鋼筋的計(jì)算截面面面積及理論論重量公稱直徑mm不同根數(shù)鋼筋的的計(jì)算截面面面積/mm2單根鋼筋理論重重量(kg/m))123456789628.357851131421701982262550.2226.533.2661001331661992322652990.260850.31011512012523023524024530.3958.252.81061582112643173704234750.4321078.51572363143934715506287070.61712113.122633945256567879190410170.88814153.93084616157699231077123113851.2116201.1402603804100512061407160818091.5818254.55097631017127215261780203622902.0020314.26289411256157018842200251328272.4722380.176011401520190022812661304134212.9825490.998214731964245429453436392744183.8528615.8123218472463307936954310492655424.8332804.2160924133217402148265630643472386.31361017.9203630544072508961077125814391617.99401256.625133770502762837540879610053113109.87鋼筋混凝土板最最小配筋量mm2混凝土標(biāo)號(hào)鋼筋種類0.45ft//fy和0.2的較大值板厚(mm)為為下行數(shù)值時(shí)時(shí)每米寬范圍圍內(nèi)最小配筋筋mm290100110120130140150160170C20HPB2350.236212236260283307330354378401HRB3350.200180200220240260280300320340C25HPB2350.272245272299326354381408435462HRB3350.200180200220240260280300320340C30HPB2350.306275306337367398428459490520HRB3350.215194215237258280301323344366梁內(nèi)單層鋼筋最最多根數(shù)梁寬(mm)鋼筋直徑(mmm)1416182022252820043/43/43332/3250554/5443/433006/765/65/654/543507/876/76/765/64/54008/98/97/87/876/75/6單肢箍Asv11/s(mmm2/mm)箍筋間距s鋼筋直徑(mmm)6810121000.2830.5030.7851.1311500.1880.3350.5230.7542000.1420.2510.3920.566每米板寬內(nèi)的鋼鋼筋截面面積積表鋼筋間距(MMM2)當(dāng)鋼筋直徑(mmm)為下列數(shù)值值時(shí)的鋼筋截截面面積(mm2)44.55681012141618202225701802272804047181122161621992872363544885430701275168212262377670104715082053268133934189506865458015719924535362898214141924251331813927475261369014017721831455987312571710223428273491422454541001261591962835037851131153920112545314238014909110114145178257457714102813991828231328563456446212010513316423641965494212831676212126183168409112510112715722640262890512321608203625133041392713097122151217387604870118415471957241729243776140901141402023595618081100143618182244271535061508410613118833552475410261340169620942534327216079991231773144917079621257159019632376306817074941151662964626659061183149718482236288717572911121622874496468801149145417952172280518070881091572794366288551117141417452112272719066841031492654135958101058133916532001258420063809814125139256577010051272157119012454250506479113201314452616804101812571521196330042536594168262377513670848104712671636板厚度與跨度的的最小比值(h/Lo))板的支承情況板的種類單向板雙向板懸臂板簡支1/301/351/10～1//12連續(xù)1/351/40荷載取值表結(jié)構(gòu)名稱荷載標(biāo)準(zhǔn)值(KKN/m2)計(jì)算公式備注現(xiàn)澆樓板（自動(dòng)動(dòng)計(jì)算板自重重）臥室、客廳板自重+1.881.45+177x0.022廚、衛(wèi)板自重+2.2291.90+177x0.022陽臺(tái)板自重+2.2291.95+177x0.022非上人屋面板自重+3.88上人屋面板自重+4.77預(yù)制板臥室、客廳3.81.97+1..45+177x0.022板跨≤420004.32.54+1..45+177x0.0224200≤板跨跨≤6000樓梯7.0板厚>130時(shí)時(shí)荷載增加實(shí)心砌體240墻5.619x0.