基床式大直径圆筒土压力数值分析

摘要

By using the ABAQUS software, the paper analyzed the soil pressure of base bed type large diameter cylinder, and mainly analyzed the change trend of the pressure of the surrounding section of large diameter cylinder. Results showed that the soil pressure of diameter cylinder that located in the middle position was much smaller than that in opposite sides. For the soil pressure before cylinder, three cylinders had a similar situation. The peak of soil pressure did not appear in the bottom of cylinder, but there is a certain distance to the bottom, which proved the existence of soil arching effect under the condition of laree diameter cylinder structure row.%采用ABAQUS软件对基床式大直径圆筒结构土压力进行分析,主要分析大直径圆筒周围截面上的应力变化趋势.结果显示位于中间位置圆筒的土压力相对两边的圆筒土压力要小很多.对于筒前土压力,三个圆筒有相似的状况,土压力峰值不是出现在筒底,而是距筒底有一定的距离,证实了大直径圆筒结构排筒状况下土拱效应的存在.