GB/T 5352-2005

📋 Scope / 适用范围 ai_extracted

This standard specifies the specimens, test conditions, test procedures, test results, and test report for determining the external loading performance of fiber-reinforced thermosetting plastic pipes using two parallel loading plates. This standard is applicable for determining the pipe stiffness, stiffness factor, and load-deflection curve of fiber-reinforced thermosetting plastic pipes. It may also be used as a reference for other composite material pipes.

📝 Foreword / 前言 ai_extracted

This standard corresponds to ASTM D2412-96a, "Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading," with a non-equivalent degree of consistency. This standard replaces GB/T 5352-1985, "Test Method for External Loading Performance of Fiber-Reinforced Thermosetting Plastic Pipe by Parallel-Plate Loading." The main changes in this standard compared to GB/T 5352-1985 are as follows: — A chapter on normative references has been added (see Chapter 2); — The International System of Units (SI) is adopted. This standard is proposed by the China Building Materials Industry Association. This standard is under the jurisdiction of the National Fiber-Reinforced Plastics Standardization Technical Committee. The main drafting unit of this standard is: Beijing FRP Research and Design Institute. Participating drafting units of this standard include: Zhejiang Dongfang Haobo Pipe Co., Ltd., and Tianjin Baiyang Environmental Protection Equipment Co., Ltd. The main drafters of this standard are: Li Jiancheng, Zhang Haiyan, Wang Minghui, and Zhang Zhenhua. This standard was first issued in September 1985 and was first revised in May 2005. www.bzfxw.com GB/T 5352-2005 Test Method for External Loading Performance of Fiber-Reinforced Thermosetting Plastic Pipe by Parallel-Plate Loading

📚 References & Relations / 引用与关联

📖 Terms & Definitions / 术语和定义 ai_extracted

管径向变形率

pipe radial deflection 管径变化量与初始内径的百分比。

Pipe radial deflection: The percentage of the change in pipe diameter relative to the initial inner diameter.

线载荷linear

load 施加于管单位长度上的载荷。

Load The load applied per unit length of the pipe.

平均半径mean

radius 平均外径与平均壁厚之差的二分之一，即管壁中心半径。

Radius Half of the difference between the average outer diameter and the average wall thickness, i.e., the radius at the center of the pipe wall.

管刚度pipe

stiffness 线载荷除以相应的管径变化量所得的值。

stiffness The value obtained by dividing the linear load by the corresponding change in pipe diameter.

Mi

l度因子 stiffness factor 管刚度与0. 149r3的乘积。

Stiffness factor: The product of pipe stiffness and 0.149r³.

管显著性事件pipe / pipe for significant events

significant event 指管内衬开裂或龟裂、管壁开裂或分层等。

Significant event: refers to cracking or crazing of the inner lining, cracking or delamination of the pipe wall, etc.

内衬开裂或龟裂li

ner cracking or crazing 在管内衬上出现可见裂纹或网状细裂纹。 www.bzfxw.com GB/T 5352-2005

Ner cracking or crazing Visible cracks or fine network cracks appearing on the inner lining of the pipe. www.bzfxw.com GB/T 5352-2005

管壁开裂wall

cracking 在管壁上出现可见裂纹。

cracking Visible cracks appear on the pipe wall.

管壁分层

wall delamination 在管壁中出现可见分层。 3. 11 加载板 l oading plate 对试样施加径向载荷的两块互相平行的钢板。

wall delamination Visible delamination occurring within the pipe wall. 3. 11 loading plate Two mutually parallel steel plates that apply radial load to the test specimen.

🔗 Related Standards / 同类标准