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[1]姜南标,胡夏闽,洪万.木-混凝土组合楼盖振动舒适度有限元分析[J].南京工业大学学报(自然科学版),2016,38(05):21-27.[doi:10.3969/j.issn.1671-7627.2016.05.004]
 JIANG Nanbiao,HU Xiamin,HONG Wan.Finite element analysis on vibration comfort of timber-concrete composite floor[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(05):21-27.[doi:10.3969/j.issn.1671-7627.2016.05.004]
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木-混凝土组合楼盖振动舒适度有限元分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年05期
页码:
21-27
栏目:
出版日期:
2016-09-28

文章信息/Info

Title:
Finite element analysis on vibration comfort of timber-concrete composite floor
文章编号:
1671-7627(2016)05-0021-07
作者:
姜南标胡夏闽洪万
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
JIANG NanbiaoHU XiaminHONG Wan
College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
木-混凝土组合楼盖 振动舒适度 自振频率 峰值加速度
Keywords:
timber-concrete composite floor vibration comfort natural frequency peak acceleration
分类号:
TU398.9
DOI:
10.3969/j.issn.1671-7627.2016.05.004
文献标志码:
A
摘要:
应用ABAQUS有限元软件对木-混凝土组合楼盖的振动舒适度进行了分析,并探讨了混凝土翼板的跨厚比和长宽比、木梁跨高比以及连接件对组合楼盖振动舒适度的影响。结果表明:木-混凝土组合楼盖的振动舒适度随混凝土翼板跨厚比的减小和木梁跨高比的减小而提高; 有效的连接是保证木-混凝土组合楼盖协同工作的关键,采用了有效连接的木-混凝土组合楼盖的振动舒适度要比没有采用连接件的好得多,螺钉连接件的间距减小,同样有助于提高组合楼盖的振动舒适度; 减小混凝土翼板的长宽比时,从自振频率这一指标来看,木-混凝土组合楼盖的振动舒适度在降低,但是从峰值加速度这一指标来看,其振动舒适度则在提高。在有限元分析的基础上,建议采用自振频率和峰值加速度的双控指标作为木-混凝土组合楼盖振动舒适度的评价标准,并可通过保证混凝土翼板与木梁之间有效的连接以及减小混凝土翼板的跨厚比或木梁的跨高比等方法来提高组合楼盖的振动舒适度。
Abstract:
Finite element model was established to evaluate the vibration comfort of timber-concrete composite floor with ABAQUS. The effects of some factors(the span-thickness ratio and length-to-width ratio of concrete flange,the span-height ratio of timber beam and the connectors)on the vibration comfort of composite floor were discussed. The results showed that the vibration comfort of timber-concrete composite floor improves with the decrease in the span-thickness ratio of concrete flange and the span-height ratio of timber beam. Effective connection is the key to timber-concrete composite floor,and the vibration comfort of timber-concrete composite floor with effective connection is much better than that without connectors. Besides,the vibration comfort of composite floor improves with the decrease in spacing between the screw connectors. When the length-to-width ratio of concrete flange decreases,from the point of natural frequency-based index,the vibration comfort of composite floor gets worse,but from the point of peak acceleration-based index,the vibration comfort of composite floor gets better. Based on numerical simulation,it is recommended to apply both frequency-based index and peak acceleration-based index to evaluate the vibration comfort of timber-concrete floor. Meanwhile,some measures(effective connections between concrete flange and timber beam,decreasing the span-thickness ratio of concrete flange and the span-height ratio of timber beam)are presented to improve the vibration comfort of timber-concrete composite floor.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-06-21
基金项目:国家自然科学基金(51478220)
作者简介:姜南标(1991—),男,江苏盐城人,硕士,主要研究方向为组合结构; 胡夏闽(联系人),教授,E-mail:verbundbau@163.com.
引用本文:姜南标,胡夏闽,洪万.木-混凝土组合楼盖振动舒适度有限元分析[J].南京工业大学学报(自然科学版),2016,38(5):21-27..
更新日期/Last Update: 2016-09-20