INTRODUCTION OF A NEW MEMBER TO PROMOTE THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED FRAMES

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KORDI A.; SabaghYazdi S.R.

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON RESEARCH IN ENGINEERING, SCIENCE AND TECHNOLOGY
Year:2016 | Issue:4

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Title

INTRODUCTION OF A NEW MEMBER TO PROMOTE THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED FRAMES

Author(s)

KORDI A. | SabaghYazdi S.R.

Keywords

BUCKLING POTENTIAL

SEISMIC BEHAVIOR

HYSTERESIS CURVES

NEW MEMBER

Abstract

CONCENTRICALLY BRACED FRAME IS KNOWN AS AN ECONOMIC AND COMMON STRUCTURAL SYSTEM BY CIVIL ENGINEERS. ON THE OTHER HAND ITS SEISMIC BEHAVIOR HAS SOME FAULTS. EARLY BUCKLING OF COMPRESSIVE BRACE, UNBALANCED FORCE DISTRIBUTION BETWEEN BRACES AFTER BUCKLING, RESIDUAL ELONGATION OF TENSION BRACE, BOARDING REDUCTION AND IMPACT IN GUSSET PLATE DURING NEXT CYCLES AND LOW ENERGY LOSS ARE SOME IMPORTANT FAULTS OF THIS STRUCTURAL SYSTEM. IN THIS PAPER A NEW CROSS SHAPE MEMBER INCLUDING CYLINDERS, SPRING, PISTONS AND SLIP POSSIBILITY WHICH ITS INTERIOR SPACE IS FULL WITH A COMPRESSIVE LIQUID AND PLACED AT THE CENTER OF BRACES INTERSECTION IS INTRODUCED. MODELING OF THE FRAMES INCLUDING NEW MEMBER HAVE BEEN DONE WITH ANSYS FEM SOFTWARE AND THE EFFECTS OF NEW MEMBER ON FORCE DISTRIBUTION AND BUCKLING POTENTIAL OF BRACES HAS BEEN STUDIED AND ALSO THE HYSTERESIS CURVES OF THE FRAMES UNDER CYCLIC LOAD HAVE BEEN COMPARED WITH CONCENTRICALLY BRACED FRAMES. THE RESULTS SHOW THAT THE DISTRIBUTION OF FORCE IN BRACES OF FRAMES WITH NEW MEMBER IS BALANCED AND THE MAXIMUM AXIAL LOAD AND THE BUCKLING POTENTIAL OF BRACES EXPERIENCE A HIGH REDUCTION. THE REDUCTION OF AXIAL LOAD CAUSES LOWER DESIGN EXPENSES. THE COMPARISON OF THE AREA OF HYSTERESIS CURVE LOOPS SHOWS THAT IN FRAMES WITH NEW MEMBERS THE AREAS HAVE INCREASED AND IT MEANS THE DUCTILITY OF THESE FRAMES AND THEIR SEISMIC BEHAVIOR HAVE PROMOTED.

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APA: Copy

KORDI, A., & SabaghYazdi, S.R.. (2016). INTRODUCTION OF A NEW MEMBER TO PROMOTE THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED FRAMES. INTERNATIONAL CONFERENCE ON RESEARCH IN ENGINEERING, SCIENCE AND TECHNOLOGY. SID. https://sid.ir/paper/929205/en

Vancouver: Copy

KORDI A., SabaghYazdi S.R.. INTRODUCTION OF A NEW MEMBER TO PROMOTE THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED FRAMES. 2016. Available from: https://sid.ir/paper/929205/en

IEEE: Copy

A. KORDI, and S.R. SabaghYazdi, “INTRODUCTION OF A NEW MEMBER TO PROMOTE THE SEISMIC BEHAVIOR OF CONCENTRICALLY BRACED FRAMES,” presented at the INTERNATIONAL CONFERENCE ON RESEARCH IN ENGINEERING, SCIENCE AND TECHNOLOGY. 2016, [Online]. Available: https://sid.ir/paper/929205/en

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