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本文通过对荷载随机分布作用下线性多自由度体系产生反应的功率谱密度及自相关函数进行了较深入地阐述,与工程实例相结合,基于以上有关理论对桥梁结构的动力荷载试验的原理、试验内容及目的进行了分析,并初步探讨了桥梁检测评估中桥梁结构动力荷载试验的应用效果。
In this paper, the power spectral density and the autocorrelation function of the linear multi-degree-of-freedom system under the random distribution of load are expounded in detail. Based on the above theories, the principle of dynamic load test of the bridge structure, The content and the purpose of the test were analyzed, and the application effect of the dynamic load test of the bridge structure in the bridge inspection and evaluation was primarily discussed.