摘要
为分析高层建筑结构中钢-混凝土组合梁在罕遇地震作用下的非线性受力行为,该文采用截面分析法,并结合相关试验数据,得到了梁柱节点区组合梁的承载力及刚度计算公式,提出了考虑组合作用的钢-混凝土组合梁塑性铰滞回模型。分析表明,该滞回模型的计算结果与试验结果吻合良好,可以考虑组合梁在正负弯矩交替的情况下节点区混凝土翼板局部受力和钢筋的影响,物理概念清晰,计算也比较简单,能够为如何合理利用钢-混凝土组合梁的组合作用提供参考。
A plastic hinge model of steel-concrete composite beams was developed to investigate the nonlinear behavior of tall buildings with steel-concrete floor during earthquake loads using the section analysis method combined with test data. The hysteretic model is compared with cyclical load experimental data. The predicted strength, stiffness, and energy dissipation ability fit well with the experimental results. This model allows for the effect of the concrete compression and the yielding of the reinforcing bars adjacent to the beam-column joint during reversed cyclical moments. The model has clear mechanical meaning and entails straightforward calculations to provide accurate analysis of composite beam behavior for seismic analyses of tall buildings.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第3期329-332,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50438020)
关键词
钢-混凝土组合梁
抗震分析
往复荷载
滞回模型
steel-concrete composite beam
seismic analysis
cyclic load
hysteretie model
