灰色预测和比例预测在施工控制中的应用比较

Prediction comparison of grey method and proportional method in construction control of rigid frame bridge

首先介绍了灰色预测法和比例预测法的基本模型和原理,其次以重庆忠县龙潭渡大桥工程为例,利用Midas/Civil软件建立计算模型,在已得到的实测数据基础上,分别运用灰色预测法和比例预测法对悬臂施工的变形值和应力值进行预测,并将预测值与实测值进行比较,总结出两种预测方法的优缺点,分析两种方法在刚构桥施工控制中各自适合的应用领域。

Firstly,the basic model and principle of grey prediction method and proportion prediction method were introduced. Secondly,taking the Longtan bridge as an example,the model was established by using Midas Civil. On the basis of previous measured data,the predicting deformation value and stress value of cantilever construction were came out respectively by using the two prediction method,and they were compared with the measured values. Finally,the advantages and disadvantages of the two forecasting methods were analyzed.