轻型木结构楼盖系统的空气声隔声测试理论计算与研究  

Theoretical calculation and test research on airborne sound insulation of wooden structure floor system

作　　者：王正 陈偲 李敏敏 张一凡 WANG Zheng;CHEN Si;LI Minmin;ZHANG Yifan(College of Materials Science and Technology,Nanjing Forestry University,Nanjing 210037,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]南京林业大学材料科学与工程学院,南京210037 [2]同济大学土木工程学院,上海200092

出　　处：《建筑结构》2024年第2期129-135,共7页Building Structure

基　　金：江苏省高等学校自然科学研究面上项目(19KJD220001)。

摘　　要：针对轻型木结构建筑楼盖中存在的隔声问题开展相关楼盖声学研究,探索一种有效解决建筑楼盖隔声问题的方法。以一幢二层轻型木结构建筑同一间卧房中的一种普通楼盖和3种浮筑楼盖为研究对象,采用空气声隔声条件下的标准白噪声与音乐噪声激励测试法,对其开展结构设计、理论验算和现场隔声测试,并开展其隔声量、声压分布特性频谱、噪声源频率特性、隔声声压级倍数关系及其隔声机理等分析。结果表明:3种浮筑楼盖的空气声隔声量整体比普通楼盖提高1~2dB(A);音乐噪声激励条件下,普通楼盖隔声测试值比白噪声激励条件下低2~3dB、3种浮筑楼盖隔声测试值低3~4dB;软木板浮筑楼盖在中高频段隔声效果较好,BGL浮筑楼盖和EPP浮筑楼盖在中低频段的隔声效果较好。研究提出的木结构建筑楼盖系统隔声性能优化设计与检测方法,可以更好地满足住户居住舒适度。In view of sound insulation problems of the light wood structure building floor,relevant floor acoustic research was carried out and a method to solve the problem of sound insulation of the light wood structure building floor was explored.Taking an ordinary floor and three kinds of floating floors in the same bedroom of a two-story light wooden structure building as the research object,by adopting the standard white noise and music noise excitation test method under the condition of air sound insulation,structural design,theoretical calculation and on-site sound insulation test were carried out,and their sound insulation capacity,sound pressure distribution characteristic spectrum,noise source frequency characteristic,insulation analysis of sound pressure level multiple relationship and sound insulation mechanism were analyzed.The results show that the airborne sound insulation volume of the three types of floating floors is 1~2dB(A)higher than that of ordinary floors.Under the music noise excitation conditions,the sound insulation test value of ordinary floor is 2~3dB lower than that under the condition of white noise excitation conditions,and the sound insulation test value of three kinds of floating floors is 3~4dB lower than that under white noise excitation conditions.The sound insulation effect of cork board floating floor in the middle and high frequency band is better,and the BGL floating floor and EPP floating floor in the middle and low frequency have better sound insulation effect.The optimal design and detection method for sound insulation performance of wooden building floor system proposed can better meet the living comfort of residents.

关 键 词：轻型木结构建筑楼盖 空气声隔声 理论验算 标准白噪声激励 音乐噪声激励 现场测试 

分 类 号：TU366.2[建筑科学—结构工程]