拉挤成型木芯FRP柱的拉压性能试验研究  

Experimental Research on Tension and Compression Properties of Pultruded FRP Profiles with Wood Core

作　　者：汪博 王欣诚 袁野[2] 林大伟[2] 张砚初 裴云鹏[2] 万里[2] Wang Bo;Wang Xincheng;Yuan Ye;Lin Dawei;Zhang Yanchu;Pei Yunpeng;Wan Li(Nanjing Metro Construction Co.,Ltd.,Nanjing 210017,Jiangsu,China;College of Civil Engineering,Nanjing Tech University,Nanjing 211816,Jiangsu,China)

机构地区：[1]南京地铁建设有限责任公司,江苏南京210017 [2]南京工业大学土木工程学院,江苏南京211816

出　　处：《工程与试验》2021年第1期40-41,54,共3页Engineering and Test

摘　　要：木芯FRP型材由纤维增强复合材料(FRP)外壳和轻木芯材组成,采用拉挤成型工艺制备。木芯FRP拉挤型材、木芯和FRP轴心抗拉试验结果表明:木芯FRP拉挤型材轴心承压时,虽然木芯与FRP外壳能共同工作,但木芯承受了大部分的压力,与FRP空管相比其抗压极限承载力提高了73%;木芯FRP拉挤型材在受拉时,木芯首先断裂,导致外壳局部受到螺栓作用而压溃,承载力下降。The FRP profile with wood core is composed of fiber reinforced polymer(FRP)and light wood core,which is prepared by pultrusion process.The axial tensile tests of pultruded FRP profiles with wood core,wood cores and FRP are carried out.The results show that when the wood core and FRP shell worked together,the wood core bore most of the pressure.Compared with the empty FRP pipe,the compressive ultimate bearing capacity of the pultruded FRP profile with wood core is increased by 73%.When the pultruded FRP profiles with wood core are in tension,the wood core is broken first,which leads to the collapse of the shell due to the bolt action,and the bearing capacity decreases.

关 键 词：木芯FRP拉挤型材 压缩性能 拉伸性能 

分 类 号：TB332[一般工业技术—材料科学与工程]