fuse not only restrains the soft-story effect and reduces the collapse probability of the structure but also reduces the residual deformation of the structure.
Experimental investigation of the hysteretic performance of self-centering buckling-restrained braces with friction fuses
Xie, Qin (Autor:in) / Zhou, Zhen (Autor:in) / Meng, Shao-Ping (Autor:in)
Engineering Structures ; 203
26.10.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Self-Centering Buckling-Restrained Braces
| Tema Archiv | 2013
Self-Centering Buckling-Restrained Braces
| British Library Conference Proceedings | 2013