Analysis of Floor Slabs Vibration Response and Comfort Evaluation Under Single Person Walking Excitation
The peak vertical vibration acceleration is one of the important indicators for evaluating the vibration comfort of floor slabs.Based on the impulse form of single person walking excitation in the Swedish Steel Structure Association regulations,this paper introduces a calculation method for the first-order vertical vibration peak acceleration of floor slabs,which approximates the floor slabs as a single degree of freedom system and only considers the transient response under single person walking excitation.Taking a three-dimensional parking lot in Zhaotong City,Yunnan Province as an engineering example,the peak vertical vibration acceleration of two typical floor slabs under single person walking excitation was obtained through on-site measurement and finite element analysis.At the same time,theoretical calculation formulas were used to obtain the peak vertical vibration acceleration.Compare the measured values,finite element analysis values and theoretical calculation values,and evaluate the comfort of the two floor slabs using relevant Chinese regulations.The research results show that the peak vertical vibration acceleration of the two floor slabs in the parking lot under the single person walking excitation is 0.059m/s2 and 0.051m/s2 respectively,which do not meet the comfort requirements.The peak vertical vibration acceleration of the floor slabs obtained by the simplified method of single degree of freedom system is in good agreement with the measured values and finite element analysis values,and the comfort evaluation results obtained are consistent.
万方数据
维普
