摘要
利用大型有限元通用软件MIDAS对40m跨小箱梁桥建立实体单元模型和虚拟横梁单元模型,针对不同虚横梁间距模型分别计算了6种荷载工况下的跨中竖向位移,并与实体单元模型跨中竖向位移相比较,得出虚横梁间距为1/10～1/8跨长时,与实体单元的误差最小,建模时依据该结论取虚横梁间距.此结论也可以供其他跨径小箱梁桥建模计算时参考.
The solid element model and the virtual beam element model of 40 m small box-girder bridge are builded by using finite element software MIDAS.The midspan vertical displacement of the bridge were calculated for six kinds of load conditions of the different virtual beam spacing models,and comparing with the midspan vertical displacement of the solid element model.The deviation between them is the smallest,when the virtual beam spacing is 1/10～1/8 span.Other long-span small box-girder bridge can reference the conclusion.
出处
《河南科学》
2009年第10期1289-1291,共3页
Henan Science
基金
河南省杰出人才计划项目(084200510003)
关键词
小箱梁桥
虚横梁间距
研究
small box-girder bridge
virtual beam spacing
research
