Abstract：A series of 1g physical model tests are carried out to investigate the tunnelling effects on existing pipelines. A tunnel is excavated directly underneath the existing pipeline. The tunneling-induced pipeline deformation mechanism and the stress field around the pipeline are studied. In addition, three-dimensional discrete element back-analyses (PFC3D) are conducted to improve the understanding of soil-pipe interaction problem. Based on the measured and computed results, change of the tunneling-induced stress, displacement, shear strain and bending moment in the existing pipeline are analyzed. The findings in this study can give theoretical basis for the reinforcement design of pipelines.
王正兴, 缪林昌, 王冉冉, 王非, 王小龙. 砂土隧道施工对下卧管线影响的试验和数值模拟分析[J]. 岩土工程学报, 2014, 36(1): 182-188.
WANG Zheng-xing, MIAO Lin-chang, WANG Ran-ran, WANG Fei, WANG Xiao-long. Physical model tests and PFC3D modeling of soil-pipe interaction in sands during tunnelling. Chinese J. Geot. Eng., 2014, 36(1): 182-188.
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