摘要
木-混凝土组合梁是在木结构和混凝土结构基础上发展的一种新型结构构件,其通过剪力连接件将木梁和混凝土翼板连接成整体共同受力,木梁受拉,混凝土翼板受压,剪力连接件传递交界面上的纵向剪力。文章在试验研究的基础上,结合数据分析,考虑交界面相对滑移对组合梁抗弯刚度及抗弯承载能力的影响,推导了组合梁在均布荷载、两点对称荷载及单点集中荷载工况下的抗弯刚度和挠度计算公式。同时提出了考虑滑移效应影响的组合梁弹性抗弯承载力的计算公式,并将计算结果与试验结果进行比较,吻合良好。
Timber-concrete composite beam is a new type of structure member which is based on timber structure and concrete structure.Shear connectors are used to combine the timber beam and concrete slab as a whole,while timber beam bears tension,concrete slab bears compression and shear connectors transfer the longitudinal shear force across the timber-concrete interface.The calculation formulas of flexural stiffness and deflection under three kinds of load： one-point distributed load,two-point symmetry distributed load and uniformly distributed load have been deduced on the base of test results,considering the influence of the relative slip.Furthermore,the influence of different types of shear connectors on the composite action has been analyzed.It is found that the calculated results agree well with the test results.
出处
《江苏建筑》
2013年第2期34-36,共3页
Jiangsu Construction
关键词
木-混凝土组合梁
滑移效应
抗弯刚度
timber-concrete composite beams
slip effect
bending stiffness
