Reducing the acoustical facade load from road traffic with green roofs

被引：144

作者：

Van Renterghem, Timothy ^{[1
]}

Botteldooren, Dick ^{[1
]}

机构：

[1] Univ Ghent, Dept Informat Technol, B-9000 Ghent, Belgium

来源：

BUILDING AND ENVIRONMENT | 2009年 / 44卷 / 05期

关键词：

Green roofs; Sound propagation; Road traffic noise; Building geometry; OUTDOOR SOUND-PROPAGATION; PERFORMANCE; SIMULATION; CANYON; MODEL; FDTD;

D O I：

10.1016/j.buildenv.2008.07.013

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Noise annoyance by road traffic is a major issue in urbanized regions. In this Study, the influence of a green roof on the facade noise load was investigated numerically for road traffic at close distance. Consistent positive effects of the presence of a green roof are observed at non-directly exposed (parts of) facades. A sufficient green roof area is needed to obtain significant reductions in total A-weighted road traffic noise level. With increasing traffic speed, the green roof effect increases for light vehicles. In case of heavy vehicles, this dependence is less strong. In a street canyon situation, the facade load in the non-exposed canyon is largely influenced by both the roof slope and the presence of a green roof. A flat roof generally results in the best average shielding. A green roof is especially interesting in case of a saddle-backed roof. With a good choice of green roof parameters, the shielding of a flat green roof can be approached. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1081 / 1087

页数：7

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