底层架空式临街住区园林交通噪声改善措施仿真研究——以广州东方新世界小区为例  

Simulation Study on Traffic Noise Reduction in Residential Garden with Open Ground Floor Closing to the Road——A Case Study on Guangzhou New World Oriental Residential Area

作　　者：冼家林[1] 袁晓梅[1] 

机构地区：[1]华南理工大学建筑学院亚热带建筑科学国家重点实验室,广州510640

出　　处：《建筑科学》2012年第6期96-101,共6页Building Science

基　　金：国家自然科学基金项目(51178188);中央高校基本科研业务费重点项目(2011220015)

摘　　要：本研究以广州东方新世界小区为例,就底层架空式临街住区园林交通噪声改善的几种物理降噪措施进行了仿真研究,包括架空层吸声设计、实体围墙的高度选择、消防车道出入口改善设计3个层面。结果表明:1)架空层天花与墙面同时采用吸声设计约降噪2.2 dBA;2)2 m高实体围墙约降噪1.8 dBA,结合架空层天花与墙面同时吸声,整体降噪约4.4 dBA;3)针对住区消防车道出入口的物理降噪措施非常有限,且效果不明显,绝大部分受声点显示降噪效果不超过0.7 dBA。In this paper, a simulation research on traffic noise reduction in Guangzhou New World Oriental residential area was presented,including absorption design on open floor＇s interior-face, optimization on solid enclosure height, and improving design for fire- gateway. The results shown that the absorption design on open floor＇s ceiling and wall could make the noise reduced up to 2.2 dBA. FuIthermore,two-meter-high solid enclosure could make the noise reduced about 1.8 dBA, and could up to 4.4 dBA when combining with the absorption design on the ceiling and wall of open floor. In addition,physical methods for fire-gateway＇s noise reduction were not effective,most of them couldn＇t make the noise reduced over 0.7 dBA.

关 键 词：降噪 住区园林 架空层 计算机仿真 

分 类 号：TB53[理学—物理]