Collapse of Showa Bridge revisited
Bhattacharya, S (2013) Collapse of Showa Bridge revisited http://casehistories.geoengineer.org/volume/volume3/issue1/IJGCH_3_1_3.html, 3 (1). pp. 24-35.
Available under License : See the attached licence file.
The collapse of the Showa Bridge during the 1964 Niigata earthquake features in many publications as an iconic example of the detrimental effects of liquefaction. It was generally believed that lateral spreading was the cause of failure of the bridge. This hypothesis is based on the reliable eye witness that the bridge failed 1 to 2 minutes after the earthquake started which clearly ruled out the possibility that inertia (during the initial strong shaking) was the contributor to the collapse. Bhattacharya (2003), Bhattacharya and Bolton (2004), Bhattacharya et al (2005) reanalyzed the bridge and showed that the lateral spreading hypothesis cannot explain the failure of the bridge. The aim of this short paper is to collate the research carried out on this subject and reach conclusions based on analytical studies and quantitative analysis. It is being recognised that precise quantitative analysis can be difficult due to lack of instrumented data. However, as engineers, we need to carry out order-of-magnitude calculations to discard various failure hypotheses.
|Divisions :||Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering|
|Date :||28 August 2013|
|Identification Number :||https://doi.org/10.4417/IJGCH-03-01-03|
|Related URLs :|
|Additional Information :||Copyright 2013 International Journal of Geoengineering Case Histories. This paper appears here by kind permission of the publisher.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||25 Sep 2013 17:05|
|Last Modified :||09 Jun 2014 13:12|
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