行走激励下楼盖振动加速度反应谱研究

陈隽;叶艇;彭怡欣;

振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 1-7.

PDF(1923 KB)
PDF(1923 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 1-7.
论文

行走激励下楼盖振动加速度反应谱研究

  • 陈隽1,2,叶艇2,彭怡欣2,3
作者信息 +

Acceleration Response Spectrum of Long Span Floor under Human Walking Loads

  • Jun Chen1,2 Ting Ye2, Yixin Peng1,3
Author information +
文章历史 +

摘要

利用320条实测中国人步行荷载曲线,由振型分解法计算了步行荷载作用下大跨混凝土楼盖竖向振动的10秒加速度均方根反应谱曲线。基于楼盖频率与振动幅值双控原则,对计算反应谱进行了拟合简化,提出了3-20Hz频率范围的设计用楼盖均方根加速度响应计算表达式。进一步讨论了高阶振型、边界条件、计算跨度、行走步幅和阻尼比等要素对反应谱的影响,并给出了对应的修正方法。最后通过与已建大跨楼盖步行激励下实测加速度响应的比较,验证了建议反应谱计算方法的合理性。

Abstract

This is paper investigates acceleration response spectrum of long span floor under human walking loads. Three hundred and twenty experimental measurements of walking load curves have been applied to a long span floor to obtain the 10-second root-mean-square acceleration response spectrum, based on which a simplified mathematical model has been suggested for frequency range of 3-20Hz. The effect of several computational parameters including higher vibration modes, boundary condition, floor span, stride length and damping ratio on the spectrum has been studied and corresponding correction measure has been suggested. Detailed implementation procedure of the suggested response spectrum has been presented. The feasibility and applicability of the suggested spectrum has been validated by comparing the prediction results with field measurements of an existing long span floor.
;

关键词

步行荷载 / 大跨度混凝土楼盖 / 加速度均方根反应谱 / 参数分析

Key words

human walking loads / long span concrete floor / RMS acceleration response spectrum

引用本文

导出引用
陈隽;叶艇;彭怡欣;. 行走激励下楼盖振动加速度反应谱研究[J]. 振动与冲击, 2014, 33(24): 1-7
Jun Chen;Ting Ye;Yixin Peng;. Acceleration Response Spectrum of Long Span Floor under Human Walking Loads[J]. Journal of Vibration and Shock, 2014, 33(24): 1-7

PDF(1923 KB)

863

Accesses

0

Citation

Detail

段落导航
相关文章

/