標準編號:	GB/T 22395-2022
中文名稱:	鍋爐鋼結構設計規(guī)范
英文名稱:	Specification for design of boiler steel structures
中標分類:	J98    鍋爐及其輔助設備
行業(yè)分類:	GB    國家標準
ICS分類:	27.060.30 27.060.30    鍋爐和熱交換器 27.060.30
發(fā)布機構:	國家市場監(jiān)督管理總局 國家標準化管理委員會
發(fā)布日期:	2022-7-11
實施日期:	2023-2-1
標準狀態(tài):	valid
替代舊標準:	GB/T 22395-2008 鍋爐鋼結構設計規(guī)范
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	95000 字
翻譯價格(元):	6000.0
交付時間:	付款后 1 個工作日

Specification for design of boiler steel structures 1 Scope This document specifies the design principles and methods of supported and suspended boiler steel structures. This document is applicable to the design of supported and suspended boiler steel structures. 2 Normative references The following referenced documents are indispensable for the application 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/T 700 Carbon structural steels GB/T 1228 High strength bolts with large hexagon head for steel structures GB/T 1229 High strength large hexagon nuts for steel structures GB/T 1230 High strength plain washers for steel structures GB/T 1231 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures GB/T 1591 High strength low alloy structural steels GB/T 3632 Sets of torshear type high-strength bolt hexagon nut and plain washer for steel structures GB/T 5117 Covered electrodes for manual metal arc welding of non-alloy and fine grain steels GB/T 5118 Covered electrodes for manual metal arc welding of creep-resisting steels GB/T 5293 Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels GB/ T 5313 Steel plate with through-thickness characteristics GB/T 12470 Solid wire electrodes, tubular cored electrodes and electrode/ flux combinations for submerged arc welding of creep-resisting steels GB 50009 Load code for the design of building structures GB 50011 Code for seismic design of buildings GB 50017-2017 Standard for design of steel structures GB 50019 Design code for heating ventilation and air conditioning of industrial buildings GB 50205 Code for acceptance of construction quality of steel structures GB 50661 Code for welding of steel structures JGJ 82 Technical specification for high strength bolt connections of steel structures JGJ 99-2015 Technical specification for steel structure of tall building NB/T 47043 Technical specification for manufacture of boiler steel structures NB/T 47055 Painting and packing specification of boiler 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 frame structure structure with shear and bending resistance composed of rigid connections between columns and girder 3.2 frame-bracing structure structure of lateral resistant system composed of frame and bracing 3.3 bracing structure structure with resistance to lateral action by the axial stiffness of the bracing member obliquely arranged in the plane where the girder-column member is located 3.4 main column column that mainly bears the load of boiler body, wind load and seismic action 3.5 main boiler support level general name of the load girder suspended or supported by the boiler body at the top of the boiler steel structure 3.6 main girder girder in the main boiler support level that directly transmits the load of the boiler body to the column 3.7 secondary girder girder connected to the main girder and transmitting load to the main girder ? 