(a) (b)

At ends (supports),X = 0

)r (x) = )s)b (x) )r (x)

At X = x

)s(a)

Rigid slab

Kw

)s

Bottom flange of girdersL, bridge span

)r (x)

)b (x)

x

(b)

-100 -80 -60 -40 -20 0 20 40 60 80 100Drift (mm)

200

100

0

-100

-200

Lat

eral

load

(kN

)(a)

40 60 80 100Drift (mm)

-30 -20 -10 0 10 20 30 40Drift (mm)

800

600

400

200

0

-200

-400

-600

-800

(b)

Lat

eral

load

(kN

)

800

700

600

500

400

300

200

00 10 20 30 40 50

End cross frame transverse displacement (mm)

End

she

ar (k

N)

100

Single span bridge model20 in. slice model

580 1342 1342 580

Top chord 2-64×13 mm PL

Flonge PL 19×184 mm

22 mm Dia. A490

Web PL 10×572mm

16 mm Dia. A49010 mm PLStiffener(Typ. each side)

L 25×25×5DiagonalsTyp.V5 JL 50×38×5

Bottom chord

16 mmDia. A490

Elastomeric bearing withtransverse restraints

Top chord built up T sectionEmbedded deck

Bottom chord

Elostomeric bearingtransverse restraints

50H38H5