Nested Copula Model for Overall Seismic Vulnerability Analysis of Multispan Bridges

Table 4

Probabilistic seismic demand models of bridge components.

Components	Lna	b	βD|IM	R	p value
0# abutment	2.490	1.419	1.340	0.709	1.63 × 10^−16
0# bearing	2.837	1.520	1.473	0.699	5.79 × 10^−16
1-1 pier	2.483	1.503	1.380	0.718	3.99 × 10^−17
1-2 pier	2.518	1.527	1.379	0.725	1.66 × 10^−17
2-1 pier	2.337	1.470	1.257	0.743	9.13 × 10^−19
2-2 pier	2.120	1.414	1.167	0.754	1.31 × 10^−19
3-1 pier	5.914	1.141	0.942	0.754	1.33 × 10^−19
3-2 pier	6.043	1.170	0.965	0.755	1.21 × 10^−19
4# abutment	5.914	1.141	0.942	0.754	1.33 × 10^−19
4# bearing	6.043	1.170	0.965	0.755	1.21 × 10^−19