摘要
以受均布荷载作用的简支组合梁为对象,研究了栓钉等柔性连接件塑性变形引起的纵向剪力重分布.根据连接件的受力状态,将界面受力全过程划分为弹性阶段、弹塑性阶段和破坏阶段,建立了相应的剪力重分布简化模型,并导出了界面纵向剪力和轴向力的计算公式.研究表明:考虑纵向剪力重分布时,在荷载较小的情况下,轴向力随荷载增大呈线性关系增大;当荷载较大时,轴向力随荷载增大呈非线性关系增大,最后趋于稳定.
By taking a simply supported composite beam under uniformly distributed load as an example, the redistribution of longitudinal shear force, induced by the plastic deformation of flexible connectors such as studs, was investigated. Based on the actual working condition of the connectors, the mechanical fuR-range of the interface of a steel-concrete composite beam was divided into elastic, elasto-plastic and failure stages. Simplified analytical models were established for every stage and corresponding formulae for calculating longitudinal shear force and axial force were derived. The research shows that axial force increases linearly with the increase of load when the redistribution is taken into account and load is less; then with the growth of load, the increasing is non-linear; lastly, it trends to be unchanged.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2006年第2期174-178,共5页
Journal of Southwest Jiaotong University
关键词
组合梁
纵向剪力重分布
轴向力
剪力连接件
composite beam
longitudinal shear-force redistribution
axial force
shear connector
