通用技术条款手册（适用于装备处的公共工程合同）第4分册第2卷：先张法或后张法预应力混凝土构造物施工用高强度钢筋

3.1.3.2

缺陷的检查可以采取目测的办法，也可以借助于非破坏性探伤法进行检查，比如磁性探伤。

3.1.3.2.

3.1.3.3.

3.1.3.4.

3.1.3.5. 钢筋使用条件下的密封长度可以与试验室进行试验所确定的常规长度不同（特别是由于试验室试验使用的常规水泥与建筑物实际使用的水泥质量不同的情况下），使用者如果认为有必要的话，可以在建筑物的特殊条件的情况下确定实际的密封长度。

在密封区域里面承受动应力的预应力件，可以通过在疲劳状态下测量密封长度的常规试验，也可以通过在这些预应力件上进行疲劳试验的办法检查粘着性固定抗疲劳性能。

钢筋混凝土的粘着性能与预应力混凝土的粘着性能不一样。钢筋混凝土的粘着性能系数与通用技术条款手册第4分册第1卷里面所确定的系数一致。

3.1.3.6. 在部际审批和检查委员会进行了试验结果的分析之后，将做出决定，其决定可为不同意或者有使用限制条件的同意。

3.1.7. 在部际审批和检查委员会进行了试验结果的分析之后，该性能试验可以让我们知道在使用的时候需要遵守哪些限制条件。

3.1.3.8. 在部际审批和检查委员会进行了试验结果的分析之后，该性能试验可以让我们针对其总体性能做出一个评判。

3.1.4.

3.1.3.2. 焊接限制条件应该符合以下第2到第6部分的规定。

3.1.3.3. 抗交替折叠性能通过符号N表示（N是在试件断裂之前，试件90度折叠后又拉直的的次数）。

3.1.3.4. 抗撞击强度的表示符号为KCV。在弯曲试验中，放置在V形状槽口的试件受到撞击，在0摄氏度条件下测量出其抗撞击强度，可参见现行法国标准。试件取自于与钢筋轴平行的预应力钢筋的内部。

3.1.3.5. 混凝土粘着性，表现为：

- 常规的密封长度，表示符号为Les，通过混凝土的必要覆盖长度确定，这是为了保证在常规试验的条件下混凝土钢筋的总预应力的传递；

- 混凝土的粘着性系数，显示了钢筋-混凝土的结合情况（钢筋混凝土的粘着性）；

3.1.3.6. 波动拉力下的抗疲劳强度确定的是两个既定应力之间的拉力循环次数（在试件断裂之前）。

3.1.3.7. 受张力情况下的防腐蚀性能。

3.1.3.8. 多轴应力强度。

3.1.4. 对于每种类型的钢筋，只考虑以上的性能部分。

在许可审批和检查规则中对符合性检查需要考虑的性能进行了描述。

对于所有类型的钢筋，在抗拉强度的基础上确定了钢筋的大类，在松弛值的基础上确定了钢筋的子类（用RN和TBR标记）。这些大类和子类的作用就是为了对钢筋进行命名（在每种类型的钢筋的相应截面中明确说明了常规名称）。

ULTE 83/14 quarter. — 2

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2

TABLE DES MATIERES

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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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

5

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.

   4