PRECAST ELEMENTS FOR SEGMENTAL BRIDGE CONSTRUCTION OF THE BANG NA EXPRESSWAY, BANGKOK

摘要

The Bang Na Expressway is a 55 km (34 miles) long viaduct in Bangkok, Thailand. With its recent completion in March 2000, it became the longest bridge in the world. The total deck area consists of 1,900,000 m~2 (20,400,000 sq ft). The superstructure is entirely corn-posed of precast concrete segments with external post-tensioning and dry joints. The core component of the structure is the mainline segment with a wingspan of 27.2 m (89 ft). The total cost for planning, designing, constructing and financing the project was more than dollar1 billion.