Research on Accurate Prediction of Cracking Risk of Large Volume Concrete in Hydraulic Hub Pump Gates
The current conventional concrete cracking risk prediction method mainly simulates and analyzes the factors affecting cracking by combining the control variable method,which leads to poor prediction accuracy because it ignores the degree of influence of different factors on the cracking situation.In this regard,an accurate prediction method is proposed for the risk of cracking of large volume concrete in pump gates of water conservancy hubs.By analyzing the concrete cracking mechanism,the cracking factor variables are selected,and the sensitivity of different factors is calculated to clarify the degree of influence of different factors on the cracking situation.Considering the additional strain of reinforcement on the cracking situation,the maximum crack width of mass concrete is calculated,and the probability of cracking is calculated by using Bayesian parameter method,and finally the risk is graded according to the probability of cracking to achieve the prediction of concrete cracking risk.In the experiments,the proposed method was tested for cracking risk prediction accuracy.The experimental results show that the risk coefficient error value is low and has a more desirable prediction accuracy when the proposed method is used to predict the cracking risk of mass concrete.
万方数据
维普
