DB13(J)∕T 277-2018 建筑用鋼型材標準

DB河北省工程建設標準建筑用鋼型材標準河北省住房和城鄉(xiāng)建設廳發(fā)布 2術(shù)語和符號 2 2 23材料 4熱軋型鋼 5冷彎空心型鋼 23 23 276焊接空心型鋼 30 30 30 35附錄A計算截面特性的公式 44本標準用詞說明 46引用標準名錄 47附：條文說明 481GeneralProvisions 2TermsandSymbols 2 2 23Materials 3.2SteelDesignation 3.3AtmosphericCorrosionResi 4HotRolledSectionSteel 5ColdFormingHollowSectionalSteel 23 23 276WeldedHollowSectionalSteel 30 30 30 35AppendixAFormulaforCalculatingCross-sectionalExplanationofWordinginThisStandard 46ListofQuotedStandards 47Addition：ExplanationofProvisions 481.0.1為了促進河北省鋼結(jié)構(gòu)工業(yè)化、標準化發(fā)展，推進裝配式建筑的發(fā)展，積極推進我省鋼結(jié)構(gòu)建筑的現(xiàn)代化，提升鋼結(jié)構(gòu)技術(shù)集成配套，節(jié)約資源，保護環(huán)境，制定本標準。1.0.2本標準規(guī)定了建筑用鋼型材的材料要求、截面尺寸，以及訂貨、偏差控制等。本標準適用于建筑結(jié)構(gòu)用的熱軋型鋼、冷彎空心型鋼、焊接空心型鋼的工廠生產(chǎn)和設計選用。1.0.3建筑用鋼型材的工廠生產(chǎn)和設計選用除應符合本標準外，尚應符合國家和河北省現(xiàn)行有關(guān)標準的規(guī)定。22.1術(shù)語2.1.1建筑用鋼型材steelextrudateforbuildings在房屋建筑中使用的，通過軋制、冷彎、焊接等工藝制成的具有一定幾何形狀的鋼構(gòu)件。2.1.2熱軋型鋼hotrolledsectionsteel用加熱鋼坯軋成的各種幾何斷面形狀的鋼材，本標準中分為熱軋H型鋼和熱軋無縫鋼管。2.1.3冷彎空心型鋼coldforminghollowsectionalsteel用鋼板或鋼帶在連續(xù)輥式冷彎機組上生產(chǎn)成型，再焊接接縫而成的空心型鋼，本標準中分為圓形、矩形和方形等冷彎空心型鋼。2.1.4焊接空心型鋼theweldedhollowsectionalsteel用鋼板或鋼管焊接而成的空心型鋼，本標準中分為矩形（含方形）、日字形、田字形、L形、T形、十字形等空心型鋼。2.1.5耐候鋼atmosphericcorrosionresistingsteel通過添加少量的合金元素如Cu、P、Cr、Ni等，使其在金屬基體表面上形成保護層，以提高耐大氣腐蝕性能的鋼。2.2符號2.2.1熱軋型鋼的幾何參數(shù)H1——H型鋼截面高度；B1——H型鋼截面寬度；tw——H型鋼腹板厚度； tf——H型鋼翼緣厚度；r1——H型鋼圓角半徑；D1——熱軋無縫鋼管的外直徑；t1——熱軋無縫鋼管的壁厚。2.2.2冷彎空心型鋼的幾何參數(shù)H——冷彎矩形空心型鋼的長邊尺寸；B——冷彎矩形空心型鋼的短邊尺寸或冷彎方形空心型鋼的邊長；t——冷彎空心型鋼的壁厚；R——冷彎矩形、方形空心型鋼的外圓弧半徑；D——冷彎圓形空心型鋼的外直徑。2.2.3焊接空心型鋼的幾何參數(shù)H2——焊接矩形空心型鋼的長邊尺寸；B2——焊接矩形空心型鋼的短邊尺寸；t2——焊接矩形空心型鋼的壁厚；H3——焊接L形空心型鋼的單肢長度；B3——焊接L形空心型鋼的肢寬；t3——焊接L形空心型鋼的壁厚；4H4——焊接T形空心型鋼的腹板高；L4——焊接T形空心型鋼的翼緣長；B4——焊接T形空心型鋼的肢寬；t4——焊接T形空心型鋼的壁厚；H5——焊接日字形空心型鋼的長邊尺寸；B5——焊接日字形空心型鋼的短邊尺寸；t5——焊接日字形空心型鋼的外壁厚；t5n——焊接日字形空心型鋼的內(nèi)壁厚；B6——焊接田字形空心型鋼的邊長；t6——焊接田字形空心型鋼的外壁厚；t6n——焊接田字形空心型鋼的內(nèi)隔板壁厚；H7——焊接十字形空心型鋼的單向總長度；B7——焊接十字形空心型鋼的肢寬；t7——焊接十字形空心型鋼的壁厚。53.1一般規(guī)定3.1.1建筑用鋼型材的選用應遵循技術(shù)可靠、經(jīng)濟合理的原則，綜合考慮建筑結(jié)構(gòu)的重要性、荷載特征、結(jié)構(gòu)形式、應力狀態(tài)、連接方法、工作環(huán)境、鋼材厚度和價格等因素，選用合適的鋼材牌號和材性保證項目。設計文件中應完整地注明對鋼材的技術(shù)要求。3.1.2承重結(jié)構(gòu)所用的鋼材應具有屈服強度、抗拉強度、斷后伸長率和硫、磷含量的合格保證，對焊接結(jié)構(gòu)尚應具有碳當量的合格保證。焊接承重結(jié)構(gòu)以及重要的非焊接承重結(jié)構(gòu)采用的鋼材應具有冷彎試驗的合格保證；對直接承受動力荷載或需驗算疲勞的構(gòu)件所用鋼材尚應具有沖擊韌性的合格保證。3.1.3采用塑性設計的結(jié)構(gòu)及進行彎矩調(diào)幅的構(gòu)件，所采用的鋼材應符合下列規(guī)定：1屈強比不應大于0.85；2鋼材應有明顯的屈服臺階，且伸長率不應小于20%。3.1.4建筑用鋼型材宜采用Q235、Q345、Q355、Q390、Q420、Q460和Q345GJ鋼，其質(zhì)量除應符合本標準規(guī)定外，尚應符合現(xiàn)行國家標準《碳素結(jié)構(gòu)鋼》GB/T700、《低合金高強度結(jié)構(gòu)鋼》GB/T1591、《建筑結(jié)構(gòu)用鋼板》GB/T19879和《結(jié)構(gòu)用無縫鋼管》GB/T8162的規(guī)定。63.1.5處于外露環(huán)境，且對耐腐蝕有特殊要求或處于侵蝕性介質(zhì)環(huán)境中的承重結(jié)構(gòu)，可采用Q235NH、Q355NH和Q415NH牌號的耐候結(jié)構(gòu)鋼，其質(zhì)量應符合現(xiàn)行國家標準《耐候結(jié)構(gòu)鋼》GB/T4171的規(guī)定。3.1.6高層建筑的外露承重鋼結(jié)構(gòu)可選用Q235NH、Q355NH或Q415NH等牌號的焊接耐候鋼，其材質(zhì)和材料性能要求應符合現(xiàn)行國家標準《耐候結(jié)構(gòu)鋼》GB/T4171的規(guī)定，并宜附加要求保證晶粒度不小于7級，耐腐蝕指數(shù)不小于6.0。3.1.7焊接結(jié)構(gòu)所用鋼材尚應具有良好的焊接性能，其碳當量或焊接裂紋敏感性指數(shù)應符合設計要求或相關(guān)標準的規(guī)定。3.1.8建筑用鋼型材焊接材料的選用應符合下列規(guī)定：1焊條或焊絲的型號和性能應與相應母材的性能相適應，其熔敷金屬的力學性能應符合設計規(guī)定，且不應低于相應母材標準的下限值。2焊條的材質(zhì)和性能應符合現(xiàn)行國家標準《非合金鋼及細晶粒鋼焊條》GB/T5117、《熱強鋼焊條》GB/T5118的有關(guān)規(guī)定。對直接承受動力荷載或需要驗算疲勞的結(jié)構(gòu)，以及低溫環(huán)境下工作的厚板結(jié)構(gòu)，宜采用低氫型焊條。3焊絲的材質(zhì)和性能應符合現(xiàn)行國家標準《熔化焊用鋼絲》的有關(guān)規(guī)定。