3.8 horizontal split girder girder consisting of upper and lower parts (or multiple parts), which are bolted or welded together to work 3.9 deep beam simply supported single span beam with height span ratio greater than 1/6 3.10 boiler guide limiting structure for "expansion center" of suspended boiler 4 General 4.1 The boiler steel structure shall be capable of supporting the components of the boiler body and maintaining their relative positions, bearing wind loads, snow loads and seismic actions, and bearing the loads provided by the design unit of the power station and agreed to act on the boiler steel structure. Unless otherwise specified, the boiler steel structure shall not directly bear the dynamic load. 4.2 In the design of boiler steel structure, the structural scheme, materials, connection methods and structural measures shall be reasonably selected to meet the strength, stability and stiffness requirements of structural members during transportation, installation and use. 4.3 The limit state design method based on probability theory shall be adopted for the boiler steel structure, which shall be calculated by partial factor design expression and designed according to the ultimate limit state and serviceability limit state. 4.4 The ultimate limit state shall include: strength failure and brittle fracture of member or connection, inapplicability to continuous load carrying due to excessive deformation, loss of stability of the structure or member, transformation of the structure into maneuvering system, and overturning of structure; the serviceability limit state shall include: deformation affecting the normal service or appearance of structure, member and non-structural member, vibration affecting the serviceability, and local damage affecting the serviceability or durability. 4.5 When the boiler steel structure is designed according to the ultimate limit state, the basic combination and accidental combination of load (action) effect shall be adopted. When the boiler steel structure is designed according to the serviceability limit state, the standard combination of load (action) effect shall be adopted. ? 4.6 Boiler steel structures in the areas with a seismic fortification intensity of 6 degrees or above shall be subjected to seismic design. This document is applicable to the design of boiler steel structure in areas with seismic fortification intensity of 6 to 9 degrees. When the seismic fortification intensity is greater than 9 degrees, it shall be implemented according to special regulations. 4.7 Open-air layout and tight closed boiler steel structure shall be checked for wind resistance. 4.8 Members shall avoid high temperature (above 150°C). For members subjected to high temperature for a long time, heat insulation or cooling measures shall be taken in addition to selecting appropriate steel. 4.9 The length of temperature section (spacing of expansion joints) of boiler steel structure shall not exceed 120m when arranged in the open air and not exceed 150m when closed tightly, and the influence of temperature stress and temperature deformation may not be included. 4.10 In the design of boiler steel structure located in cold area, measures shall be taken to improve the brittle fracture resistance of the structure. 4.11 No matter what connection form is adopted for the joints of boiler steel structure, when the joints are regarded as rigid connections, the assumption that the intersection angle of members at the joints is unchanged during the stress process shall apply, and the connections shall have sufficient strength to bear all the most unfavorable internal forces transmitted at the ends of the intersection members. When the joint is regarded as articulated, the joint shall have sufficient rotational capacity, but can effectively transmit transverse shear force and axial force. 4.12 The structural safety level of boiler steel structure is Level II, and the importance coefficient (?0) shall be taken as 1.0. 4.13 The natural environment conditions required for boiler steel structure design include:

