کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6756969 1431091 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wind load fluctuations on roof batten to rafter/truss connections
ترجمه فارسی عنوان
نوسانات باد بار بر روی سقف به اتصالات رفتر / تراس
کلمات کلیدی
مطالعه تونل باد، ساختار سبک قاب، ساختمان های کم ارتفاع، همبستگی بارها، شکستهای پیشرونده،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Batten to rafter connections in light framed housing can be vulnerable to progressive or cascading failures where a localised failure can cause the loss of a large section of the roof envelope. The synchrony of loads at neighbouring connections may affect the initiation of such failures. A 1/50 length scale wind tunnel model study was performed on a gable roof house to record spatial and temporal pressure fluctuations on the roof surface and data were studied to determine the flow separation mechanisms causing different loading patterns on batten to rafter connections. The cross correlation between load time histories was used to give a measure of synchrony between loads experienced at neighbouring connections and indicate the direction that fluctuations move across the roof. Orthogonal wind directions result in 2-dimensional flow separation that produce more synchronous loads at batten to rafter connections than cornering wind directions, where conical vortices produce high uplift forces on connections. The patterns of loading and their correlations give a means of identifying which parts of the roof and which approach wind directions may result in the initiation of a progressive failure of batten to rafter connections.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 175, April 2018, Pages 193-201
نویسندگان
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