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Abstract
Beam-to-column connection is a rigid connection used in steel moment frames which acts as the main resisting system in structural design. Haunches with double beam section height at the eave, ridge and crane bracket are usually used to resist the large bending moment at the critical locations of the steel frames. Damper devices can be used as the main source of producing forces used to reduce the bending moment due to different static and dynamic loads. This study focuses on improving the steel beam-column connection with the proposed control system in the eave connection which can also be used under the bracket which supports crane beam in industrial buildings. The purpose of this study is to describe the development of the beam-column steel connection incorporating dampers installed to beam bottom flange to reduce the effect of applied load on the frame without the need to create haunches to make the connection design more efficient.
Highlights
A structure must be designed and constructed to safely resist the applied loads
This study describes an improvement of the steel beam-tocolumn connections in frame industrial buildings
The proposed system can be used at the critical connections of the steel frame such as the eave and crane bracket connections of the high values of the bending moments
Summary
A structure must be designed and constructed to safely resist the applied loads. The forces applied to a building must be transferred through its structural framework to the building foundation and the supporting ground. Portal framed steel structures are the most common type of industrial buildings They are very efficient and economical when used for single-story buildings provided that the design details are cost effective and the design parameters and assumptions are well chosen. To obtain an economical rafter design, it is important to ensure that the design bending strength is as close as possible to the section capacity which for many sections will be the plastic moment capacity. This capacity is usually achieved by the use of adequate restraints such as fly braces to restrain the inside rafter and lateral column flanges laterally. A proposed system using friction dampers called ring springs as bracing system is used to allow a more efficient design, both statically and dynamically
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