Study on Damage Occurrence Mechanism of Plane Concrete Piers for Railroad Bridges During Earthquakes and Seismic Measures


Abstract eng:
In the past earthquakes such as the 2004 Niigata-ken Chuetsu Earthquake and the 2011 off the Pacific coast of Tohoku Earthquake in Japan, serious damage to plain concrete piers of railroad bridges has been caused. The typical damage is horizontal gap at the cold joint of the pier and falling down of concrete pieces from the pier under the cold joint. It is necessary to understand the damage occurrence mechanism and to develop effective seismic measures to prevent serious damage in the future earthquakes. With this background, this study analyzed the seismic behavior of a plain concrete pier using the refined distinct element method (Refined DEM). The analyzed model is a plain concrete pier of Uonogawa bridge which is located in Niigata Prefecture and damaged during the 2004 Niigata-ken Chuetsu Earthquake. The damage occurrence mechanism was investigated through the analysis. As for the seismic measures, the RC jacketing method is generally used, but this method cannot be used for piers in the river since the cross-sectional area of the river is reduced. For this purpose, the seismic measures which does not reduce the cross-sectional area of the river is required. Therefore, this study considers the seismic measures which does not affect the cross-sectional area of the river, and verify the validity of the measures through the analysis.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 121.:
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