Damage of Bridges Resulting from Surface Rupture of Faults in the ...

Acceleration (g)
Acceleration (g)
Acceleration (g)
Acceleration (g)
0.9
0.6
0.3
0
-0.3
-0.6
-0.9
0.9
0.6
0.3
0
-0.3
-0.6
-0.9
0.3
0
Bolu
L
Max=0.76G
Bolu
T
Max=0.82G
Bolu
V
Max=0.20G
-0.3
0 5 10 15
Time (s)
20 25
2.5
2
1.5
1
0.5
L
T
V
Acceleration (g)
Acceleration (g)
Acceleration (g)
Acceleration (g)
0.6
0.3
0
-0.3
-0.6
0.6
0.3
0
-0.3
-0.6
0.6
0.3
0
-0.3
Duzce
L
Max=0.52G
Duzce
T
Max=-0.42G
Duzce
V
Max=0.35G
-0.6
0 5 10 15 20 25
Time (s)
2.5
0
0 1 2 3 4 5
0
0 1 2 3 4 5
Period (sec)
Period (sec)
(a) Bolu
(b) Duzce
Fig.11 Ground Accelerations in the Duzce Earthquake
2
1.5
1
0.5
L
T
V
the fault crossed a two span simply supported
prestressed concrete overpass (No. 1 Overpass, refer
to Fig. 3) at its south abutment, after crossing the
Motorway at about 50 m west of the overpass as
shown in Photo 7. However, the damage was minor,
i.e., only about 50mm-shear deformation of
elastomeric bearings occurred resulting from the
tectonic ground movement.
At a 3 span simply supported overpass (No. 2
Overpass, refer to Fig. 3), located about 400m east
of No. 1 Overpass, the deck collided with the north
abutment, resulting in crush of a part of concrete
parapet wall. About 20-30mm-shear deformation of
elastomeric bearings occurred due to the fault
movement. A 3 span simply supported overpass
located about 400m west of the Arifiye Overpass
(No. 4 Overpass, refer to Fig. 3) suffered only
minor damage at the parapet wall of the north
abutment, although the fault crossed nearby at the
south abutment.
The short wall piers, the short bridge span and the
large constrain of the rigid abutments on the deck
response prevented the build-up of the bridge
response in the earthquake.
(4) Sakarya Center Bridge
Sakarya Center Bridge, crossing Sakarya river,
on a regional road (No. 5 bridge, refer to Fig. 3)
collapse as shown in Photo 8. The bridge was 8
span simply supported girders with two Gerber
hinges at the center. It was 92m long
(10m+6x12m+10m). They were supported by steel
piles as shown in Fig. 10. It was built 30-35 years
ago. The decks collapsed with a span each on both
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