燕尾榫梁柱节点有限元分析及弯矩-转角关系研究  被引量:1

Finite Element Analysis and Moment-Rotation Relationship of Dovetail Beam-Column Joints

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作  者:陈潘 张凤亮 欧阳金友 CHEN Pan;ZHANG Fengiang;OUYANG Jinyou(Harbin Institute of Technology(Shenzhen),Shenzhen 518055,Guangdong,China;China Construction Science&Technology Group Co.,Ltd.,Shenzhen 518118,Guangdong,China)

机构地区:[1]哈尔滨工业大学(深圳),广东深圳518055 [2]中建科技集团有限公司,广东深圳518118

出  处:《木材科学与技术》2023年第6期68-76,共9页Chinese Journal of Wood Science and Technology

基  金:贵州省科技计划项目“新型城市适度超高层装配式住宅设计、施工及使用阶段关键技术研究与示范”(黔科合支撑[2021]一般357);贵州省科技计划项目“超低能耗建筑轻质高效夹心保温外墙系统关键技术及应用研究”(黔科合支撑[2023]一般424)。

摘  要: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。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.

关 键 词: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 

分 类 号:TU366.2[建筑科学—结构工程]

 

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