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General 5 Provisions on materials, design indexes and structural (member) deformation 6 Layout of boiler steel structure 7 Actions and combinations of effects 8 Analysis of structure 9 Beam design 10 Design of column 11 Design of bracing system 12 Design of connections 13 Seismic bearing capacity checking calculation and seismic structure measures of boiler steel structure connection nodes 14 Rust-proof and corrosion resistance treatment of boiler steel structure

鍋爐鋼結構設計規(guī)范 1 范圍 本文件規(guī)定了支承式和懸吊式鍋爐鋼結構的設計原則和方法。 本文件適用于支承式和懸吊式鍋爐鋼結構的設計。 2 規(guī)范性引用文件 下列文件中的內容通過文中的規(guī)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。 GB/T 700 碳素結構鋼 GB/T 1228 鋼結構用高強度大六角頭螺栓 GB/T 1229 鋼結構用高強度大六角螺母 GB/T 1230 鋼結構用高強度墊圈 GB/T 1231 鋼結構用高強度大六角頭螺栓、大六角螺母、墊圈技術條件 GB/T 1591 低合金高強度結構鋼 GB/T 3632 鋼結構用扭剪型高強度螺栓連接副 GB/T 5117 非合金鋼及細晶粒鋼焊條 GB/T 5118 熱強鋼焊條 GB/T 5293 埋弧焊用非合金鋼及細晶粒鋼實心焊絲、藥芯焊絲和焊絲-焊劑組合分類要求 GB/T 5313 厚度方向性能鋼板 GB/T 12470 埋弧焊用熱強鋼實心焊絲、藥芯焊絲和焊絲-焊劑組合分類要求 GB 50009 建筑結構荷載規(guī)范 GB 50011 建筑抗震設計規(guī)范 GB 50017—2017 鋼結構設計標準 GB 50019 工業(yè)建筑供暖通風與空氣調節(jié)設計規(guī)范 GB 50205 鋼結構工程施工質量驗收標準 GB 50661 鋼結構焊接規(guī)范 JGJ 82 鋼結構高強度螺栓連接技術規(guī)程 JGJ 99—2015 高層民用建筑鋼結構技術規(guī)程 NB/T 47043 鍋爐鋼結構制造技術規(guī)范 NB/T 47055 鍋爐涂裝和包裝通用技術條件 3 術語和定義 下列術語和定義適用于本文件。 3.1 框架結構 frame structure 由柱和梁剛性連接組成的具有抗剪和抗彎能力的結構。 3.2 框架-支撐結構 frame-bracing structure 由框架和支撐共同組成抗側力體系的結構。 3.3 支撐結構 bracing structure 在梁柱構件所在平面內，沿斜向設置支撐構件，以支撐軸向剛度抵抗側向作用的結構。3.4 主柱 main column 主要承受鍋爐本體荷載、風荷載和地震作用的柱。 3.5 頂板 main boiler support level 鍋爐鋼結構頂部懸吊或支承鍋爐本體荷重梁的總稱。 3.6 頂板主梁 main girder 頂板中直接把鍋爐本體荷載傳給柱的梁。 3.7 頂板次梁 secondary girder 與頂板主梁相連，把荷載傳給頂板主梁的梁。 3.8 疊梁 horizontal split girder 由上下兩部分(或多部分)組成，用螺栓或焊接連接在一起共同工作的梁。 3.9 深梁 deep beam 高跨比大于1/6的簡支單跨梁。 3.10 鍋爐導向裝置 boiler guide 實現(xiàn)懸吊鍋爐“膨脹中心”的限位結構。 4 一般要求 4.1 鍋爐鋼結構支承鍋爐本體各部件，并維持它們之間的相對位置，承受風荷載、雪荷載和地震作用，承受電站設計單位提供并經(jīng)同意作用在鍋爐鋼結構上的荷載。除特殊要求外，鍋爐鋼結構不直接承受動力荷載。 4.2 進行鍋爐鋼結構設計時，應合理選擇結構方案、材料、連接方式和構造措施，滿足結構構件在運輸、安裝和使用過程中的強度﹑穩(wěn)定性和剛度要求。 4.3 鍋爐鋼結構采用以概率理論為基礎的極限狀態(tài)設計法，用分項系數(shù)設計表達式進行計算，按承載能力極限狀態(tài)和正常使用極限狀態(tài)設計。 4.4 承載能力極限狀態(tài)包括：構件或連接的強度破壞、脆性斷裂，因過度變形而不適用于繼續(xù)承載，結構或構件喪失穩(wěn)定，結構轉變?yōu)闄C動體系和結構傾覆；正常使用極限狀態(tài)包括：影響結構、構件或非結構構件正常使用或外觀的變形，影響正常使用的振動，影響正常使用或耐久性能的局部損壞。 4.5 按承載能力極限狀態(tài)設計鍋爐鋼結構時，應采用荷載(作用)效應的基本組合和偶然組合。按正常使用極限狀態(tài)設計鍋爐鋼結構時，應采用荷載(作用)效應的標準組合。 4.6 抗震設防烈度為6度及以上地區(qū)的鍋爐鋼結構，應進行抗震設計。本文件適用于抗震設防烈度為6度～9度地區(qū)鍋爐鋼結構的設計。抗震設防烈度大于9度時，應按專門規(guī)定執(zhí)行。 4.7 露天布置和緊身封閉的鍋爐鋼結構應進行抗風驗算。 4.8 構件應避免高溫(150℃以上)作用，長期受到高溫作用的構件，除選用合適的鋼材外，應采取隔熱或冷卻措施。 4.9 鍋爐鋼結構的溫度區(qū)段長度(伸縮縫的間距)，露天布置時不超過120m，緊身封閉時不超過150m，可不計入溫度應力和溫度變形的影響。 4.10 設于寒冷地區(qū)的鍋爐鋼結構，在設計時應采取措施提高結構的抗脆斷能力。 4.11 鍋爐鋼結構的節(jié)點無論采用何種連接形式，當節(jié)點視為剛性連接時，應符合受力過程中構件在節(jié)點處的交角不變的假定，同時連接應具有充分的強度承受交匯構件端部傳遞的所有最不利內力。當節(jié)點視為鉸接時，應使連接具有充分的轉動能力，但能有效的傳遞橫向剪力與軸心力。 4.12 鍋爐鋼結構的結構安全等級為二級，重要性系數(shù)(?0)取1.0。 4.13 鍋爐鋼結構設計時所需的自然環(huán)境條件有： a)基本風壓值； b)地面粗糙度類別； c)基本雪壓值； d)抗震設防烈度(設計基本地震加速度)； e)設計地震分組； f)場地類別； g)工作溫度。 4.14 按本文件設計的鍋爐鋼結構應按NB/T 47043制造和檢驗。