改善撞击声隔声性能的住宅楼板构造设计

随着中国城市化进程的加速和生活水平的提高,居民对住宅的声环境质量要求越来越高。混凝土楼板的撞击声较难隔绝,对住宅的声品质造成很大影响。该文采用不同材料设计4种楼板隔声构造,并进行现场撞击声隔声测试。测试结果表明,4种楼板隔声构造的计权标准化撞击声压级均小于65dB,满足高要求分户楼板对撞击声隔声的要求。在建筑方案设计阶段如能重视楼板隔声构造设计,能有效提高楼板的撞击声隔声性能,从而提升住宅建筑的声品质。     

琴房楼板撞击声隔声的工程研究

为了避免相邻琴房之间相互干扰,中国音乐学院琴房的楼板需要采用撞击声隔声构造。本文以刚竣工的中国音乐学院综合教学楼工程为实例,从工程前期的楼板撞击声隔声的设计,到工程的竣工测量,对琴房楼板撞击声隔声进行了工程研究,并给出对今后项目建设具有指导意义的结论。     

木地板改善混凝土楼板撞击声的隔声性能研究

通过对混凝土楼板和各种木地板构造方案的撞击声隔声性能的对比测试,对其隔声机理的定性理论分析,以及对铺装方法、弹性垫层等影响因素的讨论,研究了木地板对混凝土楼板撞击声的隔绝作用。结果表明,木地板可有效降低楼板撞击噪声的透射,其中浮筑木地板构造的隔声效果尤为显著,它可以使楼板对撞击声的隔声性能达到一级标准的要求。     

楼板撞击声隔声措施的调研分析

住宅声环境是一个不容忽视的重要问题,我院对近二十多个项目所采用的楼板撞击声隔声措施进行了调研,介绍了这些项目采用的楼板撞击声隔声措施,并对技术应用存在的问题进行了阐述。     

一种可降低建筑楼板L'nT,w值的超薄型隔声砂浆

计权标准化撞击声压级(L'nT,w)是绿色建筑评价中重点关注的指标,隔声砂浆可有效降低建筑楼板L'nT,w值.提出了一种厚度仅为10 mm的超薄型隔声砂浆解决方案,可降低隔声砂浆的施工难度,提高工程实用性.典型应用案例表明,超薄型隔声砂浆可以有效降低建筑楼板L'nT,w值,且隔声性能可以满足绿色建筑评价标准的要求.     

建筑楼板隔声涂料的探索研究

随着绿色建筑的全面实施,作为绿色建筑评价标准的主控项,楼板撞击声的隔声性能及隔声材料的应用逐渐成为建筑领域的研究重点。通过实验研究,开发了一种隔声涂料,并在某住宅小区房间楼板施工铺设。经检测,楼板撞击声标准化撞击声压级为70 dB,达到绿色建筑要求。总结了隔声涂料施工的技术要领及注意事项,为隔声涂料的科学施工提供参考。     

提高楼板撞击声隔绝的措苑

一、当前楼板撞击隔声性能不良的原因在我国的住宅建筑中,采用的楼板形式很多,但撞击声级却很高。几乎没有一种常用楼板构造能符合住宅隔声标准要求的。图1常用住宅楼板构造的撞击声级的测定值,其撞击隔声指数在77—95分贝范围内。近几年来,在住宅中采用的轻质大板,其为12种撞击声级更高,撞击隔声指数在87—103分贝范围内。图2为7种轻质大楼板的实测值。     

建筑隔声与地面辐射供暖

楼板传声是建筑噪声最主要来源之一,现有普通混凝土楼板的计权标准化声压级大多隔声性能不能满足国家标准,需要通过构造浮筑楼板等方式提高楼板隔绝撞击声性能,使其满足国家现行标准要求。地面辐射供暖系统因其特殊的结构形式,其内在具有提高楼板隔绝撞击声性能的优势。本文对建筑楼板隔声现状、地面辐射供暖对建筑隔声的作用以及地面辐射供暖隔声效应的测试方法进行了阐述。     

绿色保障性住宅楼板撞击声压级控制的测试研究

绿色住宅建筑在室内环境方面要求分户楼板的计权标准化撞击声压级不大于70dB,这一指标高于《住宅设计规划》GB50096-2011中对分户楼板的计权标准化撞击声压级所要求的75dB。本文通过对夏热冬暖地区及寒冷地区共12类分户楼板的计权标准化撞击声压级进行实测分析,从楼板构造设计角度给出绿色住宅建筑尤其是绿色保障性住宅的分户楼板计权标准化撞击声压级控制措施。     

分户楼板隔声保温一体化应用研究

我国的居住建筑分户楼板撞击声隔声差是长期未解决的问题。文章对住宅浮筑楼板的隔声保温垫层、保护整浇层、面层等构造的性能特点和施工注意事项进行了分析,探讨了两种应用于试点工程的隔声保温一体化楼板的构造设计。试点楼板的传热系数理论计算值和撞击声隔声实测结果可满足楼板隔声和保温的双重需求,可供推广应用。     

