EVALUATING THE OVERSTRENGTH OF CONCENTRICALLY BRACED STEEL FRAME SYSTEMS CONSIDERING MEMBERS POST-BUCKLING STRENGTH

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MAHMOUDI M.; ZAREE M.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF CIVIL ENGINEERING Year:2011 | Volume:9 | Issue:1 Page(s): 57-62

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Title

EVALUATING THE OVERSTRENGTH OF CONCENTRICALLY BRACED STEEL FRAME SYSTEMS CONSIDERING MEMBERS POST-BUCKLING STRENGTH

Author(s)

MAHMOUDI M. | ZAREE M. | Issue Writer Certificate

Keywords

CONCENTRICALLY STEEL BRACED FRAMES

OVERSTRENGTH FACTOR

POST-BUCKLING STRENGTH

RESPONSE MODIFICATION FACTOR

Abstract

Inelastic deformation of structural components is generally acceptable in seismic design. In such behavior, the strength of structures increases while plastic hinges are formed in members frequently. The strength revealed during the formation of plastic hinges is called "overstrength". Overstrength is one of the important parameters in the seismic design of structures. The present study tries to evaluate the overstrength of the CONCENTRICALLY STEEL BRACED FRAMES (CBFs), considering reserved strength, because of members post-buckling. As such, a static nonlinear (pushover) analysis has been performed on the model buildings with single and double bracing bays, different stories and brace configurations (chevron V, invert V and X-bracing). It has been realized that the number of bracing bays and the height of buildings have a low effect on reserve strength due to brace post-buckling. However, these parameters have a profound effect on the OVERSTRENGTH FACTOR. These results indicate that the overstrength values for CBFs, proposed in seismic design codes, need to be modified.

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APA: Copy

MAHMOUDI, M., & ZAREE, M.. (2011). EVALUATING THE OVERSTRENGTH OF CONCENTRICALLY BRACED STEEL FRAME SYSTEMS CONSIDERING MEMBERS POST-BUCKLING STRENGTH. INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 9(1), 57-62. SID. https://sid.ir/paper/271860/en

Vancouver: Copy

MAHMOUDI M., ZAREE M.. EVALUATING THE OVERSTRENGTH OF CONCENTRICALLY BRACED STEEL FRAME SYSTEMS CONSIDERING MEMBERS POST-BUCKLING STRENGTH. INTERNATIONAL JOURNAL OF CIVIL ENGINEERING[Internet]. 2011;9(1):57-62. Available from: https://sid.ir/paper/271860/en

IEEE: Copy

M. MAHMOUDI, and M. ZAREE, “EVALUATING THE OVERSTRENGTH OF CONCENTRICALLY BRACED STEEL FRAME SYSTEMS CONSIDERING MEMBERS POST-BUCKLING STRENGTH,” INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, vol. 9, no. 1, pp. 57–62, 2011, [Online]. Available: https://sid.ir/paper/271860/en

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