کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6756885 | 1431089 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Field study on high-speed train induced fluctuating pressure on a bridge noise barrier
ترجمه فارسی عنوان
مطالعات میدانی در قطار سرعت بالا موجب نوسان فشار روی یک مانع سر و صدا می شود
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کلمات کلیدی
فشار متغیر، اندازه گیری میدان، مانع سر و صدا، قطار سریع السیر، آیرودینامیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The pressure variations induced by a CRH380A EMU on a 2.15â¯m high bridge noise barrier are investigated in a field measurement. The familiar fluctuating pressure time history curves and the peak-to-peak pressure (ÎP) distributions attributing to the train head on the barrier surfaces are presented. A comparison of the positive head pulse pressure is made between the measurement results and the data calculated by empirical equations in EN 14067-4. Furthermore, the influences of train speed, train running lines, locations of measurement points, train marshalling length and environmental wind speed on ÎP are analysed. The results indicate as the train speed increases, the corresponding time intervals of ÎP decrease gradually, whereas their slopes become increasingly steep. For a CRH380A EMU, the aerodynamic length of the train head is between 7.63 and 7.64â¯m, which differs from the physical length of a realistic train with 12.00â¯m. Along the noise barrier from bottom to top, the ÎP values on the inner surface decrease with the increase of height, while these values on the outer surface increase. Taking the wind direction into account, the ÎP values are a little higher when the high-speed trains run against the wind direction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 177, June 2018, Pages 157-166
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 177, June 2018, Pages 157-166
نویسندگان
Xiao-hui Xiong, Ai-hua Li, Xi-feng Liang, Jie Zhang,