دانلود Evaluating the Proper Damage Indexes of LSF Systems Using NonLinear Time History Analysis and

چهارشنبه 27 بهمن 1395

12:04

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نام کنفرانس یا همایش : دومین کنگره بین المللی سازه ، معماری و توسعه شهری

تعداد صفحات : 17

چکیده مقاله:

The Lightweight Steel Framing (LSF) system has been proposed as an economical system and earthquake resistant. Due to the lightness of LSF structures, the seismic performance of middle-rise buildings has been improved. Nowadays, various numerical-analytical methods have been proposed for seismic assessment of conventional structures. Providing a perfect seismic damage index is always regarded as one of the analytical passive points. In this research, a LSF building was selected as a case study for Finite Element (FE) modelling in which non-linear time-history analyses have been undertaken. Material properties were defined according to the performed experimental studies. A novel approach was presented for the seismic damage index of LSF systems using the simultaneous incorporation of the non-linear analysis results and the correction coefficient describing the seismic geotechnical effects. The presented seismic damage index indicates the seismic performance of the LSF structures well. Also, a two-layer perceptron Artificial Neural Network (ANN) was trained using the results of the FE model and a non-linear relationship was obtained to predict the seismic damage index. The proposed seismic damage index was finally validated using statistical analyses indicating that the proposed method does not show a significant difference as compared to the ANN results.

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