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- 저자 : Marzieh Obeydi (검색결과 1 건)
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Marzieh Obeydi,Maryam Daei,Mehran Zeynalian 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.5
On the structural analysis, connection eff ects should be evaluated in terms of rotational stiff ness and ultimate strength; this makes it possible to obtain realistic behavior of the structure. In this research, a simple analytical evaluation is carried out to predict the behaviors of the connections as a bi-linear curve. Mechanical properties of the initial and the second parts of this curve are obtained by component-based method and a suggested classifi cation method, respectively. The component-based method represents a joint by using a combination of rigid and fl exible components. Each of the components is modeled by means of specifi c stiff ness and strength values and they are assembled together to obtain the initial mechanical properties of the joint. The suggested classifi cation method classifi es all the components in a connection into three groups based on comparing the ultimate and the design moment strength of each component with those of the connection. By considering this procedure, a new equation is proposed to determine joint post-limit rotational stiff ness. This simple and fast method is applicable to any type of joints regardless of profi le type and applied loading. The proposed method is applied to a bolted angle, an end-plate to rectangular hollow section column and two bolted end-plate beam-to-column connections. The results are compared with those obtained from some other analytical, numerical and experimental methods. The outputs confi rm that the proposed method is simpler, more accurate and less time consume than the other methods.
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