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一、钢管混凝土结构的发展及现状世界上最早修建的钢管混凝土拱桥为1937年前苏联分别修建的跨度101m的涅瓦河下承式拱桥和跨度140m的依谢季河上承式铁路拱桥。此
I. Development and Status of CFST Structure The earliest CFST arch bridge constructed in the world is the Neva River under-span arch bridge with a span of 101m and the over-arch Xijie River Arch Bridge with a span of 140m constructed by the Soviet Union in 1937 respectively. this