玄武岩纤维增强材料U型箍加固对新疆杨木梁抗弯性能影响的试验研究  

EXPERIMENTAL STUDY OF THE INFLUENCE OF BFRP CLOTH U HOOP ON FLEXURAL PROPERTIES OF XINJIANG POPLAR BEAMS

作　　者：韩霞[1] 刘清[1] 徐瑞[1] 沈华[1] 

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047

出　　处：《工业建筑》2015年第6期43-46,共4页Industrial Construction

基　　金：国家自然科学基金资助项目(51368057);新疆维吾尔自治区高校科研计划科学研究重点资助项目(XJEDU2012S08);新疆维吾尔自治区自然科学基金重点资助项目(2012211A006)

摘　　要：选取8根采用玄武岩纤维布(BFRP)U型箍加固的新疆杨木梁进行抗弯试验,针对U型箍的布置数量及位置的变化,对比分析梁的破坏现象,中性轴位置变化、承载力、挠度等性能指标。结果表明:梁未粘贴U型箍时,梁底纤维布剥落破坏;粘贴U型箍后具有一定锚固作用,随着U型箍的数量及位置变化,对梁的受弯破坏、承载力和挠度具有不同程度的影响,并且中性轴位置移动一致,均有向受压区移动的趋势。Selecting 8 Xinjiang poplar beams reinforced basalt fiber cloth( BFRP) U-type hoop and study flexural properties according to the changes of the U-shaped hoop number and location of the comparative,analyze the damage phenomena,neutral axis position changes,the bearing capacity,deflection and other performance indicators. The results showed that the BFRP sheet on the beam bottom peeled off when U hoop was not pasted on the beam,pasting U-hoop had a certain anchor role,the changes in number and location of the U-shaped hoop had different effect on the beam flexural bearing capacity and deflection,and consistent move of the neutral axis position had a tendency to move towards the compression zone.

关 键 词：新疆杨木梁 U型箍 底部粘贴 抗弯性能 加固梁 

分 类 号：TU366.2[建筑科学—结构工程]