Nonlinear equivalent SDOF analysis of steel frame structures using parameters estimated from recorded floor acceleration response: an experimental case study
英文:
Nonlinear equivalent SDOF analysis of steel frame structures using parameters estimated from recorded floor acceleration response: an experimental case study
International Conference Construction Science and Technology Toward Sustainable Development
英文:
International Conference Construction Science and Technology Toward Sustainable Development
開催地
和文:
ハノイ
英文:
Hanoi
アブストラクト
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.
各種検索
サポート
ヘルプ