玻璃纤维布加固木柱抗压性能试验  

Experimental Study on Axial Compressive Behaviors of Timber Column Strengthened with GFRP

作　　者：郑涌林[1] 王全凤[1] 黄奕辉[1] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2012年第3期321-324,共4页Journal of Huaqiao University(Natural Science)

基　　金：澳门特别行政区科学技术发展基金资助项目(036/2007/A);福建省泉州市科技计划项目(2006G7);华侨大学科研基金资助项目(10HZR18)

摘　　要：通过对12根圆形截面木柱的轴心抗压试验,研究木柱的抗压极限承载力、破坏形态和荷载关系,并分析玻璃纤维布(GFRP)加固设置形式、用量对提高木柱的轴心抗压承载力的影响.试验结果表明:设置横向加固可以约束柱身的纵向开裂,同时进行纵向加固设置可以约束木柱的偏压失稳;在不同方式的GFRP粘贴加固下,木柱的抗压极限承载力得到了明显的提高,提高幅度介于21%～83%之间;采用GFRP包裹加固,能有效约束木柱的横向变形,显著提高木柱的延性.Based on the axial compressive experiments of 12 circular timber columns,the bearing capacity,failure mode and load-strain relationship were study.The influence of glass fiber reinforced polymer（GFRP） strengthening modes and quantity on the bearing capacity was investigated.The experimental result indicates that transverse strengthening can confine the vertical split in timber columns,and longitudinal strengthening can confine the eccentric compression instability;in different ways of strengthening with GFRP,the ultimate bearing capacity of the timber columns are evidently enhanced by 21%~83%;GFRP wrap can evidently confine transverse deformation in timber columns,improve its ductility.

关 键 词：玻璃纤维布 木柱 加固 轴心受压 承载力 

分 类 号：TU366.102[建筑科学—结构工程]