NF G38-021-2-中文
土工织物 - 柔软性的测定 - 第2部分:三维试验
NF G38-021-2-中文
Geotextiles - Determination of flexibility - Part 2: Three-dimensional test
标准信息
STANDARD INFORMATION- 标准编号
- NF G38-021-2-中文
- 所属分类
- NF 法国标准
- 发布机构
- AFNOR
- 版本年份
- 1995
- 文件语言
- 英语
- 文件格式
- 文件页数
- 6 页
- 文件大小
- 235.45 KB
中文名称为参考译名,文件语言以原文为准。
· 更新:
标准简介
OVERVIEW中文简介
该标准规定了在标准包装和试验条件下,通过三维变形试验测定土工织物及其相关产品柔软性的方法。它详细描述了试验设备、试件准备、环境条件及操作步骤,旨在通过测量特定充气压力下的球形拱顶变形与有效距离之比(e/B)来量化材料的柔软指数。
English summary
This standard specifies a method for determining the flexibility of geotextiles and related products using a three-dimensional deformation test under standard packaging and test conditions. It details the testing equipment, specimen preparation, environmental conditions, and operational procedures, quantifying flexibility by calculating the ratio of spherical dome deformation to effective span (e/B) at a specific inflation pressure.
以上为根据文件整理的内容简介。
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6 试件
6.1 形状和规格
试件的形状和规格应该允许可以内接一个直径至少为 450mm 的圆。
6.2 取样
根据 NF EN 963,通过一种合适的切割系统来取样。
6.3 试件的数量
每个试验至少含有三个试件,试件的有效距离分别是:100mm, 200mm, 300mm。
对于某些试验,可以采用更小的直径(50mm)。
7 包装和试验的环境
7.1 试验用样品的包装
除非有特殊的规定,试验用样品应被控制在温度为(20±2mm)°C 和相对大气湿度在 30% 到 70% 之间的条件下。平包装有利于样品的张驰,而且应该保证样品避免遭受太阳光的直射。
7.2 试验环境
应该在温度为(20±2mm)°C 且相对大气湿度在 30% 到 70%的条件下实施试验。对于某些试验,温度在(0±2)°C 会比较有利(寒冷时期实施试验)。
8 试验速度
8.1
试验速度是指充气压力在压力下上升的速度。其单位为千帕/分,范围为(100±5)kPa/min。
9 操作方式
9.1
将试件放在试验机器里(5.1),使试件的中心与充气室和变形室的对称轴重合。
9.2
放置并调整充气室和变形室之间的厚度调节系统。这两室间的距离《d》应如下:
(TGT+2σ)<d≤(TGT+2σ)+1 mm
且:
TGT 土工织物的厚度,依据 NF EN 964-1 测定 TGT;
σ 关于厚度测量的均方根偏差
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Révision de la présente publication
Le contenu technique des publications de la CEI est constamment revu par la Commission afin d'assurer qu'il reflète bien l'état actuel de la technique.
Les renseignements relatifs à ce travail de révision, à l'établissement des éditions révisées et aux mises à jour peuvent être obtenus auprès des Comités nationaux de la CEI et en consultant les documents ci-dessous :
- Bulletin de la CEI
- Annuaire de la CEI
- Catalogue des publications de la CEI
Publié annuellement
Terminologie
En ce qui concerne la terminologie générale, le lecteur se reportera à la Publication 50 de la CEI : Vocabulaire Electrotechnique International (VEI), qui est établie sous forme de chapitres séparés traitant chacun d'un sujet défini, l'Index général étant publié séparément. Des détails complets sur le VEI peuvent être obtenus sur demande.
Les termes et définitions figurant dans la présente publication ont été soit repris du VEI, soit spécifiquement approuvés aux fins de cette publication.
Symboles graphiques et littéraux
Pour les symboles graphiques, symboles littéraux et signes d'usage général approuvés par la CEI, le lecteur consultera :
- la Publication 27 de la CEI : Symboles littéraux à utiliser en électrotechnique ;
- la Publication 617 de la CEI : Symboles graphiques pour schémas.
Les symboles et signes contenus dans la présente publication ont été soit repris des Publications 27 ou 617 de la CEI, soit spécifiquement approuvés aux fins de cette publication.
Publications de la CEI établies par le même Comité d'Etudes
L'attention du lecteur est attirée sur la page 3 de la couverture, qui énumère les publications de la CEI préparées par le Comité d'Etudes qui a établi la présente publication.
Revision of this publication
The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology.
