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阻尼耗能抗风装置对低矮双坡屋面风压影响研究

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Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:建筑结构学报

Included Journals:CSCD

Volume:39

Issue:4

Page Number:8-17

ISSN No.:1000-6869

Key Words:低矮房屋;耗能装置;风洞试验;数值模拟;平均风压

Abstract:采用阻尼耗能抗风装置以减小强风对低矮双坡房屋的破坏,对无耗能抗风装置、设置有女儿墙及耗能抗风装置和仅有女儿墙3种屋面的村镇低矮房屋进行了风洞试验,以研究阻尼耗能抗风装置对低矮双坡屋面风压的影响.试验结果表明:耗能抗风装置对减小屋面的最不利负压效果明显,迎风屋面为主要破坏区域,如屋脊附近处、屋面与山墙接触边缘处等,平均负风压系数绝对值减小幅度可达50%;耗能抗风装置对于背风屋面的风压影响也较明显,平均负风压系数绝对值减小幅度最多可达15%.采用有限元软件对风场中低矮双坡屋面的风压进行了数值模拟,得到的屋面风压分布规律与风洞试验结果一致.

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