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桥梁是道路的组成部分。古代桥梁在17世纪以前,一般是用木、石材料建造的,直到公元19世纪,石头和木材一直是最重要的桥梁建筑材料。公元前6世纪巴比伦人开始用柏木和松木建造桥梁,罗马人开始用石头和混凝土建造拱桥。工业化开始后,1779年,世界上第一座铁桥Ironbridge出现在英国。随着桥梁建筑材料的进一步发展,锻铁这种具有更高抗拉强度的材料开始使用,大跨
The bridge is an integral part of the road. Before the seventeenth century, ancient bridges were generally constructed of wood and stone materials. Until the 19th century, stone and timber were the most important bridge building materials. The Babylonians began building bridges with cypress and pine trees in the sixth century BC, and the Romans started to build the arch bridge with stones and concrete. After industrialization began in 1779, the world’s first Ironbridge Ironbridge appeared in the United Kingdom. With the further development of bridge construction materials, wrought iron with higher tensile strength of the material began to use, large span