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BSI对钢结构和铝结构标准进行修订以保证足够的稳定性和耐久性

发布时间: 2018-08-28 10:08:10   审校:睿智   浏览次数:
来源:https://www.bsigroup.com/en-GB/about-bsi/media-centre/press-releases/2018/august/standard-for-steel-  

BSI(英国标准协会)发布BS EN 1090-2:2018钢结构和铝结构的施工 --钢结构的技术要求

这项欧洲标准规定了钢结构的施工要求,以确保足够的机械阻力、稳定性、可用性与耐久性。BS EN 1090-2标准是由五部分组成,修订后的BS EN 1090-2标准作为其中的第二部分,明确了以下各类型结构钢的施工要求(这些结构钢或作为建筑结构,或作为生产组件):

  • 热轧的结构钢制品,强度高达S700(含S700)
  • 冷压成型的组件和薄板材料,强度高达S700(含S700)(在BS EN 1090-4标准范围内的除外)
  • 热轧或冷压成型的奥氏体、奥氏体-铁素体、铁素体不锈钢产品
  • 热轧或冷压成型的结构用空心型钢,包括标准范围内的与定制的压延制品、焊接而成的空心型钢。

相比于之前的标准,2018版标准中的主要变动如下:

  1. 有关以下制品的技术要求在BS EN 1090系列标准的第四部分(EN 1090-4)中列出,因而在第二部分的标准中删除:冷压成型的结构钢单元、构件与薄片;用于屋顶、天花板、地板、墙壁以及围护结构的冷压成型的钢结构。
  2. BS EN 1993-1-1:2005/A1:2014标准的附录C中现已包含为选择施工材料类别提供指导的标准性要求,因而相应的资料性附录B在此标准中删除。
  3. 增加了新的资料性附录D,为热切割性能的检查流程提供指导
  4. 增加了新的资料性附录I,为确定预压连接中接触面厚涂层的预压损失提供指导
  5. 删除了标准性附录J——可压缩垫圈型直接张力指示器的使用
  6. 增加了新的资料性附录L,为选择焊接检验分类提供指导

英国建筑钢结构协会的工程总监大卫·摩尔博士(Dr David Moore)说:“BS EN 1090-2标准的执行等级是由钢结构承包商用于实施一系列制造过程控制,从而形成经过认证的工厂生产控制系统,用于CE标志的装配钢结构。这些标准为选择所需的质量和保证控制措施提供了通用的方法,以确保结构符合工程师的设计。”

Standard for steel and aluminium structures revised in order to ensure adequate stability and durability

BSI, the business standards company, has published BS EN 1090-2:2018Execution of steel structures and aluminium structures. Technical requirements for steel structures.

This European Standard specifies requirements for execution of steel structures, in order to ensure adequate levels of mechanical resistance and stability, serviceability and durability. As part two of a five part standard, the revised BS EN 1090-2 specifies requirements for execution of structural steelwork as structures or as manufactured components, produced from:

  • Hot rolled, structural steel products up to and including grade S700
  • Cold formed components and sheeting up to and including grade S700 (unless coming within the scope of BS EN 1090-4)
  • Hot finished or cold formed austenitic, austenitic-ferritic and ferritic stainless steel products
  • Hot finished or cold-formed structural hollow sections, including standard range and custom-made rolled products and hollow sections manufactured by welding

The main changes in the 2018 version of the standard over its predecessor are as follows:

  1. Technical requirements for cold-formed structural steel elements, members and sheeting and cold-formed steel structures for roof, ceiling, floor, wall, and cladding applications have been removed from this Part of the BS EN 1090 series, as they are given in EN 1090-4
  2. Informative Annex B giving guidance for the determination of execution class has been removed as normative requirements for the selection of execution class are now included in of BS EN 1993-1-1:2005/A1:2014, Annex C
  3. A new informative Annex D has been included giving guidance on a procedure for checking the capability of thermal cutting processes
  4. A new informative Annex I has been included giving guidance on determination of the loss of preload from thick coatings on contact surfaces in preloaded connections
  5. Normative Annex J “Use of compressible washer-type direct tension indicators” has been removed
  6. A new informative Annex L has been included giving guidance on the selection of weld inspection classes

Dr David Moore, Director of Engineering at the British Constructional Steelwork Association, said: “Execution classes from BS EN 1090-2 are used by steelwork contractors to put in place a set of manufacturing process controls that form part of a certified factory production control system for CE-marking fabricated steelwork. They offer a common approach to selecting the right level of quality and assurance controls needed to ensure the structure meets the engineer’s design assumptions.”

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