中文摘要：

结合水工压力隧洞衬砌开裂以后围岩-衬砌混凝土-钢筋联合作用的实际性状,借助于非线性有限元程序,对围岩与衬砌（混凝土和钢筋）联合作用和材料性态进行模拟,建立起精细的、高度仿真的二维（平面应变）数值模型。经过数值分析,得到了在满足规范要求且经济合理的配筋量条件下衬砌与围岩的荷载分担比、裂缝宽度和裂缝分布规律、混凝土的应力分布规律、钢筋的应力分布规律。对衬砌与围岩发生相对滑动以及围岩参数变化对荷载分担比的影响进行了分析,发现衬砌与围岩出现相对滑动时,需要增加配筋量;围岩参数变化时,对相邻裂缝间距（裂缝条数）影响很大,衬砌的荷载分担比略有上升趋势。

英文摘要：

In combining with actual behaviors of united effects of surrounding rock-lined concrete-reinforcement after the occurrence of hydraulic engineering pressure tunnel lined cracks,and by means of non-linear finite element program,the united effects and material behaviors of surrounding rock an lining（concrete and steel bars） are simulated,and a fine,high-degree simulation 2-dimention（plain strain） numerical model is established.Through numerical analysis,the load sharing ratio between the lining and surrounding rock,the crack width and crack distribution laws,the concrete stress distribution laws,and the reinforced stress distribution laws are obtained under the conditions of satisfying the specification requirements and the economically rational reinforcement.The impact of the relative sliding occurred between lining and surrounding rock as well as surrounding rock parameter variations upon loading sharing ratio are analyzed.It has been found that when the relative sliding occurs between lining and surrounding rock,the reinforcing numbers should be increased,and that when the surrounding rock parameters change,there will be a great impact upon the adjacent crack spacing（crack numbers） and the lining load sharing ratio tends to rise slightly.