钢筋的计算截面面积及公称质量表

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1、钢筋的计算截面面积及公称质量表净保护层厚度（mm):25303540梁纵向钢筋单排最大根数（净保护层厚度:25mm)直径d（mm）不同根数直径的计算截面面积（rmm2)单根钢筋公称质量（kg/m）12345678937.114.121.228.335.342.449.556.563.60.0555412.625.137.750.362.875.488.0100.5113.10.0986519.6395979981181371571770.154628.357851131411701982262540.2226.533.2661001331661992322652990.260850.31011

2、512012513023524024520.3958.252.81061582112643173704224750.4151078.51572363143934715506287070.61712113.122633945256567979290510180.88814153.93084626167709241078123213851.20816201.1402603804100512061407160818101.57818254.55097631018127215271781203622901.99820314.26289421257157118852199251328272.466223

3、80.176011401521190122812661304134212.98425490.998214731963245429453436392744183.85328615.8123218472463307936954310492655424.83432804.2160824133217402148255630643472386.313361017.9203630544072508961077125814391617.990401256.625133770502762837540879610053113109.865（mm）141618202225283236401502/32/32222

4、1/211120043/43/43332/3221/2250554/54/543/432/3223006/765/65/654/543/432/33507/876/76/765/64/543/434008/98/97/87/86/76/75/64/54/53/4钢筋直径（mm）梁宽b4509/109/108/98/97/97/86/75/64/54/550010/1210/1110/119/108/107/96/86/75/64/555012/1311/1211/1210/119/118/107/96/85/75/660013/1412/1412/1311/1210/129/118/107/8

5、6/75/7梁宽b14161820222528323640注：表内分数值，其分子为梁上部纵筋单排最大根数，分母为梁下部钢筋单排最大根数。梁纵向钢筋单排最大根数（净保护层厚度：30mm）梁宽b钢筋直径（mm）（mm）141618202225283236401502222221/21112003/433332/32/3221/225054/54/5443/432/32230065/65/654/54/543/432/33507/86/76/76/75/65/64/543/434008/987/87/86/76/75/64/54/53/44509/109/108/98/97/86/86/75/64/

6、54/550010/1110/119/109/108/97/96/86/75/64/555011/1211/1210/1110/119/108/107/96/85/75/660012/1412/1311/1311/1210/129/118/107/86/75/7梁宽b14161820222528323640梁纵向钢筋单排最大根数（净保护层厚度35mm）梁宽b（mm）钢筋直径（mm）14161820222528323640150222221/2111120033332/32/32221/22504/54/5443/43/432/3223005/65/6554/54/53/43/432/33507

7、/76/76/765/65/64/543/434008/97/87/876/75/75/64/54/53/44509/108/98/98/97/86/86/75/64/54/550010/1110/119/109/108/97/96/85/75/64/555011/1211/1210/1110/119/108/107/96/85/75/660012/1412/1311/1211/1210/119/118/97/86/75/7梁宽b14161820222528323640梁纵向钢筋单排最大根数（净保护层厚度40mm）梁宽b钢筋直径(mm)(mm)1416182022252832364015022

8、221/21111120033332/32221/21/22504/54443/4332/3223005/65554/543/4332/33506/76/7665/64/54/53/43/434007/87/87/876/75/65/64/543/44508/108/98/987/86/75/75/64/54/550010/119/109/1098/97/86/85/75/64/555011/1210/1210/1110/119/108/97/86/75/75/660012/1311/1311/1211/1210/118/108/97/86/75/7梁宽b1416182022252832364

9、0净保护层厚度（mm）:30354050柱纵向钢筋单排最大根数（净保护层厚度：30mm）柱宽b(mm)钢筋直径（mm）1416182022252832364025033333332223004444433333350555444443340065555554444506666655544500777766655555088777766656009888877766650109998887767001010109998877750111110101099888800121111111010109988501312121211111010999001313131212111110109柱宽b141

10、61820222528323640柱纵向钢筋单排最大根数（净保护层厚度：35mm）柱宽b（mm）钢筋直径（mm）141618202225283236402503333332222300444433333335055444444334005555554444450666655554450077766665555508877776665600988887776665099998887767001010109998877750111110101099888800121111111010109988501212121111111010999001313121212111110109柱宽b1416182

11、0222528323640柱纵向钢筋单排最大根数（净保护层厚度40mm）柱宽b钢筋直径（mm）(mm)1416182022252832364025033333222223004433333333350544444433340055555444444506666555544500776666655555087777666656008888777666650999888777670010109998887775011101010109988880012111111101099888501212121111101010999001313121212111110109柱宽b14161820222528

12、323640柱纵向钢筋单排最大根数（净保护层厚度50mm)柱宽b钢筋直径（mm）(mm)141618202225283236402503322222222300333333332235044444433334005555444443450665555544450076666655555507777666655600888777766665099888877667001099998877775010101010998887800111111101010998885012121111111010998900131212121111101099柱宽b14161820222528323640每米板宽内

13、的钢筋截面面积表钢筋间距当钢筋直径（mm）为下列数值时的钢筋截面面积（mm2）（mm）44.55681012141618202225701802272804047181122161621992872363544885430701275168212262377670104715082053268133934189506865458015719924535362898214141924251331813927475261369014017721831455987312571710223428273491422454541001261591962835037851131153920112545314

14、238014909110114145178257457714102813991828231328563456446212010513316423641965494212831676212126183168409112510112715722640262890512321608203625133041392713097122151217387604870118415471957241729243776140901141402023595618081100143618182244271535061508410613118833552475410261340169620942534327216079

15、991231773144917079621257159019632376306817074941151662964626659061183149718482236288717572911121622874496468801149145417952172280518070881091572794366288551117141417452112272719066841031492654135958101058133916532001258420063809814125139256577010051272157119012454250506479113201314452616804101812571

