以江坪河水电站放空洞无压段为例,利用ANSYS软件模拟了衬砌混凝土的施工过程,采用三维有限元法仿真计算了温度与温度应力,分析了有无过缝钢筋约束工况下温度应力的发展过程和分布规律,研究了过缝钢筋在增加结构段之间整体性的基础上对衬砌混凝土应力的影响,为隧洞工程是否有必要设置过缝钢筋提供了参考。 Taking the non-pressured section of emptying tunnel of Jiangpinghe Hydropower Station as an example, the construction process of lining concrete was simulated by ANSYS software. The temperature and temperature stress were simulated by three-dimensional finite element method. The development process and the distribution rule of the overlay reinforced bar were studied. The influence of overlay reinforcement on the stress of the lining concrete was studied based on the integrality between the structural sections, which provided a reference for the necessity of setting the overlay reinforcement in the tunneling project.