Seismic Performance Evaluation of Typical Piers of China’s High-Speed Railway Bridge Line Using Pushover Analysis

Table 6

Comparisons of the calculation efficiency of the Pushover analysis and the IDA.

Method	Ne	Ng	Ncase	Tcom	Ttotal = Ne × Ng × Ncase × Tcom	Efficiency
Pushover	- -	1/0.05	22	161 sec	70840 sec	1:88
IDA	10	1/0.05	22	1421 sec	6252400 sec

Here, N_e is the number of the selected seismic records on each site; N_g is the number of the seismic records scaled from 0.05 g to 1.0 g with an increment of 0.05 g; N_case is the total number of the HSR pier models; and T_com is the required calculation time for seismic analysis of the HSR pier model (sec).