欧洲规范1：结构上的作用力 第1-2部分：一般作用力—暴露于火灾的结构上的作用力 法国/欧洲标准的国家附件

欧洲规范 1：结构上的作用力

(8)《为国家层面确定的参数》被加上了边框，以便更加明了。文件的其他内容为欧洲标准在法国领土上的实施，提供了不矛盾性的补充。

(9) 欧洲规范中《火灾》部分里的安全防火（研究）方法，与此领域里的法国规章条文是一致的。因此，不同计算模型的使用条件，无论是热力作用的量化还是对结构的力学反应，都已包含在内务部颁布的部令中（在该国家附件出版之日，现行有效的部令是 2004 年 3 月 22 日颁布的关于建筑物和构造物产品和构件耐火度的部令）。

在该项法规条文中，可以区分：

—热力作用可能的两种不同的研究层次；

a) 公称火灾，是指先验确定的火灾，是每类建筑物或构造物自身的规章条文提出的强制性要求说明的基础。

b) 实际火灾，是指应当根据在一栋单独的建筑物或构造物里产生的特定的散热情况，进行评估的实际火灾场景。

—对于结构物耐火性能的验证模型，可能有三种研究方法：

1) 列表法，即把数据列成表格的方法，在表格中，对于几种荷载等级，根据它们的几何尺寸，来给出结构构件的耐火时间。

2) 简化计算方法，指的是使用解析公式对解决方案进行方便地分析。

3) 称之为预测计算方法，是指应该能够考虑到构件与整体结构之间的相互作用的方法。

根据 2004 年 3 月 22 日部令的要求，这些方法的使用条件在下表中列出：

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IEC publications prepared by the same Technical Committee

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SOMMAIRE

TABLE DES MATIÈRES

:current

Foreword

This document (EN 10216-3:2002) has been prepared by Technical Committee EC/TC 29, "Steel tubes and fittings for steel tubes", the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.

Other Parts of EN 10216 are:

Another European Standard series covering tubes for pressure purposes is:

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

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ISO 657-1 : 1988 (E)

Table 1 — Dimensions and sectional properties of hot-rolled equal-leg angles (concluded)

NOTES

1. Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
2. For the angles so chosen, only thicknesses which can be rolled in their mills to meet the demand of the users may be selected from the list of thicknesses corresponding to equal angles in table 1.
3. The sectional area has been calculated using the formula

   S = [l/2 A - l) + 0,214 6 (r_root² - 2r_toe²)] × 1/100

   where
   

   S is the sectional area, in square centimetres;
   

   l is the thickness, in millimetres;
   

   r_root is the root radius, in millimetres;
   

   r_toe is the toe radius, in millimetres;
   

   A is the leg length, in millimetres.

4. Mass is calculated on the basis of density of steel of 7,85 kg/dm³.

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