神经网络参数识别法在重庆石板坡大桥中的应用  

Application of Neural Network Method to Parameters Identification of Shibanpo Bridge in Chongqing

作　　者：黎曦[1] 顾安邦[1] 乔为国[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2007年第5期13-16,共4页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：BP神经网络法的自适应学习能力、非线性映射能力、鲁棒性和容错能力以及快速收敛能力可有效解决连续刚构桥施工控制中参数估计的核心问题,通过实例证明,其参数估计结果与实测数据吻合性较好,识别精度较高,有相当的实践意义.尤其是对于必须考虑非线性影响、不确定系统的控制等问题,如果经典算法识别精度低,可考虑采用非经典神经网络算法进行重要参数的识别.With the capacity of adaptive self-study, non-llnear representation, good robusticity and error tolerance as well as rapid convergence, BP neural network could effectively solve the core problem of parameters identification in the construction of continuous rigid frame bridge. Through the example, a conclusion is drawn that tile result of parameters estimation using BP network is very identical with the measure, which has practical significance with satisfactory accuracy. If the accuracy in the classic method is rather low especially in problems with non-linear and uncertain system control and so on, the BP neural network can be used well.

关 键 词：连续刚构桥 施工控制 BP神经网络 参数识别 弹性模量 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]