Browse > Article

Analytical Study for Seismic Retrofit of SMRFs Connections  

Oh, Sang Hoon (부산대학교 건축학부)
Kim, Young Ju (고려대학교 건축.사회환경공학과 BK21)
Publication Information
Journal of Korean Society of Steel Construction / v.20, no.3, 2008 , pp. 445-454 More about this Journal
Abstract
Based on previous research on steel moment connections, experimental and analytical results showed that the deformation capacity was poor in specimens using RHS columns and with conventional weld access holes and strain concentration at the end of beam is influenced by the efficiency in transmitting the moment in the web of beam through the beam-to-column joint. This paper is focused on the retrofitting of pre-Kobe steel moment frame connections using a stiffened RBS and a welded horizontal stiffener. These retrofitting methods were considered only in beam bottom flange. A parametric study was performed using nonlinear finite element analysis to elucidate and improve the retrofit methods of connections.
Keywords
Existing moment connection; Retrofit; RHS column; Reduced beam section(RBS); Horizontal stiffener; Nonlinear finite element analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Matsumoto, H. Akiyama and S. Yamada. (1999). Relationship between deformation capacity of beam at steel beam-to-column connection and joint efficiency. J. Struct. Constr. Eng., AIJ, 523(9), pp. 117-124
2 Y.J. Kim, S.H. Oh (2006), Effect of moment transfer efficiency of a beam web on deformation capacity at box column-to-H beam connections, Journal of Constructional Steel Research., Vol. 63, pp. 24-36   DOI   ScienceOn
3 Y.J. Kim, S.H. Oh and T.S. Moon. (2004). Seismic behavior and retrofit of steel moment connections considering slab effects. Eng. Struct., 26(13), pp. 1993-2005   DOI   ScienceOn
4 K. Okada, S.H. Oh and S. Yamada. (2003). Effect of joint efficiency at beam-to-column connection on ductility capacity of composite beams. J. Struct. Constr. Eng., AIJ, 573(11), pp. 185-192
5 Steel Design Guide Series 12. (1999). Modification of existing welded steel moment frame connections for seismic resistance, AISC
6 S.H. Oh, Y.J. Kim, T.S. Moon (2007), Cyclic performance of existing moment connections in steel retrofitted with a reduced beam section and bottom flange reinforcements, Canadian journal of civil engineering, Vol.34(2), pp. 199-209   DOI
7 K. Okada, S.H. Oh, S. Yamada, T. Imaeda, M. Yamaguchi and A. Wada. (2001). Experimental study on deformation capacity of composite beams with conventional type beam-to-column connections. Journal of Structural Construction and Engineering, AIJ, 547(9), pp. 161-168