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工程力学  2014 

考虑边缘框架贡献的钢板剪力墙结构设计

DOI: 10.6052/j.issn.1000-4750.2012.10.0800, PP. 18-26

Keywords: 钢板剪力墙,边缘框架,倒塌机制,极限承载力,设计方法

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Abstract:

传统钢板剪力墙结构在设计时假设内嵌钢板承担100%的水平作用,未量化考虑边缘框架的贡献,但分析表明,在梁柱刚接的情况下边缘框架对侧向承载力的贡献不能忽略。通过钢板剪力墙结构的塑形极限状态分析,提出考虑边缘框架贡献的钢板剪力墙结构设计方法。对边缘框架梁(HBE)和边缘框架柱(VBE)进行受力分析,推导考虑轴力影响的VBE截面设计公式并将其应用于考虑框架贡献的侧向承载力公式中,确定内嵌钢板与边缘框架的剪力分配公式。通过对单层单跨的钢板剪力墙结构的算例分析,验证剪力分配公式的适用性。最后分别采用传统设计方法和考虑框架贡献设计方法设计9层钢板剪力墙结构并对其进行非线性动力时程分析,计算结果表明:两种方法设计的结构层间位移角均满足规范限值(1/50),验证了该设计方法的合理性;在总用钢量方面,采用考虑框架贡献设计的结构节省钢材6.48%,较为经济。

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