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I n t e r n a t i o n a l C o n f e r e n c e o n
Structural and Civil Engineering
Research
JET 2018
ISSN: 2319-9873
O c t o b e r 0 1 - 0 2 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Civil Engineering 2018
Page 16
Ductile cast iron is applied to a bridge deck. Since the fabrication of a cast iron
product is based on casting, no welding is needed. The possibility of fatigue
crack occurrence is therefore very little while fatigue crack is a serious problem
in the orthotropic bridge deck made of steel. The cast iron deck would be light,
about a half of the reinforced concrete (RC) deck slab, so that it could enhance the
seismic resistanceof abridgeaswell.This isan important feature for abridge in the
seismic zone such as Japan. In the present study, the design analysis was done by
FEM to take stress concentration into account and themaximum stress was made
smaller than the allowable value. The deck has longitudinal and lateral stiffeners.
All the connections such as those between the stiffeners and those between the
deck plate and the stiffeners were rounded to reduce the stress concentration.
That is an easy task for cast iron products. On the other hand, it was not so easy
to produce a ductile cast iron deck with uniformmaterial property, since the bridge
deck is large and the width-to-thickness ratio of the deck is much larger than that
of an existing cast iron product. Various computational simulations and casting
processes were tried out before the deck panel with uniformmaterial property was
produced successfully. Then static test and fatigue test were conducted, which
concluded that the ductile cast iron deck satisfies the requirements imposed by
the Japanese design specifications for highway bridges.
Ductile cast iron deck for bridge
Eiki Yamaguchi 1, H Tobinaga1,2 and Minoru
Murayama1,2
1Kyushu Institute of Technology, Japan
2HinodeCo Ltd, Japan
Eiki Yamaguchi et al, JET 2018 Volume: 7
Biography
Eiki Yamaguchi has received his PhD from Purdue University,
USA. Currently, he is serving as a Professor at Department of
Civil Engineering, Kyushu Institute of Technology, Japan. He
has published more than 100 papers and serves as an Editorial
Board Member of Journal of Constructional Steel Research
and International Journal of Advanced Steel Constructionas
well as International Advisory Committee Members of several
international conferences. His expertise includes Applied/
Structural Mechanics, Steel Structures and Bridges.