楼板隔声材料的撞击声隔声实验室测量结果研究

隔声降噪问题越来越成为住宅品质的关注方向,尤其是上下楼层之间的撞击声隔声,隔声地板、隔声砂浆、隔声涂料及隔声垫等隔音材料应运而生。本文对比了这4种产品的计权撞击声压级和计权撞击声压级改善量的实验室测试结果。结果表明,这4种隔音材料的隔声效果、隔声原理和施工要求各有特点,在一定厚度、一定密度下均能改善基础分户楼板的计权撞击声压级,并达到标准要求。     

绿色建筑评价中楼板撞击声隔声指标探讨

绿色建筑评价中对楼板撞击声隔声的要求引用《民用建筑隔声设计规范》,单值评价量有实验室测量的计权规范化撞击声压级Ln,w和现场测量的计权标准化撞击声压级L'nT,w。对撞击声隔声评价指标Ln,w、L'n,w、L'nT,w进行理论分析,并结合现场测量和实验室测量对分析结果进行验证。结果表明：当建筑楼板的撞击声隔声性能较差时,侧向传声对测量结果影响较小,现场测量指标L'n,w与实验室测量指标Ln,w相差不大;L'nT与L'n在接收室体积V=31m3时相等,当接收室体积V＞31m3时,L'nT会小于L'n,因此L'nT,w会低于L'n,w和实验室测量值Ln,w,接收室体积越大偏差越大,按照当前住宅户型的发展趋势,客厅体积一般在60~130m3,采用L'nT,w进行撞击声隔声评价会导致其数值低于实验室测量指标Ln,w,约为3~6dB;采用现场测量指标L'nT,w进行撞击声隔声评价会受到接收房间体积的影响,因此建议在现场绿色建筑楼板撞击声隔声性能评价时同时参考L'n,w的测量结果。     

Correlation between dynamic stiffness of resilient materials and heavyweight impact sound reduction level

Installing resilient materials between the slab and the Ondol layer is known as the most popular method of reducing floor impact sound in Korean apartments. The Ondol layer is made up of lightweight concrete and mortar constructed on the upper part of the resilient material, and is a typical heating system used for all types of residential buildings in Korea. In Korea, lightweight impact sound and heavyweight impact sound are considered when evaluating the floor impact sound. The resilient materials used can be categorized according to dynamic stiffness. Resilient materials with a low dynamic stiffness reduce the lightweight floor impact sound level. In this study, to examine the relationship between dynamic stiffness and heavyweight impact sound level, the dynamic stiffness and floor impact sound level of 51 resilient materials were measured. The impact sound level of each of these resilient materials, whose dynamic stiffness was measured, was measured before and after installation, and the level difference (ΔL) was analyzed. The measurement results show that, if the dynamic stiffness of single-layered resilient materials is known, the dynamic stiffness of multi-layered structures of resilient materials can be predicted. Also, as the dynamic stiffness of resilient materials decreased, the heavyweight impact sound level also decreased, and there was a correlation between the dynamic stiffness and the heavyweight impact sound.     

保温隔声砂浆的配制与施工技术

通过在砂浆中掺入废橡胶颗粒、空心漂珠与聚苯颗粒的"三掺"复合技术,利用橡胶颗粒的黏弹性和空心漂珠的复合效应,改善楼板的撞击声压,空心漂珠的空腔结构和EPS颗粒的性能保证了砂浆的保温性能,所配制的保温隔声砂浆体积稳定性较好、热工性能好、隔声性能好,能满足楼板隔音和保温的综合功能要求,在项目试点楼板中进行了应用和性能测试,结果能满足高品质住宅保温和隔声的综合功能要求,形成的保温隔声砂浆施工技术对于楼板保温隔声施工提供了参考。     

Teil 2: Trittschalldämmung — Flankentrittschallpegel und Trittschallminderung

Sound protection of cavity floors. Part 2: Impact sound insulation — namely impact sound flanking level and impact sound reduction In part 1 [1] of this three‐part report on cavity floor sound protection, the history of the development of cavity floors introduced on the market since the early 1980s, the main design principles of such floors, and the concepts of flanking level reduction and weighted standard flanking level difference were illustrated. This second part examines two aspects of impact sound insulation, namely impact sound flanking level — previously sometimes referred to as horizontal impact sound insulation — and impact sound reduction. The following discussion of these two impact sound insulation parameters is based on approximately 150 measurements in an acoustics laboratory. The bulk of the measurements was carried out according to DIN 52 210 [3], more recent measurements according to DIN EN ISO 140‐12 [4].     

Schallschutz zwischen Reihenhäusern mit unvollständiger Trennung

Sound insulation between terraced houses with incomplete separation. Between terraced houses with double‐leaf partition walls a high quality of sound insulation can be accieved even with suitable structures to go through and attaced to the ground. Therefore it is required to have a sufficient high mass per unit area of the structures to go through, to have a sufficient high mass per unit area of the double‐leaf partition wall and to have a suitable spartial arrangement of the living rooms (floor plan). Different qualities of separation have to be distinguished. It is suggested, to establish a qualtitative ΔR_w‐additional for the prediction and calulation of the sound insulation in the German Standard DIN 4109. Measuring results of the frequency dependent reduction of the impact sound pressure level at the double‐leaf partition wall are presented.     

隔声楼面施工技术

隔声减震垫是一种弹性闭孔结构的垫层材料,在楼板上铺设这种垫层材料能有效降低楼板撞击声压传播,满足使用要求。介绍隔声楼面的构造、施工质量控制要点。