This article describes the use of moving formwork in constructing the 60mwide Saadiyat Bridge in Abu Dhabi. The bridge to Abu Dhabi will carry tencar lanes and two railway tracks. The main bridge will be supported by two sets of triple identical piers inclined by 27.45 degrees. The formwork and scaffolding consist of two sets of side formwork, a forward-inclined element with integrated working platforms and a reverse-inclined raised unit. The high concreting loads are carried on the reverse-inclined unit. The modular structure and metric grid dimensions make it possible to adapt theload-bearing construction to the forces transferred through the raised formwork and heavy-duty spindles, without coupling the scaffold tubes. The individual bridge supports are constructed alternatively in four climbing steps with the frame construction being pulled outwards on the steel girders. Time-saving connection enables extension units to be adjusted to the required height using the spindles. Bringing formwork and scaffolding efficiently to the next cycle enables 48 segments to be constructed with only four sets of formwork.
Samenvatting