【摘要】 结合重庆某开发建设项目,采用2D-σ有限元结构分析程序,具体分析了4种典型分析计算状态下地下隧道围岩与地表构筑物地基中的应力演变规律。分析结果表明,地下隧道与地表构筑物之间将可能产生相互影响,其应力分布曲线在隧道附近都将产生较明显的突变,且将在隧道围岩中发生相对应力集中现象,在隧道侧墙处出现较大压应力,在隧道拱顶处将出现拉应力,地表构筑物地基对地表上部荷载的传递是向下逐渐扩散的,进而探讨了地下隧道与地表构筑物之间的相互影响问题。更多还原

【Abstract】 By taking account of a building project in Chongqing, the authors adopt a structural analysis program 2D-σ to analyze evolvement regulation of the stress in the rock-mass related to a tunnel and a upper structure in four kinds of typical building step. The result indicates that interaction may exists between the tunnel and the upper structure; and the stress distribution come into being a break near the tunnel; and the tunnel side wall is compressed; and the tunnel arch is tensioned. The result will provide the references for the tunnel and the upper structure.更多还原