Abstract
There is experimental evidence that the people interacting with structures are not only an active load but also affect the structural properties. Particularly, considerable damping ratio value changes are often experienced. This fact assumes a relevant importance in assessing the structure serviceability against vibrations due to pedestrian induced loads. There is therefore ground to find methods capable of estimating the effect induced by people interacting with a structure, in terms of both changes of modal parameters and of loading effect. This work aims at presenting a model, partly based on modal approach, able to describe people effect on a structure. Each person is modelled as a two degrees of freedom spring-mass-damper system and is introduced locally on the structure. Several tests on a lightly damped staircase were then carried out to validate the model.
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References
Sachse R, Pavic A, Reynolds P (2003) Human–structure dynamic interaction in civil engineering dynamics: a literature review. Shock Vib Digest 35(1):3–18
Reynolds P, Pavic A, Ibrahim Z (2004) Changes of modal properties of a stadium structure occupied by a crowd. In: Proceedings of XXII international modal analysis conference, Orlando, 2004
Sachse R (2002) The influence of human occupants on the dynamic properties of slender structure. Ph.D. Thesis, The University of Sheffield, UK
Pedersen L (2012) Damping effect of humans. In: Proceedings of the SEM IMAC XXX conference, Jacksonville, January 30–February 2, 2012
Ewins DJ (2001) Modal testing: theory, practice and application, 2nd edn. Taylor and Francis, London
Matsumoto Y, Griffin MJ (2003) Mathematical models for the apparent masses of standing subjects exposed to vertical whole-body vibration. J Sound Vib 260(3):431–451
Krenk S (2007) Lectures presented at ‘Semi–Active Vibration Suppression – The Best from Active and Passive Technologies’. CISM, Udine
Woodbury MA (1950) Inverting modified matrices. Statistical Research Group, Memo. Rep. no. 42, Princeton University, Princeton
Peeters B et al (2004) The PolyMAX frequency-domain method: a new standard for modal parameter estimation? Shock Vib 11(3–4):395–409
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© 2013 The Society for Experimental Mechanics, Inc.
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Cappellini, A., Manzoni, S., Vanali, M. (2013). Quantification of Damping Effect of Humans on Lightly Damped Staircases. In: Catbas, F., Pakzad, S., Racic, V., Pavic, A., Reynolds, P. (eds) Topics in Dynamics of Civil Structures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6555-3_49
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DOI: https://doi.org/10.1007/978-1-4614-6555-3_49
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