Modeling of Temperature Effect on Modal Frequency of Concrete Beam Based on Field Monitoring Data

Table 1

Statistics of first four modal frequencies.

Mode	Max; (Hz)	Min; (Hz)	Mean; (Hz)	Relative variation (%)	Standard deviation (Hz)	Variation coefficient (%)
1st	56.25	47.50	50.51	17.32	2.16	4.28
2nd	185.31	123.49	148.38	41.70	17.04	11.48
3rd	575.31	462.5	499.63	22.58	32.67	6.54
4th	797.50	693.13	730.30	14.29	29.56	4.05

Note. Relative variation = ()/Mean 100%.