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A platform for research: civil engineering, architecture and urbanism
Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration
https://orcid.org/0000-0003-3337-1011
https://orcid.org/0000-0001-6145-2818
Highlights A new BRBF system for RC structures is examined to address brace connection issues. Experimental tests are conducted on BRB connections in the new system. Nonlinearity of brace connection has marginal effects on global seismic responses. Higher mode effects may lead to significant tensile demand on brace connection.
Abstract A new buckling restrained braced frame system was proposed in a previous study for reinforced concrete frames, which was featured by the zigzag configuration of buckling restrained braces to ease the steel-to-concrete connection. Experimental tests were conducted to establish realistic numerical models of the brace connections in the proposed system. With these numerical models, a nonlinear dynamic analysis of a prototype building was conducted to investigate the seismic behavior of the new braced frame system. The results indicate that the buckling restrained braces in the new system are efficient in reducing the responses of the building, even if the nonlinearity of the brace connection is considered. Furthermore, the strength demands for the brace connections are significantly influenced by higher modes of the system after the braces yield.
Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration
https://orcid.org/0000-0003-3337-1011
https://orcid.org/0000-0001-6145-2818
Highlights A new BRBF system for RC structures is examined to address brace connection issues. Experimental tests are conducted on BRB connections in the new system. Nonlinearity of brace connection has marginal effects on global seismic responses. Higher mode effects may lead to significant tensile demand on brace connection.
Abstract A new buckling restrained braced frame system was proposed in a previous study for reinforced concrete frames, which was featured by the zigzag configuration of buckling restrained braces to ease the steel-to-concrete connection. Experimental tests were conducted to establish realistic numerical models of the brace connections in the proposed system. With these numerical models, a nonlinear dynamic analysis of a prototype building was conducted to investigate the seismic behavior of the new braced frame system. The results indicate that the buckling restrained braces in the new system are efficient in reducing the responses of the building, even if the nonlinearity of the brace connection is considered. Furthermore, the strength demands for the brace connections are significantly influenced by higher modes of the system after the braces yield.
Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration
https://orcid.org/0000-0003-3337-1011
https://orcid.org/0000-0001-6145-2818
Highlights A new BRBF system for RC structures is examined to address brace connection issues. Experimental tests are conducted on BRB connections in the new system. Nonlinearity of brace connection has marginal effects on global seismic responses. Higher mode effects may lead to significant tensile demand on brace connection.
Abstract A new buckling restrained braced frame system was proposed in a previous study for reinforced concrete frames, which was featured by the zigzag configuration of buckling restrained braces to ease the steel-to-concrete connection. Experimental tests were conducted to establish realistic numerical models of the brace connections in the proposed system. With these numerical models, a nonlinear dynamic analysis of a prototype building was conducted to investigate the seismic behavior of the new braced frame system. The results indicate that the buckling restrained braces in the new system are efficient in reducing the responses of the building, even if the nonlinearity of the brace connection is considered. Furthermore, the strength demands for the brace connections are significantly influenced by higher modes of the system after the braces yield.
Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration
Qu, Zhe (author) / Kishiki, Shoichi (author) / Maida, Yusuke (author) / Sakata, Hiroyasu (author) / Wada, Akira (author)
Engineering Structures ; 105 ; 12-21
2015-09-29
10 pages
Article (Journal)
Electronic Resource
English
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