Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-centering rocking dual-core braced frames with buckling-restrained fuses
Abstract This paper proposes a self-centering rocking dual-core braced frame system with buckling-restrained fuses (SC-RDC-BRF). While providing low-damage design and improved seismic resilience, the proposed system prevents soft-story failure in steel braced frames. The use of buckling-restrained fuses and post-tensioned (PT) cables in the SC-RDC-BRF system enables the structure to dissipate energy and exhibit self-centering behavior effectively. The proposed rocking system does not require column uplifting and thus preventing demand amplifications on the frame members. The paper also develops a design method for SC-RDC-BRF systems. The design method is based on a preliminary design with a rigid core assumption and a modified response spectrum analysis for the design of the rocking cores (i.e., beams, columns, braces, and ties). Nonlinear static and dynamic analyses are also performed on three-, six-, and nine-story frames to verify and illustrate the design method. Results from nonlinear response history analyses confirm the adequacy of the proposed design method and expected performance of SC-RDC-BRF systems.
Highlights A new self-centering braced frame with rocking dual cores (SC-RDC-BRF) is proposed. A two-stage design method is proposed for the SC-RDC-BRF. The design method is verified and illustrated for archetype frames. Nonlinear static and dynamic analyses are performed. The satisfactory performance of SC-RDC-BRF systems is confirmed.
Self-centering rocking dual-core braced frames with buckling-restrained fuses
Abstract This paper proposes a self-centering rocking dual-core braced frame system with buckling-restrained fuses (SC-RDC-BRF). While providing low-damage design and improved seismic resilience, the proposed system prevents soft-story failure in steel braced frames. The use of buckling-restrained fuses and post-tensioned (PT) cables in the SC-RDC-BRF system enables the structure to dissipate energy and exhibit self-centering behavior effectively. The proposed rocking system does not require column uplifting and thus preventing demand amplifications on the frame members. The paper also develops a design method for SC-RDC-BRF systems. The design method is based on a preliminary design with a rigid core assumption and a modified response spectrum analysis for the design of the rocking cores (i.e., beams, columns, braces, and ties). Nonlinear static and dynamic analyses are also performed on three-, six-, and nine-story frames to verify and illustrate the design method. Results from nonlinear response history analyses confirm the adequacy of the proposed design method and expected performance of SC-RDC-BRF systems.
Highlights A new self-centering braced frame with rocking dual cores (SC-RDC-BRF) is proposed. A two-stage design method is proposed for the SC-RDC-BRF. The design method is verified and illustrated for archetype frames. Nonlinear static and dynamic analyses are performed. The satisfactory performance of SC-RDC-BRF systems is confirmed.
Self-centering rocking dual-core braced frames with buckling-restrained fuses
Majumerd, Mohammad Javad Ebrahimi (Autor:in) / Dehcheshmeh, Esmaeil Mohammadi (Autor:in) / Broujerdian, Vahid (Autor:in) / Moradi, Saber (Autor:in)
03.05.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Seismic Performance of Nine-Story Self-centering Buckling-Restrained Braced Frames
| Springer Verlag | 2019
Buckling-Restrained Braced Frames
| British Library Conference Proceedings | 2008