摘要
以温福铁路昆阳特大桥为背景,分别建立全桥空间分析模型及横向框架模型。研究结果表明:连续梁拱组合桥箱梁横向应力顺桥向的变化成峰状,并且峰顶和峰谷处的横向应力绝对值随着向跨中靠近而逐渐减小;对于边跨无吊杆区域,刚性支承框架法计算结果能够包络全桥实体建模计算结果,验证了刚性支承框架法在无吊杆区域计算横向应力的合理性;对于中跨有吊杆区域,采用刚性支承框架法计算横向应力,横向框架宽度应取吊杆间距的1/3或以上。
A On the background of Kunyang grand bridge on Wenzhou Fuzhou railway line, a spatial analysis mod el and a transverse frame model were established, respectively. The results show that the longitudinal variation of transverse stress in box girder shows a peak distribution and a gradual decrease of its absolute value at peak and valley as result of it＇s close to rigid suDo mid span. Meanwhile, the solid modeling result can be incorporated to by the calculation frame method in terms of side span region without suspenders, which verifies its rea
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2013年第4期7-12,共6页
Journal of Railway Science and Engineering
基金
铁道部科技研究开发计划项目(2006G010-A)
关键词
铁路桥
连续梁拱组合桥
箱梁
框架
横向受力
railway bridge
continuous beam and arch combined bridge
box girder
frame
transverse force
