Structural Concrete Issue 04/15

Cover Story: The 2.815 m long, four-lane Laguna Bridge, also known as the Anita Garibaldi Bridge, will be Brazil’s third longest bridge and will significantly improve the transport connection from north to south to other South American countries.

In October 2012, work started on this 52 span bridge that includes a 400 m long main span stay cable bridge. Protendidos DYWIDAG supplied the following products for this project 30.600 m of ∅32 mm DYWIDAG Bar Tendons and 860 m of ∅36 mm DYWIDAG Bar Tendons with Accessories. Diameter 32 mm DYWIDAG Bar Tendons were used both for the production of the precast segments and for widening the bridge deck using laterally mounted precast cantilever elements. (© DSI, see pp. A5f.)

Table of Contents:

• Bella Sky Hotel – precast concrete design challenges
• Birmingham Gateway: structural assessment and strengthening
• Integral bridges: soil-structure interaction tests for transition slabs
• Behaviour of joints between high-strength columns and weaker slabs
• Toughness of lightweight foamed concrete with hybrid fibres
• Blast resistance of concrete reinforced with various fibres
• fib MC2010 shear check for FRC without rebars
• RC beams shear analysis with softened membrane model
• Fixed-end rotations of RC members at yielding/ultimate
• Ductility of RC beams designed to fib MC2010
• Early-age performance control in immersed tunnels
• Tests for optimum shear load transfer in segmental lining joints

Recommended Reading:

• fib Model Code for Concrete Structures 2010
• Cable-Stayed Bridges