huangyhg

natural frequency of composite concrete slabs
check out steel tips - vibration - september 1991
"design practice to prevent floor vibrations" steel tips issue by farzad naeim, sep. '91 (1.24mb pdf). it can be found at
i suggest three solutions for you:
1-do a vibration test on your slab if it is already constructed.
if shear connections are adequately designed, the followings can also be done:
2- consider equivalent beams wide center to center of the pannels or the effective width according to your design code, whichever is smaller, then calculate the equivalent section properties of the composite beam and calculate its vibrational behavior theoretically.
3-perform a fem dynamic analysis using any conventional software, say sap2000 or sap90, etc.
good luck

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