Application of FRP Material in Buckling Restrained Braces.

Document Type : Research Paper

Authors

Abstract

In this paper, for the first time functionality using FRP material as case of buckling restrained brace to prevent buckling, has been studied by stress tests on various samples in vitro. The experiments was performed on different samples bracing with GFRP case and bracing without GFRP case with a fixed length of 800mm and the results were interesting. In the testing sample bracing without casing, the maximum axial compressive load bearing by bracing was recorded 52.45 kN, while it was lower submitted to tensile steel core, namely 198 kN And overall buckling was developed. But in the testing sample bracing with GFRP case was surrounded around of fort axis in total free length core, the axial compressive load bearing by core was recorded 200 kN while it was most of submitted to tensile steel core and It was found that this innovation has contributed conditions buckling restrained brace, while there is no buckling in the bracing view. Also check the load-displacement curve showed that the energy absorption capacity of the sample bracing with GFRP case was surrounded around of fort axis in total free length core was Compared to other samples has increased substantially.

Keywords


[1] American Institute of Steel Construction, ( “AISC, Seismic Provisions for Structural Steel BuildingChicago
[2] Jinkoo Kim, and Hyunhoon Choi, (”Behavior and design of structures with buckling-restrained braces”, Department of Architectural Engineering, Sungkyunkwan University, Chunchun-dong, Jangan-gu, pp.
[3] Frederick F, Tajirian, Ian D. Aiken, Isao Kimura, (2003),”Application of Buckling- Restrained Braces in the United States”, 8th World Seminar on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures Yerevan, Armenia, pp. 
[4] Chia-Ming Uang, and Masayoshi Nakashima, “steel Buckling-Restrained braced Frames”,CRC PressLLC.
[5] R.T.Ranf , ( “Analysis and design comparison between unbounded and conventional bracing”, CEE 513, Advanced Steel Design.
[6] Qiang Xie, (), “State of the art of buckling-restrained braces in Asia”,Journal of Constructional Steel Research ,Vol. , No.6, pp. 728-748
[ 7 [ مهدیزاده، میمدبا ر ب زندی، ینس ب ر ب میمد اسم ) 1389 (، "ماربرد برق های پلی ا یلنی در بادبندهای ممانن ناپذیر"، نشریه
سازه ب فنلاد، دبره 6 ، شماره 7 ، بهار ب ابستان 1389 ، صفیه 43 - 57 .
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[9] Razaqpur, A. G., and Kashef, A. H., ( , “State-of-the-Art on Fiber Reinforced Plastics for Buildings”, Submitted to: Institute for Research in Construction – National Research Council of Canada, Carleton University,Ottawa.
[ 10 [ ازهری، مجتبی میر ادری ب سید رسنل ) 1390 (، "ورا ی سازه های فنلادی"، لد چهار ، چاپ سن ، انتشارات ارمان.