Long Side Span Long Prestressed Concrete Continuous Rigid Frame Construction Key Technology Research

Currently, the construction of domestic bridges, and gradually set up by the transfer ofland to some cross-river, sea project, even some even island project construction, Multi-span,long prestressed concrete continuous rigid frame bridge with their own unique advantages,applications become more widespread and forms. Some limitations due to terrain or socialenvironment, and had to choose a large side span, long linked structure by design. The studyof this kind of domestic unconventional bridge is less and not enough. And "Highway BridgeDesign universal norms" are also not explicitly given for some control conditions. So it isnecessary for the long side span prestressed continuous rigid frame bridge, the design andconstruction of key technology research. So it is necessary for the long side span prestressedcontinuous rigid frame bridge design and construction of key technology research.In this paper, the research results at home and abroad to learn the premise of the system,combined with Vice bridge construction taohuayu Yellow River Bridge in Zhengzhou, Byforce of key performance and social structures were analyzed, a clear long side span castsegment best design, The research results can be used in a similar bridge girder design; Underthe Bridge by the state, except when the closure order, force and linear structures wereanalyzed, Clear conventional bridge closure plan and comparative analysis of the advantagesand disadvantages of various programs，The research process and the results can be used formulti-span prestressed continuous rigid frame bridge closure；The key structural stability ofthe construction phase were compared，The research results can be oriented constructionprocess of the bridge to provide a reference, but can also enrich and improve the performanceand stability of basic research structure.Research results of this project has been applied in taohuayu Yellow River Bridge Designand Construction. For the construction cost savings, schedule requirements, the constructionprocess stability and performance into a bridge effect is very significant. TaohuayuZhengzhou Yellow River Bridge and other similar bridges can provide reference andguidance.