Simulation Analysis For RCC Arch Dam's Temperature And Stress Field During Construction Process

Roller compacted concrete dam is similar to concrete dam, and also has temperaturecracks. The thermal stress of RCC dam is different from concrete dam's, and in order to getcorrect results, these different characteristics must be considered. At present,the high RCCarch dams above100m have a tendency to development. Accordingly study on the thermalstress of RCC arch dam has practical importance.Using the general simulation and analysis software ANSYS,the author write a simulationand analysis program for RCC arch dam's temperature and stess field during its constructionprocess. The whole process from the beginning of concrete pouring to constructionaccomplish is successfully simulated.In computation the effect of thermal insulation, elastic modulus, change along withage,the progress of pouring by layer,work suspension in summer,the change of airtemperature are considered. Based on the construction schedule and thermodynamicsparameters of certainRCC arch dam, the temperature and stress fields during construction and service aresimulated and computed, and also the computation results are compared with the practicalobservation data；The comparison results show that the computation results are reasonable.The research fruits in this article can provide the temperature isoline map of crown cantileversection and central longitudinal section of the dam,the stress isoline map of crown cantileversection and upstream and downstream surfaces of the dam,the maximal and minimal stressdistribution map in dam abutment along with the height of dam,the maximal and minimalstress table of typical nodes and the maximal and minimal stress table in different elevations,and also provide reference basis for taking relative temperature control measures in the designand construction of RCC arch dam.