摘要
目的 解决传统钢筋混凝土梁柱节点施工复杂、延性不足等问题。方法 提出3种预制外包钢混凝土梁柱连接节点,选取外法兰盘节点,建立ABAQUS有限元模型,分析梁柱连接节点的荷载-位移曲线,研究法兰盘、高强螺栓对节点刚度、承载力的影响。结果 预制节点承载力略低于现浇外包钢混凝土梁柱节点;法兰盘与螺栓为主要受力部件,当达到极限荷载的85%时,钢骨架首先屈服,破坏后便于修复;法兰盘厚度由16 mm增加到40 mm,屈服荷载增加17.33%,极限荷载增加18.34%;高强螺栓直径由M20增加到M30,屈服荷载增加40.43%,极限荷载增加35.38%;数量由6个增加到18个,屈服荷载增加18.31%,极限荷载增加9.65%。结论 在实际工程中,建议法兰盘厚度取30 mm,配置12个M27高强螺栓。
In order to ease the construction difficulty and enhance the ductility of traditional reinforced concrete joint,three kinds of precast steel-encased concrete beam-column joints were presented.The load-deformation curve of external flange plate joint was analyzed by ABAQUS.The influence of flange plate and high-strength bolt on joint stiffness and bearing capacity were also analyzed.The results indicated that the load bearing capacity of precast joint were slightly smaller than those of cast-in-site joint.The flange plate and bolts were the main force-bearing parts.When the ultimate load reached 85%,the steel skeleton yield first,which were easy to repair after damage.The flange plate thickness increased from 16 mm to 40 mm,the yield load and ultimate load increased by 17.33%and 18.34%.The diameter of high strength bolts increased from M20 to M30,the yield load and ultimate load increased by 40.43% and 35.38%.The number of high strength bolts increased from 6 to 18,the yield load and ultimate load increased by 18.31% and 9.65%.In engineering practice,it is suggested that the thickness of flange plate should be 30 mm,with 12 M27 high-strength bolts.
作者
王连广
许刚
刘姝
黄志武
WANG Lianguang;XU Gang;LIU Shu;HUANG Zhiwu(School of Resources&Civil Engineering,Northeastern University,Shenyang,China,110819;The Fourth Construction Engineering Co.Ltd.,China Construction Second Engineering Bureall,Tianjin,China,300457)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第5期778-785,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金青年基金项目(51808100)
辽宁省自然基金指导计划项目(2019-ZD_0004)
辽宁省自然科学基金项目(20170540303)。
关键词
预制外包钢混凝土梁
外法兰盘
钢板套筒
屈服荷载
极限荷载
precast steel-encased concrete beam
external flange plate
steel plate sleeve
yield load
ultimate load
