跨座式单轨盾构隧道管片厚度研究

Study on segment thickness in tunnel of straddle type monorail shield

跨座式单轨盾构隧道因管片设置轨道梁,导致管片受力特性较普通管片发生变化。文章基于相关条文、规范要求及相关工程地质特征,先拟定出管片结构基本设计参数,再采用数值分析方法对多种工况下管片受力变形规律进行分析,最后根据计算分析结果确定管片厚度。

The mechanical features of the segments of the straddle monorail shield tunnel are changed compared with those of the ordinary segments due to the installation of track girders at the segments.Based on the relevant provisions,specifications and related engineering geological characteristics,the basic design parameters of segment structure are worked out,and furthermore the deformation patterns of segment under various working conditions are analyzed by numerical analysis method.In the final part,this paper determines the thickness of segment based on the results of calculation and analysis.