Soil liquefaction in Tokyo Bay area due to the 2011 Tohoku (Japan) earthquake
DOI:
https://doi.org/10.5459/bnzsee.45.1.15-22Abstract
A devastating earthquake hit the Tohoku and Kanto regions of Japan on 11 March 2011, causing extensive damage to life and property as a result of a large-scale tsunami and damage to nuclear power plants. Although located about 400 km away from the epicentre, many residential and commercial buildings and lifeline facilities in Tokyo Bay area suffered extensive damage due to soil liquefaction and associated ground deformation. This paper discusses the results of the damage investigation conducted in the area after the earthquake, with emphasis on liquefaction-induced damage to buildings, roads, lifelines and other infrastructure. In addition, the performance of ground improved by various remediation techniques is discussed. Finally, lessons learned from the event are summarised.
References
Japan Meteorological Agency (2011). The 2011 off the Pacific coast of Tohoku Earthquake Portal, http://www.jma.go.jp/jma/en/2011_Earthquake.html, Retrieved 27 July 2011.
National Police Agency (2011). Damage situation and police measures regarding the 2011 Off the Pacific Coast of Tohoku Earthquake (in Japanese), http://www.npa.go.jp/archive/keibi/biki/index.htm, Retrieved 28 July 2011.
Cabinet Secretariat, Cabinet Public Relations Office (2011). Report of Japanese Government to the IAEA Ministerial Conference on Nuclear Safety - The Accident at TEPCO's Fukushima Nuclear Power Stations – (http://www.kantei.go.jp/foreign/kan/topics/201106/iaea_houkokusho_e.html), Retrieved 28 July 2011.
Morita, Y. (2005) “Waste management and land reclamation in Tokyo Bay,” Sustainable Urban Regeneration Magazine, Vol. 2: Understanding Tokyo, 21p. Figure 19: An undamaged building resting on improved foundation ground. Adjacent to it, sand boils were visible everywhere. Figure 20: Portions of Haneda International Airport where compaction grouting and chemical grouting methods were implemented (figure courtesy of Sanshin Corporation).
Endoh, T. (2004). “Historical review of the reclamation works in the Tokyo Bay area,” Journal of Geography, Vol, 113, No.6, pp. 75-81 (in Japanese).
Shimizu Corporation (2011). Report on the Tohoku Area Pacific Offshore Earthquake, http://www.shimz.co.jp/english/theme/earthquake/outline.html, Retrieved 28 July 2011.
Port and Harbour Research Institute (1997). Handbook of Liquefaction Remediation in Reclaimed Lands, Balkema.
Harada, K., Nozu, M. and Orense, R.P. (2011). “Liquefaction-proofing through Sand Compaction Pile method: Case studies from recent gigantic earthquakes in Japan,” Proc., 7th APU Research Symposium on Multi-hazards around the Pacific Rim, Auckland, pp. 62-63.
Orense, R.P. (2008). “Liquefaction remediation by compaction grouting,” Proceedings, New Zealand Society for Earthquake Engineering Annual Technical Conference, Wairakei, Paper No. 50, 8p. (in CD-ROM).