Naslov
Pit excavation for underground construction in an urban area near an old tunnel

Autori
Arbanas, Željko ; Vivoda, Martina ; Kursar, Petar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses / Alejano, Perucho, Olalla & Jiménez - London : Delhi : Taylor & Francis, 2014, 1105-1110

ISBN
978-1-138-00149-7

Skup
Eurock 2014

Mjesto i datum
Vigo, Španjolska, 27.05.2014. - 29.05.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pit excavatio; reinforcing system; rock mass; inclinometer measurments;

Sažetak
A business center’s 4-story underground garage in the center of Rijeka, Croatia is under construction. The excavation of an open pit for the underground garage commenced during Spring 2012 and was completed in December 2013. The construction site is located very close to an old shallow railway tunnel constructed in 1870. The tunnel was constructed without any rock mass reinforcement. The excavation pit for the underground garage is located only 6.0m from the side of the existing railway tunnel. The pit excavation had a significant effect on the existing tunnel construction ; thus, a reinforcement of the rock mass using rock bolts and multi-layered reinforced sprayed concrete was embedded. In this paper we present a design for pit construction including numerical models and geotechnical analyses. Based on these analyses, a required reinforcement of rock mass around the tunnel and an appropriate support system for the stabilization of pit walls was designed and executed.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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