首页|燕尾榫梁柱节点有限元分析及弯矩-转角关系研究

燕尾榫梁柱节点有限元分析及弯矩-转角关系研究

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为研究传统榫卯连接方式应用于现代木结构的可行性,设计包含榫头、卯口、塞木和木楔片的燕尾榫梁柱节点,利用ABAQUS软件分析杉木燕尾榫梁柱节点的破坏模式、应力发展和弯矩-转角关系.通过分析梁柱节点受力机理,建立榫头四个挤压区域的几何、物理和平衡关系,推导初始刚度和极限弯矩的表达式,提出基于幂函数模型的燕尾榫梁柱节点弯矩-转角关系公式.验算结果表明,该公式计算的节点初始刚度、极限弯矩,与有限元分析结果仅相差6.46%、2.09%,可用于预测燕尾榫梁柱节点的极限承载力.
Finite Element Analysis and Moment-Rotation Relationship of Dovetail Beam-Column Joints
To investigate the feasibility of applying traditional mortise-tenon connection to modern timber structures,a dovetail beam-column joint with Cunninghamia lanceolata,containing mortise heads,tenon mouths,wooden plugs,and wooden wedges was designed.The failure mode,stress development,and moment-rotation relationship of the dovetail beam-column joint were analyzed using ABAQUS software.By analyzing the force mechanism of the joint,the relationships among geometry,physics,and equilibrium of the four compression zones of the mortise head were established.The equations for the initial stiffness and ultimate bending moment were derived.The theoretical formula for the dovetail beam-column joint based on a power function model was proposed.The verification results show that for the initial stiffness and ultimate bending moment,the diffferences between the calculation by this formula and the finite element analysis results are 6.46%and 2.09%,respectively.The formula can be used to predict the ultimate bearing capacity of dovetail beam-column joints.

timber structuredovetail beam-column jointmoment-rotation relationshipfinite element analysispower function modelultimate bending momentultimate bearing capacity

陈潘、张凤亮、欧阳金友

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哈尔滨工业大学(深圳),广东深圳 518055

中建科技集团有限公司,广东深圳 518118

木结构 燕尾榫梁柱节点 弯矩-转角关系 有限元分析 幂函数模型 极限弯矩 极限承载力

贵州省科技计划贵州省科技计划

黔科合支撑[2021]一般357黔科合支撑[2023]一般424

2023

10.12326/j.2096-9694.2023083

木材科学与技术
中国林科院木材工业研究所

木材科学与技术

CSTPCD北大核心
影响因子：0.677
ISSN：2096-9694
年,卷(期)：2023.37(6)
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