Natural Frequency of a New Kind of Pre-Fabricated Hollow Cross-Grids Floor System with Thermal Insulation Fill-up

Wen-xiao CUI, Zhong-fan CHEN, Wan-yun YIN, Shou-cheng LIU


In order to investigate the vibration performances of a new kind of precast hollow cross-grids floor system under human induced loads, a one-half scale floor model was designed and tested. The results of natural frequency show the floor system meets both the china’s criteria and ISO2631-2. Besides, FEM analysis was carried to comprehend the relationships of frequencies and different design parameters. Then a simplified prediction function of frequency was put forward for the new kind of floor system.


Precast hollow cross-grids floor system, Vibration serviceability, Natural frequency, ANSYS


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