钢-混凝土叠合板组合梁抗震性能的试验研究

Seismic behaviour of composite steel concrete beams

为研究钢—混凝土叠合板组合梁在低周反复荷载作用下的变形和耗能性能，完成了６根钢—混凝土叠合板组合梁在低周反复荷载作用下的试验。对试验结果进行了讨论和分析。试验研究结果表明，钢—混凝土叠合板组合梁具有良好的整体性能及抗震性能，文中给出了组合梁的变形延性指标、刚度折减系数等计算公式，结果对于钢—混凝土叠合板组合梁的抗震设计具有较好的参考价值。

In order to study the performance of composite steel concrete beams with combined precast slabs and concrete sast in situ under the low cyclic loading, Experiments are conducted of six specimens of composite steel concrete beams. The types of loading include repeat loading and cyclic loading. The loading capacity and deformation performance of composite steel concrete beams under repeat and cyclic loading are analyzed and discussed in detail. Test results show that composite beams with combined precast slabs and concrete cast in situ behave as composite beams with all concrete cast in situ and possess excellent seismic performance. Deformation ductility ratio and reduction coefficient of rigidity are proposed. The research results are valulable in seismic designs of composite steel concrete beams.