The Influence of Semi-Rigid Connections on the Behaviour of Beam and Column Structural System
type: CreativeWork
description: A storage racking system consists of three main parts: beams, uprights and the beam end connectors which provide semi-rigid connections between the beams and the uprights. The connections in storage systems are often boltless tabs. These tabs are engaged into perforations in the cold-formed upright sections at variable heights determined by the perforation pitch. The fundamental aim of this study was to investigate the behaviour of boltless semi-rigid connectors under loading and unloading conditions to determine the effects on the general behaviour of racking frames. A comprehensive literature review in semi-rigid joint behaviour was undertaken for heavy and light steel structures. This literature survey showed that most of the previous work in boltless beam end connectors and their applications in racking frames concentrated on the joint behaviour under the effect of direct monotonicaJJy increasing load. Most of the work that bad been carried out on semi-rigid frames was mainly theoretical with the assumption of a linear stiffness. Twenty beam end connector tests were carried out to study the effect of loading and unloading on joint behaviour. In each test two methods of displacement measurements were used in obtaining the moment curvature relationship. The same joints were tested under hogging and sagging moments to obtain a fuJI understanding of the joint behaviour. Initial moment-curvature diagrams showed different stiffness values between vertical and horizontal directions of measurement. The horizontal method gave higher stiffness values than the vertical method. This difference was investigated and two correction equations were derived reducing this difference to a small value. Results showed that under loading, the moment-curvature curve could be modelled by a multilinear curve. Reversing the direction of loading unloads the joint and the curve follows a different path which is linear until loading in opposite direction takes place. A theoretical procedure …
abstract: A storage racking system consists of three main parts: beams, uprights and the beam end connectors which provide semi-rigid connections between the beams and the uprights. The connections in storage systems are often boltless tabs. These tabs are engaged into perforations in the cold-formed upright sections at variable heights determined by the perforation pitch. The fundamental aim of this study was to investigate the behaviour of boltless semi-rigid connectors under loading and unloading conditions to determine the effects on the general behaviour of racking frames. A comprehensive literature review in semi-rigid joint behaviour was undertaken for heavy and light steel structures. This literature survey showed that most of the previous work in boltless beam end connectors and their applications in racking frames concentrated on the joint behaviour under the effect of direct monotonicaJJy increasing load. Most of the work that bad been carried out on semi-rigid frames was mainly theoretical with the assumption of a linear stiffness. Twenty beam end connector tests were carried out to study the effect of loading and unloading on joint behaviour. In each test two methods of displacement measurements were used in obtaining the moment curvature relationship. The same joints were tested under hogging and sagging moments to obtain a fuJI understanding of the joint behaviour. Initial moment-curvature diagrams showed different stiffness values between vertical and horizontal directions of measurement. The horizontal method gave higher stiffness values than the vertical method. This difference was investigated and two correction equations were derived reducing this difference to a small value. Results showed that under loading, the moment-curvature curve could be modelled by a multilinear curve. Reversing the direction of loading unloads the joint and the curve follows a different path which is linear until loading in opposite direction takes place. A theoretical procedure …
author: Abdel-Jaber, Mu'tasime S.
language: en
date modified: 2026-07-24T03:42:18Z
provider: Oxford Brookes University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Oxford Brookes University

PropertyValue
property ID: DOI
value: 10.24384/cmz0-y156