Additions to Contingency Plan for Enhancing Secureness of Weathering Steel Structures

摘要

The purpose of this research is to enhance the service life of weathering steel bridges by preparing a contingency plan. So far a risk-based design and maintenance system using a computerized corrosion prediction method [2, 3], visual as well as instrumental rust monitoring methods [4, 5], etc. has been developed. As the third stage of this project, additional contingency tools and agents were developed for repair painting of anomalously rusted parts. Unlike organic or inorganic materials, weathering steels do not deteriorate internally. Thus the service life of weathering steel bridges can be prolonged to a large extent without difficulties, since handling of risk based maintenance system for weathering steel structures has become much easier than ever.