20.500.12556/RUL-138559 Bayesian updating of tall timber building model using modal data A framework for the probabilistic finite element model updating based on measured modal data is presented. The described framework is applied to a seven-storey building made of cross-laminated timber panels. The experimental estimates based on the forced vibration test are used in the process of model updating. First, a generalized Polynomial Chaos surrogate model is derived representing the map from the model parameters to the eigenfrequencies and the eigenvectors. To overcome the difficulties caused by mode switching, we propose a novel approach to mode tracking based on partitioning an extended and low-rank representation of the k mode shapes resulting from different setups of the finite element model into k clusters by the k-means clustering algorithm. Second, the surrogate model derived with the help of mode pairing is used to efficiently perform sensitivity analysis and uncertainty quantification of the first five frequencies and the correspon ding mode shapes. Finally, the surrogate-based Bayesian update of the model parameters is efficiently performed, providing engineers not only with a finite element model that gives a good fit to the experimental modal data, but also a stochastic model that represents the uncertainties originating from the initial model and the uncertainties of measuring modal properties. Bayesian model updating tall CLT building Polynomial Chaos surrogate Uncertainty quantification mode pairing modal data Bayesovo posodabljanje modela visoka lesena stavba surogat na podlagi polinomičnega kaosa kvantifikacija negotovosti podobnost modalnih oblik modalne karakteristike true false true Angleški jezik Slovenski jezik Članek v reviji 2022-07-27 14:30:53 2022-07-27 14:30:57 2022-09-15 04:16:53 0000-00-00 00:00:00 2022 0 0 15 str. art. 114570 Vol. 266 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.011.1:624.07 0141-0296 10.1016/j.engstruct.2022.114570 115033603 1-s2.0-S0141029622006745-main.pdf 1-s2.0-S0141029622006745-main.pdf 1 746D0486DF969B7C56F00AB11FD3A270 73df73ebb45f36b92c16e6a93895e379964bc14a7f7b3ee84d7c7951e32fdd67 da3e98cb-2e87-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=160416 https://www.sciencedirect.com/science/article/pii/S0141029622006745 0 b45bd772-0da7-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=158926 Fakulteta za gradbeništvo in geodezijo 0 0 0