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The methods of direct measurement and analysis of the dynamic response of a building structure through real-time recording of the amplitude of low-frequency vibration (tilt) have been presented. Subject to analyses was the reaction induced either by kinematic excitation (road traffic and mining-induced vibration) or controlled action of solid-fuel rocket micro-engines installed on the building. The forces were analysed by means of a set of transducers installed both in the ground and on the structure. After the action of excitation forces has been stopped, the system (structure) makes damped vibration around the static equilibrium position.
It has been shown that the type of excitation affects the accuracy of evaluation of principal dynamic parameters of the structure. In the authors opinion these are the decrement of damping and natural vibration frequency. Positive results of tests with the use of excitation by means of short-action (0.6 second) rocket micro-engines give a chance to develop a reliable method for periodical assessment of acceptable loss of usability characteristics of building structures heavily influenced by environmental effects.
Cezary Bartmański,Wojciech Bochenek,Henryk Passia, andAdam Szade
"Measurements and analyses of principal dynamic parameters of building structures as a function of type of vibration excitation", Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63450W (21 June 2006); https://doi.org/10.1117/12.693095
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Cezary Bartmański, Wojciech Bochenek, Henryk Passia, Adam Szade, "Measurements and analyses of principal dynamic parameters of building structures as a function of type of vibration excitation," Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63450W (21 June 2006); https://doi.org/10.1117/12.693095