| Popis: |
This paper presents a comparative analysis of four phased construction models for two-tube tunnels on motorways, using information gained during construction of different tunnels on Croatian motorways. They all have the same cross-section, all were built using the “drill & blast technique”, all are based on the NATM and all were in similar rock conditions. Main comparative parameters, to be used in the comparative analysis are: costs, safety, traffic volume, technology, regulations, risks, construction progress... The paper aims to find the optimal construction model for two-tube tunnels on motorways, from the aspects of above mentioned comparative parameters. |
