UTE Metro L3
Madrid, Spain
Extension of Metro Line 3 in Madrid
The extension of Line 3 of the Madrid Metro to El Casar, managed by a consortium consisting of the companies Ossa, Azvi, and Cotodisa, is crucial for the Madrid community.
The construction project includes not only a new station but also pump and ventilation shafts as well as emergency exits. A key component of this project is the 2,700-meter-long mining tunnel, of which 1,400 meters were constructed using two modular tunnel formwork travellers equipped with Doka's versatile Heavy-duty supporting system SL-1.
The tunnel formwork traveller consists of the moduel and versatile Heavy-duty supporting system SL-1, equipped with SL-1 steel panels and additional transverse struts, eliminating the need for wall anchoring. This allowed for concrete pouring in daily cycles, and the transverse struts could be easily removed with a forklift after concreting, which facilitated the availability of the required drive-through opening again.
Building type
Mining Tunnel
Challenge
- Urban challenges in the heart of a vibrant metropolis require an innovative and efficient logistics concept.
- An economical formwork solution is needed that is quickly operational to meet the tight project schedule and ensure smooth site traffic.
Solution
- Close collaboration with our clients, along with just-in-time formwork deliveries, guarantees a smooth construction process.
- The pre-assembly of the tunnel formwork traveller outside the tunnel and precise lowering through a narrow shaft, combined with SL-1 profiles over the pouring openings, ensure efficient and uninterrupted progress in the tunnel.
- Significant time and cost savings were achieved by operating the SL-1 formwork traveller directly on concrete, eliminating the need to position and fix a rail. The SL-1 formwork traveller, equipped with transverse struts, made additional wall anchoring unnecessary, allowing concrete pouring on a daily cycle
Innovative Formwork Solutions for the Madrid Metro Extension
Integrated turntables ensure effortless and precise alignment of the formwork travellers, even in challenging curved areas. The operation of the 7.5-meter-long formwork traveller directly on concrete without rails significantly accelerates the construction process. Given the tight schedule, these technical innovations set critical benchmarks for the successful execution of the project.
Our collaboration with UTE METRO L3 has been marked by meticulous planning and execution. The use of Doka’s advanced formwork solutions has ensured rapid progress while maintaining the highest safety standards. The client has expressed satisfaction with our planning, timely delivery, and the overall quality of our solutions, highlighting the excellent value for money.
Gonzalo Soubrier | UTE Site Manager
"The biggest challenge for us was ensuring the project met the high technical standards required while adhering to a tight schedule in an urban environment. We chose Doka for their innovative formwork solutions and their proven track record in delivering complex infrastructure projects. Their SL-1 system provided the robustness and flexibility we needed, and their team’s expertise was invaluable in overcoming the project’s challenges."
Project data
Year of completion
2025
Project duration
2023-2025
Country
Spain
City
Madrid
Contractors
Azvi Sau, Cotodisa Obras Y Servicios Sa Y, Obras Subterraneas Sa
Building data
Construction method
Partially monolithic mining construction method
Cycle Time
Daily cycle
Section height
6.1 m
Section length
7.5 m / 15.0 m
Total length
1.400 m
Section width:
7.8 m