The Buildings’ Reliability Calculating Method Using a Simple Seismic Impact Model
Publish place: Civil Engineering Journal، Vol: 10، Issue: 8
Publish Year: 1403
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_CEJ-10-8_019
تاریخ نمایه سازی: 8 مهر 1403
Abstract:
Non-canonical spectral representation of seismic activity is employed to assess the reliability of nonlinearly modeled buildings. Seismic impact is modeled using a random process, represented by simple functions with random parameters. We consider random processes with correlation functions expressed as a sum of cosine-exponential terms. Reliability, defined as the probability of failure-free operation, is determined using statistical testing methods. The reliability calculation algorithm is implemented in MATLAB. As an illustrative example, we calculate the reliability of a section of a one-story industrial building frame modeled by a nonlinear system. Failure is defined as exceeding experimentally determined permissible displacement limits. Our calculations involve up to ۲۰۰۰ realizations of the random process. We analyze histograms, empirical distribution functions, and reliability values of maximum fragment movements. We find that using ۱۰۰ realizations of the random process yields satisfactory accuracy in determining reliability. This reliability calculation method is recommended for rapid reliability estimates across various structure types, including those employing seismic isolation systems. We also observe a correlation between displacement magnitudes calculated under accelerograms and a random process represented in a non-canonical form. Thus, we recommend this method for reliability assessments in multi-story buildings. Doi: ۱۰.۲۸۹۹۱/CEJ-۲۰۲۴-۰۱۰-۰۸-۰۱۹ Full Text: PDF
Keywords:
Artificial Accelerograms , Earthquake-Resistant Construction , Seismic Impact , Reliability , Probability of Failure-Free Operation.
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