Baseline-Free Detection Method for Change of Lateral Stiffness of High-Rise Building Based on Statistical Moment Curvature

Table 1

Details of damage cases.

Case	Damage location	Node number	Stiffness reduction
1	—	—	—
2	Element 15	14-15	5%
3	Element 4, 23	14-15	10%
4	Element 18, 19	17–19	15%
5	Element 14, 15, 16	13–16	20%
6	Element 5	4-5	20%
7	Element 6	5-6	10%
8	Element 5, 6	4–6	20%