【摘要】 为研究冷弯薄壁型钢梁-水泥纤维板组合楼盖的振动性能，开展了该组合楼盖足尺试件的振动性能试验，并采用ABAQUS有限元软件构建了试件模型，通过对比试验结果与有限元结果验证了模型的合理性。在试验基础上，对冷弯薄壁型钢梁-水泥纤维板组合楼盖的固有频率、不同工况激励下的组合楼盖振动响应以及组合楼盖振动舒适度的变化特征进行了分析。利用ABAQUS有限元模型进行参数化分析，探究边界条件、水泥纤维板厚度、檩条间距、边梁形状等参数对组合楼盖振动性能的影响。结果表明：冷弯薄壁型钢梁-水泥纤维板组合楼盖的固有频率满足相关规范的限制要求，但峰值加速度不满足相关规范限值，振动舒适度还有待提升；适当增强边界约束，增大水泥纤维板厚度，减小檩条间距，优化组合楼盖边梁横截面形状均可提升组合楼盖的振动舒适度；研究成果可为冷弯薄壁型钢梁-水泥纤维板组合楼盖的设计应用和方案优化提供参考。更多还原

【Abstract】 In order to study the vibration performance of cold-formed thin-walled steel beam-cement fiberboard composite floors, the full-scale specimens of the composite floors were tested and analyzed by the finite element(FE) method using ABAQUS. The test and FE results were compared to verify the rationality of the FE model. Based on the test results, the natural frequency of the cold-formed thin-walled steel beam cement fiberboard composite floor, the vibration response of the composite floor under different working conditions and the variation characteristics of the vibration comfort of the composite floor were analyzed. The finite element software ABAQUS was further used to analyze the parameters of the composite floor model, and the effects of boundary conditions, cement fiber board thickness, purlin spacing, different edge beam shapes and other factors on the vibration performance of the composite floor were explored. The results show that the natural frequency of the cold-formed thin-walled steel beam-cement fiberboard composite slabs meets the limit requirements of the relevant specifications, the peak acceleration does not meet the limit values of the relevant specifications, and the vibration comfort needs to be improved. Enhancing boundary constraint, increasing the thickness of cement fiberboard, reducing the purlin spacing of composite floors and changing the cross-sectional shape of side beam of composite floor can improve the vibration comfort of composite floors. The research results can provide scheme optimization and reference for the design and application of cold-formed thin-walled steel beam cement fiberboard composite floor.更多还原