16、521196330042536594168262377513670848104712671636钢筋间距44.55681012141618202225附加箍筋承受集中荷载承载力表F(kN)箍筋箍筋个数钢筋级别肢直径每侧1个每侧2个每侧3个每侧4个数(mm)（共2个）（共4个）（共6个）（共8个）623.847.571.395.0双842.284.4126.7168.9肢1066.0131.9197.9263.91295.0190.0285.0380.0HPB23514129.3258.6387.9517.2（I级）647.595.0142.5190.0四884.4168.9253.3337.8

17、肢10131.9263.9395.8527.812190.0380.0570.0760.014258.6517.2775.81034.5箍筋箍筋个数钢筋级别肢数直径每侧1个每侧2个每侧3个每侧4个(mm)（共2个）（共4个）（共6个）（共8个）633.967.9101.8135.7双860.3120.6181.0241.3肢1094.2188.5282.7377.012135.7271.4407.2542.9HRB33514184.7369.5554.2738.9（H级）667.9135.7203.6271.4四8120.6241.3361.9482.510188.5377.0565.5754

18、.0肢12271.4542.9814.31085.714369.5738.91108.41477.8钢筋级别附加吊钢筋直径(mm)弓筋承受集中荷载承载力表F(kN)弯起角度a=45a=601根2根3根4根1根2根3根4根HPB235（I级）1233.667.2100.8134.441.182.3123.4164.51445.791.4137.2182.956.0112.0168.0224.01659.7119.4179.1238.873.1146.3219.4292.51875.6151.1226.7302.392.6185.1277.7370.22093.3186.6279.9373.211

19、4.3228.5342.8457.122112.9225.8338.7451.6138.3276.5414.8553.125145.8291.6437.3583.1178.5357.1535.6714.2钢筋级别钢筋直径(mm)弯起角度a=45a=601根2根3根4根1根2根3根4根HRB335（H级）1248.096.0143.9191.958.8117.5176.3235.11465.3130.6195.9261.280.0160.0240.0320.01685.3170.6255.9341.2104.5208.9313.4417.918108.0215.9323.9431.8132.22

20、64.5396.7528.920133.3266.6399.9533.1163.2326.5489.7653.022161.3322.6483.8645.1197.5395.0592.6790.125208.3416.5624.8833.0255.1510.1765.21020.3本章适用的现浇钢筋混凝土房屋的结构类型和最大高度应符合表的要求。平面和竖向均不规则的结构或建造于W类场地的结构，适用的最大高度应适当降低。注：本章的“抗震墙”即国家标准混凝土结构设计规范GB50010中的剪力墙。表现浇钢筋混凝土房屋适用的最大高度（m）结构类型烈度6度7度8度9度框架60554525框架-抗震墙130

21、12010050抗震墙14012010060部分框支抗震墙12010080不应采用框架核心筒15013010070筒中筒18015012080板柱-抗震墙403530不应采用注：1房屋高度指室外地面到主要屋面板板顶的高度（不包括局部突岀屋顶部分）；2框架一核心简结构指周边稀柱框架与核心筒组成的结构；3部分框支抗震墙结构指首层或底部两层框支抗震墙结构；4乙类建筑可按本地区抗震设防烈度确定适用的最大高度；5超过表内高度的房屋，应进行专门研究和论证，采取有效的加强措施。钢筋混凝土房屋应根据烈度、结构类型和房屋高度采用不同的抗震等级，并应符合相应的计算和构造措施要求。丙类建筑的抗震等级应按表确定结框架

22、结构表6.1.构类型高度（m）2现630凝土房屋烈30级度30925框架四三三-二-二-一一-一一剧场、体育馆等大跨度公共建筑三-二-一一-一一框架抗震墙结构高度（m）60606050框架四三三-二-二-一一-一一抗震墙三-二-一一-一一-一一抗震墙结构高度（m）80808060抗震墙四三三-二-二-一一-一一部分框支抗震墙结构筒体抗震墙三-二-二-一一/框支丿架框架昙框框架-二-二-一一-一一结构核心筒筒中筒核心筒外筒-二-二-一一-一一内筒三-二-一一-一一板柱抗震墙结构板柱的柱抗震墙-二-二-一一/注：1建筑场地为I类时，除6度外可按表内降低一度所对应的抗震等级采取抗震构造措施，但相应的

23、计算要求不应降低；2接近或等于高度分界时，应允许结合房屋不规则程度及场地、地基条件确定抗震等级；3部分框支抗震墙结构中，抗震墙加强部位以上的一般部位，应允许按抗震墙结构确定其抗震等级。钢筋混凝土房屋抗震等级的确定，尚应符合下列要求：1框架一抗震墙结构，在基本振型地震作用下，若框架部分承受的地震倾覆力矩大于结构总地震倾覆力矩的50%，其框架部分的抗震等级应按框架结构确定，最大适用高度可比框架结构适当增加。2裙房与主楼相连，除应按裙房本身确定外，不应低于主楼的抗震等级；主楼结构在裙房顶层及相邻上下各一层应适当加强抗震构造措施。裙房与主楼分离时，应按裙房本身确定抗震等级。3当地下室顶板作为上部结构的嵌固部位时，地下一层的抗震等级应与上部结构相同，地下一层以下的抗震等级可根据具体情况采用三级或更低等级。地下室中无上部结构的部分，可根据具体情况采用三级或更低等级。4抗震设防类别为甲、乙、丁类的建筑，应按本规范第条规定和表确定抗震等级；其中，8度乙类建筑高度超过表规定的范围时，应经专门研究采取比一级更有效的抗震措施。注：本章“一、二、三、四级”即“抗震等级为一、二、三、四级”的简称。