کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4920004 1429079 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation on wind tunnel tests of the Kilometer skyscraper
ترجمه فارسی عنوان
بررسی تونل های باد از آسمان خراش کیلومتر
کلمات کلیدی
آسمان خراش کیلومتر آزمون تونل باد، میدان جریان باد، سیستم لوله تصحیح همگام سازی، فشار باد ناشی از باد،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Wind tunnel tests were carried out to investigate the wind pressure distribution of a super high-rise building with a height of 1040 m in China. The huge model size led to several technical difficulties, including simulation of large scale wind flow fields, correction of distortion effects caused by tubing systems and synchronization correction for data in batches. To simulate the wind field with an elevation of one kilometer above the ground, custom designed grid and roughness elements were adopted as flow-adjustment passive devices. According to the matrix transfer method, a set of transfer functions for tubing systems with different lengths were established to eliminate the effect of distortion on fluctuating pressure measurement. A correction method based on Generalized Regression Neural Network (GRNN) was proposed to get time-synchronized data of the whole building. After solving these problems, the mean and extreme pressure coefficients were studied for the distribution of wind-induced pressure. For this model with triaxial symmetry, the distribution of wind pressure shows good symmetry. With the increase of height, largest peak positive wind pressure coefficients increase, while smallest peak negative wind pressure coefficients decrease. The solutions to technical problems and the outcome of wind pressure distribution are expected to be useful to engineers and researchers involved in this field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 148, 1 October 2017, Pages 340-356
نویسندگان
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