RESEARCH ON RESTORING FORCE MODEL OF STEELCONCRETE COMPOSITE BEAMS
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摘要: 根据5根不同剪力连接度钢-混凝土简支组合梁在低周竖向反复荷载作用下的恢复力特性试验结果,对不同剪力连接度组合梁的屈服荷载、屈服挠度、极限荷载、极限挠度及平台荷载进行分析,建立简支钢-混凝土组合梁正向加载和反向加载的骨架曲线模型,并提出统一的实用计算公式,根据试验结果,建立简支组合梁的荷载-挠度恢复力模型的滞回规则。Abstract: According to the test results of seismic resistant performance of five stee-l concrete composite beams under cyclic point concentrated loads, it was analyzed that the yield load and deflection, ultimate load and deflection, as well as, the flat load, the framework curve model of stee-l concrete composite beams under positive and negative load were proposed.The easily applied uniform expressions were also shown.According to the experimental results, the hysteretic rule of loaddeflection and restoring force model of stee-l concrete beams were established.
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