2015 Volume 15 Issue 7 Pages 7_444-7_453
The super high-rise buildings suffered indoor damages during the 2011 off the Pacific Coast of Tohoku Earthquake. This paper presented comparison of floor responses and indoor damage level of 2 super high-rise residential buildings based on questionnaire survey for the residents. Furthermore, we estimated the response of the buildings during the main shock, based on the nonlinear response analyses. System identification method was applied to the floor response data in order to investigate the cause of difference of the damages between two buildings. As a result, the following conclusions were reached: 1) The maximum acceleration of RC super-high rise buildings during the 2011 off the pacific coast of Tohoku Earthquake could be estimated based on the questionnaire survey on the action difficulty and overturning ratio of furniture. 2) The response of SRC building was larger than the RC building during the earthquake. This difference was caused by the following factors; a) The relationship between predominant period of the input motion and natural periods of two buildings. b) The equivalent damping factor of the SRC building was smaller than that of the RC building.