Preventive Maintenance and Environmental Protection of Highway Bridges
A large number of in-service highway bridges have varying degrees of diseases or trends in disease occurrence and development,threatening the structural safety of bridges and the high-quality development of China's highway transportation industry.It is urgent to layout preventive maintenance.This article elaborates on the overall steps,key issues,key technologies and environmental protection measures of bridge preventive maintenance based on the Jingping Expressway preventive maintenance project,and provides a detailed discussion on the construction of jacking and bearing replacement.From the perspective of the entire life cycle of bridges,preventive maintenance has a good effect on improving the durability of bridge structures and extending the service life of bridges,under the premise of low economic and environmental costs.