کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6740648 | 504363 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the effects of the gap on the unsteady pressure characteristics of two-box bridge girders
ترجمه فارسی عنوان
در اثر شکاف بر روی ویژگی های نامطلوب فشار دو جداره پل جعبه
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کلمات کلیدی
پایداری لرزش، ویژگی های فشار نامنظم، تیر دو جعبه،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
This experimental study focuses on the unsteady pressure characteristics of two-box bridge decks. Models with vertical plates and gratings in several gap length configurations are investigated and compared with single-box cross sections. The results demonstrate that, with respect to unsteady pressure characteristics, the upstream box is barely affected by the slot and behaves similarly to the single-box model. In contrast, the unsteady pressure characteristics of the dowstream box are defined mainly by the characteristics of the slot and the geometry of its cross section. The upstream box geometric configuration plays only a minor role in the definition of the unsteady pressure characteristics of the dowstream box. An equivalent Theodorsen function to be used in the calculation of aerodynamic derivatives of two-box girders is proposed. Using this function, it is demonstrated that the only aerodynamic derivative that is aerodynamically dependent on the gap length is A2â. These findings suggest that the results of single-box investigations can be extended to two-box cross sections.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 82, 1 January 2015, Pages 121-133
Journal: Engineering Structures - Volume 82, 1 January 2015, Pages 121-133
نویسندگان
Cristiano Augusto Trein, Hiromichi Shirato, Masaru Matsumoto,