标准编号:	GB/T 27794-2023
中文名称:	电力电缆用预制混凝土导管
英文名称:	Precast concrete conduits for electric cable
中标分类:	Q14    混凝土制品
行业分类:	GB    国家标准
ICS分类:	91.100.30 91.100.30    混凝土和混凝土制品 91.100.30
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2023-03-17
实施日期:	2023-10-1
标准状态:	valid
替代旧标准:	GB/T 27794-2011 电力电缆用承插式混凝土导管
翻译语言:	英文
文件格式:	PDF
中文字符数:	25000 字
翻译价格(元):	1750.0
交付时间:	付款后 1~5 个工作日

This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents. This document replaces GB/T 27794-2011 Socket type concrete conduits for electric cable. In addition to structural adjustments and editorial changes, the following main technical changes have been made with respect to GB/T 27794-2011: a) The standard name has been changed to "Precast concrete conduits for electric cable"; b) Terms and definitions have been added (see Clause 3 hereof); c) The classification, dimensions and marking of products have been changed (see Clause 4 hereof; Clause 3 of Edition 2011); d) Reinforced concrete conduits for PVC-lined, CPVC-lined, and MPP-lined electric cables have been added (see 5.9); e) The requirements for raw materials have been modified (see Clause 5 hereof; Clause 4 of Edition 2011); f) The clause “General requirements” has been added (see Clause 6); g) The technical performance requirements for gaskets for cable conduit seals have been changed (see 6.8 hereof; Annex A of Edition 2011); h) The technical requirements have been modified (see Clause 7 hereof; Clause 5 of Edition 2011); i) The test methods have been modified (see Clause 8 hereof; Clause 6 of Edition 2011); j) The joint type and detail dimensions of precast unreinforced concrete conduits for electric cables are adjusted to Annex A (see Annex A; 3.3 of the Edition 2011); k) The joint types of precast reinforced concrete conduits for electric cables have been added (see Annex B); l) The design methods for flexural performance and external pressure load of precast reinforced concrete conduits for electric cables have been added (see Annex D). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights. This document was proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee on Cement Products of Standardization Administration of China (SAC/TC 197). This document was firstly issued in 2011, and this edition is the first revision. Precast concrete conduits for electric cable 1 Scope This document specifies the classification, dimensions, marking, raw materials, general requirements, technical requirements, test methods, inspection rules, as well as marking, packaging, transportation, storage and delivery certificate of precast concrete conduits for electric cables. This document is applicable to precast concrete conduits for electric cables that are factory-prefabricated and field-installed. 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 175 Common portland cement GB/T 700 Carbon structural steels GB/T 1499.1 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars GB/T 1499.2 Steel for the reinforcement of concrete - Part 2: Hot rolled ribbed bars GB/T 1596 Fly ash used for cement and concrete GB 8076 Concrete admixtures GB/T 13788 Cold rolled ribbed steel bars GB/T 14684 Sand for construction GB/T 14685 Pebble and crushed stone for construction GB/T 17431.1 Lightweight aggregates and its test methods - Part 1: Lightweight aggregates GB/T 18046 Ground granulated blast furnace slag used for cement, mortar and concrete GB/T 21120 Synthetic fibres for cement concrete and mortar GB/T 23265 Chopped basalt fiber for cement concrete and mortar GB/T 38143 Alkali-resistant glass fibres for cement concrete and mortar GB/T 50081 Standard for test methods of concrete physical and mechanical properties GB/T 50082 Standard for test methods of long-term performance and durability of ordinary concrete GB/T 50107 Standard for evaluation of concrete compressive strength GB 50119 Code for utility technical of concrete admixture GB 50164 Standard for quality control of concrete GB 50204 Code for acceptance of constructional quality of concrete structures GB/T 51003 Technical code for application of mineral admixture JC/T 946 Rubber gasket ring of concrete and reinforce concrete sewer pipes JGJ/T 12 Technical standard for application of lightweight aggregate concrete JGJ 55 Specification for mix proportion design of ordinary concrete JGJ 63 Standard of water for concrete JGJ/T 221 Technical specification for application of fiber reinforced concrete 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 precast concrete conduits for electric cable precast concrete members formed by concrete pouring (reinforced or unreinforced) and internally arranged with connecting pipe holes for electric cable laying Note: Referred to as cable conduit. 