摘要
本文着重论述了大跨度拱梁组合体系桥梁在设计中的优化问题。由于拱梁组合体系桥梁可以从结构上分为拱肋、加劲梁、水平拉索等几个构件 ,因此分别讨论了其对整体结构的影响。此外 ,还讨论了水平拉索的安全系数取值问题 ,由于拉索的安全系数影响到其最终的横截面面积 。
This paper emphasizes on the optimization of key elements in an arch bridge. Because an arch beam bridge can be divided into arch ribs, stiffening girder, horizontal cable, etc., we discuss their influence to the whole structure separately. What′s more, we also discuss the safe factor of the horizontal cable. Influencing the section area of the horizontal cable, it is necessary to adopt appropriate safe factor in the design.
出处
《结构工程师》
2002年第4期5-10,共6页
Structural Engineers
关键词
大跨度拱桥
加劲梁
水平拉索
优化设计
arch rib, stiffening girder, horizontal cable, optimization
