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迄今的桥梁,每隔10年左右,须涂一次油漆,以防锈蚀。目前有一种无须涂装的被称为“耐候性钢”的桥梁,即使不涂刷油漆,也不会生锈,或生锈极少。可节省大量人力、物力。世界上这种桥梁日益增多。
So far the bridge, every 10 years or so, to be coated with a paint to prevent corrosion. There is currently a non-painted bridge known as “weatherable steel” that will not rust or rust even without paint. Can save a lot of manpower and material resources. This bridge in the world is growing.