e-mosty March 2019 Long Span and Multiple Span Bridges - Page 13

Figures 13 and 14: Wind tunnel testing PROJECT BENEFITS This has resulted in specific design challenges and detailing of reinforcement, e.g. diagonal bars in some walls and slabs. The bridge will provide direct access from Europe to the south-western part of Turkey, while boosting economic development in the western region. SEISMIC ANALYSIS The bridge is located relatively close to the North Anatolian Fault but does not cross it directly. The design criteria consider 3 potential events:    By providing a direct link to the south-west region, the bridge will also reduce traffic congestion in Istanbul, which witnesses high-traffic inflow from Europe. Functional Evaluation Earthquake (FEE) – 125 year return period Safety Evaluation Earthquake (SEE) – 975 year return and No Collapse Earthquake (NCE) – 2475 year return The project will also help in improving traffic safety by reducing the number of intersections, which are a major cause for accidents. Source: The analysis applies displacements in three directions and these are applied at the six main supports – two anchorages, two end supports and . two towers. Seven sets of time-displacement actions are applied to the dynamic finite element model to understand the non-linear element behaviour. This included the influence of using hydraulic buffers at the towers, wind bearings and soil-structure interaction. www.1915canakkale.com Presentation “1915 Canakkale Bridge design – meeting the challenge”. COWI. Istanbul Bridge Conference, 5 – 6 November 2018 Figure 15: Testing of various profiles 1/2019