考虑土拱效应的大圆筒外壁土压力计算方法  

Calculation method of earth pressure around large cylinders considering soil arch effect

作　　者：梁虹[1] 鲁子爱[1] 丁国莹[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水运工程》2015年第5期197-201,220,共6页Port & Waterway Engineering

摘　　要：在考虑土拱效应的基础上,重新定义了大圆筒结构土压力计算的侧土压力系数,并提出了计算大圆筒结构外壁土压力的新公式。该公式充分考虑了影响土压力的各因素,如剪切力、内摩擦角、筒土摩擦角等。通过与试验结果比较可知,公式与实测值符合较好。Considering the soil arch effect, we redefine the coefficient of lateral earth pressure acting on the cylinder structure and propose a new formula of earth pressure around the circle of large cylinders. The new formula takes full account of factors that affect the soil pressure, such as the shear stress, internal friction angle and tube soil friction angle. The comparison with experimental results show that the proposed method is in good agreement with the measured values.

关 键 词：土拱效应 大圆筒结构 土压力 侧土压力系数 

分 类 号：TU432[建筑科学—岩土工程]