کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4920647 1429100 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development and experimental verification of a pre-pressed spring self-centering energy dissipation brace
ترجمه فارسی عنوان
توسعه و تجربیات آزمایشی برش زاویه انرژی خود به خودی بهار از قبل فشار داده شده است
کلمات کلیدی
خودکارش بندی، از بین بردن انرژی، ترکیب دیسک بهار، رفتار هیسترتیک، آزمایشی در مقیاس بزرگ،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The present study develops and experimentally verifies a new type of earthquake-resilient bracing system. The proposed pre-pressed spring self-centering energy dissipation (PS-SCED) bracing system combines friction energy dissipation devices between inner and outer tube members with a mechanism of pre-pressed disc springs that provides a self-centering capability and additional energy dissipation. Two large-scale PS-SCED braces with different types of inner tube members are designed, fabricated, and tested under low cyclic reversed loadings, and the results demonstrate that the PS-SCED braces exhibit stable and repeatable flag-shaped hysteretic responses with excellent self-centering capabilities, effective energy dissipation, large ultimate bearing capacity, and appreciable ductility. The residual deformation of the brace is controlled by adjusting the ratio of the initial pre-pressed force of the disc springs to the friction force provided by the energy dissipation devices. The energy dissipation and ductility of the PS-SCED brace constructed with a circular inner tube are better than those of the brace constructed with an X-shaped inner tube. A restoring force model for the PS-SCED brace is proposed, and the predicted hysteretic responses agree well with the experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 127, 15 November 2016, Pages 49-61
نویسندگان
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