4埋弧焊用焊絲和焊劑的材質(zhì)和性能應符合現(xiàn)行國家標準《埋弧焊用碳鋼焊絲和焊劑》GB/T5293、《埋弧焊用低合金鋼焊絲和焊劑》GB/T12470的有關(guān)規(guī)定。3.1.9高層民用建筑中按抗震設計的框架梁、柱和抗側(cè)力支撐等主要抗側(cè)力構(gòu)件，其鋼材性能要求尚應符合下列規(guī)定：1鋼材抗拉性能應有明顯的屈服臺階，其斷后伸長率不應小于20%。2鋼材屈服強度波動范圍不應大于120N/mm2，鋼材實物的實測屈強比不應大于0.85。3抗震等級為三級及以上的高層民用建筑鋼結(jié)構(gòu)，其主要抗側(cè)力構(gòu)件所用鋼材應具有與其工作溫度相應的沖擊韌性合格保證。4偏心支撐框架中的消能梁段所用鋼材的屈服強度不應大于345N/mm2，屈強比不應大于0.8；且屈服強度波動范圍不應大于100N/mm2。3.1.10鋼材質(zhì)量等級的選用應符合下列規(guī)定：1A級鋼僅可用于結(jié)構(gòu)工作溫度高于0℃的不需要驗算疲勞的結(jié)構(gòu)，且Q235A鋼不宜用于焊接結(jié)構(gòu)。高層鋼結(jié)構(gòu)選用Q235A或Q235B級鋼時應選用鎮(zhèn)靜鋼。2需驗算疲勞的焊接結(jié)構(gòu)用鋼材應符合下列規(guī)定：1）當工作溫度高于0℃時其質(zhì)量等級不應低于B級；2）當工作溫度不高于0℃但高于﹣20℃時，Q235、Q345鋼不應低于C級，Q390、Q420及Q460鋼不應低于D級；3）當工作溫度不高于﹣20℃時，Q235、Q345鋼不應低于D級，Q390、Q420及Q460鋼應選用E級。83需驗算疲勞的非焊接結(jié)構(gòu)，其鋼材質(zhì)量等級要求可較上述焊接結(jié)構(gòu)降低一級但不應低于B級。但對吊車起重量不小于50t的中級工作制吊車梁，其質(zhì)量等級要求不能降低。4工作溫度不高于﹣20℃的受拉構(gòu)件及承重構(gòu)件的受拉板材的厚度或直徑小于40mm時，質(zhì)量等級不低于C級；當其厚度或直徑不小于40mm時，質(zhì)量等級不低于D級；重要承重結(jié)構(gòu)的受拉板材宜滿足現(xiàn)行國家標準《建筑結(jié)構(gòu)用鋼板》GB/T19879的要求。3.1.11建筑用鋼型材的壁厚允許偏差，當壁厚不大于10mm時不得超過公稱壁厚的±4%，當壁厚大于10mm時不得超過壁厚的±3%，彎角及焊縫區(qū)域壁厚除外。3.2鋼材化學成分和設計指標3.2.1Q235鋼的化學成分應符合表3.2.1的規(guī)定。牌號質(zhì)量等級化學成分（質(zhì)量分數(shù)）/%，≤CMnPSQ235A0.220.350.0450.050B0.200.350.0450.045C0.350.0400.040D0.350.0350.03593.2.2Q345鋼的化學成分應符合表3.2.2的規(guī)定。牌號質(zhì)量等級化學成分（質(zhì)量分數(shù)）/%，CMnPSNbVTiCrNiCuNMoBAls不大于不小于Q345A0.200.500.0350.0350.070.200.300.500.300.012--B0.200.0350.035-C0.200.0300.0300.015D0.0300.0250.015E0.0250.0200.0153.2.3Q355、Q390、Q420、Q460熱軋鋼的化學成分應符合表3.2.3-1的規(guī)定，其碳當量應符合表3.2.3-2的規(guī)定。牌號化學成分（質(zhì)量分數(shù)）/%鋼級質(zhì)量等級CaMnPSNbdVeTieCrNiCuNfMoB以下公稱厚度或直徑/mm不大于≤40b>40不大于Q355B0.240.500.0350.035---0.300.300.400.012--C0.200.220.0300.0300.012D0.200.220.0250.025-牌號化學成分（質(zhì)量分數(shù)）/%鋼級質(zhì)量等級CaMnPSNbdVeTieCrNiCuNfMoB以下公稱厚度或直徑/mm不大于≤40b>40不大于Q390B0.200.500.0350.0350.050.050.300.500.400.015-C0.0300.030D0.0250.025Q420cB0.200.500.0350.0350.050.050.300.800.400.0150.20-C0.0300.030Q460cC0.200.500.0300.0300.050.050.300.800.400.0150.200.004a公稱厚度大于100mm的型鋼，碳含量可由供需雙方協(xié)商確定。b公稱厚度大于30mm的鋼材，碳含量不大于0.22%。c僅適用于型鋼和棒材。dQ390、Q420最高可到0.07%，Q460最高可到0.11%。e最高可到0.20%。f如果鋼中酸溶鋁Als含量不小于0.015%或全鋁Alt含量不小于0.020%，或添加了其他固氮合金元素，氮元素含量不作限制，固氮元素應在質(zhì)量證明書中注明。牌號碳當量CEV（質(zhì)量分數(shù)）/%不大于鋼級質(zhì)量等級公稱厚度或直徑/mm≤30>30～63>63～150>150～250>250～400牌號碳當量CEV（質(zhì)量分數(shù)）/%不大于鋼級質(zhì)量等級公稱厚度或直徑/mm≤30>30～63>63～150>150～250>250～400Q355aB0.450.470.470.49-C-D0.49cQ390B0.450.470.48--CDQ420bB0.450.470.480.49-CQ460bC0.470.490.49--a當需對硅含量控制時（例如熱浸鍍鋅涂層），為達到抗拉強度要求而增加其他元素如碳和錳的含量，表中最大碳當量值的增加應符合下列規(guī)定：對于Si≤0.030%，碳當量可提高0.02%；對于Si≤0.25%，碳當量可提高0.01%。b只適用于型鋼和棒材。c只適用于質(zhì)量等級為D的鋼板。3.2.4鋼材的設計用強度指標，應根據(jù)鋼材牌號、厚度或直徑按表3.2.4采用。采用Q355鋼時，需滿足相應規(guī)范標準要求。鋼材牌號鋼材厚度或直徑（mm）強度設計值屈服強度 fy抗拉強度 fu抗彎f抗剪f端面承壓（刨平頂緊）fce碳素結(jié)構(gòu)鋼Q235≤16215320235370>16,≤40205225>40,≤100200215低合金高強度結(jié)構(gòu)鋼Q345≤16305400345470>16,≤40295335>40,≤63290325>63,≤80280315>80,≤100270305鋼材牌號鋼材厚度或直徑（mm）強度設計值屈服強度 fy抗拉強度 fu抗彎f抗剪f端面承壓（刨平頂緊）fce低合金高強度結(jié)構(gòu)鋼Q390≤16345200415390490>16,≤40330370>40,≤63310350>63,≤100295330Q420≤16375215440420520>16,≤40355205400>40,≤63320380>63,≤100305360Q460≤16410235470460550>16,≤40390225440>40,≤63355205420>63,≤100340400建筑結(jié)構(gòu)用鋼板Q345GJ>16,≤50325415345490>50,≤100300335注：1表中直徑指實芯棒材直徑，厚度系指計算點的鋼材或鋼管壁厚度，對軸心受拉和軸心受壓構(gòu)件系指截面中較厚板件的厚度；2冷彎型材和冷彎鋼管，其強度設計值應按國家現(xiàn)行有關(guān)標準的規(guī)定采用。