System identification of super high‐rise buildings using limited vibration data during the 2011 Tohoku (Japan) earthquake. Issue 11 (11th December 2012)

• Record Type: Journal Article
• Authors: Minami, Y.; Yoshitomi, S.; Takewaki, I.
• Is Part Of: Structural control and health monitoring. Volume 20:Issue 11(2013)
• Page Start: 1317
• Page End: 1338
• Publication Date: 2012-12-11
• Subjects: Structural engineering -- Periodicals; Structural control (Engineering) -- Periodicals; Automatic data collection systems -- Periodicals; Detectors -- Periodicals; 624.17
• DOI: 10.1002/stc.1537
• Languages: English
• ISSNs: 1545-2255

Abstract

<abstract abstract-type="main"> <title>SUMMARY</title> <p>A new method of system identification of high‐rise buildings is proposed in which high‐rise buildings are represented by a shear‐bending model. The method is devised to find the story shear and bending stiffnesses of a specific story from the horizontal floor accelerations. The special characteristic of the proposed method is to use a previously derived set of closed‐form expressions for the story shear and bending stiffnesses in terms of the limited floor accelerations and to utilize a reduced shear‐bending model with the same number of elements as the vibration recording points. In the proposed method, a difficulty of prediction of an unstable specific function in a low‐frequency range can be overcome by introducing an ARX model. It is demonstrated that the shear‐bending model can simulate the vibration records with a reasonable accuracy. It is shown further that the vibration records at two super high‐rise buildings during the 2011 Tohoku (Japan) earthquake can be simulated with the proposed method including a technique of adding degrees of freedom between the vibration recording points. Copyright © 2012 John Wiley &amp; Sons, Ltd.</p> </abstract>