Numerical Analysis of Cyclic Behavior of Beam-To-Column Bolted Connections in Steel Frames

Journal of Structural Engineering and Geo-Techniques

مقاله 3، دوره 5، شماره 1، خرداد 2015، صفحه 21-29   

نویسندگان

Morteza Rastian¹؛ Asghar Vatani Oskouieb²؛ Hassan Aghabaratic³

¹M.Sc. in Civil, Structural Engineering, Takestan Branch, Islamic Azad University, Takestan, Iran

²Department of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran ,Iran

³Department of Civil and Architectural Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran

چکیده

This article considers the seismic behavior of beam-to-column joints in steel frames for different bolt arrangements by using of finite element modeling. As the most important beam-to-column joint type, the beam-to-column joints with end-plate is chosen for the analysis.
Four different specimens have been analyzed. These models had some differences such as bolt arrangement and the presence or absence of end-plate stiffeners. Design of bolts arrangement and stiffeners have been done based on the AISC standards. Two vertical bolt arrangements, with or without stiffener and two other models with horizontal bolt arrangement, with or without stiffeners have been considered. Different aspects such as energy absorption, ductility, initial stiffness and effective stiffness for all specimens have been compared. Finally effect of pre-stressing of all specimens has been assessed. As a result, comparison between vertical bolt arrangement and horizontal bolt arrangement has shown that the vertical bolt arrangement is more advantageous, especially in energy absorption

کلیدواژه‌ها

Beam-to-column joint؛ End-plate؛ Cycling load؛ Bolt arrangement؛ Stiffener؛ Pre-stressing