建筑结构动态特性调整方法探讨

Modification research of structural dynamic characteristic

通过对无阻尼自由振动方程的讨论,应用原结构模型的振动测试信息,进行一系列线性方程的变换研究,提出一种适合建筑结构模型动态特性快速调整的简易方法.并结合三层1/2缩尺的砖房模型实验,通过修改砌体局部层间质量的方法,进行砌体结构动态特性调整研究.实验结果表明,应用此调整方法能快速进行结构模型更新,为此类研究提供有益的参考.

According to the dynamic characteristic of original model, a simple modification method by a set of linear equation transform of undamped structural system is presented. The mass modification method has been verified based on the threestory masonry building of half scaling. The results can be regarded as the important reference for structural modification research.