方钢管-木组合柱轴心受压试验研究  

Experimental study on axial compression of square steel pipe-wood composite column

作　　者：郝勇[1,2] 胡鹏程 孙钰昆 翁维素 徐怀兵[1] 李岩松 HAO Yong;HU Pengcheng;SUN Yukun;WENG Weisu;XU Huaibing;LI Yansong(Hebei University of Civil Engineering and Architecture,Zhangjiakou 075000,China;Hebei Key Laboratory of Diagnosis,Reconstruction and Anti-disaster of Civil Engineering,Zhangjiakou 075000,China)

机构地区：[1]河北建筑工程学院,河北张家口075000 [2]河北省土木工程诊断、改造与抗灾重点实验室,河北张家口075000

出　　处：《河北建筑工程学院学报》2024年第4期74-82,共9页Journal of Hebei Institute of Architecture and Civil Engineering

摘　　要：为研究方钢管-木组合柱的轴心受压性能,进行了钢木组合柱轴压试验。探究不同长细比方钢管-木组合柱的荷载-应变关系及荷载-位移关系,分析其受力机理、破坏形态,计算钢木组合柱的极限承载力,并将纯钢和纯木构件的承载力与钢木组合柱的承载力进行对比。结果表明:各试件的破坏模式主要由强度控制。随着长细比的增加,钢木组合柱的峰值荷载、刚度、延性逐渐减小。借鉴其他学者对组合构件承载力的计算方法,采用文献[17]的方法计算此类钢木组合构件的承载力更好。将纯木和纯钢构件的承载力与钢木组合的承载力进行对比,钢木组合后的承载力是纯钢构件承载力的1.88~2.95倍,是纯木构件承载力的3.3~8.54倍,相较于两者承载力叠加后提高了21.7%~110.5%,反映了钢木两种材料组合后发挥出1+1>2的优势。In order to study the axial compressive performance of the square steel pipe-timber composite column,the axial compression test of the steel-wood composite column was carried out.The load-strain relationship and load-displacement relationship of different long and slender steel pipe-timber composite columns were explored,the stress mechanism and failure mode were analyzed,the ultimate bearing capacity of the steel-wood composite column was calculated,and the bearing capacity of pure steel and pure wood components was compared with that of the steel-wood composite column.The results show that the failure mode of each specimen is mainly controlled by the strength.With the increase of slenderness ratio,the peak load,stiffness and ductility of the steel-wood composite column gradually decrease.Drawing on the calculation methods of other scholars on the bearing capacity of composite components,it is better to use Fan Yunlei's method to calculate the bearing capacity of such steel-wood composite components.The bearing capacity of pure wood and pure steel components is 1.88~2.95 times that of pure steel and wood components,and 3.3~8.54 times that of pure wood components,which is 21.7%~110.5%higher than that of the two materials,reflecting the advantages of 1+1>2 after the combination of steel and wood.

关 键 词：方钢管-木组合柱 轴心受压 长细比 极限承载力 试验研究 

分 类 号：TU5[建筑科学—建筑技术科学]