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工程力学  2014 

古建筑木结构燕尾榫节点弯矩-转角关系理论分析

DOI: 10.6052/j.issn.1000-4750.2013.08.0751, PP. 140-146

Keywords: 古建筑木结构,燕尾榫节点,受力机理,弯矩-转角关系,转动刚度,理论分析

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Abstract:

基于燕尾榫节点受力机理的分析,对燕尾榫节点的转动弯矩进行了理论分析,推导了燕尾榫节点弯矩-转角理论计算公式,并与试验结果进行了对比分析,理论分析结果与试验结果吻合较好;在计算公式的基础上,对燕尾榫节点转动弯矩的影响参数进行了分析,结果表明:在一定范围内,随着摩擦系数的增大,燕尾榫节点的转动弯矩和初始转动刚度也逐渐增大;当摩擦系数超过0.5时,节点的初始转动刚度增加幅度逐渐减小;榫头长度和榫头的“收乍”角度的增大均能够提高燕尾榫节点的转动弯矩以及初始转动刚度;榫头高度的增大能够一定程度地提高燕尾榫节点的转动弯矩,但对节点的初始转动刚度影响不大。所得结果可为古建筑木结构的受力分析提供依据。

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