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双层墙隔声量的SEA预测 总被引:2,自引:1,他引:1
黄险峰 《四川建筑科学研究》2006,32(1):164-166
双层墙隔声是一种对隔声要求高的建筑隔声措施,但缺乏理论预测,无法在施工阶段处理好隔声问题,本文作者应用统计能量分析(SEA)来预测双层墙结构的隔声问题,并对两墙基础分离与否对隔声的影响进行了研究。在这两种情况下,理论计算值与实测值符合得很好,说明了合理的SEA模型可以应用于双层墙隔声结构的隔声量预测。 相似文献
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针对住宅楼板隔声的重要性,阐述了楼板中噪声的传播和控制措施,介绍了3A住宅楼板隔声的施工,楼板隔声测试结果表明:客厅橡胶颗粒隔声方案和卧室木地板改进做法隔声方案均能起到明显的降低楼板撞击声的效果。 相似文献
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Hanifi Binici Orhan Aksogan Derya Bakbak Hasan Kaplan Bilge Isik 《Construction and Building Materials》2009,23(2):1035-1041
The aim of this paper is to find a better alternative for the insulation of industrial noise and to improve the mechanical properties of fibre reinforced mud bricks. It was observed that the fibre reinforced mud bricks fulfill the compressive strength and sound insulation requirements of the ASTM and Turkish Standards. Basaltic pumice as an ingredient was found to improve the sound insulation performance of fibre reinforced mud bricks. The experimental results showed that fibre reinforced mud brick, with basaltic pumice as ingredient, can be used in industrial buildings for walls to improve sound insulation. 相似文献
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Effect of loss factor on the sound insulation of hollow block masonry. Sound insulation is known to depend on the loss factor. In solid construction elements the loss factor is largely determined by the energy transfer to adjacent construction elements via the edges, so that the installation conditions influence the sound insulation. This effect is taken into account in the calculation models of EN 12354 through the so‐called in‐situ correction, whereby the overall loss factor of a component tested in the laboratory is converted to an expected loss factor in a real building. This paper illustrates how the loss factor correction should be applied for vertically perforated bricks with possible resonance frequencies from around 800 Hz. It was found that the correction can basically be applied in the same way as for homogeneous masonry, but only up the first resonance frequency of the brick. For higher frequencies the sound insulation was found to be independent of the installation conditions, so that in this range no loss factor correction should be applied. 相似文献
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Markus Sahl 《Bauphysik》2006,28(1):45-54
Airborne sound insulation and flanking sound insulation of façade constructions (Curtain wallings) in the test stand – findings for acoustic consulting in practice. Based on serial and single measurements for the determination of the weighted sound reduction index and of the normalized flanking sound insulation in horizontal and in vertical transmission direction of façades effects of the measurement procedure and of constructive façade details onto the measurement result are shown. For the performance of measurements of the weighted sound reduction index of façade constructions the possibility of the utilization of German standards DIN ENISO140‐3 in a test stand for wall constructions or of the in field procedure of DIN ENISO140‐5 in a test stand for the determination of the flanking sound insulation of façades is possible. Because the two measurement procedures lead to measurement results with systematically differences for the same façade construction, next to the formal aspect of the communicability of the two measurement procedures the mounting situation of façade elements in the test stand is taken into account. The influence of constructive details of the façade construction and their detailed effect on the determined weighted sound reduction index and/or the determined normalized flanking level difference is supposed to be shown due to carried out measurements of different façades. To that size, kind and order of the glazing, carrying out of façade molliums and façade transoms as well as construction of the façade connecting element as a single‐element for the determination of the normalized flanking sound insulation of a façade construction are taken into account. 相似文献
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介绍了噪声的隔声机理,噪声叠加、点声源随传播距离增加产生的声压级衰减值、面声源随传播距离增加产生的声压级衰减值的计算方法。探讨了降低城市集中供热锅炉房噪声的措施,认为封闭隔声措施效果较明显。 相似文献
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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。 相似文献
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曾庆钱 《建筑热能通风空调》2020,39(3):81-83,91
甲级写字楼对噪声标准要求较高,采用变风量(VAV)空调系统必须对噪声源及消声、隔声措施重点关注;噪声治理是系统工程,需要隔声、吸音、消声措施同时实施。噪声治理成本极高,且由于各种条件限制,后期治理未必能达到理想效果。 相似文献
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住宅设计中应高度重视楼板隔声问题 总被引:2,自引:0,他引:2
针对目前建筑设计中不重视楼板隔声,普通混凝土楼板撞击声隔声量不能达到国家标准不大于75dB的问题,提出采用浮筑地面、木地板装修、或粘贴阻尼板等技术手段,改善隔声性能,达到相关建筑隔声设计标准。 相似文献
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隔声屏障是降低车间、办公室噪声、特别是降低道路交通噪声非常有效的措施.屏障的隔声效果用屏障的隔声降噪量衡量.对常用的两种求解屏障隔声降噪量的方法分析后,认为存在值得探究的问题. 相似文献
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以石膏板、龙骨、隔热吸声材料、连接件为组成元件,研发了一种具有槽型结构的分片装配式隔墙。通过调整龙骨的形状与尺寸及其组装方式,优化墙体的抗弯刚度;通过合理组装墙体组元,改善墙体的隔热、隔声性能。试验结果表明,将两根异型C30×37.5×12×0.8龙骨侧立组装,将隔热吸声材料布置在龙骨与石膏板之间,阻断热桥、声桥,在墙体内部形成空腔的墙体结构,可以获得高抗弯刚度和优良的隔热、隔声性能的装配式墙体,组合龙骨的总惯性矩Iz=11.07 cm4,墙体的传热系数为0.65 W/(m2·K),隔声量达到41 dB。 相似文献
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外墙外保温与干挂石材及屋面保温综合技术的研究和应用 总被引:1,自引:1,他引:0
全国政协专委会办公楼工程,外墙装修时外墙干挂石材与外墙保温相结合,在外墙干挂石材钢骨架间的陶粒砖填充墙表面上安装珍珠岩保温板,无湿作法的污染渗透问题,外立面耐用、高雅、安装精度高,自重轻、保温隔声效果好。该工程屋面采用了硬质聚氨酯泡沫,防水保温一体化,提高了屋面防水保温效果,施工工期短,操作简便,节省工料。 相似文献
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混凝土搅拌站冬季施工时易受冷结冰,而传统的保温方法又无法保证正常的工作温度.为某HZS90型混凝土搅拌站设计加装自控温电加热保温系统,取得成效.自控温电加热保温系统采用内设加热电缆加热和外附保温层保温的方法,选择电加热元件防爆接线盒和电路空气短路开关,不影响原混凝土搅拌站的技术性能,系统运行安全有效,可保证施工工期,取得很好的经济效益. 相似文献