Full-Scale Experimental Investigation of the Static and Dynamic Stiffness of Prestressed Concrete Girders

Table 8

Dynamic stiffness of the test girders under different damage conditions.

Girder	Damage degree	(Hz)		(%)
Z1	D0/LC0	3.613	1.210	0
	D1/LC1	3.516	1.146	5.3
	D2/LC2	3.418	1.083	10.6
	D3/LC3	3.320	1.022	15.6
	D4/LC4	3.320	1.022	15.6
Z2	D0/LC0	3.516	1.146	0
	D1/LC1	3.418	1.083	5.6
	D2/LC2	3.320	1.022	10.9
	D3/LC3	3.223	0.963	15.9
	D4/LC4	3.223	0.963	15.9
B1	D0/LC0	3.516	1.146	0
	D1/LC1	3.418	1.083	5.6
	D2/LC2	3.320	1.022	10.9
	D3/LC3	3.223	0.963	15.9
	D4/LC4	3.223	0.963	15.9