木-混凝土组合楼盖振动舒适度有限元分析
发布时间：2019-05-16 23:07
【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]:The vibration comfort of wood-concrete composite floor is analyzed by using ABAQUS finite element software, and the effects of span-thickness ratio and aspect ratio, span-height ratio of wood beam and connectors on vibration comfort of composite floor are discussed. The results show that the vibration comfort of wood-concrete composite floor increases with the decrease of span-thickness ratio of concrete wing and the decrease of span-height ratio of wood beam. Effective connection is the key to ensure the cooperative work of wood-concrete composite floor. The vibration comfort of wood-concrete composite floor with effective connection is much better than that without connector, and the distance between screw connectors is reduced. It is also helpful to improve the vibration comfort of the composite floor. When the aspect ratio of concrete wing is reduced, from the point of view of natural vibration frequency, the vibration comfort of wood-concrete composite floor is decreasing, but from the point of view of peak acceleration, the vibration comfort of wood-concrete composite floor is increasing. On the basis of finite element analysis, it is suggested that the double control index of natural vibration frequency and peak acceleration should be used as the evaluation standard of vibration comfort of wood-concrete composite floor. The vibration comfort of the composite floor can be improved by ensuring the effective connection between the concrete wing and the wooden beam and reducing the ratio of span to thickness of the concrete wing or the ratio of the span to height of the wood beam.
【作者单位】： 南京工业大学土木工程学院;
【基金】：国家自然科学基金(51478220)
【分类号】：TU398.9
[Abstract]:The vibration comfort of wood-concrete composite floor is analyzed by using ABAQUS finite element software, and the effects of span-thickness ratio and aspect ratio, span-height ratio of wood beam and connectors on vibration comfort of composite floor are discussed. The results show that the vibration comfort of wood-concrete composite floor increases with the decrease of span-thickness ratio of concrete wing and the decrease of span-height ratio of wood beam. Effective connection is the key to ensure the cooperative work of wood-concrete composite floor. The vibration comfort of wood-concrete composite floor with effective connection is much better than that without connector, and the distance between screw connectors is reduced. It is also helpful to improve the vibration comfort of the composite floor. When the aspect ratio of concrete wing is reduced, from the point of view of natural vibration frequency, the vibration comfort of wood-concrete composite floor is decreasing, but from the point of view of peak acceleration, the vibration comfort of wood-concrete composite floor is increasing. On the basis of finite element analysis, it is suggested that the double control index of natural vibration frequency and peak acceleration should be used as the evaluation standard of vibration comfort of wood-concrete composite floor. The vibration comfort of the composite floor can be improved by ensuring the effective connection between the concrete wing and the wooden beam and reducing the ratio of span to thickness of the concrete wing or the ratio of the span to height of the wood beam.
【作者单位】： 南京工业大学土木工程学院;
【基金】：国家自然科学基金(51478220)
【分类号】：TU398.9
【参考文献】
相关期刊论文 前4条
1 蒋正跃;王福来;付云松;张洪海;胡朝英;;楼板振动舒适度的设计方法探讨[J];云南农业大学学报(自然科学);2014年04期
2 周志茹;赵茂程;王正;管s，
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