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连续梁桥施工控制的核心任务是对各种误差进行分析、识别和调整,并对结构未来状态作出预测。为了准确地预测下一未浇筑梁段的预拱度,采用简化的Sage-Husa自适应滤波算法建立预拱度预测模型,对德天铁路跨线大桥主桥施工预拱度进行分析,比较施工阶段各梁段箱梁底实测标高与理论预计标高,监控结果显示两者误差控制在15mm内。简化的Sage-Husa自适应滤波算法在连续梁桥施工控制中的应用是有效的,且易于工程实现,可推广应用于其他类型桥梁的施工控制中。
The key task of continuous beam bridge construction control is to analyze, identify and adjust various errors, and predict the future state of the structure. In order to accurately predict the pre-camber of the next uncast beams, a simplified Sage-Husa adaptive filtering algorithm was used to establish the predictive camber prediction model to analyze the precast camber of the main bridge over the Derwent Railway overpass. The comparison of construction The measured elevation of the box girder bottom of each beam section in the stage and the theoretical elevation are predicted. The monitoring results show that the error between the two is controlled within 15mm. The simplified Sage-Husa adaptive filtering algorithm in the continuous beam bridge construction control is effective and easy to implement, which can be widely applied to the construction control of other types of bridges.