BFRP与木材的有效粘结长度的试验  

Experiment on the Effective Bond Length Between BFRP Sheet and Wood

作　　者：庄荣忠[1] 杨勇新[1] 

机构地区：[1]华侨大学土木工程学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2010年第1期74-77,共4页Journal of Huaqiao University(Natural Science)

基　　金：国家科技攻关(国际合作)项目(2005DFBA0002);华侨大学科研基金资助项目(04BS204);泉州市科技计划项目(2006G7)

摘　　要：研究玄武岩纤维布(BFRP)与木材间的受力性能,分析BFRP与木材间的粘结应力分布规律.结果表明,加载初期,纤维布上的应变主要存在于加载端附近,当荷载逐渐增加时,应变也向加载远端增大;随着与加载点距离的增加,粘结应力逐渐降低;随着荷载的增加,粘结应力峰值位置向远离加载点方向稍有移动;在含水率为16.3%条件下,BFRP与木材的有效粘结长度为100 mm.粘贴玄武岩纤维布是一种加固木结构的有效方法,木材本身纤维构造对BFRP加固和增强木材的极限粘结荷载有着直接的影响.The mechanical properties and distribution of bond stress between basalt fiber reinforced polymer （BFRP） sheet and wood are investigated experimentally. The strain of sheet mainly occurs in loading end in the initial load. With the increase of load, the strain extends to the remote end; the bond stress gradually reduces from the loading end to the remote end; the peak bond stress locates slightly away from the loading end. For 16. 3% moisture content, the effective bond length between BFRP and wood is 100 mm. Bonding BFRP sheet is an effective method to strengthen wood structure, the structure of wood fiber influences directly the BFRP strengthening and the ultimate bond load.

关 键 词：玄武岩纤维布 木材 粘结应力 有效粘结长度 单剪试验 

分 类 号：TU599.026[建筑科学—建筑技术科学]