基于ANSYS的大体积混凝土温度应力计算程序开发研究

Research on the Development of Thermal Stress Computation Procedure of Massive Concrete Structure Based on the ANSYS Platform

通过对ANSYS有限元计算软件进行二次开发,实现了对大体积混凝土结构施工期与运行期温度场、应力场的仿真模拟。该计算程序可考虑实际工程中的各种荷载和边界条件,具有计算效率高、通用性好的特点。利用本程序对某碾压混凝土重力坝28号非溢流坝段的施工与运行过程进行了完整的数值仿真计算,计算结果表明本程序能很好地模拟大体积混凝土结构施工期和运行期的温度场和应力场。

Based on the platform of ANSYS,a computation procedure of the thermal stress of massive concrete structure in construction and operation periods is presented in this paper.The procedure can not only simulate many kinds of loads and boundary conditions but also have advantages in calculation efficiency and generality. The highest segment of a RCC gravity dam is simulated in its construction and operation periods. The results show that this procedure is excellent in simulating the thermal stress fields of the massive concrete structure in the construction and operation periods.