浅谈我国公路桥梁的发展介绍.doc

摘 要 我国山川众多、江河纵横，是个桥梁大国，在古代无论是建桥技术，还是桥梁数量都处于世界领先地位。千百年来，桥梁早已成为人们社会生活中不可缺少的组成部分。随着我国经济发展，材料、机械、设备工业相应发展，我国桥梁的技术也得到了飞速发展，使我国建桥水平已跃身于世界先进行列。桥梁事业必将迎来更大规模的建设高潮。目前计算机技术的发展为桥梁结构的优化设计创造了条件，使桥梁设计人员可以对即将兴建的桥梁进行仿真分析，使不同材料的性能发挥到极致；结构动力学理论的发展与完善。中国桥梁界专家们曾预言；21世纪世界桥梁将实现新型、大跨、轻质、灵敏和美观的国际桥梁发展新目标。公路桥梁是交通运输中的纽带，起着无与伦比的沟通作用同时桥梁在满足安全、适用的同时对桥梁的美学和景观也提出了更高的要求,桥梁景观在桥梁发展中叶越来越被重视。 关键Our mountains and rivers, a big bridge, in ancient times, or whether bridge-building technology bridge quantity is a leading position in the world. For thousands of years, people have become social life bridge indispensable component. with Chinas economic development, materials, machinery, equipment, industrial development, our Bridges of corresponding technique also got rapid development, China has jumped at the advanced level in the body. Bridge career will have more large-scale construction upsurge. currently the development of computer technology for optimization design of bridge structure, create conditions for the bridge designers can build Bridges is simulated, the performance of different materials to acme, Structural dynamics theory of development and perfection. Chinas bridge world experts predicted, the 21st century world bridge will achieve new, large span lightweight, sensitive and beautiful, and the development of new target international bridge. highway bridge is the bond, transportation and communication plays a role of bridge and unparalleled in safety, suitable for bridge aesthetics and landscape also put forward higher request, in the middle of development of bridge landscape bridge is taken seriously more and more. Key words：Bridge, developmenttechnical，Landscape 目 录 1 引言 4 2 我国公路桥梁的发展趋势 4 2.1跨径不断增大 4 2.2桥型不断丰富 4 2.3结构不断轻型化 5 3常见公路桥型的发展 5 3.1板式桥的发展 5 3.2 梁式桥的发展 6 3.2.1简支T型梁桥 6 3.2.2连续箱形梁桥 6 3.2.3连续刚构桥 7 3.3 斜拉桥的发展 7 3.4悬索桥的发展 8 4桥梁的景观与环境保护 10 4.1桥梁的景观 10 4.2桥梁发展与环境保护 10 5桥梁发展中新材料的应用 11 6 结语 12 7参考文献 13 致 谢 14 1引言 我国公路建设事业迅猛发展随着经济的发展、综合国力增强，我国的建筑材料、设备、建筑技术都有了较快发展。特别是电子计算技术的广泛应用，为广