標準編號:	GB/T 27794-2023
中文名稱:	電力電纜用預制混凝土導管
英文名稱:	Precast concrete conduits for electric cable
中標分類:	Q14    混凝土制品
行業分類:	GB    國家標準
ICS分類:	91.100.30 91.100.30    混凝土和混凝土制品 91.100.30
發布機構:	國家市場監督管理總局 國家標準化管理委員會
發布日期:	2023-03-17
實施日期:	2023-10-1
標準狀態:	valid
替代舊標準:	GB/T 27794-2011 電力電纜用承插式混凝土導管
翻譯語言:	英文
文件格式:	PDF
中文字符數:	25000 字
翻譯價格(元):	1750.0
交付時間:	付款后 1~5 個工作日

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《標準化工作導則 第1部分：標準化文件的結構和起草規則》的規定起草。 本文件代替GB/T 27794-2011《電力電纜用承插式混凝土導管》，與GB/T 27794-2011相比，除結構調整和編輯性改動外，主要技術變化如下： a) 標準名稱調整為“電力電纜用預制混凝土導管”； b) 增加了術語和定義（見第3章）； c) 更改了產品的分類、規格尺寸和標記（見第4章，2011年版的第3章）； d) 增加了內襯PVC、內襯CPVC、內襯MPP電力電纜用鋼筋混凝土導管的相關內容（見5.9）； e) 更改了原材料要求（見第5章，2011年版的第4章）； f) 增加了一般要求（見第6章）； g) 更改了電纜導管密封用膠圈的技術性能要求（見6.8，2011年版的附錄A）； h) 更改了技術要求（見第7章，2011年版的第5章）； i) 更改了試驗方法（見第8章，2011年版的第6章）； j) 無筋混凝土電纜導管的接頭型式及細部尺寸調整為附錄A（見附錄A，2011年版的3.3）； k) 增加了鋼筋混凝土電纜導管接頭型式（見附錄B）； l) 增加了關于鋼筋混凝土電纜導管管體抗彎性能和管體外壓荷載設計方法（見附錄D）。 請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。 本文件由中國建筑材料聯合會提出。 本文件由全國水泥制品標準化技術委員會（SAC/TC 197）歸口。 本文件于2011年首次發布，本次為第一次修訂。 電力電纜用預制混凝土導管 1 范圍 本文件規定了電力電纜用預制混凝土導管的分類、規格尺寸、標記，原材料，一般要求，技術要求，試驗方法，檢驗規則，以及標志、包裝、運輸、貯存和出廠證明書。 本文件適用于采用工廠預制、現場安裝的電力電纜用預制混凝土導管。 2 規范性引用文件 下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用于本文件。 GB175 通用硅酸鹽水泥 GB/T 700 碳素結構鋼 GB/T 1499.1 鋼筋混凝土用鋼 第1部分：熱軋光圓鋼筋 GB/T 1499.2 鋼筋混凝土用鋼 第2部分：熱軋帶肋鋼筋 GB/T 1596 用于水泥和混凝土中的粉煤灰 GB 8076 混凝土外加劑 GB/T 13788 冷軋帶肋鋼筋 GB/T 14684 建設用砂 GB/T 14685 建設用卵石、碎石 GB/T 17431.1 輕集料及其試驗方法 第1部分：輕集料 GB/T 18046 用于水泥、砂漿和混凝土中的粒化高爐礦渣粉 GB/T 21120 水泥混凝土和砂漿用合成纖維 GB/T23265 水泥混凝土和砂漿用短切玄武巖纖維 GB/T 38143 水泥混凝土和砂漿用耐堿玻璃纖維 GB/T 50081 混凝土物理力學性能試驗方法標準 GB/T50082 普通混凝土長期性能和耐久性能試驗方法標準 GB/T50107 混凝土強度檢驗評定標準 GB 50119 混凝土外加劑應用技術規范 GB 50164 混凝土質量控制標準 GB50204 混凝土結構工程施工質量驗收規范 GB/T 51003 礦物摻合料應用技術規范 JC/T 946 混凝土和鋼筋混凝土排水管用橡膠密封圈 JGJ/T 12 輕骨料混凝土應用技術標準 JGJ55 普通混凝土配合比設計規程 JGJ 63 混凝土用水標準 JGJ/T 221 纖維混凝土應用技術規程 3 術語和定義 下列術語和定義適用于本文件。 3.1 電力電纜用預制混凝土導管 precast concrete conduits for electric cable 采用混凝土澆筑成型，配筋或不配筋，內部布置有用于電力電纜鋪設的連通管孔的預制混凝土構件。 注：簡稱電纜導管。 3.2 無筋混凝土電纜導管 precast unreinforced concrete conduits for electric cable 采用素混凝土制作.沒有鋼筋骨架的電纜導管。 3.3 鋼筋混凝土電纜導管 precast reinforced concrete conduits for electric cable 電力排管 有鋼筋骨架的電纜導管。 3.4 柔性接頭 flexible joint 電纜導管的管節采用彈性密封圈或彈性填料密封連接的接頭型式。 3.5 剛性接頭 rigid joint 電纜導管的管節采用砂漿等剛性材料密封連接的接頭型式。 4 分類、規格尺寸和標記 4.1 分類 4.1.1 電纜導管按內部是否配置鋼筋骨架分為無筋混凝土電纜導管（代號DH）和鋼筋混凝土電纜導管（代號DP）。鋼筋混凝土電纜導管按成型材料分為輕集料鋼筋混凝土電纜導管（代號LDP）和普通鋼筋混凝土電纜導管（代號NDP）。 4.1.2 鋼筋混凝土電 纜導管按內襯管材品種分為內襯改性聚氯乙烯（PVC）鋼筋混凝土電纜導管（PVC-）、內襯氯化聚氯乙烯（CPVC）鋼筋混凝土電纜導管（CPVC-）和內襯改性聚丙烯（MPP）鋼筋混凝土電纜導管（MPP-）。