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SUMMARY:Probabilistic assessment of low frequency floors due to human loco
 motion - Angus Peters\, Department of Engineering\, University of Cambridg
 e
DTSTART:20201204T150000Z
DTEND:20201204T160000Z
UID:TALK157243@talks.cam.ac.uk
CONTACT:Dr Maria Marques de Carvalho
DESCRIPTION:Low\nfrequency floors are those in which the\npredominate resp
 onse is a resonant one Modelling\nof a structure has historically and trad
 itionally been\nbased on a deterministic process In such\nprocedures walki
 ng is modelled through a Fourier\nseries in the time domain and is assumed
  to be\nperfectly harmonic However research has shown\nthis to be incorrec
 t and walking is in fact a\nnarrowband process with energy leakage through
 \neach harmonic Deterministic methods select a\nwalking frequency that mat
 ches a harmonic of\nwalking with a resonant frequency of the structure\nwi
 th no consideration for the uncertainty in the model\nand likelihood of su
 ch events occurring The PhD\nresearch conducted therefore addresses this\n
 problem through a probabilistic framework that\nfurther considers factors 
 traditionally outside the\nscope of design codes such as human structure\n
 interactions and selection of appropriate damping\nDamp\ning predictions i
 n structures pre construction is\na difficult task Damping of structural s
 ystems such\nas office spaces gain most of their damping through\nradiatio
 nal dissipation of energy to non structural\nelements such as false floors
 \, partitions and\nfurniture Current guidelines suggest a range of\nvalues
  of damping\, however testing has shown that\nthese predictions are often 
 conservative and wrong\nA predictive procedure is put forward to address t
 he\ncurrent shortcomings with the aid of various machine\nlearning techniq
 ues
LOCATION:Zoom (email structures-admin@eng.cam.ac.uk for link)
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