ISO-10804-1-1996.pdf
《ISO-10804-1-1996.pdf》由会员分享,可在线阅读,更多相关《ISO-10804-1-1996.pdf(7页珍藏版)》请在三一文库上搜索。
1、INTERNATIONAL STANDARD IS0 10804-I First edition 1996-12-15 Restrained joint systems for ductile iron pipelines - Part 1: Design rules and type testing Assemblages verrouill a=400net; p=iso; o=isocs; s=central Printed in Switzerland Copyright International Organization for Standardization Provided b
2、y IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:56:09 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD 0 IS0 IS0 10804-1:1996(E) Restrained joint systems for ductile iron pipelines - Part 1: Des
3、ign rules and type testing 1 Scope This part of IS0 10804 specifies design rules and type testing for restrained joint systems to be used on ductile iron pipelines complying with IS0 2531 and IS0 7186, in order to determine their mechanical properties and leaktightness. 2 Normative references The fo
4、llowing standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 10804. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 10804 are encouraged
5、to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 2531 : 1991, Ductile iron pipes, fittings, and accessories for pressure pipelines. IS0 6708 : 1995, Pipework
6、 components - Definition and selection of DN (nominal size). IS0 7186 : 1996, Ductile iron products for sewerage applications. 3 Definitions For the purposes of this part of IS0 10804 the definitions given in IS0 6708 and the following definitions apply : 3.1 restrained joint : Joint in which a mean
7、s is provided to prevent separation of the assembled joint. 3.2 allowable operating pressure : Internal pressure, excluding surge, that a component can safely withstand in permanent service. 3.3 maximum allowable operating pressure : Maximum internal pressure, including surge, that a component can s
8、afely withstand in service. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 02:56:09 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10804-l :1996(E
9、) 0 IS0 3.4 allowable test pressure : Maximum internal hydrostatic pressure which can be applied on site to a component in a newly installed pipeline. NOTE - This test pressure is different from the system test pressure, which is related to the design pressure of the pipeline and is intended to ensu
10、re its integrity and leaktightness. 3.5 allowable bending moment : Bending moment that a joint between two components can safely withstand in service under the allowable operating pressure. 3.6 type test : Proof of design test which is done once, and is repeated only after change of design. 3.7 allo
11、wable angular deflection : Angular deflection that a joint between two components can safely withstand in service under the allowable operating pressure. 4 Design rules 4.1 All restrained joints for ductile iron pipes, fittings and other components shall be designed with the requirements of this cla
12、use. If the design of a restrained joint has been tested and successfully used for a minimum of ten years, a type test as described in clause 5 is only required for a significant change in the design which could adversely affect the performance of the restrained joint. 4.2 The design safety factors
13、with respect to failure against axial forces due to internal pressure shall be such that the joints can withstand a type test pressure of 1,5 times allowable operating pressure plus 5 bar l). 4.3 Alternatively, for those restrained joints which are rigid enough to be subjected to a bending moment th
14、e design safety factor with respect to failure against the combined effects of axial forces and a bending moment shall be at least 2 at the allowable operating pressure and allowable bending moment. 4.4 Ductile iron pipelines and the restrained joints as defined in this part of IS0 10804 are well su
15、ited for use in seismic zones. However, certain locations, such as fault crossings, liquefaction zones, connections to structures, etc., require specialized designs. The pipe manufacturer or a competent earthquake engineer should be consulted. 4.5 For joint restraint components, the protection again
16、st aggressive soils shall be at least as good as that of the pipes and/or fittings. It may be achieved by means of works applied coatings and/or site applied protection systems. 11 bar=10sN/m2=105Pa=0,1MPa 2 Copyright International Organization for Standardization Provided by IHS under license with
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 10804 1996
链接地址:https://www.31doc.com/p-3773981.html