http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mohamadhosein Naserifard,Mohamad Ghasem Vetr 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.5
The steel beam to concrete column connections in moment frames has been studied during recent years. This system has more advantages compared with steel and concrete systems. There are two kinds of joints, including “through-beam-type” and “through-column-type”. One of the most important parts of the composite structures is their connections. Recently, the various experiments have been performed on the steel beam-concrete column composite structures. In this research, one kind of the joints was modeled in the ABAQUS fi nite element program and its seismic performance was verifi ed by the experimental results. A parametric study was conducted on the eccentric load, axial load in the center of column, the compressive strength of the concrete, the resistance of the steel and the steel cover plate height eff ects. The obtained results showed the eff ectiveness of these parameters on the behavior of connections.
Local and global buckling condition of all-steel buckling restrained braces
Seyed Masoud Mirtaheri,Meissam Nazeryan,Mohammad Kazem Bahrani,Amin Nooralizadeh,Leila Montazerian,Mohamadhosein Naserifard 국제구조공학회 2017 Steel and Composite Structures, An International J Vol.23 No.2
Braces are one of the retrofitting systems of structure under earthquake loading. Buckling restrained braces (BRBs) are one of the very efficient braces for lateral loads. One of the key needs for a desirable and acceptable behavior of bucklingrestraining brace members under intensive loading is that it prevents total buckling until the bracing member tolerates enough plastic deformation and ductility. This paper presents the results of a set of analysis by finite element method on buckling restrained braces in which the filler materials within the restraining member have been removed. These braces contain core as the conventional BRBs, but they have a different buckling restrained system. The purpose of this analysis is conducting a parametric study on various empty spaces between core and restraining member, the effect of friction between core and restraining member and applying initial deformation to brace system to investigate the global buckling behavior of these braces. The results of analysis indicate that the flexural stiffness of restraining member, regardless of the amount of empty space, can influence the global buckling behavior of brace significantly.