20.500.12556/RUL-188705 Numerična simulacija odziva običajnega zidovja iz opečnih votlakov in PU lepila na horizontalno obtežbo Numerical simulation of the response of unreinforced masonry built from hollow clay masonry units and PU glue under horizontal loading V magistrskem delu je obravnavan odziv običajnega zidovja iz opečnih votlakov, povezanih s poliuretanskim (PU) lepilom, pri delovanju horizontalne obtežbe. Glavni cilj naloge je razvoj 3D numeričnega modela, ki omogoča simulacijo mehanskega odziva zidovja. Simulacija vključuje ustrezno ponazoritev nosilnosti, deformabilnosti in razvoja poškodb pri naraščajoči vodoravni obtežbi. Za validacijo modela so uporabljeni rezultati predhodno izvedenih eksperimentalnih preiskav, ki vključujejo strižne in tlačne preizkuse ter ciklične strižne teste zidanih slopov pri različnih nivojih tlačne obremenitve. Numerične analize so izvedene v programu Abaqus/Explicit z uporabo poenostavljenega 3D mikro-modeliranja. Zidaki so modelirani s tridimenzionalnimi končnimi elementi, njihovo nelinearno obnašanje pa je opisano z modelom poškodovanosti betona (CDP). Stiki med zidaki so modelirani s kontakti, v katerih so upoštevani kohezija, trenje ter postopna degradacija stika. Materialni in kontaktni parametri so določeni na podlagi eksperimentalnih rezultatov ter občutljivostne analize. Razviti model je uporabljen za simulacijo zidanih slopov pri treh nivojih tlačne napetosti, ki ustrezajo 10 %, 15 % in 20 % karakteristične tlačne trdnosti zidovja. Primerjava numeričnih in eksperimentalnih odzivov predstavlja validacijo sposobnosti modela za napoved odziva sila-zasuk in značilnih mehanizmov poškodovanosti. Razviti model je uporaben za oceno potresnega odziva običajnega zidovja poljubne geometrije in robnih pogojev ter predstavlja dober nadomestek oz. dopolnitev eksperimentalnih raziskav. This master's thesis investigates the response of unreinforced masonry built with clay hollow blocks bonded with polyurethane (PU) adhesive under horizontal loading. The main objective is to build a 3D numerical model capable of simulating the mechanical response of masonry, including an adequate representation of load-bearing capacity, deformability and damage evolution under increasing lateral loading. The model is validated against the results of previously conducted experimental tests, which include shear and compression tests as well as cyclic shear tests on masonry piers subjected to different levels of vertical precompression. The numerical analyses are performed in Abaqus/Explicit using a simplified 3D micro-modelling approach. The masonry units are modelled with three-dimensional finite elements, and their nonlinear behaviour is described by the Concrete Damaged Plasticity (CDP) model. The interfaces between the units are modelled as contact interactions that account for cohesion, friction and progressive degradation of the joint. The material and contact parameters are determined from experimental results and a sensitivity analysis. The developed model is used to simulate masonry piers under three levels of compressive stress, corresponding to 10%, 15% and 20% of the characteristic compressive strength of masonry. The comparison between the numerical and experimental responses validates the model's ability to predict the force-drift response and the characteristic damage mechanisms. The developed model can be used to assess the seismic response of unreinforced masonry of arbitrary geometry and boundary conditions, and is a good substitute for, or complement to, experimental research. Običajno zidovje potresni odziv 3D mikro-model potisna analiza Abaqus. Unreinforced masonry seismic response 3D micro-model pushover analysis Abaqus. true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-26 07:46:05 2026-09-26 07:46:12 2026-09-27 04:19:05 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 183599 24003.pdf 24003.pdf 1 CCA7BC9B288A7E7AFA809FF06609241C 680279c8e76be301a0aee2250d66a8e89eb47695818d1df5bc18e1454fe08369 7df389d0-b96d-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=249030 Fakulteta za gradbeništvo in geodezijo 0 0 0