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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。 相似文献
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《建设科技(建设部)》2016,(16)
长期以来,住宅楼板撞击声一直影响着人们的居住品质。采用住宅楼板面层浮筑构造可以有效阻隔住宅楼板的撞击声,提高住宅楼板的隔声性能,使其达到绿色住宅建筑允许噪声级的标准。本文介绍了六种采用不同隔声减振材料形成的南方住宅楼板面层浮筑构造,并分析了各个住宅楼板建筑构造具有的特点。 相似文献
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浮筑楼板隔声系统虽能有效改善楼板撞击声隔声性能,却不能明显提升楼板空气声隔声性能。构思一种下置式楼板隔声系统,即将隔声、吸声材料铺设到楼板下方的做法,可以有效避免浮筑楼板易开裂的缺点。下置式楼板隔声系统还具有楼板混凝土模板拆卸便捷、楼板立模工序快等施工优点。设计出2种下置式楼板的构造方案,对每个方案的楼板进行声学测试,并结合工程实例的运用,最终得出下置式楼板隔声系统的研究结论。这些研究成果为下置式楼板隔声系统在未来绿色建筑中的发展做了铺垫。 相似文献
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详细介绍了常见住宅工程现浇混凝土楼板的裂缝特点及类型,分析了裂缝形成的机理性和非机理性原因,提出了控制裂缝形成及发展的对策和建议,以提高现浇钢筋混凝土楼板的质量,对工程设计、施工具有指导意义。 相似文献
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木地板改善混凝土楼板撞击声的隔声性能研究 总被引:1,自引:0,他引:1
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。 相似文献
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In this paper, the environmental impacts of two types of slab systems are studied. The first type, a concrete-based one-way spanning slab, is the most common solution in residential buildings in Spain. The second type, a hollow core slab floor, is increasingly becoming more used in buildings, but is not being broadly used in residential buildings as yet. The study is undertaken through the Life Cycle Analysis methodology, applying the EPS 2000 method. The assessment shows that the environmental impact of a building structure with precast concrete floors is 12.2% lower than that with in situ cast floors for the defined functional unit. 相似文献
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《Building and Environment》2001,36(5):637-655
In recent years, there has been a renewed interest in heated concrete slab floors to provide for space heating in both residential and commercial buildings. The existing design procedures for these heating systems are based on simplified thermal models with several assumptions. In particular, the simplified models assume that both the upper and the lower concrete slab surface are isothermal and that the heat transfer through the bottom of the slab surfaces is uniformly distributed over the entire surface. In this paper, a more realistic and flexible model for heated or cooled concrete slab floors is considered to determine the heat transfer between the concrete slab and the ground. In particular, steady-state and steady-periodic semi-analytical solutions are developed to determine the temperature field within the ground medium and within the concrete slab-on-grade floor where hot or chilled water pipes are embedded. The solution presented in this paper is applied to determine the ground heat loss/gain for a heated or cooled floor under various design conditions including the level of floor insulation, and the temperature of the water pipes. These solutions are obtained using the interzone temperature profile estimation (ITPE) procedure. Detailed analysis is presented to determine the effect of the slab insulation configuration on soil and slab temperature field and on the monthly variation of the total slab heat loss. 相似文献
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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]. 相似文献
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现行国家标准图集《建筑隔声与吸声构造》08J931中没有摘录塑胶地板的撞击声压级,一定程度上局限了塑胶地板在绿色建筑中的推广应用。本文通过对塑胶地板的楼板撞击声压级进行测量,对地塑面层对楼板撞击声压级隔声性能进行了分析,并针对几种采用塑胶地板的功能房间提出了可行的楼板构造,为采用塑胶地板作为楼板撞击声隔声问题的解决方案提供了参考。 相似文献
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从多高层建筑施工中钢筋混凝土裂缝的防控、外墙外保温体系的选用、结构的加固改造等方面的技术特点入手,探讨了施工企业的技术与管理,同时提出了自己的看法,对保证建筑产品质量,提升企业生存能力具有重要意义. 相似文献