Fully Coupled Thermal-mechanical Analysis of Concrete Gravity Arch Dam

In this study, a fully coupled analysis method of the thermal-mechanical field in the pouring process of mass concrete is proposed to analyze the temperature and stress distribution of a concrete gravity arch dam. A computational code of a concrete temperature damage constitutive model is programmed as a subroutine program in the finite element code ABAQUS via the secondary development platform. The construction process of a gravity arch dam is simulated, and the dam's thermal-mechanical field and damage or cracking area during the pouring construction are analyzed. The results show that the method proposed in this paper is appropriate for calculating and analyzing the fracture problem triggered by the internal temperature change in the pouring process of a concrete gravity arch dam. Predicting and evaluating the damage and cracking distribution during the concrete dam construction period can be processed via the method proposed in this paper. The research results will provide a reference for the construction and operation of the dam project.