摘要
为研究钢-混凝土双面组合连续梁的承载能力和耐久性以及在负弯矩区的工作机理,设计3片试验梁并进行模型试验,得出模型梁在加载状态下的荷载-挠度曲线.给出钢-混凝土双面组合连续梁截面刚度的简化计算方法,将极限承载力和跨中挠度变形的理论计算值与试验实测值进行对比.试验结果表明,双面组合梁(在传统的单面组合梁的内支座负弯矩区设置下翼缘钢筋混凝土板)能够很好地改善单面组合梁在负弯矩区的不利受力状态,提高结构的承载能力和耐久性.
In order to study the bearing capacity and durability and working mechanism in the negative moment area of double steel and concrete composite continuous beams,three test beams are designed and the model test is made,the load-deflection curve under the loading state is given.The section rigidity simplified calculation method of double steel and concrete composite continuous beams is given,the ultimate bearing capacity and deflection deformation of the theoretical calculation and the experimental values are compared.The results show that for the double composite beams （the lower flange reinforced concrete slabs are set in the inner brackets of traditional single composite beams in negative moment areas）,the adverse stress state in the negative moment area of single composite beams can be improved very well,the bearing capacity and durability of structure can be improved.
出处
《兰州理工大学学报》
CAS
北大核心
2013年第6期124-128,共5页
Journal of Lanzhou University of Technology
关键词
钢-混凝土双面组合梁
刚度
挠度
模型试验
简化计算
double steel-concrete composite beam
rigidity
deflection
model test
simplified calculating method
