【摘 要】
：
(八)拱桥向轻型化发展至今拱桥仍是我国桥梁的主要结构型式,约占全部桥梁的60％,继石拱桥、混凝土(肋)板拱,箱形拱、双曲拱之后,刚架拱、扁壳拱,桁架拱如雨后春笋,普遍推广。
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(八)拱桥向轻型化发展至今拱桥仍是我国桥梁的主要结构型式,约占全部桥梁的60％,继石拱桥、混凝土(肋)板拱,箱形拱、双曲拱之后,刚架拱、扁壳拱,桁架拱如雨后春笋,普遍推广。其中刚架拱乃吸取了斜腿刚架之优,从传统的拱桥中脱颖而出,它具有较合理的力学性能,其结构受力特征与斜张桥有异曲同工之妙,前者是用次腿由下至上支撑承重上弦
(VIII) Development of Arch Bridge to Lightweight Arch bridge is still the main type of bridge in our country, accounting for about 60% of all bridges. Following stone arch bridge, concrete arch rib, box arch and double arch arch, , Flat shell arch, truss arch springing, widespread. Among them, the rigid frame arch absorbs the superiority of the slant-legged frame and stands out from the traditional arch bridge. It has more reasonable mechanical properties. Its structural force characteristics are similar to that of Diao-Zhangqiao. Ultimate support bearing weight winding
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