论文部分内容阅读
城市中的双孔地铁隧道由于车站的布置,故都并排靠得很近修建,而且两条隧道是一个接一个进行掘进的,因此衬砌和地层内的应力受掘进顺序的影响,特别是软土中浅埋的双孔隧道。因此对双孔隧道的相容应力-变形的分析就必须考虑两孔隧道相继掘进的相互影响。本文介绍了用有限元法分析以盾构法掘进的以及用开挖加喷混凝土支护掘进的隧道中这些问题的结果。这些结果在图表中给出,它表明了与一个单孔隧道的分析相对应的、在应力及变形上的相对变化。这些结果表明可用单孔隧道的解来找出双孔隧道的解。
Due to the station layout, the two-way subway tunnels in the city are built side by side closely and the two tunnels are driven one after the other, so the stress in the lining and formation is affected by the tunneling sequence, especially the soft soil Medium shallow buried double tunnel. Therefore, the analysis of the compatible stress-deformation of two-hole tunnel must consider the mutual influence of two tunnels successively heading. This paper presents the results of finite element analysis of these problems in tunneling with shield tunneling and excavation with shotcrete support. These results are given in the chart, which shows the relative change in stress and deformation corresponding to the analysis of a single-hole tunnel. These results show that the solution of a two-hole tunnel can be found using the solution of a single-hole tunnel.