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http://www.habitables.co.uk/feature-2/japans-earthquake-buildings-a-history Sendai Earthquake, March 11, 2011
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Japan: Population: 127,350,000 Area: 145,925 sq mi Population density: 873.1/sq mi
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The 1891 Nobi Earthquake
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The 1923 Kanto Earthquake
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Post WW2 Japan, and building regulations Development of seismic design codes Vulnerability assessment of existing construction Retrofit technology of vulnerable construction Evaluation of damage to affected construction, Repair and strengthening of damaged construction
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Isolation units are the basic elements of base isolation system which are intended to provide the mentioned decoupling effect to a building or non-building structure. Isolation components are the connections between isolation units and their parts having no decoupling effect of their own. upload.wikimedia.org/wikipedia/commons/0/07/Tuned_mass_damper.gif Taipei 101 Tuned Mass Damper
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“... move with the earth, rather than trying to resist it” Mass dampers – Vibration Control
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Base Isolation
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Lateral Forces
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World's Largest Earthquake Shake Test in Japan http://www.youtube.com/watch?v=W4nLwwXhEag
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http://www.nytimes.com/interactive/2011/03/13/world/asia/satellite-photos-japan-before-and-after-tsunami.html?src=tptw Fukushima Daiichi Nuclear Plant
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North of Sendai
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Sendai
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