【正文】 .... 32 管道摩阻損失 ............................................................................................................................................. 32 錨具變形損失 ............................................................................................................................................. 33 混凝土彈性壓縮損失 ................................................................................................................................. 33 預應力鋼筋應力松弛損失 ......................................................................................................................... 34 混凝土的收縮徐變損失 ............................................................................................................................. 34 關鍵截面預應力損失計算 ......................................................................................................................... 35 第 7 章 次內力計算 .................................................................................................................. 38 預加力次內 力計算 ..................................................................................................................................... 38 混凝土徐變次內力計算 ............................................................................................................................. 42 溫度次內力計算 ......................................................................................................................................... 43 溫度對結構的影響 ............................................................................................................................. 43 結構溫度場的確定 ............................................................................................................................. 43 基礎沉降次內力計算 ................................................................................................................................. 45 第 8 章 內力組合計算 ............................................................................................................... 47 荷載的分類 .................................................................................................................................................. 47 荷載分項系數(shù) ............................................................................................................................................. 47 主力組合 ...................................................................................................................................................... 47 主力 +附加力 ............................................................................................................................................... 50 第 9 章 主梁截面驗算 ............................................................................................................... 52 強度驗算 ...................................................................................................................................................... 52 正截面強度驗算 ................................................................................................................................. 52 斜截面強度驗算 ................................................................................................................................. 55 抗裂驗算 ...................................................................................................................................................... 57 正截面抗裂驗算 ................................................................................................................................. 57 斜截面抗裂驗算 ................................................................................................................................. 58 應力驗算 ...................................................................................................................................................... 59 施工階段應力 ..................................................................................................................................... 59 預應力鋼筋應力驗算 ......................................................................................................................... 60 運營階段應力驗算 ............................................................................................................................. 61 剛度驗算 ...................................................................................................................................................... 64 豎向撓度驗算 ..................................................................................................................................... 64 橫向撓度驗算 ..................................................................................................................................... 64 梁端轉角驗算 ..................................................................................................................................... 64 自振頻率驗算 ..................................................................................................................................... 65 畢業(yè)設計總結 .......................................................................................................................... 67 西南交通大學本科畢業(yè)設計 （論文） 第 XI 頁 致謝 ....................................................................................................................................... 69 參考文獻 ................................................................................................................................ 70 西南交通大學本科畢業(yè)設計 （論文） 第 1 頁 第 1 章 緒論 設計概述 預應力混凝土連續(xù)梁橋概述 連續(xù)梁是一種古老的結構體系，它具有變形小、結構剛度好、行車平順舒適、伸縮縫 少、養(yǎng)護簡單、抗震能力強等優(yōu)點。 Internal force calculation。 關鍵詞 ：連續(xù)梁；懸臂施工；內力計算；驗算； midas 西南交通大學本科畢業(yè)設計 （論文） 第 VII頁 Abstract This design is a prestressed concrete continuous beam bridge . It is a double line railway . This design mainly designed the superstructure of the bridge. The load for design is the “ ZK” live load. It adopt a