鋼筋計算截面面積及理論重量

鋼筋計算截面面面積及理論重重量公稱直徑/mm不同根數(shù)鋼筋的的計算截面積積/mm2單根鋼筋理論重量/(kg//m)123456789628.357851131421701982262550.2226.533.2661001331661992322652990.260850.31011512012523023524024530.3958.252.81061582112643173704234750.4321078.51572363143934715506287070.61712113.122633945256567879190410170.88814153.93084616157699231077123113851.2116201.1402603804100512061407160818091.5818254.55097631017127215271781203622902.0020314.26289421256157018842199251328272.4722380.176011401520190022812661304134212.9825490.998214731964245429453436392744183.8528615.8123218472463307936954310492655424.8332804.2160924133217402148265630643472386.31361017.9203630544072508961077125814391617.99401256.625133770502762837540879610053113109.8750196439285892785698201178413748157121767615.42注：表中直徑dd=8.2mmm的計算截面面面積及理論論重量僅適用用于有縱肋的的熱處理鋼筋筋?？v向受力鋼筋的的混凝土保護護層最小厚度度（mm）（《混凝土結構構設計規(guī)范》GB500010-20002）環(huán)境類別板、墻、殼梁柱≤C20C25~C455≥C50≤C20C25~C455≥C50≤C20C25~C455≥C50一201515302525303030二a-2020-3030-3030b-2520-3530-3530三-3025-4035-4035注：①基礎中的的縱向受力鋼鋼筋的混凝土土保護層厚度度不應小于40mm；當午墊層層時不應小于于70mm；②處于一類環(huán)境境且由工廠生生產的預制構構件，當混凝凝土強度等級級不低于C20時，其保護護層厚度可按按本規(guī)定減少少5mm，但預應力力鋼筋的保護護層厚度不應應小于15mm；處于二類類環(huán)境且由工工廠生產的預預制構件，當當表面采取有有效保護措施施時，保護層層厚度可按本本表中的一類類環(huán)境值取用用；③預制鋼筋混凝凝土受彎構件件鋼筋端頭的的保護層厚度度不用小于10mm；預制肋形形板主肋鋼筋筋的保護層厚厚度應按梁的的數(shù)值取用。每米板寬各種鋼鋼筋間距時的的鋼筋截面面面積（房建結結構）鋼筋間距/mmm當鋼筋直徑/mmm為下列數(shù)值值時的鋼筋截截面面積/mm234566/888/101010/121212/141414/161670758085909510010194.388.483.278.574.570.6179167157148140132126281262245231218207196404377354333314298283561514491462437414393719671629592559529503920859805758716678644112110479819248728267851369127711981127106410089581616150814141331125711901131190817801669157114841405133521992053192418111710162015392536236722182088197218681775287226812513236522342116201111012012513014064.258.956.554.450.511410510096.689.71781631571511402572362262182023573273143022814574194023873595855375154954607146546286045618717987667376841028942905870808121411121068102795413991283123211841100161414801420136612681828167616081547143615016017018019020047.144.141.539.237.232.383.878.573.969.866.162.813112311510910398.2189177166157149141262246231218207196335314296279256251429403379358339322523491462436413393639599564532504479754707665628595565890834786742702668102696290685581077011831110104498593488813401257118311171058100522024025026028030032032.129.428.327.225.223.622.157.152.450.248.344.941.939.289.381.978.575.570.166.561.41291181131091019488178164157151140131123228209201193180168157292268258248230215201357327315302281262245436399383368342320299514471453435404377353607556534514477445417700641616592550513481807740710682634592554914838834773718670628注：表中鋼筋直直徑中的6/8，8/10等系指兩種種直徑的鋼筋筋間隔放置。鋼筋排成一行時時梁的最小寬寬度（房建結結構）鋼筋直徑/mmm3根4根5根6根7根12180/1500200/1800250/220014180/1500200/1800250/2200300/300016180/1800220/2000300/2500350/3000400/350018180/1800250/2200300/3000350/3000400/350020200/1800250/2200300/3000350/3500400/400022200/1800250/2500350/3000400/3500450/400025220/2000300/2500350/3000450/3500500/400028250/2200350/3000400/3500450/4000550/450032300/2500350/3000450/4000550/4500注：斜線以左數(shù)數(shù)值用于梁的的上部，以右右數(shù)值用于梁梁的下部。混凝土強度設計計值和強度標標準值（N/mm2）（《混凝土結構構設計規(guī)范》GB500010-20002）強度種類符號混凝土強度等級級C15C20C25C30C35C40C45C50C55C60C65C70C75C80強度標準值10.013.416.720.123.426.829.632.435.538.541.544.547.450.21.271.541.782.012.202.392.512.642.742.852.932.993.053.11強度設計值7.29.611.914.316.719.121.123.125.327.529.731.833.835.90.911.101.271.431.571.711.801.892.042.142.092.142.182.22注：（1）計算算現(xiàn)澆鋼筋混混凝土軸心受受壓及偏心受受壓構件時，如如截面的長邊邊或直徑小于于300mm，則表中混混凝土的強度度設計值應乘乘以系數(shù)0.8，當構件質質量（如混凝凝土成型、截截面軸線尺寸寸等）確有保保證時，可不不受此限制。（2）離心混凝凝土的結構強強度設計值應應按專門標準準取用?；炷翉椥阅Ａ苛科谧冃文ＤＡ浚ǎā痘炷两Y構構設計規(guī)范》GB500010-20002）模量種類混凝土強度等級級C15C20C25C30C35C40C45C50C55C60C65C70C75C802.202.552.803.003.153.253.353.453.553.603.653.703.753.80——1.11.21.31.41.51.551.61.651.71.751.81.851.9普通鋼筋強度設設計值（）（《混凝土結構構設計規(guī)范》GB500010-20002）種類符號熱軋鋼筋HPB235（Q253）210210HRB335((20MnSSi)300300HRB(20MMnSiv、20MnSSiNb、20MnTTi)360360RRB400((K20MnnSi)360360注：在鋼筋混凝凝土結構中，軸軸心受