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本文以哈尔滨保健路隧道工程为背景,采用有限元软件,根据工程实际条件,建立二维模型对隧道开挖步序进行有限元模拟分析,比较了采用不同的施工工序对隧道结构的影响。同时,根据施工中反馈的监测数据,对其进行整合和态势分析,得到了软土地层浅埋暗挖双连拱隧道在施工开挖中的地表沉降、拱顶沉降等实际数据,进一步获取了围岩稳定性、支护效果的信息和经验。
In this paper, based on the Harbin Health Road tunnel project, finite element software was used to establish a two-dimensional model of the tunnel excavation process by finite element analysis according to the actual project conditions. The impact of different construction procedures on the tunnel structure was compared. At the same time, based on the monitoring data fed back during construction, the data are integrated and analyzed. The actual data of surface subsidence and vault settlement in the excavation of double-arch tunnel with shallow burying and soft excavation are obtained. Surrounding rock stability, support effect of the information and experience.