拓展步行荷载对楼板振动响应影响的对比研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (18) : 55-59.

论文

拓展步行荷载对楼板振动响应影响的对比研究

陈隽1,2 ，叶艇2，彭怡欣2

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Methods for Expanding Single Foot-fall Curve: A Comparison Study Based on Floor Responses

CHEN Jun12, YE Ting2 and PENG Yixin2

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文章历史 +

摘要

通过混凝土板振动响应对比分析，比较了按步频、步行时间、双支撑阶段时长、双支撑阶段时长比例等4种方法拓展步行荷载时程与基准时程的差异。并分析了步频、步行时间和双支撑阶段时长比例对拓展时程的影响。结果表明：在有准确的步频或步行时间值时，按步频或步行时间拓展时程比较合理，否则，按双支撑阶段时长比例拓展时程比较合理。

Abstract

This paper investigates the effectiveness and applicability of four methods for expanding single foot-fall force curve into a continuous curve by comparing the calculated vibration responses of a square concrete slab. The four methods are, by walking rate, by gait period, by double support time and by double support time proportion. The influence of computation parameters on the four methods is also discussed. The results show that when the exact value of walking rate or gait period is known, the expansion methods using the two parameters are better than others. Otherwise, the expansion method based on double support time proportion is recommended.

导出引用

陈隽;;叶艇;彭怡欣. 拓展步行荷载对楼板振动响应影响的对比研究[J]. 振动与冲击, 2012, 31(18): 55-59

CHEN Jun;YE Ting and PENG Yixin. Methods for Expanding Single Foot-fall Curve: A Comparison Study Based on Floor Responses[J]. Journal of Vibration and Shock, 2012, 31(18): 55-59