技术中心

【英文篇名】 Impact of modifying terrain roughness class on theoretic wind pressure of air filtration 【作者中文名】 丁力行; 鲁晓青; 于宏; 【作者英文名】 By Ding Lixing★; Lu Xiaoqing and Yu HongCentral South University; Changsha; China; 【作者单位】 中南大学; 上海一冷开利空调设备有限公司; 【文献出处】 暖通空调, Hv 空气渗透; 理论风压; 修正系数; 【英文关键词】 terrain roughness; air infiltration; theoretic wind pressure; correction coefficient; 【摘要】 新《建筑结构荷载规范》(GB50009—2001)将地面粗糙度等级由原来的三类改为四类,导致了风压高度修正的变化,从而使渗透风量也相应地发生变化。分析比较了风压单独作用下新规范和原规范的风压修正,结果表明地面粗糙度等级的修订对10m以下建筑的空气渗透理论风压的影响较大。 【英文摘要】 Changing the terrain roughness class from three classes into four classes in new Load code for the design of building structures causes the change of height modify of wind pressure, which makes the change of air infiltration rate correspondingly. Analyses and compares the wind pressure correction of buildings with wind working alone in the new code and former code. The result indicates that the modification of terrain roughness class has an obvious impact on theoretic wind pressure below 10 m.