1、結(jié)構(gòu)設(shè)計(jì)常用表鋼筋的計(jì)算截面面積及公稱質(zhì)量表直徑 d (mm)不同根數(shù)直徑的計(jì)算截面面枳(2、 mm )單根鋼筋 公稱質(zhì)里(kg/m)123456789628.3578511314117019822662540.222850.31011512012513023524024520.3951078.51572363143934715506287070.61712113.122633945256567979290510180.88814153.93084626167709241078123213851.20816201.1402603804100512061407160818101.57818254

2、.55097631018127215271781203622901.99820314.26289421257157118852199251328272.46622380.176011401521190122812661304134212.98425490.998214731963245429453436392744183.85328615.8123218472463307936954310492655424.83432804.2160824133217402148255630643472386.313361017.9203630544072508961077125814391617.99040

3、1256.625133770502762837540879610053113109.865每米板寬內(nèi)的鋼筋截面面積表鋼筋 間距 (mm)當(dāng)鋼筋直徑(mm)為卜列數(shù)值時(shí)的鋼筋it面面積(2、mm )5.56788.51010.51214161820222570399404550718810112212361616219928723635448854307012753173775136707561047115415082053268133934189506865458029735348162870998210821414192425133181392747526136902643144275596

4、308739621257171022342827349142245454100237283385503567785865113115392011254531423801490911021625735045751671478710281399182823132856345644621201982363214194736547219421283167621212618316840911251902263084024546286929051232160820362513304139271301832172963874366046668701184154719572417292437761401702

5、022753594055616188081100143618182244271535061501581882563353785245777541026134016962094253432721601481772403143544915417079621257159019632376306817014016622629633446250966590611831497184822362887175136162220287324449495646880114914541795217228051801321572142793154364816288551117141417452112272719012

6、514920226529941345659581010581339165320012584200119141192251284392433565770100512721571190124542509511315420122731434645261680410181257152119633007994128168189262288377513670848104712671636梁縱向鋼筋單排最大根數(shù)梁寬b (mm)鋼筋直徑(mm)141618202225283236401502/32/322221/211120043/43/43332/3221/2250554/54/543/432/322300

7、6/765/65/654/543/432/33507/876/76/765/64/543/434008/98/97/87/86/76/75/64/54/53/44509/109/108/98/97/97/86/75/64/54/550010/1210/1110/119/108/107/96/86/75/64/555012/1311/1211/1210/119/118/107/96/85/75/660013/1412/1412/1311/1210/129/118/107/86/75/7梁寬b14161820222528323640注：表內(nèi)分?jǐn)?shù)值，其分子為梁上部縱筋單排最大根數(shù)，分母為梁下部鋼筋單

8、排最大根數(shù)。柱縱向鋼筋單排最大根數(shù)柱寬b (mm)鋼筋直徑(mm)1416182022252832364040065555554444506666655544500777766655555088777766656009888877766650109998887767001010109998877750111110101099888800121111111010109988501312121211111010999001313131212111110109地基基礎(chǔ)設(shè)計(jì)等級(jí)設(shè)計(jì) 等級(jí)建筑和地基類型甲笏I對(duì)地基變形有特殊要求的建筑物復(fù)雜地質(zhì)條件下的坡上建筑物（包括高邊坡）對(duì)原有工程影口向較大的新建建

9、筑物場(chǎng)地和地基條件復(fù)雜的一般建筑物位于復(fù)雜地質(zhì)條件及軟土地區(qū)的二層及二層以上地卜室的基坑工程乙笏除甲級(jí)、級(jí)以外的工業(yè)與民用建筑物丙笏1場(chǎng)地和地基條件簡(jiǎn)單、荷載分布均勻的七層及七層以下民用建筑及 一般工業(yè)建筑物；次要的輕型建筑物受彎構(gòu)件的撓度限值構(gòu)件類型撓度限值吊車梁：手動(dòng)吊車10/500電動(dòng)吊車10/600屋蓋、樓蓋及樓梯構(gòu)件：當(dāng)lo<7m時(shí)10/200(10/250)當(dāng) 7M lo< 9m時(shí)10/250(10/300)當(dāng)lo> 9m時(shí)10/300(10/400)注：1、表中l(wèi)o為構(gòu)件的計(jì)算跨度；計(jì)算懸臂構(gòu)件的撓度限度時(shí)，其計(jì)算跨度lo按實(shí)際懸臂長(zhǎng)度的 2倍取用。2、表中括號(hào)