3.2.5結(jié)構(gòu)用無縫鋼管的強度指標應按表3.2.5采用。表3.2.5結(jié)構(gòu)用無縫鋼管的強鋼管鋼材牌號壁厚（mm）強度設計值屈服強度fy抗拉強度fu抗拉、抗壓和抗彎f抗剪f端面承壓（刨平頂緊）fQ235≤16215320235375鋼管鋼材牌號壁厚（mm）強度設計值屈服強度fy抗拉強度fu抗拉、抗壓和抗彎f抗剪f端面承壓（刨平頂緊）fQ235>16,≤30205320225375>30215Q345≤16305400345470>16,≤30290325>30260295Q390≤16345200415390490>16,≤30330370>30310350Q420≤16375220445420520>16,≤30355205400>30340380Q460≤16410240470460550>16,≤30390225440>303552054203.2.6焊縫的強度指標應按表3.2.6采用并應符合下列規(guī)定：1手工焊用焊條、自動焊和半自動焊所采用的焊絲和焊劑，應保證其熔敷金屬的力學性能不低于母材的性能。2焊縫質(zhì)量等級應符合現(xiàn)行國家標準《鋼結(jié)構(gòu)焊接規(guī)范》GB50661的規(guī)定，其檢驗方法應符合現(xiàn)行國家標準《鋼結(jié)構(gòu)工程施工質(zhì)量驗收規(guī)范》GB50205的規(guī)定。其中厚度小于6mm鋼材的對接焊縫，不應采用超聲波探傷確定焊縫質(zhì)量等級。3對接焊縫在受壓區(qū)的抗彎強度設計值取fcw，在受拉區(qū)的抗彎強度設計值取ftw。4計算下列情況的連接時，表3.2.6規(guī)定的強度設計值應乘以相應的折減系數(shù)；幾種情況同時存在時，其折減系數(shù)應連乘：1）施工條件較差的高空安裝焊縫應乘以系數(shù)0.9；2）進行無墊板的單面施焊對接焊縫的連接計算應乘折減系數(shù)0.85。焊接方法和焊條型號構(gòu)件鋼材對接焊縫強度設計值角焊縫強度設計值對接焊縫抗拉強度f角焊縫抗拉、抗壓和抗剪強度 f牌號厚度或直徑（mm）抗壓f焊縫質(zhì)量為下列等級時，抗剪f抗拉、抗壓和抗剪f抗拉f二級三級自動焊、半自動焊和E43型焊條手工焊Q235≤16215215415240>16,≤40205205>40,≤100200200自動焊、半自動焊和焊條手工焊Q345≤16305305260200480(E50)540(E55)280(E50)315(E55)>16,≤40295295250>40,≤63290290245>63,≤80280280240>80,≤100270270230Q345GJ>16,≤35310310265>35,≤50290290245>50,≤100285285240Q390≤16345345295200200(E50)220(E55)>16,≤40330330280>40,≤63310310265>63,≤100295295250自動焊、半自動焊和焊條手工焊Q420≤16375375320215220(E55)240(E60)540(E55)590(E60)315(E55)340(E60)>16,≤40355355300205>40,≤63320320270>63,≤100305305260Q460≤16410410350235>16,≤40390390330225>40,≤63355355300205>63,≤100340340290注：表中厚度系指計算點的鋼材厚度，對軸心受拉和軸心受壓構(gòu)件系指截面中較厚板件的厚度。3.2.7鋼材的物理性能指標應按表3.2.7采用。彈性模量E（N/mm）剪變模量G（N/mm）線膨脹系數(shù)α（以每℃計）質(zhì)量密度P（kg/m）206×1079×1012×1078503.3耐候鋼3.3.1耐候鋼各牌號的分類見表3.3.1。類別牌號生產(chǎn)方式高耐候鋼Q295GNH、Q355GNH熱軋Q265GNH、Q310GNH冷軋焊接耐候鋼Q550NH熱軋3.3.2耐候鋼的化學成分應符合表3.3.2的規(guī)定。牌號化學成分（質(zhì)量分數(shù)）/%CMnPSCuCrNi其他元素Q265GNH0.10~0.400.20~0.500.07~0.12≤0.0200.20~0.450.30~0.650.25~0.50ea,bQ295GNH0.10~0.400.20~0.500.07~0.12≤0.0200.25~0.450.30~0.650.25~0.50ea,bQ310GNH0.25~0.750.20~0.500.07~0.12≤0.0200.20~0.500.30~1.25≤0.65a,bQ355GNH0.20~0.75≤1.000.07~0.15≤0.0200.25~0.550.30~1.25≤0.65a,bQ235NH≤0.13f0.10~0.400.20~0.60≤0.030≤0.0300.25~0.550.40~0.80≤0.65a,bQ295NH0.10~0.500.30~1.00≤0.030≤0.0300.25~0.550.40~0.80≤0.65a,bQ355NH≤0.500.50~1.50≤0.030≤0.0300.25~0.550.40~0.80≤0.65a,bQ415NH≤0.65≤0.025≤0.030d0.20~0.550.30~1.250.12~0.65ea,b,c牌號化學成分（質(zhì)量分數(shù)）/%CMnPSCuCrNi其他元素Q460NH≤0.65≤1.50≤0.025≤0.030d0.20~0.550.30~1.250.12~0.65ea,b,cQ500NH≤0.65≤2.0≤0.025≤0.030d0.20~0.550.30~1.250.12~0.65ea,b,cQ550NH≤0.65≤2.0≤0.025≤0.030d0.20~0.550.30~1.250.12~0.65ea,b,ca為了改善鋼的性能，可以添加一種或一種以上的微量合金元素：Nb0.015%~0.060%，V0.02%~0.12%，Ti0.02%~0.10%，Alt≥0.020%。若上述元素組合使用時，應至少保證其中一種元素含量達到上述化學成分的下限規(guī)定。b可以添加下列合金元素：Mo≤0.03%，Zr≤0.15%。cNb、V、Ti等三種合金元素的添加總量不應超過0.22%。d供需雙方協(xié)商，S的含量可以不大于0.008%。e供需雙方協(xié)商，Ni含量的下限可不做要求。f供需雙方協(xié)商，C的含量可以不大于0.15%。3.3.3耐候鋼材的力學性能和工藝性能應符合表3.3.3的規(guī)定。牌號拉伸試驗180o彎曲試驗彎心直徑下屈服強度ReL/(N/mm2)不小于抗拉強度Rm(N/mm2)斷后伸長率A/%不小于≤16>16,≤40>40,≤60>60≤16>16,≤40>40,≤60>60>6,≤16>16Q235NH235225215215360~51025252423tt2tQ295NH295285275255430~56024242322t2t3tQ295GNH295285 430~5602424 t2t3tQ355NH355345335325490~63022222120t2t3tQ355GNH355345——490~6302222——t2t3tQ415NH415405395—520~680222220—t2t3tQ460NH460450440 570~7302020 t2t3tQ500NH500490480 600~760 t2t3tQ550NH550540530 620~780 t2t3tQ265GNH265———≥41027———t——Q310GNH310———≥45026———a——注：本表中t為鋼材厚度；拉伸試驗時，當屈服現(xiàn)象不明顯時，可以采用RP0.2。