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对远大小天城中的新型预制装配式集成楼盖进行人致振动舒适度现场实测及计算分析,测得楼盖在单人步行、5人步行、单人跑步、5人跑步、单人跳跃、5人跳跃下的竖向振动峰值加速度。采用行走路线法和定点激励法两种加载方式,计算分析行进路线、荷载频率等对楼盖竖向振动的影响,将计算结果与实测结果进行对比,吻合较好。研究表明:跳跃是楼盖竖向振动最不利的激励类型;人群作用较单人作用不利;人行荷载的高阶谐波分量能引起楼盖共振;该新型楼盖满足舒适度要求。
On the far-size day in the city of new prefabricated integrated building floor vibration-induced comfort measured and calculated by the site measured single-pedestrian walk in the floor, 5 walk, single run, 5 running, single jump, 5 people jump under the vertical vibration peak acceleration. The method of walking route and fixed point excitation are adopted to calculate and analyze the influence of the route of travel and load frequency on the vertical vibration of the floor. The calculated results are in good agreement with the measured results. The research shows that jumping is the most unfavorable type of excitation for the vertical vibration of the floor. The effect of the population is worse than that of the single person. The high-order harmonic components of the pedestrian load can cause the resonance of the floor. The new floor meets the comfort requirements.