| 某钢旋转楼梯的振动测试与分析 |
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| 引用本文： | 袁媛,任晓崧,周彬.某钢旋转楼梯的振动测试与分析[J].工业建筑,2011(Z1):264-266,277. |
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| 作者姓名： | 袁媛 任晓崧 周彬 |
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| 作者单位： | 同济大学结构工程与防灾研究所; |
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| 摘 要： | 某工程的室内椭圆形旋转钢楼梯采用梁式楼梯的结构形式,支承在上下楼层的同一位置,其悬挑长度较大。楼梯的设计是按照强度和变形等指标控制的,但在使用过程中发现楼梯的振动较大,会引起人员的不舒适甚至不安全感。对该楼梯的振动情况进行了实测和对比分析,参考相关规范提出了频率、加速度峰值的振动评价指标,并据此对该楼梯的振动情况进行了评价;通过对两者的对比分析提出了工程的两点建议:1)旋转钢楼梯的竖向基频应大于6Hz;2)楼梯正常使用时的竖向加速度峰值小于0.25 m/s2。该建议可为类似工程提供参考。
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| 关 键 词： | 钢旋转楼梯 振动 测试 数值分析 |
VIBRATION TEST AND NUMERICAL ANALYSIS OF A PRACTICAL STEEL SPIRAL STAIR |
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| Yuan Yuan Ren Xiaosong Zhou Bin.VIBRATION TEST AND NUMERICAL ANALYSIS OF A PRACTICAL STEEL SPIRAL STAIR[J].Industrial Construction,2011(Z1):264-266,277. |
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| Authors: | Yuan Yuan Ren Xiaosong Zhou Bin |
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| Affiliation: | Yuan Yuan Ren Xiaosong Zhou Bin (Research Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China) |
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| Abstract: | The structural type of cantilever beam is applied to an indoor steel oval stair.It is supported at the same position in the different floors and has large length of cantilever.The stair is designed in accordance with the requirement of strength and deformation,but its relative large vibration in service brings an intense sense of discomfort or unsafety for persons.In this paper,the vibration test and the numerical analysis of this stair are presented for comparative study.Referring to the relevant codes,the... |
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| Keywords: | steel spiral stair vibration test numerical analysis |
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