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通过建立竖向振动舒适度长期监测系统,测试了青岛体育中心综合训练馆大跨度混凝土楼盖在主体结构完成、木地板铺设完成、整体结构完成等4个典型阶段的动力特性;实测了在单人行走、多人齐步行走、多人跳跃、多人随机及正常比赛训练等多种激励情况下结构楼面的加速度反应,并与有限元分析及英国混凝土协会建议的计算方法(CCIP-016)进行了比较。结果表明,大跨度楼盖具有典型的模态密集特性,本例中木地板的刚度贡献可以忽略。人致激励的类型和行走路线对楼盖动力响应影响显著。CCIP-016的动力响应计算结果比实测值小。上述结果可为全面了解大跨度预应力楼盖的实际动力性态、验证现有计算方法的合理性及类似建筑的舒适度评估提供依据。
By establishing a long-term monitoring system of vertical vibration comfort, the dynamic characteristics of four typical phases of the long-span concrete floor of the comprehensive training center of Qingdao Sports Center were tested in the completion of the main structure, the laying of the wooden floor and the overall structure. The acceleration response of the structural floor under many kinds of stimuli, such as walking, walking in the same place, people jumping, multiplayer randomization and normal competition training, is also compared with the finite element analysis and the calculation method recommended by the British Concrete Association (CCIP-016 ) Were compared. The results show that the long-span floor has typical mode-intensive characteristics. In this case, the stiffness contribution of the wood floor can be neglected. The types of people-induced motivation and walking routes have a significant impact on the dynamic response of the floor. The dynamic response of CCIP-016 is smaller than the measured value. The above results provide a basis for a comprehensive understanding of the actual dynamic behavior of large span prestressed floors and for verifying the rationality of existing computational methods and the comfort assessment of similar buildings.