随着我国经济改革的深入,很多的公路桥梁等公共基础设施的建设都得到了很大的提高,在桥梁方面我国古代就有很深入的研究了,但是由于当时材料的限制,当时的桥梁大多是采用石拱桥的设计,而科技和经济飞速发展的今天,石拱桥已经远远不能满足现代人对桥的要求,尤其是一些立交桥、跨江很长的大桥等,无论在强度和工程上,新兴的钢筋混凝土的组合都比传统的石拱桥好很多。 With the deepening of the economic reform in our country, many public infrastructures such as roads and bridges have been greatly improved in the construction of bridges. As far as bridges are concerned, ancient China has conducted in-depth studies. However, due to the limitation of materials at the time, most of the bridges at the time Is the design of stone arch bridge, and the rapid development of science and technology and today’s economy, stone arch bridge far can not meet the modern requirements of the bridge, in particular, some overpasses, bridges across the river is very long, both in terms of strength and engineering, Emerging combinations of reinforced concrete are much better than traditional stone arch bridges.