10、內(nèi)的數(shù)值適用于使用上對(duì)撓度有較高要求的構(gòu)件；3、如果構(gòu)件制作時(shí)預(yù)先起拱，且使用上也允許，則在驗(yàn)算撓度時(shí)，可將計(jì)算所得的撓度值減去起拱值；對(duì)預(yù)應(yīng)力混凝土構(gòu)件， 尚可減去預(yù)加力所產(chǎn)生的反拱值；4、構(gòu)件制作是的起拱值和預(yù)加力所產(chǎn)生的反拱值，不宜超過(guò)構(gòu)件在相應(yīng)荷載組合作用下的計(jì)算撓度值。結(jié)構(gòu)構(gòu)件的裂縫控制等級(jí)及最大裂度寬度限值環(huán)境類別鋼筋混凝土結(jié)構(gòu)預(yù)應(yīng)力混凝土結(jié)構(gòu)裂縫控制等級(jí)3Hm裂縫控制等級(jí)3lim一三級(jí)0.30 (0.40)三級(jí)0.20二 a0.200.10二 b二級(jí)一二 a、二 b一級(jí)一混凝土強(qiáng)度設(shè)計(jì)值(N/mm2)強(qiáng)度種類混凝土強(qiáng)度等級(jí)C15C20C25C30C35C40C45C50C55C6

11、0C65C70C75C80fc7.29.611.914.316.719.121.123.125.327.529.731.833.835.9ft0.911.101.271.431.571.711.801.891.962.042.092.142.182.22混凝土保護(hù)層最小厚度c (mm)環(huán)境類別板、墻、殼梁、柱、桿一1520二 a2025二 b2535三a3040三b4050柱軸壓比限值結(jié)構(gòu)類型抗震等級(jí)一一三四框架結(jié)構(gòu)0.650.750.850.90框架-抗震墻，板柱-抗震墻、 框架-核心筒及筒中筒0.750.850.900.95部分框支抗震墻0.60.7一縱向受力鋼筋的最小配筋百分率p min

12、(直( )環(huán)境類別板、墻、殼梁、柱、桿受壓構(gòu)件全部縱向鋼筋強(qiáng)度等級(jí)500MPa0.50強(qiáng)度等級(jí)400MPa0.55強(qiáng)度等級(jí) 300MPa、335MPa0.60一側(cè)縱向鋼筋0.20受彎構(gòu)件、偏心構(gòu)件、軸心受拉構(gòu)件一側(cè)的受拉鋼筋0.20和45ft/fy中的較大值最小配筋率P min® (%)C15C20C25C30C35C40C45C50C55C60C65C70C75C80HPB3000.2000.2000.2120.2380.2620.2850.3000.3150.3270.3400.3480.3570.3630.370HRB335HRBF3350.2000.2000.2000.215

13、0.2360.2570.2700.2840.2940.3060.3140.3210.3270.333HRB400HRBF400.200.200.200.200.200.210.220.230.240.250.260.260.270.27000000456551838RRB400HRB5000.200.200.200.200.200.200.200.210.220.230.230.240.240.25HRBF50000000331051500柱全部縱向受力鋼筋最小配筋率（ ）類另I抗震等級(jí)一一三四中柱和邊柱0.9 (1.0)0.7 (0.8)0.6 (0.7)0.5 (0.6)角柱、框支柱1.1

