Simulation Analysis of Temperature Stresses During Construction of RFC High Arch Dam
To study the distribution characteristics of the temperature field and stress field during the construction period of RFC high arch dam and to investigate the applicability of RFC on high arch dam,this paper applies numerical simulation and sequential coupling method,comprehensively considers the change of elastic modulus of RFC,temperature of entry of RFC into the dam,environmental climate change and other factors,and carries out the whole process of simulation and calculation of the construction period of RFC high arch dam under different temperature control measures.Comparative analysis of the temperature and stress fields during the construction period of high arch dams with different temperature control measures shows that under different temperature control conditions,the distribution of the temperature and stress fields of the dam body is the same,the temperature stress during the construction period is related to the concrete entry temperature,and the stress of the dam body during the operation period varies with the ambient temperature;the maximum tensile stresses after linearization of the stresses are 1.68 MPa,1.60 MPa,and 1.48 MPa,respectively.The results show that when RFC is applied to high arch dams,only simple temperature control measures are needed to meet the temperature anti-cracking requirements in the case of split-seam casting.
rock-filled concretehigh arch damfinite element methodconstruction periodtemperature stresstemperature control measures
万方数据
维普
