A large-span steel–concrete composite beam with precast hollow core slabs (CBHCSs) is a relatively new floor structure that can be applied to various long-span structures. However, human-induced vibrations may present serviceability issues in such structures. To alleviate vibrations, both the walking forces excited by humans and the associated floor responses must be elucidated. In this study, 150 load–time histories of walking, excited by 25 test participants, are obtained using a force measuring plate. The dynamic loading factors and phase angles in the Fourier series functions for one-step walking are determined. Subsequently, walking tests are performed on seven CBHCS specimens to capture the essential dynamic properties of mode shapes, natural frequencies, damping ratios, and acceleration time histories. The CBHCS floor system generally exhibits a high frequency (> 10 Hz) and low damping (damping ratio < 2%). Sensitivity studies using the finite element method are conducted to investigate the vibration performance of the CBHCS floor system, where the floor thickness, steel beam type, contact time, and human weight are considered. Finally, analytical expressions derived for the fundamental frequency and peak acceleration agree well with the experimental results and are hence proposed for practical use.

预制空心板大跨度钢-混凝土组合梁（CBHCSs）是一种较新的楼盖结构，适用于各种大跨度结构。然而，人为引起的振动可能会在此类结构中出现适用性问题。为了减轻振动，必须阐明人类激发的步行力和相关的地板反应。在这项研究中，使用力测量板获得了由 25 名测试参与者激发的 150 次负载时间步行历史。确定了用于单步行走的傅里叶级数函数中的动态加载因子和相位角。随后，对七个 CBHCS 样本进行了步行测试，以捕获振型、固有频率、阻尼比和加速度时间历程的基本动态特性。CBHCS地板系统一般表现出高频（>10赫兹）和低阻尼（阻尼比<2%）。使用有限元方法进行灵敏度研究以研究 CBHCS 地板系统的振动性能，其中考虑了地板厚度、钢梁类型、接触时间和人体重量。最后，推导出的基频和峰值加速度的解析表达式与实验结果吻合良好，因此建议用于实际应用。