桥,指的是为了跨越天然或人工障碍物而修建的建筑物。它是架空的道路,它跨越河流、穿越山谷,以方便运输工具或行人在桥上畅通无阻,缩短路途。中国是桥的故乡,自古就有“桥的国度”之称,发展于隋,兴盛于宋。中国早在公元前50年(汉宣帝甘露四年)就建成了跨度达百米的铁索桥,而欧美直到17世纪尚未出现铁索桥。此外,中国不少现存的木桥、石桥和铁索桥,无论是样式还是力学原理、美学理念,都长时间保持世界领先水平,在桥梁发展史上占据重要地位,为世人所认可。 Bridge refers to buildings constructed to cross natural or artificial obstacles. It is an overhead road that straddles the river and through the valleys to ease the passage of vehicles and pedestrians on the bridge. China is the hometown of bridges. Since ancient times, China has been known as “the kingdom of bridges.” It developed in the Sui Dynasty and flourished in the Song Dynasty. As early as 50 BC in China (Han Xuan Emperor Manlu four years) built a span of 100 meters of the cable bridge, and Europe and the United States until the seventeenth century has not yet appeared Chain Bridge. In addition, many of China’s existing wooden bridges, stone bridges and cable-stayed bridges, both style and principle of mechanics and aesthetics, have maintained a leading position in the world for a long time, occupying an important position in the history of bridge development and are recognized by the world.