WELDING AND INSTALLATION OF STEEL BRIDGE CONSTRUCTION OVER THE KUPA RIVER IN GORNJE POKUPJE

U ovom diplomskom radu opisan je i prikazan donji i gornji ustroj novog mosta preko Kupe u Gornjem Pokupju uključujući sve primjenjene tehnologije zavarivanja čelične konstrukcije mosta kao što su MAG zavarivanje punom i punjenom žicom, EPP zavarivanje i elektrolučno zavarivanje pritiskom. Također, u radu je opisano i atestiranje postupka zavarivanja, zavarivača i opreme za zavarivanje te su prikazani ovlašteni dokumenti o klasifikaciji istih. Detaljno je razrađen plan kontrole zavarivanja i montaže od vremena prije početka izrade u radionici do vremena tijekom izvođenja radova na gradilištu te je opisana vizualna, ultrazvučna i penetrantska metoda ispitivanja zavarenih spojeva na mostu. Na kraju je opisan tehnološki postupak montaže mosta uključujući montažu privremenih oslonaca te predmontiranje, dizanje i povlačenje segmenata mosta prema upornjaku. U zaključku je navedena važnost kontrole i kvalitete tijekom izvođenja radova te je dan sažet prikaz relevantnih spoznaja, informacija i činjenica vezanih za samu izradu mosta.This thesis describes the upper and lower segments of the new bridge on the river Kupa in Gornje Pokupje, including all of the technologies used for steel welding, e.g. MAG welding using solid wire and flux cored wire electrodes, EPP welding and arc pressure welding. Furthermore, the thesis describes the certification of the welding process, the welders and the welding equipment and shows some examples of classification documents. Welding and construction control plan has been analyzed thoroughly, from the time the parts are starting to be made in the workshop to the construction work being done on the construction site. Visual, ultrasonic and penetration weld testing methods have been analyzed, as well. Lastly, the thesis goes through the process of bridge construction, including the creation of temporary supporting structures, preconstruction and the process of lifting and pulling the bridge segments toward the abutments. In conclusion, the thesis puts emphasis on the importance of control and quality of the construction work and shows a summarized list of important insights, information and facts related to the construction of the bridge