大坡度小半径地铁盾构管片的受力性状分析

Analysis of Force Characteristics of Shield Tunnel Segments with Large Slope and Small Radius

以某地铁出入线为工程实例,对大坡度小曲率半径区间盾构施工模拟及管片受力情况进行数值模拟,结果表明:地铁盾构大坡度小半径段施工,土体变型较小,管片整体受压,且受力满足材料抗压能力,并针对该段盾构施工提出建议,可供今后相似工程施工参考。

Taking a subway access line as an engineering example,the numerical simulation of the shield construction and the force of the segment on the large curvature and small curvature radius are carried out.The results show that the construction of the subway shield has a small radius and a small radius section,the whole of the tube is compressed,and the force is sufficient to meet the pressure resistance of the material.Suggestions for the construction of the shield are put forward,which can be used as a reference for similar engineering construction in the future.