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基于Novozhilov-柔度理论的连续弯箱梁桥位移参数Kalman滤波识别

, PP. 65-70

Keywords: 桥梁工程,连续弯箱梁桥,Novozhilov-柔度理论,位移参数,Kalman滤波识别

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Abstract:

?为了有效评估和预测弯箱梁桥位移场、应力场,进行了连续弯箱梁桥位移参数的识别,推导了连续弯箱梁桥位移参数的Kalman滤波方程,同时基于Novozhilov-柔度理论,给出了弯箱梁桥位移参数Kalman滤波识别的具体步骤。研究结果表明:连续弯箱梁桥位移参数的Kalman滤波识别对位移参数滤波初始值的选取有较强的依赖性,位移参数滤波初始值选取恰当时,位移参数的Kalman滤波识别过程稳定收敛,且收敛于参数真值;滤波初始值选取不合理时,滤波过程易发散。

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