Identifying the damping contribution of building components based on measured top vibration
conference paper
In this paper, a damping model for a high-rise building is introduced. This model is used to investigate the possibilities to identify the relative damping contribution of the internal material damping in building elements, energy loss at element interfaces and energy outflow at the interface with the ground. The building is modeled as an Euler-Bernoulli beam which is elastically supported at its base by a translational and rotation spring, including viscous damping elements. The beam has internal viscous material damping and is attached to a distributed viscous damper. Data obtained from conventional full scale measurements of the vibrations at the top of a high-rise building, is used to calibrate the model. Values of the model parameters which result in a best fit, are found from calculation of the least square error between the simulated and measured response. It is concluded that the conventional performed measurements don't provide enough data to uniquely determine the relative contribution of the different damping components. A new measurement method is needed in order to identify the relative contribution.
Topics
ComfortTall buildingsWindBuilding componentsCivil engineeringComputational methodsEnergy dissipationEngineering geologyInterfaces (materials)Structural dynamicsDamping contributionEuler Bernoulli beamsFull scale measurementsLeast square errorsNew measurement methodRelative contributionViscous damping elementsComputer simulation
TNO Identifier
503176
Publisher
National Technical University of Athens
Source title
4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, 12-14 June 2013, Island of Kos, Greece
Collation
17 p.
Pages
3479-3495
Files
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