摘要
研究实际工程中大跨度型钢混凝土梁-柱斜交角节点的抗震性能,为工程设计提供依据。借助有限元分析软件开展数值模拟试验,分析不同参数对角节点抗震性能的影响,并建立大跨度型钢混凝土梁-柱斜交角节点受剪承载力计算公式。梁-柱斜交角节点的破坏形态与正交角节点类似,但极限承载力却有所下降。斜交角节点的承载力与混凝土强度成正比,与轴压比成反比;斜交角节点的延性与混凝土强度和轴压比均成反比。当斜交角度不超过105°时,角节点抗震性能变化不大;当斜交角度达到135°时,角节点抗震承载力下降约20%。当轴压比不大于0.5时,斜交角节点可获得较好的抗震性能。斜交角节点受剪承载力公式的计算结果与有限元分析结果误差在5%以内,吻合良好。
The seismic performance of large span steel-concrete beam-column skew joint in actual engineering was studied to provide a basis for engineering design.Numerical simulation tests were carried out with finite element analysis software to analyze the influence of different parameters on the seismic performance of diagonal nodes,and a calculation formula for shear bearing capacity of large-span steel-concrete beam-column oblique angle nodes was established.The findings indicated that the failure mode of the beam-column oblique angle joint was similar to that of the orthogonal angle joint,but the ultimate bearing capacity of the oblique angle joint decreased.The bearing capacity of oblique angle joints was proportional to the concrete strength,and inversely proportional to the axial compression ratio.Furthermore,the ductility of oblique angle joints was inversely proportional to the concrete strength and axial compression ratio.When the oblique angle didn't exceed 105°,the seismic performance of the angle joint was similar to that of the orthogonal joint.When the oblique angle reached 135°,the seismic bearing capacity of the corner joint decreased by 20%.When the axial compression ratio was no more than 0.5,the oblique angle joint achieved ideal seismic performance.The formula's calculation results for the shear bearing capacity of the diagonal angle joint were in good agreement with the finite element analysis with differences results within 5%.
作者
熊晓莉
胡鹏
赵志宏
张哲
海闯
XIONG Xiaoli;HU Peng;ZHAO Zhihong;ZHANG Zhe;HAI Chuang(College of Civil Engineering and Architecture,He’nan University of Technology,Zhengzhou,China,450001;China Construction Seventh Engineering Division Co.Ltd.,Zhengzhou,China,450016)
出处
《沈阳建筑大学学报(自然科学版)》
北大核心
2025年第4期473-484,共12页
Journal of Shenyang Jianzhu University(Natural Science)
基金
河南省科技攻关计划项目(212102310562)
中建七局科技研发课题(CSCEC7b-2023-z-03)。
关键词
型钢混凝土
梁柱节点
正交梁
斜交梁
抗震性能
受剪承载力
steel reinforced concrete(SRC)
beam-column joint
orthogonal beam
oblique beam
seismic performance
shear bearing capacity
作者简介
熊晓莉(1981-),女,副教授,博士,主要从事钢结构设计理论等方面研究。
