doi:10.3850/978-981-07-7136-2_296
Deformation Characteristics of Shear Connections with Different Configurations Under Complex Loadings
Professor Kwok-Fai Chung
Department of Civil and Environmental Engineering
The Hong Kong Polytechnic University
Hong Kong SAR
China
Email: cekchung@polyu.edu.hk
Biography
Prof. K F CHUNG is a Professor in the Department of Civil and Environmental Engineering at the Hong Kong Polytechnic University, Hong Kong. He is a Chartered Engineer in both the U.K. and Hong Kong. Currently, Prof. Chung is President of the Hong Kong Constructional Metal Structures Association, and Council Member of the Institution of Structural Engineers, the U.K..
Prof. Chung is a renowned academic, researcher and structural engineer with established expertise in steel construction. He works on a wide range of inter-disciplinary engineering analysis and design, especially on modern steel and composite building structures. His research interests include limit state analysis and performance-based design of structural steel systems, structural fire engineering and fire protection in buildings and tunnels, and design codification. He had authored about 150 technical papers together with 5 Professional Design Guides published by the Steel Construction Institute. More recently, Prof. Chung also contributed two chapters on composite construction to the 7th Edition of the classic Steel Designers’ Manual.
Prof. Chung works closely with design and construction engineers for both public and private construction projects in the Asia Pacific region as well as with steel mills and fabricators in China. He has organized and contributed many international symposia and seminars in Hong Kong, Singapore, Malaysia and Macau over the last 10 years.
Currently, Prof. Chung is working with the Construction Industry Council in Hong Kong to facilitate smooth adoption of Eurocodes 3 and 4 in Hong Kong, and provides professional training and technical guidelines to practising engineers.
Abstract
In order to qualify and quantify the deformation characteristics of shear connections with different configurations commonly adopted in building construction, a systematic experimental and numerical investigation on a wide range of practical shear connections with both solid concrete slabs and composite slabs has been carried out. This paper presents key findings of the investigation onto these shear connections in both standard and modified push-out tests. It should be noted that while the shear connections in standard tests are under direct shear forces, the shear connections in modified tests are under combined shear and tension forces. The measured load-slippage curves of these shear connections are rationalized to provide representative load-deformation characteristics of the connections which exhibit various degrees of ductility at both small and large deformations. Moreover, advanced finite element modelling is also carried out to establish effective models to examine the deformation characteristics of shear connections with different configurations under shear forces as well as under combined shear and tension forces. Based on the results of three different parametric studies on models of various shear connections, significant reductions in the shear resistances of these connections are obtained. Hence, the deformation characteristics of a wide range of practical shear connections with different configurations are readily predicted to provide detailed understandings on the structural performance of these shear connections.
