基于塑料光纤裂缝传感器的裂缝开度预测

Prediction of Crack Width Based on Plastic Optical Fiber Crack Sensor

针对混凝土工程裂缝难以准确预测的问题,结合利用塑料光纤裂缝监测技术所得到的试验数据,运用多项式回归和权值分配等数学方法,建立了一种考虑到裂缝与塑料光纤呈不同夹角时的影响的裂缝开度预测模型,并将模型预测的裂缝开度值与实测值进行比较分析。结果表明,预测值与实测值具有较好的拟合精度,可见将该模型与塑料光纤裂缝监测技术结合用于预测裂缝扩展宽度具有可行性,且预测精度较高。

The crack development in concrete project is uncertain and hard to forecast.A prediction model of crack width is built by polynomial regression and weight distribution based on plastic optical fiber technology.And then the predictive value of crack width is compared with measured value.The result shows that the fitting precision between predictive value and measured value is well.Therefore,applying the prediction model combined with plastic optical fiber technology in crack width prediction is feasible and the model has a high prediction precision.