3.3.4耐候鋼材的沖擊性能應符合表3.3.4的規(guī)定。質(zhì)量等級V型缺口沖擊試驗a試樣方向溫度/℃沖擊吸收能量KV2/JA縱向 B+20C0D—20E—40≥27ba沖擊試樣尺寸為10mm×10mm×55mm。b經(jīng)供需雙方協(xié)商，平均沖擊功值可以≥60焦。注：1經(jīng)供需雙方協(xié)商，高耐候鋼可以不作沖擊試驗。2沖擊試驗結(jié)果按三個試樣的平均值計算，允許其中一個試樣的沖擊吸收能量小于規(guī)定值，但不得低于規(guī)定值的70%。3厚度不小于6mm或直徑不小于12mm的鋼材應做沖擊試驗。對于厚度不小于6mm但小于12mm或直徑不小于12mm但小于16mm的鋼材做沖擊試驗時，應采用10mm×5mm×55mm或10mm×7.5mm×55mm小尺寸試樣，其試驗結(jié)果應不小于表3.3.4規(guī)定值的50%或75%。應盡可能取較大尺寸的沖擊試樣。4.1熱軋H型鋼4.1.1熱軋H型鋼的截面圖見圖4.1.1，部分常用的熱軋H型鋼截面尺寸、截面面積、理論重量及截面特性應符合表4.1.1的xxH1—截面高度B1—截面寬度tw—腹板厚度tf—翼緣厚度r1—圓角半徑tfttftftwr1yB1H1 xH1 x類別型號(mm×mm)截面尺寸(mm)截面面積(cm2)理論重量(kg/m)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)H1B1twtfr1IxIyWxWyHW125×1256.59830.0023.68392935.2846.9150×1507839.6431.116205636.393.7621675.17.551.4240.429009847.504.37331200×200200200863.5349.9472016008.615.02472250×250250250991.4371.81070036506.31860292300×300300300118.593.02020067507.551350450350×350350350171.939800136008.882280776400×4004004002122218.766600224003330HM200×15069829.926305078.303.6427167.6250×175244755.4943.660409844.21495300×200294200871.0555.816004.74756350×250340250999.5378.12120036506.051250292400×300390300133.33790072007.351940480類別型號(mm×mm)截面尺寸(mm)截面面積(cm2)理論重量(kg/m)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)H1B1twtfr1IxIyWxWyHM450×300440300153.95470081107.252490540500×300488300159.268900811020.82820540550×300550300166.089800811023.36.983270540600×30058830020187.2114000901024.76.933890601HN200×1002005.58826.6620.918108.222.2326.7250×12525069836.9629.039602942.8131747.0300×1503006.5946.7836.772105083.2948167.7350×175350762.9149.4135009843.95771400×150400870.3755.2186007343.2292997.8400×200400200883.3765.42350017404.56450×150450877.4960.8257008063.22450×200450200995.4374.93290018704.421460500×150504103.381.141900108020.13.231660500×200500200112.388.146800214020.44.361870214550×200550200117.392.058200214022.34.272120214600×200600200131.775600227024.02520227625×20063020020170.0101000269024.43.973220268700×30070030024231.51970001080029.26.835640721800×30080030026263.52072860001170033.06.667160781900×30090030028305.82404040001260036.46.4289908424.1.2訂貨內(nèi)容、分類代號、允許偏差、技術(shù)要求、試驗方法、檢驗規(guī)則、以及包裝、標志及質(zhì)量證明書等，均應按現(xiàn)行國家標準《熱軋H型鋼和剖分T型鋼》GB/T11263執(zhí)行。厚度允許偏差應按本標準第3.1.11條執(zhí)行。4.2熱軋無縫鋼管4.2.1熱軋無縫鋼管的截面圖見圖4.2.1，部分常用熱軋無縫鋼管的截面尺寸、允許偏差、截面面積、理論重量及截面特性應符合D1—外直徑t1—壁厚xyt1yD1x表4.2.1部分常用熱軋無縫鋼管外徑(mm)外徑允許偏差(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)彈性模數(shù)(cm3)塑性模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)單位長度表面積(m2)D1IiZSJC5.016.6521.21483.764.776967.52138.220.4406.019.8325.26568.034.742107.81162.308.026.04725.214.676103.60139.561450.42207.20219.1±2.20631.5340.1722827.5420827345644170.688841.653.129607.47270357591954051.665.735987.40328438719765761.378.142007.33383515840076670.890.247657.274355909531870273±2.75852.366.658529.37729562117008570.85864.982.671549.3152469214310104877.298.483969.2461581816792123089.4113.99580702940191601404325±3.25862.579.71001461680420028123277.7991228775699324573151292.614472891289431781外徑(mm)外徑允許偏差(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)彈性模數(shù)(cm3)塑性模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)單位長度表面積(m2)D1IiZSJC325±3.25107.41657110201355331422040121.91858710.951529371752288