3.2 precast unreinforced concrete conduits for electric cable cable conduit made of plain concrete without steel skeleton 3.3 precast reinforced concrete conduits for electric cable electricity channel cable conduit with steel skeleton 3.4 flexible joint pipe joint of cable conduit adopting the joint type of elastic gasket ring or elastic packing sealing connection 3.5 rigid joint pipe joint of cable conduit with a joint type that uses a rigid material such as mortar to seal the connection 4 Classification, dimensions and marking 4.1 Classification 4.1.1 Cable conduits are divided into precast unreinforced concrete conduits for electric cables (code DH) and precast reinforced concrete conduits for electric cables (code DP) according to whether the steel skeleton is configured inside. Precast reinforced concrete conduits for electric cables are divided into lightweight aggregate reinforced concrete conduits for electric cables (code LDP) and ordinary reinforced concrete conduits for electric cables (code NDP) according to molding materials. 4.1.2 Reinforced concrete conduits for electric cables are divided into modified polyvinyl chloride (PVC) lined reinforced concrete conduits for electric cables (PVC-), chlorinated polyvinyl chloride (CPVC) lined reinforced concrete conduits for electric cables (CPVC-) and modified polypropylene (MPP) lined reinforced concrete conduits for electric cables (MPP-) lined according to the types of lined pipes.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification, dimensions and marking 5 Raw materials 6 General requirements 7 Technical requirements 8 Test methods 9 Inspection Rules 10 Marking, packaging, transportation and storage 11 Delivery certificate Annex A (Informative) Joint types and detail dimensions of precast unreinforced concrete conduits for electric cables Annex B (Informative) Joint types of precast reinforced concrete conduits for electric cables Annex C (Normative) Technical requirements for connecting rods Annex D (Informative) Design methods for flexural performance and external pressure load of precast reinforced concrete conduits for electric cables

前言 本文件按照GB/T 1.1-2020《标准化工作导则 第1部分：标准化文件的结构和起草规则》的规定起草。 本文件代替GB/T 27794-2011《电力电缆用承插式混凝土导管》，与GB/T 27794-2011相比，除结构调整和编辑性改动外，主要技术变化如下： a) 标准名称调整为“电力电缆用预制混凝土导管”； b) 增加了术语和定义（见第3章）； c) 更改了产品的分类、规格尺寸和标记（见第4章，2011年版的第3章）； d) 增加了内衬PVC、内衬CPVC、内衬MPP电力电缆用钢筋混凝土导管的相关内容（见5.9）； e) 更改了原材料要求（见第5章，2011年版的第4章）； f) 增加了一般要求（见第6章）； g) 更改了电缆导管密封用胶圈的技术性能要求（见6.8，2011年版的附录A）； h) 更改了技术要求（见第7章，2011年版的第5章）； i) 更改了试验方法（见第8章，2011年版的第6章）； j) 无筋混凝土电缆导管的接头型式及细部尺寸调整为附录A（见附录A，2011年版的3.3）； k) 增加了钢筋混凝土电缆导管接头型式（见附录B）； l) 增加了关于钢筋混凝土电缆导管管体抗弯性能和管体外压荷载设计方法（见附录D）。 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。 本文件由中国建筑材料联合会提出。 本文件由全国水泥制品标准化技术委员会（SAC/TC 197）归口。 本文件于2011年首次发布，本次为第一次修订。 电力电缆用预制混凝土导管 1 范围 本文件规定了电力电缆用预制混凝土导管的分类、规格尺寸、标记，原材料，一般要求，技术要求，试验方法，检验规则，以及标志、包装、运输、贮存和出厂证明书。 本文件适用于采用工厂预制、现场安装的电力电缆用预制混凝土导管。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。 GB175 通用硅酸盐水泥 GB/T 700 碳素结构钢 GB/T 1499.1 钢筋混凝土用钢 第1部分：热轧光圆钢筋 GB/T 1499.2 钢筋混凝土用钢 第2部分：热轧带肋钢筋 GB/T 1596 用于水泥和混凝土中的粉煤灰 GB 8076 混凝土外加剂 GB/T 13788 冷轧带肋钢筋 GB/T 14684 建设用砂 GB/T 14685 建设用卵石、碎石 GB/T 17431.1 轻集料及其试验方法 第1部分：轻集料 GB/T 18046 用于水泥、砂浆和混凝土中的粒化高炉矿渣粉 GB/T 21120 水泥混凝土和砂浆用合成纤维 GB/T23265 水泥混凝土和砂浆用短切玄武岩纤维 GB/T 38143 水泥混凝土和砂浆用耐碱玻璃纤维 GB/T 50081 混凝土物理力学性能试验方法标准 GB/T50082 普通混凝土长期性能和耐久性能试验方法标准 GB/T50107 混凝土强度检验评定标准 GB 50119 混凝土外加剂应用技术规范 GB 50164 混凝土质量控制标准 GB50204 混凝土结构工程施工质量验收规范 GB/T 51003 矿物掺合料应用技术规范 JC/T 946 混凝土和钢筋混凝土排水管用橡胶密封圈 JGJ/T 12 轻骨料混凝土应用技术标准 JGJ55 普通混凝土配合比设计规程 JGJ 63 混凝土用水标准 JGJ/T 221 纤维混凝土应用技术规程 3 术语和定义 下列术语和定义适用于本文件。 3.1 电力电缆用预制混凝土导管 precast concrete conduits for electric cable 采用混凝土浇筑成型，配筋或不配筋，内部布置有用于电力电缆铺设的连通管孔的预制混凝土构件。 注：简称电缆导管。 3.2 无筋混凝土电缆导管 precast unreinforced concrete conduits for electric cable 采用素混凝土制作.没有钢筋骨架的电缆导管。 3.3 钢筋混凝土电缆导管 precast reinforced concrete conduits for electric cable 电力排管 有钢筋骨架的电缆导管。 3.4 柔性接头 flexible joint 电缆导管的管节采用弹性密封圈或弹性填料密封连接的接头型式。 3.5 刚性接头 rigid joint 电缆导管的管节采用砂浆等刚性材料密封连接的接头型式。 4 分类、规格尺寸和标记 4.1 分类 4.1.1 电缆导管按内部是否配置钢筋骨架分为无筋混凝土电缆导管（代号DH）和钢筋混凝土电缆导管（代号DP）。钢筋混凝土电缆导管按成型材料分为轻集料钢筋混凝土电缆导管（代号LDP）和普通钢筋混凝土电缆导管（代号NDP）。 4.1.2 钢筋混凝土电 缆导管按内衬管材品种分为内衬改性聚氯乙烯（PVC）钢筋混凝土电缆导管（PVC-）、内衬氯化聚氯乙烯（CPVC）钢筋混凝土电缆导管（CPVC-）和内衬改性聚丙烯（MPP）钢筋混凝土电缆导管（MPP-）。