Operational Modal Analysis: A Tool for Assessing Changes on Structural Health State of Historical Constructions after Consolidation and Reinforcement Works—Jura Chapel (Jerez de la Frontera, Spain)

Table 2

OMA results after the works: natural frequencies (f), damping ratios (ξ), and standard deviation (std).

Mode number	SSI				EFDD				MAC
	f (Hz)	std (f)	ξ (%)	std (ξ)	f (Hz)	std (f)	ξ (%)	std (ξ)
Extrados of the vault
1	—	—	—	—	—	—	—	—	—
2	3.28	0.02	3.31	0.44	3.27	0.01	2.34	0.71	0.99
3	4.81	0.03	2.31	0.69	4.82	0.03	1.06	0.66	0.89
4	7.20	0.03	3.01	0.34	7.22	0.14	2.72	1.46	0.85
5	8.97	0.16	2.70	0.42	8.97	0.08	2.42	1.56	0.84
6	10.4	0.01	1.32	0.51	10.4	0.09	2.15	1.72	0.99
Intrados of the vault
1	—	—	—	—	—	—	—	—	—
2	3.24	0.01	3.33	0.59	3.23	0.01	2.03	0.37	0.99
3	4.77	0.02	2.58	0.60	4.77	0.03	0.96	0.32	0.92
4	7.24	0.09	4.82	0.62	7.20	0.04	0.77	0.31	0.87
5	8.96	0.02	3.82	0.64	9.01	0.11	1.79	0.01	0.81
6	10.4	0.04	0.40	0.52	10.4	0.07	0.12	0.34	0.99