Innovation and Application of Support Design and Anti-support Preloading Technology for the 0#Section of Large-span Continuous Beams
This article explores the innovation and application of the support design and anti support preloading technology for the 0#section of the main span continuous beam of the newly built Mamoko 2 Extra Large Bridge on the railway.In response to the problems of complex design,high cost,and non reusability of traditional 0#block brackets,this paper proposes a new type of prefabricated bracket scheme.Through modular design and flexible and compatible construction,this scheme achieves rapid installation and disassembly of brackets,significantly reducing construction costs and improving economic benefits.At the same time,this article also introduces the application of the anti support preloading method,which uses pre embedded steel strands and installed jacks to perform anti support preloading and tensioning on the bracket,simulates actual construction loads,verifies the stability,stiffness,and strength of the bracket,and ensures construction safety.The research results indicate that the new bracket scheme and anti support preloading technology have significant advantages in the construction of large-span continuous beams,providing useful references for similar projects.
continuous beam 0#sectionmodular design of bracketanti pivot preloading technologykey construction technologies
万方数据
维普
