Description
This cut-and-cover tunnel is part of a renovation project for Terrassa's public transport system. The route extension will double daily passenger traffic reaching 32,000.
ULMA Solution
The works were carried out at a height of 17 metres because on the level below runs the underground and intermediate slabs are reduced in thickness. As a full shoring structure could not be implemented, a technically highly complex solution with vertical formwork carrier at height, shored by Towers T-500, Structures H-33, Towers BRIO and curved walers, which also provided cross reinforcement of the concrete at every 5.2 m, was developed.
The 14 m long form carrier with a vault diameter of 22 m was used to build a 130 m tunnel in successive pouring stages of 12.35 m.
A pace of work of 3 pouring stages every 2 weeks was achieved by the repositioning of the form carrier in only one day.
The reuse of the material has been ongoing, since the shoring towers and main support beams along with the other systems were dismantled after use and assembled again at the next pouring stages for subsequent movement of the structure.
