Pressure distributions on prism-shaped buildings in experimentally simulated downburst

作     者：LI HongHai OU JinPing 

作者机构：School of Civil EngineeringHarbin Institute of Technology 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51161120359) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2014年第57卷第10期

页      码：2070-2081页

摘      要：Wind loading is one of the most significant factors in civil engineering that influences the structural design *** this paper,a group of manufacturing equipments for downburst simulation based on impinging jet model was developed for investigating the wind loads on structures:including the centrifugal air bellows to generate airflow,a movable platform to realize multiple locations of the building and a freely rotatable turntable to implement alterable building *** of transducers were used to measure the wind action on all surfaces of the *** pressure coefficients calculated from the observed data were utilized to evaluate the downburst wind *** distributions on three prism-shaped building models with different placements and angles were investigated to obtain the maximum wind action and mean pressure *** results showed that the maximum pressure coefficient would reach 1.0 on the top surface if the downburst just broke out over the *** that the building was in the developing field of the downburst,the top and the front surfaces would be under high wind pressure and only the back surface would endure wind *** the downdraft happens away from the prismatic building,all surfaces,except the front surface,would subject to suction with different *** was also found that the pressure coefficient on the right surface would get its negative peak at first and then go straight up to 0.6 as the angle changed from 0°to 45°and the wind pressure on the front surface would decrease slightly through the whole *** assertive results provide elemental data for structural wind-resistant design in civil engineering for the downburst-prone areas.

主 题 词：wind loading downburst pressure coefficient building structure impinging jet model 

学科分类：081405[081405] 08[工学] 0814[工学-地质类] 

核心收录：

D　O　I：10.1007/s11431-014-5648-4

馆 藏 号：203258616...