【鋼筋】計算截面面積及理論重量

1、6/6鋼筋計算截面面積及理論重量公稱直徑/mm不同根數(shù)鋼筋的計算截面積/mm單根鋼筋理論重量/(kg/m)123456789628.357851131421701982262550.2226.533.2661001331661992322652990.260850.31011512012523023524024530.3958.252.81061582112643173704234750.4321078.51572363143934715506287070.61712113.122633945256567879190410170.88814153.93084616157699231077123

2、113851.2116201.1402603804100512061407160818091.5818254.55097631017127215271781203622902.0020314.26289421256157018842199251328272.4722380.176011401520190022812661304134212.9825490.998214731964245429453436392744183.8528615.8123218472463307936954310492655424.8332804.2160924133217402148265630643472386.3

3、1361017.9203630544072508961077125814391617.99401256.625133770502762837540879610053113109.8750196439285892785698201178413748157121767615.42注：表中直徑d=8.2mm的計算截面面積及理論重量僅適用于有縱肋的熱處理鋼筋。每米板寬各種鋼筋間距時的鋼筋截面面積（房建結構）鋼筋間距/mm當鋼筋直徑/mm為下列數(shù)值時的鋼筋截面面積/mm34566/888/101010/121212/141414/161670758085909510010194.388.483.278.

4、574.570.6179167157148140132126281262245231218207196404377354333314298283561514491462437414393719671629592559529503920859805758716678644112110479819248728267851369127711981127106410089581616150814141331125711901131190817801669157114841405133521992053192418111710162015392536236722182088197218681775287

5、226812513236522342116201111012012513014064.258.956.554.450.511410510096.689.71781631571511402572362262182023573273143022814574194023873595855375154954607146546286045618717987667376841028942905870808121411121068102795413991283123211841100161414801420136612681828167616081547143615016017018019020047.14

6、4.141.539.237.232.383.878.573.969.866.162.813112311510910398.2189177166157149141262246231218207196335314296279256251429403379358339322523491462436413393639599564532504479754707665628595565890834786742702668102696290685581077011831110104498593488813401257118311171058100522024025026028030032032.129.42

7、8.327.225.223.622.157.152.450.248.344.941.939.289.381.978.575.570.166.561.4129118113109101948817816415715114013112322820920119318016815729226825824823021520135732731530228126224543639938336834232029951447145343540437735360755653451447744541770064161659255051348180774071068263459255491483883477371867

8、0628注：表中鋼筋直徑中的6/8，8/10等系指兩種直徑的鋼筋間隔放置。鋼筋排成一行時梁的最小寬度（房建結構）鋼筋直徑/mm3根4根5根6根7根12180/150200/180250/22014180/150200/180250/220300/30016180/180220/200300/250350/300400/35018180/180250/220300/300350/300400/35020200/180250/220300/300350/350400/40022200/180250/250350/300400/350450/40025220/200300/250350/300450

9、/350500/40028250/220350/300400/350450/400550/45032300/250350/300450/400550/450注：斜線以左數(shù)值用于梁的上部，以右數(shù)值用于梁的下部?；炷翉姸仍O計值和強度標準值（N/mm）（混凝土結構設計規(guī)范GB50010-2002）強度種類符號混凝土強度等級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

10、.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）計算現(xiàn)澆鋼筋混凝土軸心受壓及偏心受壓構件時，如截面的長邊或直徑小于300mm，則表中混凝土的強度設計值應乘以系數(shù)0.8，當構件質(zhì)量（如混凝土成型、截面軸線尺寸等）確有保證時，可不受此限制。（2）離心混凝土的結構強度設計值應按專門標準取用?；炷翉椥阅Ａ科谧冃文Ａ浚ǎɑ炷两Y構設計規(guī)范GB50010-2002）模量種類

11、混凝土強度等級C15C20C25C30C35C40C45C50C55C60C65C70C75C802.202.552.803.003.153.253.353.453.553.603.653.703.753.801.11.21.31.41.51.551.61.651.71.751.81.851.9普通鋼筋強度設計值（）（混凝土結構設計規(guī)范GB50010-2002）種 類符號熱軋鋼筋HPB235（Q253）210210HRB335(20MnSi)300300HRB(20MnSiv、20MnSiNb、20MnTi)360360RRB400(K20MnSi)360360注：在鋼筋混凝土結構中，軸心受拉和小偏心受拉