14、0.90.80.7注：1表中括號(hào)內(nèi)數(shù)值用于框架結(jié)構(gòu)的柱；2鋼筋強(qiáng)度標(biāo)準(zhǔn)值小于 400MPa時(shí)，表中數(shù)值應(yīng)增加 0.1,鋼筋強(qiáng)度鋼筋強(qiáng)度標(biāo)準(zhǔn)值為400MPa時(shí)，表中數(shù)值應(yīng)增加 0.05;3混凝土強(qiáng)度等級(jí)高于 C60時(shí)，上述數(shù)值應(yīng)增加 0.1。框架梁縱向受力鋼筋最小配筋率（）抗震等級(jí)梁中位置支座跨中一級(jí)0.40和80ft/fy中的較大值0.30和65ft/fy中的較大值二級(jí)0.30和65fjfy中的較大值0.25和55ft/fy中的較大值三、四級(jí)0.25和55ft/fy中的較大值0.20和45ft/fy中的較大值附加箍筋承受集中荷載承載力表F （kN）鋼筋級(jí)別箍筋箍筋個(gè)數(shù)肢數(shù)直徑（mm）每側(cè)1個(gè)（

15、共2個(gè)）每側(cè)2個(gè)（共4個(gè)）每側(cè)3個(gè)（共6個(gè)）每側(cè)4個(gè)（共8個(gè)）HPB235 (I級(jí))雙肢623.847.571.395.0842.284.4126.7168.91066.0131.9197.9263.91295.0190.0285.0380.0四肢647.595.0142.5190.0884.4168.9253.3337.810131.9263.9395.8527.812190.0380.0570.0760.0HRB335(n級(jí))雙肢633.967.9101.8135.7860.3120.6181.0241.31094.2188.5282.7377.012135.7271.4407.2542.

16、9四667.9135.7203.6271.4肢8120.6241.3361.9482.510188.5377.0565.5754.012271.4542.9814.31085.7附加吊筋承受集中荷載承載力表（kN）鋼筋級(jí)別鋼筋直徑（mm）彎起角度a= 45 °a= 601根2根3根4根1根2根3根4根HPB235（I級(jí)）1233.667.2100.8134.441.182.3123.4164.51445.791.4137.2182.956.0112.0168.0224.01659.7119.4179.1238.873.1146.3219.4292.51875.6151.1226.73

17、02.392.6185.1277.7370.22093.3186.6279.9373.2114.3228.5342.8457.122112.9225.8338.7451.6138.3276.5414.8553.125145.8291.6437.3583.1178.5357.1535.6714.2HRB335（n級(jí)）1248.096.0143.9191.958.8117.5176.3235.11465.3130.6195.9261.280.0160.0240.0320.01685.3170.6255.9341.2104.5208.9313.4417.918108.0215.9323.9431.8

18、132.2264.5396.7528.920133.3266.6399.9533.1163.2326.5489.7653.022161.3322.6483.8645.1197.5395.0592.6790.125208.3416.5624.8833.0255.1510.1765.21020.3防震縫最小寬度6.1.4 鋼筋混凝土房屋需設(shè)置防震縫時(shí)，應(yīng)符合下列要求：1 防震縫寬度應(yīng)分別符合下列要求：1）框架結(jié)構(gòu)（包括設(shè)置少量抗震墻的框架結(jié)構(gòu)）房屋的防震縫寬度，當(dāng)高度不超過(guò)15m時(shí)不應(yīng)小于100mm；當(dāng)高度超過(guò) 15m時(shí)，6度、7度、8度和9度相應(yīng)每增加高度 5m、4m、3m和2m,宜加 寬 20mm;2 框架-抗震墻結(jié)構(gòu)房屋的防震縫寬度不應(yīng)小于本款1）項(xiàng)規(guī)定數(shù)值的70%,抗震墻結(jié)構(gòu)房屋的防震縫寬度不應(yīng)小于本款1）項(xiàng)規(guī)定數(shù)值的 50%,且均不宜小于 100mm。3 防震縫兩側(cè)結(jié)構(gòu)類型不同時(shí)，宜按需要較寬防震縫的結(jié)構(gòu)類型和較低房屋高度確立縫寬。估算板厚度h/l支撐情況連續(xù)簡(jiǎn)支單向板1/401/30雙向板1/451/40懸臂板1/10無(wú)梁樓蓋有柱帽1/35無(wú)柱帽1/30注:h為板厚度，l為板短邊跨度。地震作用下彈性層間位移角