?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Model+parameter+estimation+using+Bayesian+and+deterministic+approaches%3A+the+case+study+of+the+Maddalena+Bridge&rft.creator=De+Falco%2C+A&rft.creator=Girardi%2C+M&rft.creator=Pellegrini%2C+D&rft.creator=Robol%2C+L&rft.creator=Sevieri%2C+G&rft.description=Finite+element+modeling+has+become+common+practice+for+assessing+the+structural+health+of+historic+constructions.+However%2C%0D%0Abecause+of+the+uncertainties+typically+affecting+our+knowledge+of+the+geometrical+dimensions%2C+material+properties+and+boundary%0D%0Aconditions%2C+numerical+models+can+fail+to+predict+the+static+and+dynamic+behavior+of+such+structures.+In+order+to+achieve+more%0D%0Areliable+predictions%2C+important+information+can+be+obtained+measuring+the+structural+response+under+ambient+vibrations.+This%0D%0Awholly+non-destructive+technique+allows+obtaining+very+accurate+information+on+the+structure%E2%80%99s+dynamic+properties+(Brincker+and%0D%0AVentura+(2015)).+Moreover%2C+when+experimental+data+is+coupled+with+a+finite+element+model%2C+an+estimate+of+the+boundary%0D%0Aconditions+and+the+mechanical+properties+of+the+constituent+materials+can+also+be+obtained+via+model+updating+procedures.%0D%0AThis+work+presents+two+different+model+updating+procedures.+The+first+relies+on+construction+of+local+parametric+reduced-order%0D%0Amodels+embedded+in+a+trust+region+scheme+to+minimize+the+distance+between+the+natural+frequencies+experimentally+determined%0D%0Aand+the+corresponding+numerically+evaluated+ones+(Girardi+et+al.+(2018)).+The+second+has+been+developed+within+a+Bayesian%0D%0Astatistical+framework+and+uses+both+frequencies+and+mode+shapes+(Yuen+(2015)).+Both+algorithms+are+used+in+conjunction+with%0D%0Athe+NOSA-ITACA+code+for+calculation+of+the+eigenfrequencies+and+eigenvectors.+These+procedures+are+illustrated+in+the+case%0D%0Astudy+of+the+medieval+Maddalena+Bridge+in+Borgo+a+Mozzano+(Italy).+Experimental+data%2C+frequencies+and+mode+shapes%2C+acquired%0D%0Ain+2015+(Azzara+et+al.+(2017))+have+enabled+calibration+of+the+bridge%E2%80%99s+constituent+materials+and+boundary+conditions&rft.subject=Model+updating%3B+FEM%3B+Trust+region+method%3B+Proxy+models%3B+Frequency+optimization%3B+Bayesian+updating%3B+Masonry+bridges&rft.publisher=ELSEVIER+SCIENCE+BV&rft.contributor=Bartoli%2C+G&rft.contributor=Betti%2C+M&rft.contributor=Fagone%2C+M&rft.contributor=Pintucchi%2C+B&rft.date=2018-01-01&rft.type=Proceedings+paper&rft.publisher=14th+International+Conference+on+Building+Pathology+and+Constructions+Repair+(CINPAR)&rft.source=+++++In%3A+Bartoli%2C+G+and+Betti%2C+M+and+Fagone%2C+M+and+Pintucchi%2C+B%2C+(eds.)++(Proceedings)+14th+International+Conference+on+Building+Pathology+and+Constructions+Repair+(CINPAR).+(pp.+pp.+210-217).++ELSEVIER+SCIENCE+BV+(2018)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10073963%2F1%2Fpaper175_Model%2520parameter%2520estimation%2520using%2520Bayesian%2520and%2520deterministic%2520approaches%2520the%2520case%2520study%2520of%2520the%2520Maddalena%2520Bridge.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10073963%2F&rft.rights=open