計(jì)算公式:W=0.00617d2說(shuō)明:理論質(zhì)量按密度7.85g/cm3計(jì)算有縱肋鋼筋預(yù)應(yīng)力混凝土用熱處理有縱肋鋼筋的尺寸及質(zhì)量公稱直徑d1、d2/mm截面積/mm2理論質(zhì)量W/kg1m6m7.5m8.21052.8178.540.4320.6172.5923.7023.2404.628注:公稱直徑8.2mm,材料為48Si2Mn鋼注:公稱直 (共 188 字) [閱讀本文] >>
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 計(jì)算公式:W=0.00617d2說(shuō)明:理論質(zhì)量按密度7.85g/cm3計(jì)算有縱肋鋼筋預(yù)應(yīng)力混凝土用熱處理有縱肋鋼筋的尺寸及質(zhì)量公稱直徑d1、d2/mm截面積/mm2理論質(zhì)量W/kg1m6m7.5m8.21052.8178.540.4320.6172.5923.7023.2404.628注:公稱直徑8.2mm,材料為48Si2Mn鋼注:公稱直 (共 188 字) [閱讀本文] >>