人-结构系统的水平耦合振动特性实验研究

针对人-结构系统问题,建立了人-结构振动实验平台,研究人(静止站立)-结构系统水平振动特性。对比平台结构和质量块-结构系统,表明附加质量块的质量块-结构系统水平自振频率会显著降低;对比平台结构和人(静止站立)-结构,表明人-结构系统的水平自振频率会降低,但与重量相当的质量块-结构系统相比,降低幅度相对较小;对比平台结构和人-结构系统以及质量块-结构系统和人-结构系统的前三阶阻尼比,表明人静止站立在结构上,会对结构产生明显的阻尼效果,并且当考虑结构上人的动态特性作用时,只将人简化为质量块附加在结构上是不正确的。

Experiment Investigation of Human-structure interaction in lateral directions

For human- structure system, the establishment of the human- structure vibration experiment platform, human stand (static) - horizontal vibration characteristics of structure system.Contrast platform structure and quality structure system, show that the quality of added mass block - level structure system natural frequency of vibration will be significantly reduced;Contrast platform structure and stand (static) - structure, suggests that people - the level of structure system natural frequency decreases, but with weight rather than the quality of the piece - structure system, reduce the amplitude is relatively small;Contrast platform structure and people - pieces - structure system and the structure system and quality structure system of the first three order damping ratio, show that people still standing on the structure, will have obvious damping effect on the structure, and when considering the dynamic characteristics of structure here, only attach were simplified as quality piece in structure is not correct.