摘要
以桥长和圆心角为参数建立了30个二等跨连续弯箱梁桥模型,拟合出跨中和支座处不同荷载单独作用时的控制截面角点上的正应力在所用应力中的比重随圆心角(或桥长)的关系曲线,并对这些自比重曲线进行详细的讨论,总结出各种荷载应力比重随二参数的变化规律,对工程设计提出建议和借鉴依据.
30 two-span curved box-girder bridge models were built taking bridge length and central angle as parameters. Stress ratio curves of different loads of corner points in control sections,such as sections in middle span and in support,were fitted to bridge length and central angle,and were discussed in detail;Rules about stress ratios were concluded,and advices were made for engineering design in the end.
出处
《河南科学》
2009年第11期1425-1428,共4页
Henan Science
基金
河南省教育厅自然科学研究计划项目(2009A560014)
关键词
弯箱梁桥
荷载应力
应力比重
圆心角
桥长
curved box-girder bridge
load stress
stress ratio
central angle
bridge length
