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1、每米板宽内各种钢筋间距时钢筋截面面积表（mm2）钢筋 间距 （mm）钢筋直径(mm)3456789101214161820222528701011792814045507199091121161621992872363644895430701387907594.31672623775136718481047150820532681339341895068654582048088.4157245354481629795981141419242513318139284751613676918583.21482313334535927489241331181123652994369644725775
2、72399078.5140218314427559707872125717102234282834914223545468379574.51322072984055296708261190162021162679330740015167647710070.61261962833855036367851131153920112545314238014909615311064.21141782573504575787141028139918282314285634554463559412058.9105163236320419530654942128316762121261831684091512
3、812556.5100157226308402509628905123216082036251430413927492213054.496.6151218296387489604870118415471958241729243776473314050.589.7140202275359454561808110014361818224427153506439515047.183.8131189256335424523754102613401697209525343273410216044.178.51231772403143984917079621257159119642376306838461
4、7041.573.911516622629637446266590611831497184822362888361918039.269.810915721327935343662885511171414174621122727341819037.266.110314920226533541359581010581339165420012584323820035.362.898.214119225131839356577010051273157119012455307722032.157.189.31291752282893575147009141157142817282231279724029
5、.452.481.91181602092653274716418381060130915842045256425028.350.278.51131542012543144526168041018125715201964246126027.248.375.5109148193244302435592773979120814621888236728025.244.970.1101137180227281404550718909112213581753219830023.641.965.594.0128168212262377513670848104712671636205132022.139.26
6、1.488.0120157199245353481628795982118815341923梁截面高度与短跨计算跨度的关系分 类梁截面高度分 类梁截面高度分 类梁截面高度分类梁截面高度框架主梁L/10-L/18扁 梁L/12 -L/18挑 梁L/5 -L/6框支梁非抗震L/8简支梁L/8 -L/15单向密肋梁L/18 -L/22单跨预应力梁L/12 -L/15bN400抗震L/6连续梁L/10-L/18井字梁L/15 -L/20多跨预应力梁L/12 -L/20板的厚度与短跨计算跨度的关系板支承情况简支连续板的种类单向板L/30L/40双向板L/40L/50悬臂板L/10 (固)L/12楼梯板L
7、/25 -L/30无梁楼盖（有柱帽）L/32 -L/40无梁楼盖（无柱帽）L/30 -L/35受拉钢筋的锚固长度光面fv = 210带肋/ =300y带肋f =360yC1537d47d56dC2031d39d46dC2527d34d40dC3024d30d36dC3522d27d33dNC4020d25d30d钢筋的截面面积和排成一层时矩形截面梁的最小宽度(mm)截WA (mm2)及钢筋排列成一层时梁的最小宽度b (mm)值S一根一根二根四根五根六根七根八根九根A.AAbAbAbAbAbAbA628.35785113141170198226256850.3101151201251302352
8、4024521078.515723615031418039347155062870712113.1226339150452200180565250220678792905101814153.930846218015061620077025022092430010781232138816201.14026031801508042202001005250120630014073501608400101818254.550976318010182202001272300250152735030017814003502036450400229020314.26289421801257200157130
9、0250188535030021994003502513450400282722380.1760114020018015212502201900300228130026614504003041500450342125490.9982147320018019633002502454350300294540035034364504003927550450441828615.812321847250200246330030794003503695450400431055045049266005005542注：表中b值为分数形式时，分子数字表示梁顶截面最小宽度，分母数字表示梁底截面最小宽度。混凝土强度
10、设计值(N/mm2)及弹性模量(X10 4N/mm2)度类 强种混凝土强度等级C15C20C25C30C35C40C45C50C55C60C65C70C75C80A7.29.611.914.316.719.121.123.125.327.529.731.833.835.9A0.911.101.271.431.571.711.801.891.962.042.092.142.182.22E (xl04)2.202.552.803.003.153.253.353.453.553.603.653.703.753.80注：轴心受压及偏心受压构件，如截面长边或直径小于300mm时，则混凝土强度设计值应乘以系数0.8。普通钢筋强度设计值(N/mm2)及弹性模量(X10sN/nim2)种类E (xl05)热轧 钢筋HPB235 (Q235)2102102.10HRB335 (20MnSi)3003002.00HRB 400 (20MnSiV、20MnSiNi 20MnTi)3603602.00冷轧钢筋冷轧带肋550级3603601.90注：.轴心受拉及小偏心受拉构件的钢筋强度设计值大于300N/mm2时，仍应按300N/mm2取用。.成盘供应的550级钢筋调直后，强度设计值应按降低20N/mm2采用。纵向受力钢筋的最小
