摘要
FRP型材-混凝土组合梁的变形受FRP型材的特性、组合梁截面粘结滑移的直接影响,须考虑:材料各向异性和纤维铺层方式对FRP型材自身刚度的影响、材料各向异性及FRP薄壁性引起的剪切变形对组合梁刚度的影响,及界面的滑移效应和掀起效应对组合梁刚度的影响.依据经典层合板理论、铁木辛柯梁的修正理论,以及组合梁抗弯刚度折减系数法的思路,综合分析各影响因素,提出了FRP型材-混凝土组合梁抗弯刚度计算方法.
At the service limit states,FRP profiles-concrete composite beam deformation is directly affected by the characteristics of FRP profiles and the interfacial bond-slip,thus the bending stiffness calculation could not directly use the calculation method of steel beams or concrete beam.It needs to consider：1）material anisotropy and fiber overlay modes on the stiffness of FRP profiles,2）material anisotropy and FRP thin-walled on stiffness of composite beam and 3）interface slip effect and off effect on stiffness of composite beam.Based on the classical lamination theory,Timoshenko beam correction theory,idea of reduction factor method,the above influencing factors are considered,and the flexural stiffness calculation method of FRP profiles-concrete composite beam is proposed.
出处
《武汉理工大学学报（交通科学与工程版）》
2016年第6期1094-1100,共7页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
