卡尔曼滤波法应用于悬索桥施工控制——钢箱梁吊装阶段

Application of the Kalman′s Filtering Method to the Suspension Bridge Construction Control the Stiffening Box Girder Suspending

本文应用卡尔曼滤波法处理在悬索桥钢箱梁吊装施工中因系统和测量随机噪声而引起的结构实际表现与计算值和观测值不一致的问题。通过滤去随机噪声，得到系统统计意义上无偏的钢箱梁顶面标高的最优估计值和下一阶段的最佳预测值。据此确定吊杆的调整量，从而指导施工。

In the light of the Kalman′s Filtering,the discrepancy among the actual structure response,the computed values and the measurements,caused by the random noise during the stiffening box girder suspending,was solved for the first time in the suspension bridge construction.By filtering off the noise,the statistically unbiased estimation of the stiffening box girder elevation and the prediction for the next step coule be achieved,upon which the boom adjustment coule be determined providing guidance to the construction