کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
305073 512852 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Inelastic yielding strength demand coefficient spectra
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Inelastic yielding strength demand coefficient spectra
چکیده انگلیسی

Currently, earthquake action is obtained by dividing the elastic acceleration spectra by a seismic modification factor, and the latter is also a spectrum actually. The dynamic inelastic response of single-degree-of-freedom (SDOF) systems for modified-Clough hysteretic model with stiffness degradation when subjected to reverse loading were analyzed. Total 370 earthquake records belonging to four site and soil conditions with each containing 74–106 records were used as excitations. The formulae for elastic strength demand coefficient ηe and the seismic force modification factor Rμ were proposed. It is found that the both types of spectra have different characteristic periods, respectively. Two sets of inelastic yielding strength demand coefficients were calculated and compared. The results show that if the elastic ηe and the Rμ spectra were both normalized by the characteristic period TgR, the inelastic ηyμ spectra are not in good agreement with those derived directly from statistical analysis. Therefore, the inelastic ηyμ spectra normalized by the characteristic period Tga were constructed directly, and the obtained curves were quite similar for the four site types. The inelastic ηyμ spectra increase with the period when T

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 28, Issue 12, December 2008, Pages 1004–1013
نویسندگان
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