欧洲规范 6：圬工工程计算—第 1-2 部分：一般规则—耐火性能计算—法国国家附件

欧洲标准 6—圬工工程计算 第 1-2 部分：一般规则—耐火性能计算

（9）欧洲规范《火灾》部分里的安全防火研究方法，已包含在此领域里的法国规章条例中。因此，不同计算模型的使用条件，不管是对热力作用的量化还是对结构力学的反应，均已纳入内务部颁发的部令中加边框说明（在本国家附件颁布之日，有效的部令是 2004 年 3 月 22 日颁布的关于建筑和构造物产品、构件耐火度的部令）。

在该项法规条文中，可以区分：

—热作用的 2 种可能不同的研究方法；

○ a) 公称火灾，是先验推理确定的火灾，它构成了施工规定说明上的基本要求，而这些要求则是由每种类型建筑物或构造物的有关的法规确定的，

○ b) 实际火灾的过程，应当根据一个特定的建筑物或构造物中发生的特殊的散热情况来进行评估。

—对于结构耐火度的验证模式，可能有三种不同等级的方法：

○ 1）把数据制成表格，在表格中，对荷载的不同级别，根据它们的几何尺寸的大小，来给出结构构件的耐火时间。

○ 2）简化的计算方法，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，应该能够考虑到构件与整体结构之间的相互作用。

对于第 FN EN 1996-1-2 号法国/欧洲标准的应用，研究方法 2）（简化计算方法）和方法 3）（预测计算方法）是不允许使用的。

因此，只有相关公称火灾（标准化火灾）的研究方法 1），在执行 2004 年 3 月 22 日部令的范畴内，通常是允许使用的。

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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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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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