A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Design of an eccentrically buckling-restrained braced steel frame with web-bolted replaceable links
Abstract In this paper, an improved buckling-restrained brace is proposed to replace the traditional brace, and the links of the eccentrically braced steel frames are separated from the beams, forming a new structure system—namely, an eccentrically buckling-restrained braced frame with web-bolted replaceable links. As an independent component, the replaceable link can achieve the goal of confining the inelastic deformation to itself, while being easily replaced after intense earthquakes. Further, the improved buckling-restrained brace acts as a supplementary energy-dissipation member to ensure the energy-dissipation performance of the replaceable link. In this paper, ten web-bolted replaceable-link replacement tests were carried out with 1/3-scale eccentrically buckling-restrained braced steel frames under quasi-static cyclic loading. We analyze the seismic performance of the structure and evaluate the replaceability of the links. The results show that the number and spacing of the stiffeners and the length ratio of the links have a strong influence on the failure mode and energy-dissipation performance of the structure. In addition, we verified the feasibility of repair and replacement through replacement tests, showing that the replaceable link can act as a ‘structural fuse’
Highlights Quasi-static tests are conducted on eccentrically braced steel frames with web bolted replaceable links. The failure mode, energy dissipation, skeleton curve are analyzed, besides, the replaceability of the links are tested. The influences of the length ratio and stiffeners spacing of replaceable link on the seismic performance are investigated. The feasibility of design method in current design guidelines is evaluated.
Design of an eccentrically buckling-restrained braced steel frame with web-bolted replaceable links
Abstract In this paper, an improved buckling-restrained brace is proposed to replace the traditional brace, and the links of the eccentrically braced steel frames are separated from the beams, forming a new structure system—namely, an eccentrically buckling-restrained braced frame with web-bolted replaceable links. As an independent component, the replaceable link can achieve the goal of confining the inelastic deformation to itself, while being easily replaced after intense earthquakes. Further, the improved buckling-restrained brace acts as a supplementary energy-dissipation member to ensure the energy-dissipation performance of the replaceable link. In this paper, ten web-bolted replaceable-link replacement tests were carried out with 1/3-scale eccentrically buckling-restrained braced steel frames under quasi-static cyclic loading. We analyze the seismic performance of the structure and evaluate the replaceability of the links. The results show that the number and spacing of the stiffeners and the length ratio of the links have a strong influence on the failure mode and energy-dissipation performance of the structure. In addition, we verified the feasibility of repair and replacement through replacement tests, showing that the replaceable link can act as a ‘structural fuse’
Highlights Quasi-static tests are conducted on eccentrically braced steel frames with web bolted replaceable links. The failure mode, energy dissipation, skeleton curve are analyzed, besides, the replaceability of the links are tested. The influences of the length ratio and stiffeners spacing of replaceable link on the seismic performance are investigated. The feasibility of design method in current design guidelines is evaluated.
Design of an eccentrically buckling-restrained braced steel frame with web-bolted replaceable links
Yin, Zhanzhong (author) / Yang, Bo (author) / Zhang, Xiaobo (author)
2022-03-20
Article (Journal)
Electronic Resource
English
Cast Steel Replaceable Modular Links for Eccentrically Braced Frames
| British Library Conference Proceedings | 2017