常用鋼筋混凝土表

鋼筋混凝土基本數(shù)據(jù)C15C20C25C30C35C40C45C50C55C60C65C70C75C80fk(N/mm2)10.013.416.720.123.426.829.632.435.538.541.544.547.750.2ftk(N/mm2)1.271.541.782.012.202.392.512.642.742.852.932.993.053.11f(N/mm2)c7.29.611.914.316.719.121.223.125.327.529.731.833.835.9ft(N/mm2)0.911.101.271.431.571.711.801.891.962.042.092.142.182.22E(104N/mm2)c2.202.552.803.003.153.253.353.453.553.603.653.703.753.80線脹系數(shù)aC=1x10-5/oC泊松比vc=0.2剪變模量G=0.4Ecf=fck/Yc=f；k/1.4「fjYc=f；k/1.4鋼筋基本數(shù)據(jù)種類符號直徑d(mm)fyk(N/mm2)fy(N/mm2)f，(N/mm2)ES(105N/mm2)熱扎鋼筋HPB235(Q235)8-202352102102.1HRB335(20MnSi)6-503353003002.0HRB400(20MnSiV20MnSiNb,20MnSiTi)6-504003603602.0RRB400(K20MnSi)8-404003603602.0軸拉和小偏拉時，鋼筋抗拉強度設(shè)計值大于300時,仍用300fyfk/1.1鋼筋計算截面面積及理論重量123456789kg/m628.357851131421701982262550.222850.31011512012523023524024530.3951078.51572361503141803934715506287070.61712113.122633915045220018056525022067879190410170.88814153.93084611801506152007692502209233001077123113851.2116201.1402603180150804220200100525012063001407350160840018091.5818254.55097631801017220200127230025015263503001780400350203645040022902.0020314.26289411801256200157030025018843503002200400350251345040028272.4722380.176011402001801520250200190030022813502661450400304150045034212.9825490.998214732001801964300250245435030029454003503436550450392755045044183.85注：按保護層厚度25計算每米板寬內(nèi)鋼筋截面面枳466/888/101010/121212/141414/161618202225100126283393503644785958113113351539177520112545314238014909120105236327419537654798942111212831480167621212618316840911251002263144025156287669051068123214201608203625133041392713021830238749560473787010271184136615471957241729243776140202281359460561684808954110012681436181822442715350615018926533542952363975489010261183134016962094254332721601772463144034915997078349621110125715901963237630681701662312963794625646657869061044118314971848223628871801572182793584365326287428559851117141417452112272719014920726533941350459570281093410581339165320012584200141196251322393479565668770888100512721571190124542201291782282923574365146077008079141157142817282231250113157201258314383452534616710804101812571521196328010114018023028134240447755063471890911221358175330094131168215262320377445513596708481047126716362832361006153804310179125492664348143150410552626786200307940215089250246332174072

縱向受力鋼筋的混凝土保護層最小厚度(mm)環(huán)境類另U板、墻、殼粱柱基礎(chǔ)忍C20C25-C45NC50忍C20C25-C45NC50忍C20C25-C45NC50一201515302525303030有墊層時40mm無墊層時70mm二a-2020-3030-3030b-2520-3530-3530三-3025-4035-4035鋼筋的錨固長度和搭接長度一、二級三級四級、非抗震C20C25C30C35C40C20C25C30C35C40C20C25C30C35C4023531d27d24d22d20dla=af/f；d33538d33d30d27d25d40046d40d36d32d30dlR=_aE115!L05!I23536d32d28d26d23d33d29d26d24d21dlpaE33544d38d34d31d29d40d35d31d28d26d40053d46d41d37d34d48d42d37d34d31dy=ZlallE=ZlaEz=1.2(25%),1.4(50%),1.6(100%)335,400級鋼筋d大于25時乘1.1滑模時乘1.1

最小配筋率pmin(%)非抗震受壓構(gòu)件全部縱向鋼筋0.6。最小配筋率應(yīng)按全截面面枳計算，受彎和大偏拉構(gòu)件T形截面時應(yīng)按bXh計算。地基板可為0.15。大于C60時，加0.1。用HEB400,RRB400時，減0.1一側(cè)縱向鋼筋0.2受彎、偏拉、軸拉構(gòu)件一側(cè)受拉鋼筋0.2和45￡/fy較大者抗震等級一級二級三級四級框架梁支座0.4和80切較大者'0.3和65￡/f較大者y0.25和55￡/f較大者y0.25和55ft/f較大者y梁端底頂As比值一級不小于0.5,二級不小于0.3跨中0.3和65f/f,.ty較大者0.25和55ft/f較大者y0.2和45f/f,.ty較大者0.2和45切較大者y框架柱中、邊柱1.00.80.70.6。一側(cè)不小于0.2°W場地較高建筑，加0.1。大于C60時，加0.1。用HRB400,RRB400時，減0.1角柱、框支柱1.21.00.90.8剪力墻水平和豎向分布鋼筋的配筋率psh(=Ash/bSv)、psv(=Asv/bSh):一、二、三級不應(yīng)小于0.25%，四級和非抗震不應(yīng)小于0.2%，框一剪：0.25%，部分框架一剪力墻底部加強部位：0.3%粱中最小箍筋配筋百分率粱中最小箍筋配筋百分率PC20C25C30C35C40C45C50C55C60C65C70C75C802350.24f/ftyv0.1260.1450.1630.1790.1950.2060.2160.2240.2330.2390.2450.2490.2540.28f/ftyv0.1470.1690.1910.2090.2280.2400.2520.2610.2720.2790.2850.2910.2963350.24f/f0.0880.1020.1140.1260.1370.1440.1510.1570.1630.1670.1710.1740.1780.28f/ftyv0.1030.1190.1330.1470.1600.1680.1760.1830.1900.1950.2000.2030.207min鋼筋混凝土受彎構(gòu)件縱向受拉鋼筋最大配筋率Pa(%)^QoXC15C20C25C30C35C40C45C50C55C60C65C70C75C802352.1052.8073.4794.1814.8825.5846.1986.7537.2057.6278.0188.3548.6368.9193351.7602.1822.6223.0623.5023.8874.2354.5134.7715.0095.2125.3815.5494001.3801.7112.0562.4012.7463.0483.3223.5373.7373.9214.0774.2074.