土质浅埋隧道CRD法施工中隔壁变形监测与分析

以天恒山隧道为工程依托,应用全站仪对边量测原理,对土质浅埋隧道CRD法施工中隔壁的变形情况进行现场监控量测,研究和分析了中隔壁的变形规律.研究结果表明:中隔壁的水平变形受CRD法前3部施工影响较大,第1部和第3部施工使中隔壁产生收敛变形,而第2部施工使中隔壁产生扩张变形；中隔壁的竖向变形受CRD法各部施工影响都较大,只有仰拱全部闭合后竖向变形才趋于缓和.

Monitoring and Analysis of the Deformation of the Middle Wall During the Construction of a Shallow Soil Tunnel by the CRD Method

Using the Tianhengshan Tunnel as a case study,site monitoring was performed and measurements were taken based on the RDM principle of total station to monitor the deformation of the middle wall of a shallow soil tunnel constructed by the CRD method.Furthermore,the deformation law of the middle wall was analyzed.The results show that the horizontal deformation of the middle wall is most affected by the first three steps of construction using the CRD method,convergence deformation occurs in the first and thir...