摘要
在对目前国内外盾构隧道衬砌结构设计中普遍采用的自由变形圆环法和弹性地基梁法进行比较分析后,针对盾构隧道下穿铁路,盾构隧道管片衬砌承受列车荷载引起的附加动应力进行了研究,提出了自由变形圆环法与弹性地基梁法相结合,基于弯矩与轴力转换系数的计算新方法计算承受偏应力的管片衬砌内力,同时对上海轨道交通线某下穿工点进行了算例分析。
On the basis of detailed analysis on free - form deformation ring method and elastic foundation beam method which are widely used in the shield tunnel lining design at present, a new segment lining internal force design method is put forward for calculating the moment and axis force converting coefficient by combining free - form deformation ring method and elastic foundation beam method with considering the deviatoric dynamic stress caused by train load on segment lining. As an example, the calculation of the lining of shield tunnel passing under-across the existing main railway line in Shanghai metro network is discussed.
出处
《地下空间与工程学报》
CSCD
2008年第2期290-294,共5页
Chinese Journal of Underground Space and Engineering
关键词
铁路干线
盾构隧道
自由变形圆环法
弹性地基梁法
内力
main railway line
shield tunnel
free - form deformation ring method
elastic foundation beam method
internal force
