Concrete Thermal Stress of Arch Dam in Construction Period of Stability against Sliding of Steep Slope Section

Abstract

Thermal stress, as one of the most important stress of the arch dam during construction period, strongly influences the sliding stability of the arch dam. To analyze this kind of impact on arch dam sliding stability, numerical modeling of a typical slope dam section from 300-meter-high levels arch dam during construction period was conducted. Based on the rigid body limit equilibrium method, results of the case considering thermal stress as well as those without thermal stress were presented. Detailed comparison with the results of multiple monoliths was also made. In addition, the relevant sliding stability coefficient with the consideration of thermal stress was suggested.