在国外,早在40多年前曾使用铝合金材料修复桥梁和建筑新桥。美国的纽约于1946年建成的第一座铝桥,是跨径为30.5m的铁路板梁桥。1950年世界上第一座长跨径公路铝桥在加拿大阿尔维达Saguanag河上建成,其跨径长88.45m,可承受20t的卡车荷载或12t平板车上装有50t重的变压器并由18t重的 Abroad, as early as 40 years ago, the use of aluminum alloy materials to repair bridges and bridges. The first aluminum bridge built in 1946 in New York City of the United States is a railway bridge with a span of 30.5 meters. The world’s first long-span highway bridge built in 1950 on the Saguanag River in Alvada, Canada, spanning a length of 88.45m and capable of supporting a 20t truck load or a 12t flatbed with a 50t transformer and weighing 18t