EAST JAPAN RAILWAY COMPANY
Kotofusa TAKAGI
Director
Technical Center
Research and Development Center
East Japan Railway Company
High Speed 2008
Contents
１．Shinkansen Network in Japan
２．A Country with Frequent Earthquakes; “Japan”
３．Niigata Chuetsu Earthquakes and Damage of
Shinkansen
４．Basic Policy and Whole Image of Earthquake
Measures
５．A Process of Seismic Measures for the Existing
Structures
High Speed 2008
Shinkansen Network in Japan
Kyusyu Shinkansen 137.6km
Sanyo Shinkansen
644.0km
JR
JR West
West
JR
JR Kyusyu
Kyusyu
Tohoku Shinkansen
631.9km
After
extension 3045.0km
Total length
2663.0km JR
JR East
East
JR
JR Central
Central
Jouetsu Shinkansen
303.6km
Nagano Shinkansen 117.4km
Yamagata Shinkansen 148.6km
Akita Shinkansen 127.3km
Tokaido Shinkansen
552.6km
Extension line
（Under
construction）
82km
Shinkansen and ordinary line
JR East
1328.8km
Extension line
（Under
construction）
130km
JR Kyusyu
137.6km
JR West
644.0km
JR Central
552.6km
Extension line
（Under
construction）
170km
High Speed 2008
A Country with Frequent Earthquakes ;
“Japan”
The occurrence of earthquakes in the world
The number of times that earthquakes with
M6.0 or larger was occurred in 1994～2003
High Speed 2008
A Country with Frequent Earthquakes ;
“Japan”
South Hyogo Earthquake （Jan,1995）
Collapse of Viaduct（Hanshin Expressway）
Collapse of Viaduct （Rokkoumiti
High Speed Stati
2008
Niigata Chuetsu Earthquakes and
Shinkansen
Damage of
Niigata Chuetsu
Date：OctoberEarthquakes
23, 2004
Data：Magnitude of 6.8
Depth of hypocenter was13km
Number of aftershock was 877 times.
It was the first time shinkansen was
derailed by the earthquake.
No casualties （154 persons boarding）
Point of
derailment
Seismic station in
Oziya
1,008gal
Niigata
Nagaoka
Seismic station in
Nagaoka
921gal
Hypocenter
Seismic station in
kawaguchi
Etigo-yuzawa 943gal
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Basic Policy and Whole Image of
Earthquakes
Measures
z Prevent structure being fatal damage
z Prevent rolling stock deviating extremely in case of der
z Seismic strengthening for the existing structures,
viaduct and tunnel etc.
z Improvement and enhancement of rolling stock and track
for preventing rolling stock deviating extremely
Ｌ-type rolling stock guide
Rail over-turn prevention device
Glued-insulated joint rail for seismic measures etc.
z Reduction of emergency braking distance at an earthquak
z Expansion of early earthquake detection network
High Speed 2008
A Process of Seismic Measures
for
Existing Structures
Viaduct
South Hyogo Earthquake （Max891gal)
Bridge of columns failing in shear
were damaged greatly.
Seismic strengthening were taken
prefer-entially
Steel jacket method, Rib-bar(RB)method
etc.
Tunnel
Niigata Chuetsu Earthquakes（Max1008gal
Seismic strengthening of the viaduct
was completed at the point of
derailment, so the fatal deformation
of
was nothing.
Newitconstruction
Design criterion was strengthened
in response to South Hyogo
Earthquake.
Deformation of tunnel and collapse of
wall surface concrete
Backfill grouting method and rock
bolt method were done for the tunnel
near the active fault.
Rock bolt method
The earthquake didn’t cause
heavy damage to the tunnel,
because the section of tunnel
was short.
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Measures for Deviating of Rolling
Stock
Hold the rail between wheel and
washer fixing guard iron, and
lead derailed rolling stock to
go straight ahead.
Measure for on-board
Develop of “Ｌ-type rolling stock guide”
Ｌ-type rolling stock guide
Replicate the situation
artificially
Rail over-turn prevention
device
Washer
Washer fixing
fixing guard
guard
iron
iron
Measure for ground facilities
z Prevent rail over-turning
z Prevent rolling stock dropping
off
from slab
Develop
Rail over
-turn prevention
device
Develop of
of ““Rail
over-turn
prevention device”
device”
High Speed 2008
Measures for Deviating of Rolling Stock
Defect in rail end at glued-insulated
joint because wheel of derailed rolling
stock impact glued-insulated joint rail.
Develop glued-insulated joint rail (IJ) for
seismic measures which doesn't break
when wheel of derailed rolling stock impact it.
Slope
Slope the
the
fishplate
fishplate
Improve
Improve the
the structure
structure
which
which the
the bolt
bolt is
is not
not
broken
broken due
due to
to thickening
thickening
the
the fishplate
fishplate
High Speed 2008
Conclusion
I. High-speed train was derailed by an earthquake, the first such
accident in the world.
II. The viaducts didn’t result in fatal damage by seismic
strengthening, so the shinkansen was not deviated and made a soft
landing. And then there were no casualties.
III.We are promoting the measures, seismic strengthening of structure,
improvement and enhancement of rolling stock and track for
preventing rolling stock deviating etc..
IV. We are taking measures for preventing rolling stock deviating
that the situation of Niigata chuetsu earthquakes is replicated
artificially.
And we are developing measures for turnout etc..
V. The measures for preventing rolling stock deviating we
are taking have possibilities of applying for general
high-speed train’s derailment.
High Speed 2008