Response Analysis and Auto-Regressive Exogenous Modeling of a Steel-Reinforced Concrete High-Rise Building during the 2011 Off the Pacific Coast of Tohoku Earthquake

Many seismic records were obtained during the 2011 off the Pacific coast of Tohoku earthquake. These records can be used to improve the seismic design and disaster prevention capabilities of buildings. In this paper, seismic simulation analyses of a steel-reinforced concrete high-rise building located in the Tokyo Bay area is conducted based on the seismic record of the Tohoku earthquake. A nonlinear sway-rocking model is used in the analysis, and comparisons are drawn between the observed records and analytical results of the pre-shock, main shock and earthquake after 1 month. The analytical results correspond well with the seismic records, and the effect of the nonlinear nature of the main shock is retained in the building. This is an important consideration when conducting response evaluation. An ARX (auto-regressive exogenous) model is used to identify the first and second natural periods, and the damping ratios, of both the records and the analytical results. Although the first and second damping ratios are similar in value to the observed results, the second damping ratio is overestimated in the analytical results because of the stiffness damping model.

[1]  Tomoo Saito,et al.  SYSTEM IDENTIFICATION OF A HIGH-RISE BUILDING APPLYING MULTI-INPUT-MULTI-OUTPUT ARX MODEL OF MODAL ANALYSIS , 1998 .

[2]  Hiroshi Fukuyama,et al.  Response analysis of SRC high-rise building during the 2011 off the pacific coast of Tohoku earthquake , 2013 .

[3]  Masanori Iiba,et al.  Recorded Responses of Building Structures during the 2011 Tohoku-Oki Earthquake with Some Implications for Design Practice , 2013 .

[4]  Kohei Fujita,et al.  Story-wise system identification of actual shear building using ambient vibration data and ARX model , 2014 .

[5]  Masayuki Nagano,et al.  Evaluation of the structural damage of high‐rise reinforced concrete buildings using ambient vibrations recorded before and after damage , 2016 .

[6]  Yoshiki Ikeda,et al.  An active mass damper designed using ARX models of a building structure , 2016 .

[7]  S. Farid Ghahari,et al.  Responses of a Tall Building with U.S. Code-Type Instrumentation in Tokyo, Japan, to Events before, during, and after the Tohoku Earthquake of 11 March 2011 , 2016 .

[8]  Chin-Hsiung Loh,et al.  Application of off-line and on-line identification techniques to building seismic response data , 1996 .

[9]  P. B. Schnabel SHAKE-A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites , 1970 .

[10]  H. Kawase Studies on the 2011 Off the Pacific Coast of Tohoku Earthquake , 2014 .

[11]  V. Drnevich,et al.  SHEAR MODULUS AND DAMPING IN SOILS: DESIGN EQUATIONS AND CURVES , 1972 .

[12]  Erdal Şafak Identification of Linear Structures Using Discrete‐Time Filters , 1991 .