Nonlinear equivalent sdof analysis of steel frame structures using parameters estimated from recorded floor acceleration response: An experimental case study-Reference-Cited by-同舟云学术

Nonlinear equivalent sdof analysis of steel frame structures using parameters estimated from recorded floor acceleration response: An experimental case study

Published:2023-11 Issue: Volume: Page:174-180
ISSN:
Container-title:Proceedings of the International Conference - Celebrating 60 Years of IBST
language:
Short-container-title:Proceedings of the International Conference - 60 Years of IBST

Author:

Pham Quang-Vinh¹,Kusunoki Koichi¹,Maida Yusuke¹,Yeow Trevor¹

Affiliation:

1. The University of Tokyo, Tokyo, Japan

Abstract

In practice, the building displacement response is often estimated from acceleration using double integration due to the expensiveness and difficulty of measuring displacement. However, a high-pass filter is needed to eliminate the low-frequency component due to the existence of indistinguishable lowfrequency noise that incurred during the double integrating process. As a result, the displacements obtained from accelerations may have large errors, especially when the structure has significant nonlinear deformation. This study aims to estimate the displacement response of steel frame structures by firstly estimating SDOF hysteretic parameters from the acceleration response data, and then by performing numerical analysis using the extracted hysteresis model. The proposed approach was verified using experimental data from shaking table test of three identical 5-story steel frame structures subjected to different seismic records. The results show that the SDOF analysis maximum displacement has higher accuracy than the equivalent SDOF maximum displacement estimated from recorded floor acceleration response data that is recently used for post-earthquake building assessment.

Publisher

Vietnam Institute for Building Science and Technology

Subject

Ocean Engineering,General Earth and Planetary Sciences,General Engineering,General Environmental Science,General Medicine,Development,Geography, Planning and Development,General Earth and Planetary Sciences,General Environmental Science,Materials Chemistry

Reference8 articles.

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