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中文摘要：
为了解决悬臂型桥墩结构在输入信息未知条件下的物理参数识别问题，采用将松弛法与改进的全量补偿算法结合起来的算法，通过对参数的离散化，对输入未知条件下的一悬臂型桥墩结构的多个物理参数进行了识别。结果表明：无噪声条件下，结构各物理参数识别精度较高；添加不同噪声后，由于Rayleigh阻尼中质量和刚度阻尼系数的数量级差别较大，以致质量阻尼系数的识别结果相对误差明显较刚度参数大，但均在精度要求范围之内。该改进的算法不仅理论上更加完善，同时也具有很高的识别精度和一定的收敛速度，为弯曲型结构物理参数识别研究提供了一种新的方法思路，便于工程应用。
英文摘要：
In order to solve the composite inversion problem of the flexible arm structure, an improved identification method is proposed by combining the relaxation method with the modified total compensation method （MTCM）. It is an effective approach to identify multiple physical parameters by discreting some parameters. A flexible ann pier structure with unknown input, as a numerical example, is given for verifying the new algorithm. The results indicate the new algorithm is improved significantly in both theory and convergence. Furthermore, the new method is improved significantly in both theory and convergence. It provides a new way for flexible structure parameter identification.
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Study on Dynamic Characteristics of Long Span Continuous Bridge from Construction to Completion Cons
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