摘要
通过计算军用梁刚拱架在转体各阶段、拱肋混凝土分环分段各工况内力和位移分析,介绍了一种新型大跨度钢拱架的结构设计,拓展了六四式军用梁的又一新的使用领域,并结合石羊河大桥军用梁半钢拱架竖向转体及滑轮组和卷扬机配合使用的实施过程,探讨了有支架施工在水库、深沟峡谷中公路拱架施工的优越性。
This paper introduces the structural design of large span steel support in arch bridges with the calculation of internal forces and displacement of military arch support in vertical swiveling stages and concrete-casting stages,and also discusses the constructional process of semi-arched military beams support in Shiyanghe Bridge with the cooperation of pulley block and hoist,which enlarges the application of 64-type military beams.With the experience accumulated in the Shiyanghe Bridge,it also states the superiorities of the method of trestle construction used over reservoir,deep stream or valley.
出处
《交通科技》
2010年第5期22-25,共4页
Transportation Science & Technology
关键词
公路桥
拱桥
军用梁
大跨度拱架
竖直转体
highway bridge
arch bridge
military beams
large spanned arch support
vertical swivel