355.6±3.5585.216220912324501825101.719140107614173827921532195212351634439042470134.02466313871847493262774406.497.824480120515724895024092893714241867578742848135.53326016362157665203272154.0374491843244074898368620190.62434543222362989908644472457±4.63509015361998701803071131.74155618192377831133637152.94784520942748956894188174.02225395923613113107918472220215.5275656812874382213136257485084852019102480970403621146.857536226529531150724530170.6217663312611341713266252222477490929493874149818589820240.7307914283600476618285671996108484721.2278136001696945564234.429913178221.04321564726356386412029137116149020.9529569653229791059024346.844218997320.7622982463799461245830429.154723047620.5755710101460952151134.2.2訂貨內(nèi)容、允許偏差、技術(shù)要求、制造方法、交貨狀態(tài)、力學性能、工藝性能、試驗方法、檢驗規(guī)則、以及包裝、標志及質(zhì)量證明書等，均應按現(xiàn)行國家標準《結(jié)構(gòu)用無縫鋼管》GB/T8162、《無縫鋼管尺寸、外形、重量及允許偏差》GB/T17395執(zhí)行。厚度允許偏差應按本標準第3.1.11條執(zhí)行。5.1冷彎矩形、方形空心型鋼5.1.1冷彎矩形空心型鋼的截面見圖5.1.1，部分常用的冷彎矩形空心型鋼截面尺寸、允許偏差、截面面積、理論重量及截面特性xxH—長邊尺寸B—短邊尺寸t—壁厚（各邊均同）R—外圓弧半徑HxtyHxtRyB表5.1.1部分常用冷彎矩形空心邊長(mm)邊長允許偏差 (mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)HBtIxIyWxWyItCt2004.024.513536187.435.0213455.023.830.416497507.374.9716522106.028.336.019298747.324.9319472458.036.546.4238610794.8223925073082004.021.226.9158410217.6719422195.026.233.4193512457.6223912676.031.139.6226814577.566.0622728263128.040.251.2289218157.435.9528324236643962204.021.827.718929488.265.8419872245.027.034.423138.215.8021024472746.032.140.8271413525.7524728913218.041.552.8338916858.015.653082413746407邊長(mm)邊長允許偏差 (mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)HBtIxIyWxWyItCt2504.024.330.9269712349.346.3221626652755.030.138.4330415089.286.2726420132853376.035.845.6388617689.236.2331123638863968.046.559.2488622199.0839129650505042605.033.242.4412123509.867.4531726146954266.039.650.4485627639.817.4037430755665018.051.565.6614534939.687.29473388726764263.280.6736341749.567.205666468850772300200±2.005.038.048.4624133618.3441633668365526.045.257.6737039628.2949139681156518.059.175.2938950426265041062783872.792.61131360588.09754606129871012350250±2.205.045.858.4105206306601504122348176.054.769.6124577458712594145549678.071.691.216001957391476619136125388.41940711588927235001522400200±2.405.045.858.41249043118.60624431105197426.054.769.61478950928.55739509120698778.071.691.21897465178.459496521582088.42300378648.367861936813732624889778.241312898227821591400250±2.605.049.763.4144407056722565147739376.059.475.6171188352856668175808.077.999.2220481074486023127144096.226806130291340104228423175330766149261538335972042450250±2.806.064.181.622724924510107402068712538.084.22933611916130495327222162835737144701588334731983411371666318281333395912314500300±3.206.073.593.63301215151132110103242016888.096.7428051962417121308427672202523282393320931596527362693606042772624241848625813156550350±3.608.0597833004020.721741717635012856732763675220.626652100779013503204852494276920.431002444926464118236972694873120.3353727841067604710600400±4.008.0806704356422.826892178886723591990815342922.73303267210972044132281156706239122.53856312013068052012072641323107128222.44410356415085059622352991482107976022.34940398817051066945.1.2冷彎方形空心型鋼的截面見圖5.1.2，部分常用冷彎方形空心型鋼的截面尺寸、允許偏差、截面面積、理論重量及截面特性應符合表5.1.2的規(guī)定。