摘要
采用弹性理论分析方法推导出3种荷载作用形式下的纤维复合材料（FRP）-木材界面的黏结剪应力计算公式，并进行有限元模拟，发现二者的吻合度较高。同时进行了参数化分析，结果表明：影响FRP-木材界面黏结剪应力的因素主要有竖嵌FRP板布置条数、FRP配筋率、FRP与木材的弹性模量比值。在实际设计此类构件时选取适当的参数，有利于降低FRP-木材界面黏结剪应力。最后将竖嵌FRP增强方式与传统横嵌FRP增强方式的界面剪应力进行对比，发现此种竖嵌增强方式在相同影响参数下可减少53％-75％的FRP-木材界面黏结剪应力。
A formula of calculating the interfacial shear stress of fiber reinforced polymer （ FRP ） -glued beams under three-load conditions was derived according to linear elastic theory, the result matched closely with that of finite element analysis. Meanwhile, parameter analysis was carried out. The analysis showed that reinforcement ratio, elastic modulus ratio of FRP to glulam and the number of vertical embed- ded FRP were the main factors related to the maximum bond shear stress. In practical design, the proper selection of parameters reduced the FRP-wood interface bonding shear stress.The comparison of calculated results by the method with that of the traditional enhanced method showed that the new FRP enhanced method reduced 53%-75% of interfaeial shear stress.
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2014年第1期66-70,共5页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家高技术研究发展计划(863计划)(2012AA03A204)
关键词
胶合木
FLIP
竖嵌
黏结剪应力
解析分析
有限元分析
glued laminated timber （glulam）
fiber reinforced polymer （ FRP ）
vertical inlay
bond shear stress
analytical study
finite element analysis
