Effect of Temperature Variation on Modal Frequency of Reinforced Concrete Slab and Beam in Cold Regions

Table 2

Statistics of identified modal frequencies.

Structure	Mode	Variation range (Hz)	Mean value (Hz)	(%)
Slab	1	1.518	19.198	7.907
	2	7.310	83.971	8.705
	3	14.969	185.870	8.053
	4	19.634	321.689	6.103
Beam	1	3.9053	51.807	7.538
	2	18.250	145.299	12.56
	3	46.252	504.599	9.167
	4	37.565	742.047	5.062