【作者】 李睿杰； 严佳川； 支旭东；

【Author】 LI Ruijie;YAN Jiachuan;ZHI Xudong;East China Architectural Design & Research Institute Co., Ltd.;Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology;Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology;

【机构】 华东建筑设计研究总院； 哈尔滨工业大学结构工程灾变与控制教育部重点实验室； 哈尔滨工业大学土木工程智能防灾减灾工业和信息化部重点实验室；

【摘要】 为考察一种新型三明治复合外围护墙板的隔声性能,进行了2个足尺试件的混响室试验,考察了不同保温层厚度对墙板隔声性能的影响,得到了墙板的计权隔声量,在此基础上,结合声学的理论知识对试验结果进行了分析。试验结果表明,新型复合外围护墙板的保温层厚度分别为75,150mm时,其计权隔声量分别为49,45dB,满足相关规范对外围护墙板隔声性能的要求。通过试验结果分析得到了复合墙板试件不同中心频率的隔声量。提出了为增大计权隔声量,应尽量增大墙板内叶、外叶的厚度差及刚度差,可为该类墙板工程应用提供设计建议。更多还原

【Abstract】 The paper investigated the sound insulation performance of a new type of sandwich composite enclosure wallboard. A total of two full-scale specimens were tested via reverberation room method to study the effect of thermal insulation layer thickness on sound insulation performance of the sandwich composite enclosure wallboards. The weighted sound insulation of the specimens was obtained and the results were analyzed in terms of acoustics. The results showed that the weighted sound insulation of the wallboard with thermal insulation layer thickness of 75 mm and 150 mm was 49 dB, 45 dB respectively. The sound insulation performance of the new type of sandwich composite enclosure wallboard met the requirements of relevant design code. The sound insulation of the specimens at varying central frequency was also obtained. In order to increase the weighted sound insulation of this kind of sandwich composite enclosure wallboard, the paper recommend to enlarge the disparity of thickness and stiffness between the inner and outer layers of the wallboards.更多还原