关键词: 振动与波, 楼板, 现场实测, 舒适度, 评价

Abstract: With the development of largespan, lighter and more flexible modern structures, much attention has been paid to the issues of structure vibration and structural comfortableness in vibration environment caused by human activities. Yet there is hardly a unified standard available for evaluation of the structural comfortableness. The issue of the structural comfortableness of a gymnasium under the condition of floor vibration is discussed in the paper. The computation model of a finite large floor is established and its natural frequencies under different boundary conditions and loading conditions are calculated. The natural frequencies and vibration accelerations of the floor under the most unfavorable conditions are measured. The computation result of floors natural frequencies is in consistent with that of site measurement. Thus, the rationality of the numerical calculation model is verified. Based on the measured acceleration values, comfortableness in the floor vibration environment is evaluated by using the international standard ISO 26311997. The evaluation results show that the floor can satisfy the demand of comfort. The method for comfortableness evaluation used in this paper can provide a reference for other engineering structures.

Key words: vibration and wave, floor, site measurement, comfortableness, evaluation