【摘要】 以广州市轨道交通4号线沙湾大桥为研究背景,应用通用有限元软件对该桥进行结构分析。应用卡尔曼滤波法和等维灰数递补数据处理技术改进的灰色预测模型以及这2种方法的结合对施工控制的标高进行预测,分析了应力监测的误差及其原因。现场实测结果表明,将这2种方法结合提高了线形预测的精度,可为同类型桥梁的施工控制提供参考。更多还原

【Abstract】 Based on railway transport Shawan Bridge No.4 of line in Guangzhou city,the bridge structure was analyzed by commercial finite element method.The elevation was forecasted by the Kalman’s filtering estimation method,the modified gray model and the combination of these two methods.The stress monitoring errors and error reasons were analyzed.The measured results show that the combination of the two approaches can improve forecast accuracy and the present method has reference to the same kind of bridges construction.更多还原