远大小天城楼盖人致振动舒适度实测及研究
doi: 10.13204/j.gyjz201510007
TEST AND ANALYSIS FOR COMFORT DEGREE FLOOR VIBRATION INDUCED HUMAN OF XIAO TIANCHENG BUILDING
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摘要: 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。Abstract: The floor vibration responses induced human of the new type assembly prefabricated steel concrete composite slab used in the building named Xiao Tiancheng were measured and computed,it was obtained the peak acceleration due to vertical vibrations of the new type floor under six kinds of load cases,i. e single person walking, five people walking,single person running,five people running,single person jumping and five people jumping. The analysis results were in good agreement with the test results. Loading modes,walking route and load frequency which influenced the peak acceleration were analyzed. The results indicated that the jump was the most unfavorable loading mode for floor vibration; the more people,the greater the floor vibration; high order harmonic component of pedestrian load could cause the resonance of the floor; the new type of floor could meet the comfort requirement.
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Key words:
- comfort /
- pedestrian load /
- peak acceleration /
- assembly
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