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This paper is concerned with the dynamic behaviour of an eight-storey steel-framed building. The building construction was undertaken in discrete stages, five of which are described. At each stage the natural frequencies of the building were measured using a laser system. A comprehensive forced vibration test was also performed when the building was complete to determine all of the characteristics of the fundamental modes of vibration. Both types of test are described, and the results that were obtained are presented. In parallel with the dynamic tests, numerical modelling has been conducted at each stage. The finite element model is described, and the main calculated results are presented. The measurements and calculations are then compared to provide a better understanding of the building behaviour and to identify where the numerical model needs to be improved. Finally, the benefits from the combined experimental and numerical studies are discussed.
B.R. Ellis and T. Ji
‘The Building Research Establishment’s (BRE’s) main role is to advise and carry out research for Government, principally the Department of the Environment (DOE), on technical aspects of buildings and other forms of construction, all aspects of fire, and environmental issues related to buildings’.
The paper examines developments in geotechnical matters affecting the foundation behaviour of low-rise buildings since an earlier paper was published in The Structural Engineer in 1978.
R.M.C. Driscoll, M.S. Crilly and A.P. Butcher