الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Extended end-plate connections are widely used in steel structures as moment resistance
connections. These connections consist of end-plate welded to the end of beam and field
bolted to the connecting colwnn. End-plate connections are commonly classified as semi-
rigid joints, because the concept of perfect rigid or pinned is a pure theoretical point of
view. These connections should be classified in terms of relationship between the
moment transmitted by the connection and their rotation in-plane of the connection.
According to EuroCode 3 and most researches; it can be classified by its rotational
stiffness, strength and ductility.
With the advances in modem computing techniques, finite element analysis has become
a practical tool for engineering analysis and design. Development of structural design
code equations or redevelopment them requires a wide range of experimental studies
which is costly, time consuming and uneconomical. So we can simplify this problem with
using ABAQUS, which is finite element model analysis program.
This study presents and discusses results of parametric analysis of extended end-plate
connections using FE modeling tools based on a specification for the end-plate
connection rotation. The finite element model took into account both material and
geometrical nonlinearities. The analysis was calibrated to some published experimental
results and satisfactory agreements are obtained. In this thesis, the studied parameters are
panel zone, bolt diameter, end-plate thickness, and end-plate rib stiffeners.
Study results indicate that the end-plate connection differences in the details, including
flush and extended types, colwnn stiffeners, end-plate rib stiffeners, various bolt sizes and
end-plate thicknesses, all influences the moment resistance, the initial rotation stiffness,
the rotation capacity and failure mode significantly. Extended end-plate connections are
better than flush ones. Column stiffeners and end-plate rib stiffeners can improve the end-
plate connection rotation capacity and ductility. For thinner end-plates and large bolts can
increase the stiffness of connection greatly.