随着世界经济的快速发展,大跨径桥梁的建设在二十世纪世纪末进入了一个高潮时期。目前的桥梁技术已经能较好地解决现存问题,但是桥梁跨度不断增大,并且向着更长、更大和更柔方向发展,为了保证桥梁的可靠性、耐久性、行车舒适性和施工简易性,还有大量的工作要做。 With the rapid development of the world economy, the construction of a long-span bridge has entered a climax at the end of the twentieth century. The current bridge technology has been able to better solve the existing problems, but the bridge span continues to grow, and toward a longer, larger and more flexible direction, in order to ensure bridge reliability, durability, driving comfort and ease of construction, There is still a lot of work to do.