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低层轻型钢结构装配式住宅技术要求

发布时间:2015-12-25 10:09:18 浏览次数:781

《低层轻型钢结构装配式住宅技术要求》(JG/T×××-2004)作为产品标准,为了保证低层轻型钢结构装配式住宅这个特殊产品的安全性能、耐久性能和舒适性能,主要对住宅的材料、构造形式、紧固件、防护、保温与隔热、隔声、防潮、检验与试验、制作与安装、标志、包装、运输与贮存的技术要求作出了规定,这些技术要求指标是可以通过检验与试验确定的。

In order to ensure the safety performance, durability and comfort performance of the special products, such as material, structure, fastener, protection, insulation, insulation, insulation, sound insulation, sound insulation, inspection and testing, production and installation, marking, packaging, transportation and storage technology requirements, the technical requirements of these specifications can be determined by testing and testing, JG/T.

本产品标准共分为七章,即范围、规范性引用文件、术语和定义、分类与代号、要求、检验与试验以及标志、包装、运输与贮存。在第一章'范围'中,规定了本标准的所适用的结构体系和冷弯薄壁型钢住宅 体系的适用性。在第二章'规范性引用文件'中,列出了通过本标准的引用而构成本标准条文的有关规范、规程和标准。第三章'术语和定义',对冷弯薄壁型钢住宅体系的结构构件给出了规范性中英文名词及其解释。第四章'分类与代号',给出了构件的三种类形及其相应的表示代号,其中U形与C形截面用于基本构件,L形截面用于过梁或连接。第五章是标准的核心部分,在第五章'要求'中,对结构的钢材、螺栓与螺钉、围护材料粘接密封材料提出了要求。对楼盖、墙体和屋盖的结构构造与连接形式、紧 固件的选用要求进行了规定,满足这些要求,就可以满足结构的安全要求。在防火性能要求方面,国内防火规范要求较严,冷弯薄壁型钢住宅体系很难达到要求。因为这种体系是低层住宅,本标准所提出的防火要求体现了失火逃生的理念。因此,只对建筑构件的燃烧性能和耐火极限、房屋的长度、面积、间距、装修材料、管道及其包覆材料、构件内填充材料、火灾的封锁提出了基本要求。另外,在轻型钢结构骨架上加防火石膏墙板是可以大幅度提高构件的耐火极限的。为了保证结构的耐久性,要求冷弯薄壁型钢构件采用镀锌或镀铝锌进行防护,并参照美国试验与材料协会的标准,根据构件的使用环境,提出了镀层厚度要求。这种防护方法,可有效防止钢材锈蚀,即使表面有划痕,也可由锌或铝锌合金表面镀层通过自身的氧化来保护钢材不被锈蚀。据国外研究表明,在普通环境里,这种住宅的寿命可达到75年以上。为了保证住宅的保温、隔热、隔声(消声)与防潮性能,满足住宅舒适性要求,对楼面、外墙和屋面所采取的填充保温棉、喷射液体发泡材料或外贴泡沫隔热板材等保温与隔热措施,以及墙体、楼板和屋顶所采取吸音、隔声(消声)措施,住宅围护结构采取的防结露措施均提出了具体技术要求指标。为了保证住宅的综合性能,第五章还对构件的制作与安装以及设备的安装提出了要求。为了评价住宅的性能,第六章规定了住宅性能及技术要求指标的检验与试验方法。因为这种体系是工厂制作,现场拼装的装配式住宅,第七章对构件或单元的标志、包装、运输与贮存提出了要求。

