钢框架—组合楼板体系抗连续倒塌性能研究

Research on progressive collapse resistance of steel moment-frame with composite slabs

通过将一足尺两层2×2空间钢框架结构底层边跨中柱突然拉倒进行抗连续倒塌试验研究,采用了实体单元和壳单元相结合的建模方式,对试验框架进行了非线性动力有限元分析,试验结果和有限元分析结果表明:关键柱失效后,组合楼板可提供可靠拉结并形成新的荷载传递路径。

The progressive collapse resistance experiment of a two-storey steel frame was carried out by removing a peripheral column. The finite element model using solid and shell elements was developed to simulate the nonlinear dynamic process. The experimental and numerical results show that the composite slab can provide the horizontal tie force and develop the new load transfer path.