Seismic Damage Detection of Moment Resisting Frame Structures Using Time-Frequency Features

Table 1

Location of nonlinearity and input ground motion.

Case	Yielding stress at weak component	Input ground motion
1	Beams and columns 205 MPa	PGA = 28.6 gal El Centro
2	Beams at 1^st story 180 MPa, others 300 MPa	PGA = 429 gal El Centro
3	Columns at 1^st story 180 MPa, others 300 MPa	PGA = 429 gal El Centro
4	Beams and columns at 1^st story 180 MPa, others 300 MPa	PGA = 429 gal El Centro
5	Beams and columns 205 MPa	PGA = 715 gal El Centro
6	Beams and columns 205 MPa	PGA = 11.6 gal Northridge
7	Beams at 1^st story 180 MPa, others 300 MPa	PGA = 348 gal Northridge
8	Columns at 1^st story 180 MPa, others 300 MPa	PGA = 348 gal Northridge
9	Beams and columns at 1^st story 180 MPa, others 300 MPa	PGA = 348 gal Northridge
10	Beams and columns 205 MPa	PGA = 464 gal Northridge