(中南大学铁道校区土木建筑学院  长沙 410075)

［提要］  报道了9根不同剪力连接度钢-混凝土组合梁(5根简支组合梁，4根连续梁)的低周竖向反复荷载部分试验研究结果。对钢-混凝土组合梁的破坏形态、滞回规律、耗能能力、刚度退化规律等抗震性能进行了深入的分析，重点探讨了不同剪力连接度对钢-混凝土组合梁抗震性能的影响。

［关键词］  钢-混凝土组合梁  抗震性能  剪力连接度  试验研究

Effect of Shear Connection Degree on Seismic Resistant Performance of Steelconcrete Composite Beams/Authors:Jiang Lizhong,Yu Zhiwu,Cao Hua,Liu Zhongwu(Civil Arch.Eng.College,Central South Universty,Changsha 410075,China)

Abstract:The test results of seismic resistant performance of steel-concrete composite beams under cyclic points concentrated loads are introduced including five single-span steel-concrete composite beams and four two-span steel-concrete composite continuous beams (5 SCB and 4 CCB). It deeply analyzes the difference of the failure mode,load and deformation curve,ductility,the degradation of strength and rigidity,deformation-rehabilitation capacity etc. The effect of shear connection degree is researched on the seismic resistant performance of steel-concrete composite beams.

Keywords:steel-concrete composite beam; seismic resistant performance; shear connection degree; experimental research

*国家自然科学基金资助项目(50208018)。