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Advances in Bridge Engineering

Table 4 Regression coefficients of PSDMs for bridge components

From: Utilizing a new self-centering hysteresis model to assess the seismic vulnerability of a long-span cable-stayed bridge equipped with SMA wire-based roller bearings

Bridge System

Bridge

Component

ln(a)

b

βD/PGV

FS

Cable

-0.946

0.047

0.017

Pier

-0.553

1.016

0.221

Tower

-5.160

0.909

0.232

Roller

4.369

0.964

0.362

RS

Cable

-0.953

0.040

0.014

Pier

-0.561

0.976

0.235

Tower

-4.777

0.955

0.162

Roller

3.778

0.966

0.646

SMA-RBS

Cable

-0.935

0.051

0.018

Pier

-0.817

1.102

0.147

Tower

-5.166

0.924

0.225

SMA-RB

3.738

0.869

0.708

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