The conventional continuous beam structure adopts symmetrical design,and the ratio of side to middle span is reasonable.When the bridge span arrangement is limited by terrain or other factors,the asymmetric design is an effective solution.The large span asymmetric continuous beam has the characteristics of unreasonable structural stress,difficulty in bundling,easy to empty the small side span end support,and high construction control requirements.In this paper,the main bridge across the South-to-North Water Diversion canal adopts(52.5+130+75)m asymmetric vari-able section suspension continuous beam as an example,through the establishment of model calculation and analysis,the most unfavorable stress state is studied,and the existing problems of this type of bridge are solved by adopting effective design methods and construction measures,which can provide reference for the design of similar Bridges.
关键词
非对称/小边跨/悬浇连续梁/悬臂施工/配重混凝土
Key words
asymmetric/small side span/suspension cast continuous beam/cantilever construction/counter-weight concrete
维普
万方数据