行人激励作用下的室内旋转钢楼梯的振动分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (14) : 128-132.

论文

行人激励作用下的室内旋转钢楼梯的振动分析

周彬任晓崧吕西林

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Vibration analysis of indoor spiral steel stair under pedestrians’activity

ZHOU Bin REN Xiao-song LU Xilin

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文章历史 +

摘要

摘要: 由于其自身优美的曲线及轻盈的线条，近年旋转钢楼梯被广泛用大型建筑内部。因其空间受力体系的特点有必要分析其在人群激励作用下的振动特性。针对行人在楼梯与平地上运动中落步曲线，步频、步幅等等不同，本文提出了适用于该类型空间结构振动分析的单人激励荷载模型。并针对室内旋转楼梯的特点提出了参考分析工况与人群激励作用下的振动数值分析方法。最后针对某工程实例进行了现场振动测试与数值计算，验证了本文提出的单人激励荷载模型及人群激励作用下的振动分析方法。

Abstract

Abstract: Over the last decade it has become increasingly popular to provide large public areas with gracefully designed "flexible" staircases. Because of its space load bearing system, it is necessary to make vibration analysis under pedestrians’ activity. Because of the differences between human induced loading on a floor with that generated whilst ascending or descending a staircase, the load model induced by pedestrians on s staircase and the vibration analysis method of the staircase are represented in this paper. Finally, the numerical analysis and the vibration site test of a practical engineering example are carried out and verify the feasibility and effectiveness of the load model of pedestrian and the vibration analysis method.

导出引用

周彬任晓崧吕西林. 行人激励作用下的室内旋转钢楼梯的振动分析[J]. 振动与冲击, 2012, 31(14): 128-132

ZHOU Bin REN Xiao-song LU Xilin. Vibration analysis of indoor spiral steel stair under pedestrians’activity[J]. Journal of Vibration and Shock, 2012, 31(14): 128-132