某体育馆看台的TMD减振分析与设计

TMD Vibration Analysis and Design of a Gymnasium Stands

体育馆作为人群相对集中的大空间公共建筑,应该确保结构在人行激励下不发生过大的竖向振动,确保其正常使用功能。以某体育馆实际工程项目为研究对象,考虑起立、音乐节拍运动、跳跃、行走等人致荷载工况,对比分析了体育馆看台在相同人致荷载激励下设置TMD减振系统前后的振动响应。结果表明,加设TMD减振系统后,体育馆看台竖向振动舒适度有一定程度的改善。该体育馆看台结构TMD减振系统的应用可为以后类似工程的振动舒适度设计提供参考建议。

As a large space public building, it should be confirmed that the gymnasium does not have excessive vertical vibration under pedestrianloads. In this paper, an actual gymnasium project with a TMD damping system is treated as the research object. Taking stand-up loads, music rhythmic loads, skipping loads and walking loads into account, it can satisfy the vibration comfortability requirements by the comparative analysis of the vibration response without and with the TMD system installed in the gymnasium stands under the same pedestrian load excitations. The results show that the TMD system has a certain effect on improving the vertical vibration comfortability of the stands. This TMD system application to the gymnasium stands can provide a reference for the vibration comfortability design of subsequent similar projects.