97 BRIDGE Brussels, Belgium This project involves a bridge located on Chaussée de Bruxelles in Forest, Brussels. The bridge spans 39 m, has a width of 16 m, and stands at a height of 11 m. It crosses over four railway tracks and supports a roadway. The bridge comprises of four reinforced concrete arches supported by secant pile walls, which serve as immediate foundations. The passive abutment resultant resists the horizontal loads. In cases where the abutment requires wall displacement, the horizontal force decreases, reducing the required resistance. The primary challenge was considering the displacement of the pile caused by soil pressure. To address this, a nonlinear analysis of the pile support was conducted. Horizontal spring supports were placed on each pile at one-meter intervals. A nonlinear function was computed for each support, accounting for varying stiffness with depth and displacements experienced by the structure. This iterative process ensures accuracy. The nonlinear functions were created in SCIA Engineer following the method outlined in CUR 166, table BGT in DA 1/1. The soil is modeled using a spring model, with the soil reaction coefficient dependent on soil parameters. SCIA Engineer provides precise results that illustrate the structure’s response to applied forces. However, for detailed pile design, additional calculations using specific geotechnical software are necessary. ARCHITECT Tucrail OWNER Tucrail GENERAL CONTRACTOR Tucrail CONSTRUCTION PERIOD 2019 - ... ENGINEERING COMPANY TUC Rail Clément Kastelik Fonsnylaan 39, Brussel, Belgium www.tucrail.be CIVIL STRUCTURES 2
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