Information on the work of revision, the issue of revised editions and amendment sheets may be obtained from IEC National Committees and from the following IEC sources :
- IEC Bulletin
- IEC Yearbook
- Catalogue of IEC Publications
Published yearly
Terminology
For general terminology, readers are referred to IEC Publication 50 : International Electrotechnical Vocabulary (IEV), which is issued in the form of separate chapters each dealing with a specific field, the General Index being published as a separate booklet. Full details of the IEV will be supplied on request.
The terms and definitions contained in the present publication have either been taken from the IEV or have been specifically approved for the purpose of this publication.
Graphical and letter symbols
For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to :
- IEC Publication 27 : Letter symbols to be used in electrical technology ;
- IEC Publication 617 : Graphical symbols for diagrams.
The symbols and signs contained in the present publication have either been taken from IEC Publications 27 or 617, or have been specifically approved for the purpose of this publication.
IEC publications prepared by the same Technical Committee
The attention of readers is drawn to the inside of the back cover, which lists IEC publications issued by the Technical Committee which has prepared the present publication.
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SOMMAIRE
| pages | |
|---|---|
| Extrait de l'arrêté du 12 février 2004 relatif à la composition du cahier des clauses techniques générales applicables aux marchés publics de travaux et approuvant ou modifiant divers fascicules | III |
| Circulaire n° 2004-16 du 4 mars 2004 relative à la modification du fascicule 56 du Cahier des clauses techniques générales applicables aux marchés publics de travaux | V |
| Rapport de présentation | IX |
| Fascicule 56 | |
| Table des matières | 1 |
| Fascicule 56 | 7 |
| Annexes | 77 |
| Liste des membres du groupe de travail | 129 |
TABLE DES MATIÈRES
| Pages | |
| Extraits du décret n° 83-253 du 8 avril 1987 relatif à la composition du cahier des clauses techniques générales applicables aux marchés publics de travaux et approuvant ou modifiant divers fascicules | V |
| Fascicule n° 76 — Textes et commentaires | 2 |
| Annexes | 41 |
| Rapport de présentation | 71 |
: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:
| Part 1: | Non-alloy steel tubes with specified room temperature properties |
| Part 2: | Non-alloy and alloy steel tubes with specified elevated temperature properties |
| Part 4: | Non-alloy and alloy steel tubes with specified low temperature properties |
| Part 5: | Stainless steel tubes |
Another European Standard series covering tubes for pressure purposes is:
| EN 10217: | Welded steel tubes for pressure purposes |
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)
| Designation | Mass kg/m | Sectional area cm² | Dimensions | Distances of centre of gravity | Sectional properties about axes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X-X = Y-Y | U-U | V-V | ||||||||||||||
| A mm | l mm | rroot mm | cx = cy cm | cu cm | cv cm | Ix = Iy cm⁴ | rx = ry cm | Zx = Zy cm³ | Iu cm⁴ | ru cm | Iv cm⁴ | rv cm | Zv cm³ | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) | (17) |
| 200 × 200 × 16 | 48,5 | 61,8 | 200 | 16 | 18 | 5,52 | 14,1 | 7,81 | 2 340 | 6,16 | 162 | 3 720 | 7,76 | 960 | 3,94 | 123 |
| 200 × 200 × 20 | 59,9 | 76,3 | 200 | 20 | 18 | 5,68 | 14,1 | 8,04 | 2 850 | 6,11 | 199 | 4 530 | 7,70 | 1 170 | 3,92 | 146 |
| 200 × 200 × 24 | 71,1 | 90,6 | 200 | 24 | 18 | 5,84 | 14,1 | 8,26 | 3 330 | 6,06 | 235 | 5 280 | 7,64 | 1 380 | 3,90 | 167 |
| 250 × 250 × 28 | 104 | 133 | 250 | 28 | 18 | 7,24 | 17,7 | 10,2 | 7 700 | 7,62 | 433 | 12 200 | 9,61 | 3 170 | 4,89 | 309 |
| 250 × 250 × 35 | 128 | 163 | 250 | 35 | 18 | 7,50 | 17,7 | 10,6 | 9 260 | 7,54 | 529 | 14 700 | 9,48 | 3 860 | 4,87 | 364 |
NOTES
- Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
- 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.
- The sectional area has been calculated using the formula
S = [l/2 A - l) + 0,214 6 (rroot² - 2rtoe²)] × 1/100
where
S is the sectional area, in square centimetres;
l is the thickness, in millimetres;
rroot is the root radius, in millimetres;
rtoe is the toe radius, in millimetres;
A is the leg length, in millimetres.
- Mass is calculated on the basis of density of steel of 7,85 kg/dm³.
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