Methodology and Application of Safety Evaluation of Reinforced Concrete Girder Bridges during Earthquakes

Table 3

Safety evaluation index of bridge pier.

Damage state	I Basically intact	II Slight damage	III Medium damage	IV Severe damage	V destruction
State description	Crack	Longitudinal reinforcement yield	Local institutions began to form	Local institutions is completely formed	Strength degradation
Allowable displacement angle	D ＜ 0.40%	0.40% ≤ D ＜ 0.65%	0.65% ≤ D ＜ 1.25%	1.25% ≤ D ＜ 2.85%	D ≥ 2.85%