碳纤维布加固木梁抗剪性能的试验研究  

EXPERIMENTAL STUDY ON SHEAR BEHAVIOR OF TIMBER BEAM STRENGTHENED WITH CFRP SHEET

作　　者：谢启芳[1] 薛建阳[1] 赵鸿铁[1] 隋龑[1] 张风亮[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2012年第6期88-91,共4页Industrial Construction

基　　金：国家自然科学基金资助项目(51108373);国家文物局文物保护科学和技术研究课题(20110123);陕西省教育厅科研计划项目(11JK0939)

摘　　要：为了分析木梁加固后的力学性能,对碳纤维布加固木梁抗剪性能进行了试验研究,得到了木梁剪切破坏的破坏形态、荷载-挠度曲线及荷载-应变关系等性能。试验结果表明:木梁剪切破坏通常为顺纹错动剪切破坏;顺纹错动剪切破坏具有很好的延性,而弯曲破坏是典型的脆性破坏;支座及加载点附近的碳纤维布直至破坏时也没有出现拉应变,梁端木材承受横向拉力。To analyse the mechanical property, the experimental study on timber beam strengthened with CFRP sheet were performed. The shear behaviors, such as failure patterns in shear, load-deflection curves and relationship between load and strain were obtained. The results showed that the failure patterns in shear were usually shear failure along the grain. The ductility of failure along the grain was very good, and the flexural failure was a typical brittle failure. The CFRP sheets adjacent to the supports and loading points were subjected to compression until failure.

关 键 词：木梁 碳纤维布加固 顺纹错动剪切破坏 

分 类 号：TU366.2[建筑科学—结构工程]