Assessment and Retrofit of the Bridge over Kouris River, Cyprus
- 1 ArGEnCo Department, University of Liege, Liege, Belgium
- 2 Maraveas & Associates, P.C., Athens, Greece
Abstract
The main objective of the present study is the assessment and retrofit of an existing road bridge that is located in Cyprus over the river Kouris. In particular the study concerns in a road bridge with seven spans of 10.5 m + 5 * 12.6 m + 10.5 m, a cross section width of 7.10 m and a 5 m piers height that was constructed in the early 50’s. The structural system of the bridge comprises of cast in situ reinforced concrete T-beams and slab deck that is simply supported on masonry piers. According to the new urban plan to design the bridge should now accommodate two lanes per direction, a pedestrian walkway and a cycling lane with total cross section width of new deck 15.60 m. The deck of the bridge widened using for aesthetic reasons the same cross section type and the new T-Beams and slab deck connected monolithically to the existing one. The existing part of the deck was strengthened with reinforced concrete jacketing due to inadequacy in shear resistance. Major challenge of the project posed the existing masonry pier layout that was insufficient to carry the new design seismic forces. New piers, founded on piles, were designed adjacent to the existing piers in order to support the new widened part of the bridge, and also to bear all the horizontal loads arising from the masses of the total deck. Sliding bearings (free movement) placed in the part of the bridge over the existing piers and elastomeric bearings with movement only in the longitudinal direction placed in the new piers.
- British Standard (2009) BS EN 12504-1—Testing Concrete in Structures. Cored Specimens. Taking, Examining and Testing in Compression. BSI Group, London.
- International Organization for Standardization (2009) ISO 6892-1, Metallic Materials—Tensile Testing—Part 1: Method of Test at Room Temperature. International Organization for Standardization, Geneva.
- European Committee for Standardization (2002) Eurocode 1: Actions on Structures-Part 1-1: Densities, Self-Weight, Imposed Loads for Buildings. European Committee for Standardization, Brussels.
- European Committee for Standardization (2003) Eurocode 1: Actions on Structures—Part 2: Traffic Loads on Bridges, European Standard EN 1991-2. European Committee for Standardization, Brussels, Belgium.
- European Committee for Standardization (2005) Eurocode 8: Design of Structures for Earthquake Resistance—Part 2: Bridges, European Standard EN 1998-2. European Committee for Standardization, Brussels.
- Bentley Systems Incorporated (2002) RM Bridge V8i 08.10.03.02 Design Software. Bentley Systems Incorporated, California.
- European Committee for Standardization (2005) Eurocode 2: Design of Concrete Structures. European Committee for Standardization, Brussels.
- Highways Agency (2001) BD 44/95—Design Manual for Roads and Bridges Volume 3, Section 4, Part 14—The Assessment of Concrete Highway Bridges and Structures. Highways Agency, Guildford.
- Highways Agency (2001) BD 21/01—Design Manual for Roads and Bridges Volume 3, Section 4, Part 3—The Assessment of Highway Bridges And Structures.
- European Committee for Standardization (2005) Eurocode 6: Design of Masonry Structures-Part 1—General Rules for Reinforced and Unreinforced Masonry Structures, European Standard EN 1996-1. European Committee for Standardization, Brussels.