Tokyo Gate Bridge: Truss-Box Composite Structure

摘要

The Tokyo Port coastal highway project was planned for three reasons: to alleviate traffic congestion in the area surrounding the Port of Tokyo that resulted from increased cargo container activity, to secure smooth logistics and to reduce logistical costs. The Tokyo Gate Bridge is a 2,618 m-long steel bridge that constitutes one segment of the highway (Photo 1). Being located near Tokyo International Airport (Haneda), airspace regulations of 98.1 m is settled. Further, because the bridge spans the east fairway of the Port of Tokyo, it had to provide unobstructed passage space of 300 m in width and 54.6 m in height above water level. Accordingly, a truss bridge was selected because a suspension bridge or a cable-stayed bridge requiring main towers would be untenable.