高层建筑劲性混凝土梁柱节点承载力三维仿真  

Three-dimensional simulation of bearing capacity of rigid concrete beam-column joints in high-rise buildings

作　　者：司翔 凌礼贤 林荣顺 林志辉 SI Xiang;LING Lixian;LIN Rongshun;LIN Zhihui(China Construction Seventh Engineering Division Co.,Ltd.,Zhengzhou 450052,China)

机构地区：[1]中国建筑第七工程局有限公司,河南郑州450052

出　　处：《粘接》2025年第2期169-172,176,共5页Adhesion

摘　　要：对劲性混凝土梁柱节点承载力研究,搭建各梁柱节点仿真模型,统计分析各个截面的应变及受力状态。实验结果表明,在弹性阶段节点应力最高达到225.6 MPa,塑性阶段的核心区柱壁产生严重外鼓现象,应力最高达到309.5 MPa;随着加载级别增大,梁柱拼接截面的屈服范围向两端方向扩张;缩减空鼓占比能够提升梁柱节点的承载力,同时混凝土强度不能偏低;劲性混凝土梁柱节点区域的腹板厚度越大,节点的承载力越强;在一定范围内,提升轴压比能够使梁柱节点的承载力同步提升,轴压比高于0.8后承载力有所下降,当混凝土强度由C30提升至C40,梁柱节点的承载力提升16.09%。In order to study the bearing capacity of rigid concrete beam-column joints,the simulation model of each beam-column joint was constructed,and the strain and stress state of each cross-section were statistically analyzed.The experimental results showed that in the elastic stage,the maximum joint stress reached 225.6 mpa,and in the plastic stage,the column wall in the core area produced serious bulge,and the maximum reached 309.5 mpa.With the increase of loading level,the yield range of beam column splicing section expanded to both ends.Reducing the proportion of hollowing could improve the bearing capacity of beam column joints,and the concrete strength could not be low.The greater the web thickness in the joint area of rigid concrete beam column,the stronger the bearing capacity of the joint.Within a certain range,raising the axial compression ratio could increase the bearing capacity of beam column joints synchronously.When the axial compression ratio was higher than 0.8,the bearing capacity decreased.When the concrete strength is increased from C30 to C40,the bearing capacity of beam column joints increased by 16.09%.

关 键 词：高层建筑 劲性混凝土 梁柱节点 承载力 荷载位移 

分 类 号：TQ178[化学工程—硅酸盐工业]