基于传感器数据融合的高速公路框架桥顶进施工偏差控制

Deviation Control for Jacking Construction of Highway Frame Bridges Based on Sensor Data Fusion

与其他框架桥不同,高速公路框架桥在顶进施工中经常会产生偏差,为此提出一种基于传感器数据融合的高速公路框架桥顶进施工偏差控制方法。首先,利用框架桥结构的有限元模型,给出顶进施工的材料参数;其次,根据边墙土层的压力分布,确定框架桥顶进施工的土压力,结合顶进力的计算,分析了框架桥顶进施工过程的受力行为;再次,利用传感器监测框架桥顶进施工过程中的数据,根据传感器节点之间的兴趣关系度,构建框架桥顶进施工数据融合模型;最后,根据框架桥顶进施工偏差的产生机理,纠偏设备的施工数据,将其与实际顶进施工数据对比,实现框架桥顶进施工偏差的控制。实验结果表明:经过本文方法的控制之后,框架桥顶进施工偏差有所降低,并将控制精度提高到90%以上。

Unlike other frame bridges,highway frame bridges often produce deviations during jacking construction.There⁃fore,a deviation control method for highway frame bridge jacking construction based on sensor data fusion is proposed.Firstly,using the finite element model of the frame bridge structure,the material parameters for the top construction are given based on the pressure distribution of the soil layer on the side walls;secondly,the soil pressure for the top construc⁃tion of the frame bridge is determined,and combined with the calculation of the top construction force,the stress behavior during the top construction process of the frame bridge is analyzed;then,using sensors to monitor the data during the con⁃struction process of the top of the frame bridge,a data fusion model for the top of the frame bridge construction is con⁃structed based on the interest relationship between sensor nodes;finally,based on the mechanism of the deviation in the construction of the frame bridge top,the construction data of the correction equipment is compared with the actual top construction data to achieve the control of the deviation in the top construction of the frame bridge.The experimental re⁃sults show that after the control of the method described in the article,the construction deviation of the top of the frame bridge is reduced,and the control accuracy is improved to over 90%.