【摘要】 从设计、施工以及养护诸方面探讨了大跨径钢管混凝土拱桥建设中需注意的问题。设计方面包括拱轴线的选择、拱脚段负弯矩的处理、横撑设置与稳定性、桥道系的选择等;施工养护方面包括钢管焊接、缆索吊装与斜拉扣挂、泵送混凝土与灌注次序、施工控制与检测、防腐与换索等。更多还原

【Abstract】 Some noticeable problems in design and construction o f long span concrete filled steel tubular arch bridges are discussed.The design techniques such as optimization of arch axis,arrangement of lateral bracing a re studied in detail.Some measures of construction and mainte-nance about we lded steel pipe,hoist cable system,pumped concrete,construction control,and steel corrosion,etc.are also presented.更多还原