xB—邊長t—壁厚（各邊均同）R—外圓弧半徑BxtyBxtRyB表5.1.2部分常用冷彎方形空心邊長(mm)邊長允許偏差 (mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)BtIx=IyItCt250±2.005.038.048.448059.9738474435776.045.257.656729.9245488436818.059.175.272299.8057887872.792.687079.7069714197106284.898599.55789166911226280±2.205.042.754.46810486105137306.050.964.88054575125048638.066.684.8103177371643682.1104.61247989120173135696.1122.5142321017238041574300±2.406.054.769.69964664154349978.071.691.21280185320312129388.415519103524966157217767295141829350±2.806.064.181.6160089152468313728.084.220618325571787251891439401272182290541660475982552邊長(mm)邊長允許偏差 (mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)BtIx=IyItCt400±3.208.096.731269156448934236238216604312892443192216718433395208504142521827353877450±3.608.044966199970043301655100244986629370220464164285110351043572367321032541190004989500±4.008.06217220.024879648337507634130541194704612228891873568142420544020726410201040801645306241235299114260457018614070135.1.3冷彎矩形、方形空心型鋼的彎角外圓弧半徑R(或C1、C2)值應符合表5.1.3的規(guī)定。R(或C1、C2)值的測量方法按圖5.1.3進行。厚度t（mm）碳素鋼（ReL≤320MPa）低合金鋼（ReL＞320MPa）t≤3(1.0～2.5)t(1.5～2.5)t3＜t≤6(1.5～2.5)t(2.0～3.0)t6＜t≤10(2.0～3.0)t(2.0～3.5)tt＞10(2.0～3.5)t(2.5～4.0)t注：ReL值指標準中規(guī)定的最低值，即下屈服強度。 RC2tC2tC15.1.4訂貨內(nèi)容、允許偏差、長度、外形、技術(shù)要求等，均應按現(xiàn)行國家標準《結(jié)構(gòu)用冷彎空心型鋼》GB/T6728執(zhí)行。厚度允許偏差應按本標準第3.1.11條執(zhí)行。5.2冷彎圓形空心型鋼5.2.1冷彎圓形空心型鋼的截面見圖5.2.1，部分常用冷彎圓形空心型鋼的截面尺寸、允許偏差、截面面積、理論重量及截面特性應符合表5.2.1的規(guī)定。xD—外徑t—壁厚ytyDx外徑(mm)外徑允許偏差(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)彈性模數(shù)(cm3)塑性模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)單位長度表面積(m2/m)DtIiZSJC4.013.4217.09395.474.81056.5074.01790.94112.990.4405.016.6521.21483.764.776967.52138.220.4406.019.8325.26568.034.742107.81162.300.440415.8820.23655.945.6979.51103.711311.89159.020.518519.73805.045.6697.58128.041610.070.518623.5329.97948.475.63114.97151.761896.93229.930.518830.9739.461218.925.56147.75197.362437.84295.500.518外徑(mm)外徑允許偏差(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)彈性模數(shù)(cm3)塑性模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)單位長度表面積(m2/m)DtIiZSJC219.1±2.20526.433.619287.5722938563520.688631.5340.1722827.5420827345644170.688841.653.129607.4727035759195400.68851.665.735987.4032843871976570.688273±2.75533.042.137819.4827735975625540.858639.550.344879.4432942889746570.858852.366.658529.37429562117008570.85864.982.671549.315246921431010480.858325±3.25539.550.3643639651212871792647.260.1765147161115303942862.579.71001461680420028123277.7991228775699324573151292.614472891289431781355.6±3.55651.765.91007156673320141868.687.41320074296726400148585.216220912324501825101.71914010761417382792153406.4878.619870978127039750195697.82448012051572489502409116.72893714241867578742848457±4.60888.628450124516135689024903509015361998701803071131.74155618192377831133637508898.639280154620007856030934852019102480970403621146.857536226529531150724530外徑(mm)外徑允許偏差(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)彈性模數(shù)(cm3)塑性模數(shù)(cm3)扭轉(zhuǎn)慣量(cm4)扭轉(zhuǎn)模數(shù)(cm3)單位長度表面積(m2/m)DtIiZSJC6108118.86855221.32248289913710344958484721.2278136001696945564184.223510475521.1343544632095106869234.429913178221.04321564726356386415.2.2訂貨內(nèi)容、允許偏差、長度、外形、技術(shù)要求等，均應按現(xiàn)行國家標準《結(jié)構(gòu)用冷彎空心型鋼》GB/T6728執(zhí)行。厚度允許偏差應按本標準第3.1.11條執(zhí)行。6.1分類代號6.1.1焊接空心型鋼按外形形狀分為矩形、異形空心型鋼。