地下隧道施工对相邻建筑物及地表沉降的影响

The Effect Construction on the Settlements of Adjacent Building and Earth Surfaces of Underground Tunnel

地下工程或地下洞室的修建会使周围一定范围内的既有建筑物受到影响,对地面产生变形。本文基于黄土地层模型,采用邓肯-张的非线性弹性本构关系,考虑了隧道施工开挖过程中的支护、衬砌的影响,运用同济曙光分析软件,对黄土场地的地下隧洞埋深及其与邻近建筑物的距离对地表沉降的影响进行了数值分析,得出了有关规律性和有益的结论,可为黄土地区的地下工程建设提供一定的参考。

The construction of underground project or the underground tunnel will influence the subsiding of adjacent building on the earth surface. In this paper, the Duncan- Chang non- linear elasticity constitutive model is adopted and the influence of timbering and the lining in the process of underground tunnel excavation is considered, the influence of the depth of underground tunnel and the horizontal distance between the tunnel and the building on the settlement is analyzed. Some useful conclusion are gained. It can offer some theoretic reference to the construction of the underground engineering in loess areas.