【作者】 涂忠仁；

【Author】 TU Zhong-ren~(1,2) (1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China; 2.Department of River&ocean Engineering,Chongqing Jiaotong University, Chongqing 400074,China)

【机构】 同济大学地下建筑与工程系； 重庆交通学院河海系；

【摘要】 按照荷载-结构法思想,合理考虑围岩与衬砌一道工作、分承荷载的能力能够充分体现设计时安全与经济应相互协调的理念,其中围岩抗力系数值的确定尤为关键。本文基于统一强度理论推导得出的围岩抗力系数计算公式,可以考虑中间主应力的影响,并且文中公式中的参数取一些其他值可以得出其他围岩条件或者其他强度理论条件下的围岩抗力系数计算公式,可适用于各种岩体条件,具有较强实用价值。更多还原

【Abstract】 According to the viewpoint of load structure method,the wall rock together with the lining can bear the load caused by the surrounding rock.The value of rock resistant coefficient is a key parameter in determination of the capacity of the wall rock.Based on the unified strength theory,the formula for calculating rock resistant coefficient is given in the paper,which can be adopted to consider the intermediate principle stress effect and to obtain rock resistant coefficient in other situations or strength thoeries simply by assumed the parameter in the formula.So the formula can be applied in kinds of rock conditions.更多还原