Study On The Key Technology In Construction For Pre-stressed Concrete Continuous Rigid Frame Bridge With Long Span And High Pier

In recent years, with the rapid development of traffic in China, the need to build large-span bridges to cross rivers become more. In recent years, PC continuous rigid frame bridges emerged as the times are required and was developed rapidly. There are no other expansion joints except for those at the two ends of the continuous rigid frame bridge, this kind of bridge can satisfy the requirement of stress and it has a number of structural features, such as, smooth and comfortable for driving, excellent structural integrity, capable of anti-seismic, strong carrying capacity, short time for construction. Therefore, it account for more and more proportion of the bridges which have been built or are under construction in city and countryside.In this paper, firstly, it analyzes the developing tendency of the continuous rigid frame bridge at home and abroad, and then shows a lot of specific researches on key technology under construction for large-span continuous rigid frame bridge.Based on the practical engineering, this article lists lots of studies on key technology for large-span continuous rigid frame bridge under construction. It takes the turnover form construction technology for the high pier and adopts cantilever construction method for the main girder to make the whole bridge closed smoothly, consequently complete the construction control of the subject. The construction control plan supply reference for the construction of similar bridges to be built.