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Single-storey braced steel frame buildings SSBSFs are currently the most widely used commercial structures, which include strip malls, power centres, warehouses, small and medium-sized industrial plants. The lateral seismic or wind forces acting on such low-rise structures are usually transferred from a metal roof-deck diaphragm to a system of vertical bracing members. Because these flexible roof diaphragms have a considerable effect on the dynamic response of SSBSFs during an earthquake, they also play an important role in the evaluation of the fundamental vibration period, a key parameter in determining the magnitude of the design seismic forces.
This paper presents the results of a four-year field measurement research project on the dynamic behaviour of SSBSFs. The goal of the project was to create a reliable database for the dynamic characteristics of SSBSFs periods, mode shapes, and damping and to find a relationship between them and the geometric parameters height and plan dimensions.
The field tests are described, along with the selected buildings and experimental setup. A statistical analysis of the data, based on different regression models, yielded new proposed building geometric parameters to be used in simple equations for the prediction of the fundamental period of SSBSFs.
Keywords: ambient vibration , braced frame , dynamic , earthquake , flexible diaphragm , low-rise , seismic design , steel. Advanced Search. All Journals Journal. Canadian Journal of Civil Engineering. Corresponding author email: patrick. Abstract Single-storey braced steel frame buildings SSBSFs are currently the most widely used commercial structures, which include strip malls, power centres, warehouses, small and medium-sized industrial plants.
Modal identification of output-only systems using frequency domain decomposition. Lamarche, C. Google Scholar. Medhekar, M. Seismic evaluation of steel buildings with concentrically braced frames. Seismic evaluation of single-storey buildings. Paultre, P. Experimental investigation and dynamic simulations of low-rise steel buildings for efficient seismic design.
Paper no. Structural Vibration Solutions. Available from www. Tremblay R. Fundamental periods of vibration of braced steel frames for seismic design. Tremblay R, Stiemer SF. Seismic behavior of single-storey steel structures with flexible diaphragm.
Tukey, J. Exploratory data analysis. Addison-Wesley Publishing Co. Turek, M. Ambient vibration testing of low-rise buildings with flexible diaphragms. Cited by View all 6 citing articles Analysis of a damaged storey frame-wall concrete building during the Haiti earthquake Part I: Dynamic behaviour assessment.
Uncertainty in fundamental period estimates leads to inaccurate design seismic loads. Article Tools. Journal Tools Instructions to authors Get an email alert for the latest issue Check out the journal's featured content Follow the Journal Subscribe Now or click here for more information.
Canadian Journal of Civil Engineering
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