Semi-analytical method for calculating temperature stresses in massive concrete wall

• 1、 College of Civil Engineering, Hunan University, Changsha 410082, China
• 2、Hunan Provincial Key Laboratory on Damage Diagnosis for Engineering Structures, Hunan University, Changsha 410082, China

Abstract：the aim of this work lies mainly in the control over the temperature stresses generated in the massive concrete wall after casting as well as ensuring that the safety and durability of the structure would not be affected. Self-developed numerical model in ABAQUS, whose accuracy has been proved by comparing with the experimental data, were used to conduct the parametric analysis in massive concrete walls. The analyzed parameters include the wall aspect ratio, wall thickness, temperature difference, subsoil stiffness and creep, and a semi-analytic formula for calculating the wall temperature stresses was proposed based on the analyzed data. The results show that the temperature stresses of the wall are negatively correlated with the creep while positively correlated with the size and temperature difference of the wall. The longer the wall is, the slower the temperature stress increases will be. The semi-analytical formula calculation results exhibit an average error of less than 5%, which can provide guidance for engineering design.

Keywords： temperature stress semi-analytical formula numerical simulation massive concrete wall