Many tall buildings in Tokyo metropolitan area were strongly shaken during the East Japan Earthquake, March 11, 2011. Most of them are less than 40 years old, and have not experienced the shaking of such a strong level. The base peak horizontal accelerations were up to 150 cm/s2, more than one-third of the one representing the major earthquake stipulated by the Japanese seismic design code. The tall buildings are of steel construction typically, concrete construction, or hybrid construction. Som
Many tall buildings in Tokyo metropolitan area were strongly shaken during the East Japan Earthquake, March 11, 2011. Most of them are less than 40 years old, and have not experienced the shaking of such a strong level. The base peak horizontal accelerations were up to 150 cm/s2, more than one-third of the one representing the major earthquake stipulated by the Japanese seismic design code. The tall buildings are of steel construction typically, concrete construction, or hybrid construction. Som