【正文】 ...................................... 5 橫隔板 ................................................................................................................................................... 5 承托 (梗腋 )............................................................................................................................................ 6 箱梁底緣曲線方程 ....................................................................................................................................... 6 構(gòu)造特點(diǎn) ........................................................................................................................................................ 6 零號(hào)塊 .................................................................................................................................................... 6 掛籃 ........................................................................................................................................................ 6 合攏段 .................................................................................................................................................... 7 主梁分段 ........................................................................................................................................................ 7 節(jié)段劃分 .............................................................................................................................................. 7 計(jì)算圖示 ............................................................................................................................................... 8 施工階段劃分 ............................................................................................................................................... 9 施工注意事項(xiàng) ............................................................................................................................................. 10 第 3 章 結(jié)構(gòu)內(nèi)力計(jì)算 ............................................................................................................... 11 恒載內(nèi)力計(jì)算 ............................................................................................................................................. 11 材料特性 ............................................................................................................................................. 11 單元特性 ............................................................................................................................................. 12 施工荷載 ............................................................................................................................................. 12 二期恒載 ............................................................................................................................................. 12 計(jì)算模型 ............................................................................................................................................. 12 恒載計(jì)算結(jié)果 ..................................................................................................................................... 13 活載內(nèi)力計(jì)算 ............................................................................................................................................. 16 計(jì)算方法 ............................................................................................................................................. 16 活載動(dòng)力系數(shù)的計(jì)算 ......................................................................................................................... 16 第 4 章 預(yù)應(yīng)力鋼束設(shè)計(jì) ........................................................................................................... 19 預(yù) 應(yīng)力鋼束估算 ......................................................................................................................................... 19 計(jì)算原理 ............................................................................................................................................. 19 預(yù)應(yīng)力鋼束估算 ................................................................................................................................. 23 西南交通大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 第 X 頁(yè) 縱向向預(yù)應(yīng)力鋼束布置 ............................................................................................................................. 24 縱向預(yù)應(yīng)力鋼束的受力特點(diǎn) ............................................................................................................ 24 縱向預(yù)應(yīng)力鋼束布置原則 ................................................................................................................ 25 縱向預(yù)應(yīng)力束的布置 ......................................................................................................................... 25 豎向預(yù)應(yīng)力鋼束布置 ................................................................................................................................. 26 橫向預(yù)應(yīng)力鋼束布置 ................................................................................................................................. 26 普通鋼筋的布置 ......................................................................................................................................... 27 第 5 章 截面特性計(jì)算 ............................................................................................................... 28 計(jì)算原理 ...................................................................................................................................................... 28 凈截面幾何特性 ................................................................................................................................. 28 換算截面幾何特性 ............................................................................................................................. 29 截面幾何特性計(jì)算 ..................................................................................................................................... 30 第 6 章 預(yù)應(yīng)力損失及有效應(yīng)力 .............................................