【正文】 定 ........................................................................................... 5 蓋梁、墩柱、鉆孔樁尺寸擬定 ................................................................... 5 橋梁主要材料選用 ....................................................................................... 5 第三章 橋面板計(jì)算 .................................................................................................... 6 行車道板設(shè)計(jì) ..................................................................................................... 6 恒載內(nèi)力 ........................................................................................................ 6 活載內(nèi)力 ........................................................................................................ 6 IV 內(nèi)力組合 ........................................................................................................ 8 ...................................................................................... 8 恒載內(nèi)力 ........................................................................................................ 8 ........................................................................................................ 9 內(nèi)力組合 ........................................................................................................ 9 配筋設(shè)計(jì) ........................................................................................................... 10 支點(diǎn)處配筋 ................................................................................................. 10 跨中配筋 ..................................................................................................... 10 懸臂板配筋 ................................................................................................. 11 第四章 主梁內(nèi)力計(jì)算 .............................................................................................. 12 主梁單元劃分 ................................................................................................... 12 主梁截面幾何特性計(jì)算 ................................................................................... 13 中梁幾何特性計(jì)算 ..................................................................................... 13 其它截面的截面特性計(jì)算 .......................................................................... 14 .................................................................................................. 15 外邊梁恒載集度 ....................................................................................... 15 中梁恒載集度 ........................................................................................... 15 彎矩計(jì)算 .................................................................................................... 16 剪力計(jì)算 ................................................................................................... 17 其它截面恒載內(nèi)力計(jì)算 .............................................................................. 17 活載內(nèi)力計(jì)算 ................................................................................................... 17 沖擊系數(shù)計(jì)算 ............................................................................................ 17 車道折減系數(shù) ........................................................................................... 18 計(jì)算主梁荷載分布系數(shù) .................................................................................... 18 邊跨荷載橫向分布系數(shù)計(jì)算 ...................................................................... 18 m 計(jì)算 ............................................................. 21 m 計(jì)算 ............................................................. 24 活載內(nèi)力計(jì)算 ................................................................................................... 26 汽車彎矩 ..................................................................................................... 26 汽車剪力 ..................................................................................................... 27 V 其它因素引起的次內(nèi)力計(jì)算 ............................................................................ 28 內(nèi)力組合 ............................................................................................................ 29 基本組合 ..................................................................................................... 29 短期效應(yīng)組合 ............................................................................................. 29 長期效應(yīng)組合 ............................................................................................. 30 其它截面的內(nèi)力組合 ................................................................................. 30 第五章 預(yù)應(yīng)力鋼束的估算與布置 ....................................................................... 35 力筋估算 ........................................................................................................ 35 橫截面布置 ..................................................................................................... 39 立面布置與平面布置 ..................................................................................... 40 第六章 預(yù)應(yīng)力損失及有效預(yù)應(yīng)力計(jì)算 .................................................................. 41 計(jì)算內(nèi)容 ............................................................................................................ 41 預(yù)應(yīng)力筋與管道壁間摩擦損失 ........................................................................ 41 控制應(yīng)力與有關(guān)參數(shù)確定 .......................................................................... 41 各截面的平均值 ......................................................................................... 41 錨具變形、鋼束回縮、接縫壓縮引起的預(yù)應(yīng)力損失 2s? 計(jì)算 ...................... 42 計(jì)算公式 ...................................................................................................... 42 .............................................................................................. 42 混凝土的彈性壓縮引起的應(yīng)力損失 ................................................................ 42 計(jì)算方法 ...................................................................................................... 42 計(jì)算結(jié)果 .........................