Application of the temperature component model based on Beta function in deformation monitor-ing of concrete arch dams
Concrete arch dams are highly sensitive to temperature due to their unique hyperstatic shell structure.The temperature component significantly affects the overall performance of deformation moni-toring model.However,the traditional methods for constructing the temperature component such as peri-odical trigonometric function and average temperature cannot well represent the hysteresis effect be-tween the temperature distribution inside arch dam body and the outside temperature.Therefore,this study proposes a new simulation method for the hysteresis characteristic of temperature,using the Beta distribution to describe the hysteresis effect,and establishing a deformation monitoring model for the concrete arch dam based on the Beta function.The temperature component model based on the Beta function is applied to establish the deformation monitoring model for an arch dam,and the results show that the fitting accuracy and prediction accuracy of this monitoring model are better than traditional mod-els.This model characterizes the weight distribution of the influence of early temperature on the defor-mation of dam measurement points along the arch direction,and describes the hysteresis effect of tem-perature on dam deformation.
concrete arch damtemperature componentBeta functiondeformation monitoring model
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