6.1.2焊接空心型鋼的代號：1焊接矩形空心型鋼（含方形焊接空心型鋼），代號：口；2焊接異形空心型鋼，代號：T、L、日、田、十；其中：“T”表示T形，“L”表示L形，“日”表示日字形，“田”表示田字形，“十”表示十字形。6.2焊接矩形空心型鋼6.2.1焊接矩形空心型鋼的截面見圖6.2.1，部分常用焊接矩形空心型鋼的截面尺寸、允許偏差、截面面積、理論重量及截面特性應符合表6.2.1的規(guī)定。H2—長邊尺寸B2—短邊尺寸t2—壁厚（各邊均同）H2yH2yxxyB2尺寸(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)尺寸允許偏差 (mm)H2B2IxIyWxWy200631.8440.56235915087.63236201841.9553.44304419367.556.0230425851.8166.00368223297.475.94368311633.7242.96258520097.766.84258236844.4656.64333925887.686.7633430454.9570.00404331267.606.68404368200636.5546.56292329237.927.92292292848.2361.44378137817.857.8537837859.6676.00458545857.777.77459459250636.5546.56402818199.306.25322243848.2361.44522423399.2241831259.6676.00635028206.0950837670.8490.24741132649.066.01593435638.4348.96438524139.467.02351284850.7464.64569231149.386.9445536662.8080.00692737679.316.8655444374.6195.04809143749.236.78647515200641.2652.56492134889.68394349854.5169.44639545199.608.0751245267.5186.00779154899.527.9962354980.26102.24911263999.447.91729640250645.9758.56581458149.969.96465465860.7977.44756775679.899.8960560575.3696.00923292329.819.8173973989.68114.249.739.73865865103.759.659.65985985117.56149.769.589.58300854.569.4274310.856.2954536667.586.09969331110.776.2166544180.3102.2383710.6977851292.8118.213291432210.616.05886576105.0133.8476810.535.97988636857.072.636397.0859042870.790.0440810.967.0072151984.0107.010.886.9284560397.2123.814437579210.806.84962681140.2641310.726.76754200860.877.4987752578.2465852675.496.0639280563989.7114.274618.08944746103.7132.284668.00847149.8941010.987.93941尺寸(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)尺寸允許偏差 (mm)H2B2IxIyWxWy300250867.185.411583873977269983.2106.0141751067310.0394585499.1126.216654125139.961001146.219021142639.881268165.821281159259.8014191274300873.493.4132881328888688691.1116.0162791627910851085108.5138.2191431914312761276125.7160.2218862188614591459142.7181.824511245111634163435075.496.014662380212.366.2983850789.7114.217215440912.286.21984588103.7132.2196514971663149.82197254906.05125673278.5100.015818504812.5890459493.4119.018587587512.507.031062691137.821233664612.416.951213782122.6156.223759736512.336.87135886620083.2106.017553729512.878.30100373099.1126.220644852312.798.22852146.223605967912.711349968165.8264381076812.638.06107725091.1116.0204441211413.2810.22969108.5138.2240731421413.201376125.7160.2275581621410.0615751297142.7181.8309041811813.049.981766144930098.9126.0233351838213.6112.0813331225150.2275022163313.5312.0015721442136.7174.2315122475213.4518011650155.2197.8353692774113.3720211849350106.8136.0262252622513.8913.8914991499127.4162.2309313093113.8113.8117671767147.7188.2354663546613.7313.7320272027167.8213.8398353983513.6513.6522762276187.6239.0440424404213.5713.572517251720207.2264.0480924809213.5013.502748274840083.2106.020555429313.936.36102857299.1126.224185498213.846.281209664146.227663562113.766.201383749165.830995621113.671550828尺寸(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)尺寸允許偏差 (mm)H2B2IxIyWxWy40086.4220775689669102.9131.025992662514.081300779151.829750750014.007.031488882172.233355831713.926.95166897820091.124359819914.498.411218820108.5138.228703958414.418.331435958125.7160.2328801089214.338.2516441089142.7181.8368961212614.2518451213300106.8136.0319652048515.3312.2715981366127.4162.2377382412315.2518871608147.7188.2433152761721661841167.8213.8487003097015.0912.0424352065400122.5156.0395723957215.9315.9319791979146.2186.2467744677415.8515.8523392339169.7216.2537495374915.7715.7726872687192.9245.8605036050315.6915.6930253025215.9275.0670406704015.6115.613352335220238.6304.0733657336515.5315.5336683668450108.5138.232732555515.396.341455741125.7160.237502627115.306.261667836142.7181.842089693315.221871924159.4203.04649675452066100620175.8224.050729810915.056.0222551081143.035035737615.651557868165.840165835515.571785983147.7188.245104926915.487.0220051091165.0210.2498571012315.406.94221620232.0544291091715.326.8624191284200150.2384891064616.018.421065136.7174.2441581210615.928.341963155.2197.8496271348315.848.2622061348173.5221.0548991478215.762440147820191.5244.0599801600515.6826661601300136.8174.2500022661316.9412.3622221774158.7202.2574693048216.8612.2825542032180.4229.8647023420016.7812.2028762280201.8257.0717053777116.703187251820222.9284.0784844119916.6212.0434882747450165.0210.2672736727317.8917.8929902990191.7244.2774367743617.8117.8134423442218.0277.8873158731517.7317.7338813881244.2311.0969149691417.6517.654307430720270.0344.010623910623917.5717.5747224722尺寸(mm)壁厚(mm)理論重量(kg/m)截面面積(cm2)慣性矩(cm4)慣性半徑(cm)截面模數(shù)(cm3)尺寸允許偏差 (mm)H2B2IxIyWxWy500200127.4162.25015317.588.502006147.7188.2576131331917.508.4123051332167.8213.8648291484117.418.3325931484187.6239.0718071627817.338.252872162820207.2264.0785521763217.2531421763250136.8174.2572991931610.5322921545158.7202.2658822206918.0510.4526351766180.4229.8742022469917.9710.3729681976201.8257.0822662721017.8910.293291217720222.9284.0900792960417.8110.2136032368300146.2186.2644452910318.6012.5025781940169.7216.2741513334718.5212.4229662223192.9245.8835763743018.4412.3433432495215.9275.0927264135418.3612.263709275720238.6304.01016054512518.2840643008400165.0210.2787365580919.3516.2931492790191.7244.2906896418319.2716.2136283209218.0277.81023237230640933615244.2311.01136458018316.064546400920270.0344.01246598781919.0315.9849864391500183.9234.2930289302819.9319.9337213721213.6272.210722710722719.8519.8542894289243.2309.812107112107119.7719.7748434843272.4347.013456413456419.6919.695383538320301.4384.014771214771219.6119.615908590824358.7457.017299917299919.4619.4669206920600400243.2309.81580328410922.5916.4852684205272.4347.01758019332622.5116.405861466620301.4384.019315210227222.4316.326438511424358.7457.022662311937522.2775545969500268.3341.818532313981823.2920.2361775593300.7383.020629615548223.216877621920332.8424.022680517076520.077560683124396.4505.026645920021122.9719.9188828008600293.4373.821261521261523.8523.8570877087328.9419.023679123679123.7723.777893789320364.2464.026045926045923.6923.698682868224434.1553.030629630629623.5423.5410210102106.2.2焊接矩形空心型鋼的訂貨內(nèi)容、允許偏差、長度、外形、技術(shù)要求等，可參照《結(jié)構(gòu)用冷彎空心型鋼》GB/T6728的規(guī)定。厚度允許偏差應按本標準第3.1.11條執(zhí)行。6.3焊接異形空心型鋼6.3.1焊接異形空心型鋼分為L形、T形、日字形、田字形、十字形，截面圖見圖6.3.1-1~6.3.1-5。部分常用的焊接異型空心型鋼的截面尺寸、允許偏差、截面面積、理論重量及截面特性等應符合表6.3.1-1~6.3.1-5的規(guī)定。H3—單肢長度B3—肢寬t3—壁厚y0—質(zhì)心距離H3vuyy0vuyBB3H3xH3xy0y0vuyB3vuH4—腹板高L4—翼緣長B4—肢寬t4—壁厚y01—質(zhì)心距離yL4/2L4/2L4/2B4xxB4H4y01H4y01yB4/2B4/2yH5—長邊尺寸B5—短邊尺寸t5—外壁厚t5n—內(nèi)壁厚yxxxyB5B6—邊長t6—外壁厚t6n—內(nèi)隔板壁厚t6nt6nt6B6B66yB6H5t5nH5t5nH7—單向總長B7—肢寬B7t—B7t=(H7-B7)/2t7—壁厚B7tBB7t