【正文】 三跨預應力連續(xù)箱型梁橋設計畢業(yè)設計目 錄第 1 章 緒 論 ...................................................................................................................1 概述 ........................................................................................................................................................................1 連續(xù)梁橋概述 ................................................................................................................................................1 連續(xù)梁橋受力特點 ........................................................................................................................................1 畢業(yè)設計的主要內容 ............................................................................................................................................2 方案的比選 ............................................................................................................................................................2第 2 章 橋跨總體布置及結構主要尺寸 .............................................................................3 橋跨總體布置 ........................................................................................................................................................3 設計概述 ........................................................................................................................................................3 主要技術指標 ................................................................................................................................................3 材料規(guī)格 ........................................................................................................................................................5 設計規(guī)范 .........................................................................................................................................................5 計算參數(shù)及單位約定 .....................................................................................................................................5 尺寸擬定 ................................................................................................................................................................6 變截面箱梁形式 ............................................................................................................................................6 主梁高度 ........................................................................................................................................................6 頂?shù)装搴穸?....................................................................................................................................................6 腹板厚度 ........................................................................................................................................................7 懸臂板布置 ....................................................................................................................................................7 箱梁內外承托布置 ........................................................................................................................................7 主梁分段 .................................................................................................................................................................7 節(jié)段劃分 ........................................................................................................................................................7 施工方法 ........................................................................................................................................................8第 3 章 荷載內力計算 .....................................................................................................10 恒載內力計算模型 ..............................................................................................................................................10 恒載內力計算 .......................................................................................................................................................11 截面特征計算 ..............................................................................................................................................11 恒載計算結果 ..............................................................................................................................................13 附加內力計算 ......................................................................................................................................................15 支座沉降對結構內力的影響 ......................................................................................................................15 收縮徐變對結構內力的影響 .......................................................................................................................19 溫度對結構內力的影響 ...............................................................................................................................21 活載內力計算 .......................................................................................................................................................26 橫向分布系數(shù)的考慮 ...................................................................................................................................27 活載因子的計算 ..........................................................................................................................................27 單元影響線計算 ..........................................................................................................................................28 汽車荷載 ......................................................................................................................................................31 人群荷載 ......................................................................................................................................................34 作用效用組合 ...................................................................................................................................