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钢桥在它仅仅两百多年的发展史中,在各方面都取得了重大的突破。自19世纪中叶,工程界逐步掌握了静定钢桁架梁的内力分析方法;到20世纪初期,超静定承重结构的桥梁设计已经开始普遍运用结构力学的弹性内力分析方法,这使创造长跨纪录的桥梁工作取得有力的科学依据;20世纪中期至90年代,城市桥和公路桥开始大量修建,传统桥梁的施工方法有了很大改进,而且广泛采用了大量新桥型,桥梁工程由此取得前所未有的成就;如今,计算机技术的发展为桥梁结构的优化设计提供了平台,可以对即将兴建的桥梁进行仿真实验,使不同性能的材料可将优势发挥到极致。
Steel Bridge has made major breakthroughs in all aspects in its history of just over two hundred years. Since the mid-19th century, the engineering community has gradually grasped the method of analyzing the internal force of statically-determinate steel truss girders. By the early 20th century, the bridge design of statically indeterminate structures has begun to use structural mechanics of elastic internal force analysis, Record bridge work to obtain a strong scientific basis; from the mid-20th century to the 90’s, the city bridge and highway bridge began to build a lot of traditional bridge construction methods have been greatly improved, and the extensive use of a large number of new bridge type bridge engineering Achieve unprecedented achievements; Today, the development of computer technology for the optimal design of the bridge structure provides a platform for simulation of the upcoming bridge simulation, the performance of different materials can maximize the advantages.