CONCRETE SLAB REPLACEMENT OF EXPRESSWAY ROAD BRIDGE IN JAPAN

摘要

This paper describes the current state of maintenance and counter measures for expressways, which are an important infrastructure in Japan. The main measure taken in the long-term maintenance of expressway bridge structures is the replacement of damaged RC slabs. The decision to implement the slab replacement project was made based on an examination of the current status of RC slab maintenance of bridges which have been in service for some 50 years. Then, the concept of the renewal project and the method of implementing the renewal work are explained, and prospects and counter measures for future issues are described.