20.500.12556/RUL-85911 Vpliv gradbene mehanizacije na vibracije in posledične poškodbe objektov diplomska naloga Impact of construction machinery on vibrations and resulting damage on buildings V diplomski nalogi smo obravnavali vpliv vibracij zaradi prometne obtežbe in gradbene mehanizacije na obstoječe objekte. Ukrepi, s katerimi bi lahko zaščitili konstrukcije, so zelo omejeni, zato je potrebno določene izračune in meritve vibracij izvesti pred gradbenimi deli. Parameter za presojo vpliva vibracij na objekte, ki je splošno priznan in ga primerjamo s kriteriji podanimi v standardih, je vršna hitrost delca. Na osnovi vršne hitrosti delca lahko določimo, katera je minimalna razdalja med izvorom in obstoječim objektom, da ne pride do poškodb. V Sloveniji nimamo standarda za določanje mejnih vrednosti vršnih hitrosti, zato so v uporabi evropski standardi. V diplomski nalogi smo navedli mejne vrednosti vršnih hitrosti, kot jih določajo britanski, nemški, avstrijski in švicarski standardi. S programskim orodjem Plaxis 2D smo izvedli geodinamično analizo vpliva gradbenih naprav na temeljna tla. Ker nas zanimajo hitrosti površinskih valov, smo merilne točke postavili na površje. Pri analizi smo v izbranem časovnem intervalu spremljali potek hitrosti in zabeležili največjo absolutno hitrost. Zanimal nas je vpliv karakteristik tal na rezultate, zato smo spreminjali togost tal v prvem računskem primeru in dobljene podatke primerjali z empiričnimi enačbami. V drugem računskem primeru smo primerjali rezultate linearno elastičnega in HS-Small modela ter prišli do ugotovitve, da je uporaba slednjega bolj primerna za analizo točnih vibracij. This thesis deals with impact of traffic and construction-induced vibrations on existing facilities. Protecting measures are very limitied, therefore it is necessary to set out the calculations and measurrements before the construction work. Parameter for assesing the impact of vibration on the building, which is widely recognized and compared to the criteria given in standard, is peak particle velocity. Based on the peak particle velocity we can determine the minimum distance between the source and existing building, in order to avoid construction damage. Slovenia has no standard for setting limit values for peak particle velocity. We have listed the limit values of peak particle velocity as defined in British, Austrian, German and Swiss standards. Dynamic analyses with computer program Plaxis were carried out to analyze the impact of consrtuctioninduced vibrations on the ground. Since we are interested in the surface waves, the measuirng points were set on ground surface. We selected the appropriate time interval and recorded the highest peak particle velocity. As we were interested in the influence of soil characteristics on the results, the stifness of the ground was varied in the first case and the results compared to empirical equation. In the second case, the results using two different soil material models were compared. A linear-elastic and HS-Small model were used to model the soil. As in first case, the comparission of the calculated peak particle velocities showed, that the HS-Small model is more suitable for the analysis of ground vibrations. gradbeništvo diplomska naloga UNI vibracije vršna hitrost delca linearno elastičen model Rayleighovo dušenje graduation thesis vibration peak particle velocity linear elastic model Rayleigh damping true false false [D. Vulović] Slovenski jezik Angleški jezik Diplomsko delo 2016-09-29 02:51:51 2016-12-06 15:23:09 2022-12-16 14:44:31 0000-00-00 00:00:00 2016 0 Ljubljana 2016 Ljubljana XII, 63 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 614.872:697.912(043.2) 7824993 GRU3520_Vulovic.pdf GRU3520_Vulovic.pdf 1 B3354721DD6F07BF551AB4BF3DCA7FA1 1f82b95554c8221fcd4d221e88e51f39a180daa88c97472e174ff46a44a3c3cd 005ed0f4-a1b3-11eb-a523-00155dcfd717 20.500.12556/rul/66aad02d-3413-474d-b72f-0272ba1f9f35 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=98479 Fakulteta za gradbeništvo in geodezijo 0 0 0