[1]郭文成,黄功俊,闵鹤群.简易布窗帘及课桌对教室空场混响时间的影响[J].东南大学学报(自然科学版),2016,46(4):727-732.[doi:10.3969/j.issn.1001-0505.2016.04.009]
 Guo Wencheng,Huang Gongjun,Min Hequn.Influences of simple fabric curtains and desks on reverberation time in an unoccupied classroom[J].Journal of Southeast University (Natural Science Edition),2016,46(4):727-732.[doi:10.3969/j.issn.1001-0505.2016.04.009]
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简易布窗帘及课桌对教室空场混响时间的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第4期
页码:
727-732
栏目:
建筑学
出版日期:
2016-07-20

文章信息/Info

Title:
Influences of simple fabric curtains and desks on reverberation time in an unoccupied classroom
作者:
郭文成12黄功俊3闵鹤群12
1东南大学建筑学院, 南京 210096; 2东南大学城市与建筑遗产保护教育部重点实验室, 南京 210096; 3东南大学土木工程学院, 南京 210096
Author(s):
Guo Wencheng12 Huang Gongjun3 Min Hequn12
1School of Architecture, Southeast University, Nanjing 210096, China
2Key Laboratory of Urban and Architectural Heritage Conservation of Ministry of Education, Southeast University, Nanjing 210096, China
3School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
教室 吸声 混响时间 噪声控制 声舒适
Keywords:
classroom sound absorption reverberation time noise control acoustical comfort
分类号:
TU112
DOI:
10.3969/j.issn.1001-0505.2016.04.009
摘要:
采用实验测量和数值仿真研究了常用简易布窗帘及课桌对国内大学典型教室空场混响时间的影响规律和机理.首先,选取了尺寸为16.8 m×10.2 m×3.78 m的新建教室,分别在未安装窗帘和课桌、仅安装窗帘、已安装窗帘和课桌等多种状态下,使用中断声源法对其空场混响时间进行了实验测量.然后,基于Raynoise建立了该教室上述多种状态下的声场仿真模型.将仿真结果与实验测量结果进行对比,推算出了该教室各内表面、窗帘和课桌的吸声系数.结果表明,窗帘主要通过吸声而课桌则通过吸声以及几何结构来改变教室混响,并且窗帘和课桌可分别使该教室空场混响时间至少降低54%和27%.
Abstract:
Influences of simple fabric curtains and desks on the reverberation time(RT)in an unoccupied university classroom were investigated experimentally and numerically. First, in-situ RT measurements were carried out by the interrupted noise method in a newly-built unoccupied classroom with a size of 16.8 m×10.2 m×3.78 m. Several conditions were considered: without curtains and desks, with curtains only, or with curtains and desks both. Secondly, acoustical simulation models of the classroom under the above conditions were built by Raynoise. Extensive comparisons were carried out between the simulated and measured results to obtain the absorption coefficients of the interior surface of the classroom, curtains and desks. The results show that, simple fabric curtain mainly depends on its high absorption, while the desk depends on its absorption and geometry structures to change the reverberation of the classroom, and the curtains and desks can reduce the reverberation time of the unoccupied classroom at least 54% and 27%, respectively.

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备注/Memo

备注/Memo:
收稿日期: 2016-01-24.
作者简介: 郭文成(1990—),男,硕士生;闵鹤群(联系人),男,博士,副教授,hqmin@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51408113)、江苏省科技计划青年基金资助项目(BK20140623).
引用本文: 郭文成,黄功俊,闵鹤群.简易布窗帘及课桌对教室空场混响时间的影响[J].东南大学学报(自然科学版),2016,46(4):727-732. DOI:10.3969/j.issn.1001-0505.2016.04.009.
更新日期/Last Update: 2016-07-20