摘要
针对上海轨道交通明珠线二期某地铁车站,提出采用空间梁-板单元模型分析车站端头井在施工过程中的受力和变形,并与传统的平面简化模型计算结果进行比较.计算结果显示:对于端头井墙体结构,两种方法计算得到的内力、变形和弯矩分布规律基本一致;对端头井上、下框架梁结构,采用空间梁-板单元模型计算,其内力变化较大,端头井空间效应显著,且可避免平面简化模型计算中框架梁出现轴向拉力这种失真现象.最后,建议采用空间梁-板单元模型分析地铁车站端头井结构.
The model of beam-plate element is proposed for analysis of the inner foree and deformation of end well for a station to be constructed in the second phase of the rail transit Pear line of Shanghai. The result is compared with that of the plane simplified model. The calculated results derived from the above two methods show that the inner force, deformation and distribution laws of moment in the end well wall accord well with each other. But when the model of beam-plate element is used, change of the inner force value in the upper and down framed beam is big. The space effect of the end well is obvious, and the distortion phenomenon of tension beam that occurs in calculation based on plane simplified model can be avoided. In the end, model of beam-plate element is suggested for analysis of end well of metro station.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期621-625,共5页
Journal of Tongji University:Natural Science
关键词
地铁车站
端头井
梁-板单元模型
平面简化模型
metro station
end well
model of beam-plate element
model of plane simplified
