This article takes the Du'an Expressway project as an example and takes the Yanlang Bridge project as the background.The"steel pipe column+Bailey beam"bracket cast-in-place method is used to solve the problems of large span,high section,and large volume of large cantilever portal prestressed cover beams.At the same time,finite element analysis software is used to simulate the strength and stiffness of the bracket structure,and the equivalent weight preloading method of the bracket is adopted.The results indicate that the bracket system is safe,reliable,and economically feasible,which can provide a reference for bracket selection for similar projects.
关键词
大悬臂/预应力盖梁/支架/施工技术/有限元分析
Key words
large cantilever/pre stressing cap beam/bracket/construction technology/finite element analysis
维普
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