technology

Technological Solutions

With the significant support from the Research and Development Department, ConstruGomes invests time and resources on the search of new and better solutions in the production and technological area.

Form Travellers
Form Travellers are used in the construction of “in situ” bridge decks, by the cantilever method. This method is essentially based in the construction of symmetrical balanced cantilevers, 3 to 6 meters, from the pylons, designated by segments. After the concreting of a section, the form travellers move through rails for the concreting of the next section, leaning on the preceding segment. The formwork is suspended from the structure of the form traveller using thread bars.
Movable Scaffolding System (MSS)
This method consists of supporting the MSS on the final elements (piers and abutments), being also possible to use part of the already built bridge deck as a support. After the correct positioning of the formwork, transported by the MSS, the steel reinforcement is positioned in its interior. The concrete pouring on each span can be done in more than one phase. The MSS launching is done span by span, by hydraulic mechanisms, being completely autonomous. The range of partnerships that ConstruGomes is part of, allows it to be in the forefront regarding the adoption of new technologies, being the OPS system (Organic Prestressing System) the pinnacle.
Wing Travellers
A wing-traveller works in a similar way to the MSS and the form traveller machines, acting as a movable concrete mould to complete the full deck width. Concrete is poured into both sides of the machine at the same time, enabling workers to cast sections of the outer deck on each side of the viaduct with or without struts. Once the concrete has set, hydraulic jacks push the machine forward to the next position and the cycle is repeated. Both the overhead and the underslung WT are designed for the same purpose. The underslung wing traveller system can be adapted to different types of bridges, such as cable stayed structures, leaving no obstructions to temporary or permanent cables as well as giving the opportunity for an easy «back – launch» to its initial installation position. For projects where reinforcement is to be prefabricated, the underslung wing traveller is the perfect choice. The external formwork for this WT is supported from below, leaving no obstruction to place prefabricated bottom slab, web and top slab reinforcement.
Climbing, Selfclimbing and Traditional Formwork
Climbing formwork offers regular working cycles on high structures. It can be adapted to a wide range of requirements and is raised by supporting lifting means, such as cranes. The self-climbing formwork operates similarly to the form travellers since it allows the execution of pylons and/or vertical structures by increasing segments.
Propping and Shoring Systems
The shoring system is a temporary solution which aims to support the weight of the structure while the concrete is placed and compacted. Once the concrete structure acquires the necessary strength for self-support, the dismantling of the temporary falsework can be proceeded. ConstruGomes has used heavy propped formwork up to 40m of bridge span and height. These systems are normally limited to a height of 40m because of material limitations and safety considerations.
Tunnel Formwork
The Tunnel Carriage is a mobile structure for the execution of tunnels. Contemplates the shoring structure with the formwork that shapes the tunnel format. The formwork system for tunnels is composed of a lightweight mobile carriage that is used for both structure support and formwork. This is aimed at the civil engineering market, specifically the construction of mine tunnels of up to 1km long: underground stations, tunnel connections and hydraulic galleries.
Main projects with this solution