钢筋混凝土用钢筋焊接性能

9.1.3 剪切试验

进行剪切试验，应保证在任何时刻都不出现折弯现象；为此，应固定直径最小的钢筋，荷载应作用于直径较大的钢筋。

9.2 可焊性试验所需的组件选择

如果样品包括直径不同的钢筋，那么应按照第 5 段规定进行试验，按第 8 段抽取组件。

10 标识

符合本标准的高粘附力钢筋，应遵守标准 NF A 35-016 和 NF A 35-019 做标识的原则。

附录 A 在十字形焊接组件上进行折弯试验的条件

折弯试验用的套筒直径与被测试钢筋的材质和直径相匹配。

焊缝位于牵引区域。

根据标准 NF A 03-157 的规定、或者在工地弯折机上进行试验。

后一种情况下，应特别注意使焊缝位于折弯区域，如下图所示。

焊缝应位于折弯区域内

D/2芯轴直径

焊接焊缝

如果焊缝位于折弯区域外，则取消试验。

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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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