This product standard is divided into seven chapters, namely, scope, normative reference documents, terms and definitions, classification and code, requirements, inspection and testing, as well as signs, packaging, transportation and storage. In the first chapter, the applicability of the structure system and the cold formed thin walled steel housing system is specified. In the second chapter, "normative references", the relevant standards, procedures and standards for the provision of cost standards are listed in the reference to this standard. In the third chapter, the term and definition of the structure of the cold formed thin walled steel housing system is given. Chapter four 'classification and code ", and gives the component of three kinds of shape and its corresponding said code, which u and C - shaped cross-section for basic component and L-shaped section for lintel or connection. The fifth chapter is the core part of the standard, in the fifth chapter 'requirements', on the structure of the steel, bolts and screws, retaining materials, the requirements of the bonding material. The structure of floor, wall and roof and connection forms, selection of fasteners required to carry out the provisions of that meet these requirements, you can meet the requirements of the safety of the structure. In the fire performance requirements, the domestic fire code requirements are more stringent, the cold formed thin-walled steel residential system is difficult to meet the requirements. Because this system is a low level of residential, the standard proposed by the fire requirements of the concept of fire escape. Therefore, only to the building components of the combustion performance and fire resistance limit, the length of the house, the area, spacing, decoration materials, pipes and its coating materials, components filled with materials, fire blocked the basic requirements of the proposed. In addition, the fire resistant gypsum board is added to the light steel structure frame, which can greatly improve the fire resistance limit of the component. In order to ensure the durability of the structure, the cold-formed thin-wall steel parts are made of galvanized or aluminized zinc for protection, and in the light of the standards of the American Society for testing and materials, according to the components of the use of the environment proposed coating thickness requirements. This protection method can effectively prevent steel corrosion, even if the surface has scratches, but also by the zinc or aluminum zinc alloy surface coating through its own oxidation to protect the steel is not corroded. According to foreign research shows that in the general environment, the life of this house can reach more than 75 years. In order to ensure that residential insulation, heat insulation, sound insulation (anechoic) and moistureproof performance, satisfies the requirements of residential comfort, of floor, wall and roof filling cotton insulation, spray liquid foaming material and paste foam insulation board, heat preservation and heat insulation measures, as well as the wall, floor and roof taken sound-absorbing, sound insulation, noise elimination measures, residential building envelope to take the dew prevention measures are put forward specific technical requirements. In order to ensure the comprehensive performance of the house, the fifth chapter also put forward the requirements for the production and installation of the components and the installation of the equipment. In order to evaluate the performance of the housing, the sixth chapter provides the test and test methods of residential performance and technical requirements. Because of this system is the factory production, the assembly of the assembly residential, the seventh chapter of the components or units of the signs, packaging, transportation and storage requirements.

在编制本标准时,编制组力求遵循实用的原则,因此对当前引进和应用较多的冷弯薄壁型钢体系住宅的针对性更强,为了不排除其他轻型钢结构住宅 体系或新型材料的采用,在相关条文中均留有余地,以利于住宅产业的技术进步和多样性发展。由于技术标准的实用性和针对性与住宅体系发展的多样性之间的矛盾,使得任何一本标准也不可能包罗万象,可能顾此失彼,针对性太强正是本标准的特点也是本标准的不足所在。另外,这种体系在国外虽然已经相当成熟,但在国内的应用还只刚刚起步,国内的研究工作开展还不够深入,研究成果还不能较好地指导工程应用,可供编制组参考的国内工程和资料十分有限,给编制工作带来了较大的困难,因此在编制过程中更多地借鉴了国外资料和经验。随着轻型钢结构住宅产业的发展,编制组将在不断总结国内外工程经验的基础上,结合各地对标准修改的建议,对标准适时修订和完善。

In the preparation of this standard, the preparation of the group to follow the principle of practical, so the introduction and application of more than the current residential construction of the cold formed thin walled steel, in order not to exclude other light steel structure residential system or new materials, in the relevant provisions are left room for the housing industry technological progress and diversity. Due to the practicality of technical standards and pertinence and housing system and the development of diversity between the contradictions, making any of the standard also can not be all inclusive, may attend, for so strong is the characteristics of this standard is the standard of the problem. In addition, although this system has been quite mature abroad, but in the domestic application has just started, the domestic research work is not deep enough, the research results can not guide the engineering application, can be used for the compilation of domestic engineering and information is very limited, to the preparation of the work has brought great difficulties, and in the process of drawing up more foreign information and experience. With the development of light steel structure housing industry, the group will continue to sum up the experience of domestic and foreign projects, combined with the recommendations on the standard revision, timely revision and improvement of standards.

 

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