【正文】 關鍵詞： 橋跨結構設計、支座設計、墩臺設計、地基設計。 Support design and calculation。 Bridge foundation foundation structure design and calculation。 Key Words： Bridge span structure design。 目 錄 第 1章 緒論 ...................................................................................................................................1 概述 ......................................................................................................................................1 橋跨設計參數 ......................................................................................................................2 第 2 章 橋跨設計 ...........................................................................................................................3 橋跨結構設計 ......................................................................................................................3 橋跨內力計算 ......................................................................................................................5 恒載內力計算 ...............................................................................................................5 活載內力計算 ...............................................................................................................6 內力組合 .....................................................................................................................18 截面設計 ............................................................................................................................18 材料及安全系數 .........................................................................................................19 跨中截面配筋設計 .....................................................................................................19 跨中正截面強度校核 .................................................................................................21 支點斜截面抗剪強度校核 .........................................................................................21 l/4 截面配筋驗算 .........................................................................................................22 腹筋驗算 .....................................................................................................................22 裂縫寬度驗算 ....................................................................................................................24 撓度與預拱度計算 ............................................................................................................25 截面慣性矩計算 .........................................................................................................25 跨中活載撓度驗算 .....................................................................................................26 預拱度判別與大小計算 .............................................................................................27 第 3 章 支座設計 .........................................................................................................................28 支座類型及平面尺寸 ........................................................................................................28 支座厚度確定 ....................................................................................................................28 支座偏轉情況驗算 ............................................................................................................30 支座抗滑穩(wěn)定性驗算 ........................................................................................................30 第 4 章 重力式橋墩設計 .............................................................................................................32 橋墩類 型、材料選擇及結構設計 ....................................................................................32 截面強度驗算 ....................................................................................................................34 驗算截面的選取 .........................................................................................................34 驗算截面的內力計算 .................................................................................................34 截面應力驗算 .............................................................................................................35 截面偏心驗算 .............................................................................................................36 第 5 章 地基基礎設計 .................................................................................................................37 基礎類型及埋深 ................................................................................................................37 按承載力大小確定基底尺寸 ............................................................................................38 地基承載力驗算 ................................................................................................................38 基礎設計 ............................................................................................................................38 抗傾覆穩(wěn)定性驗算 ............................................................................................................39 抗滑移穩(wěn)定性驗算 ............................................................................................................39 第 6 章 結論 .................................................................................................................................40 參考文獻 .......................................................................................................................................41 致謝 ...............................................................................................................................................42 附 A1 橋跨結 構布置 1 圖 附 A2 橋跨結構布置 2 圖 附 A3 橋面板配筋圖 附 A4 墩帽三視圖 附 A5 墩臺三視圖 附 A6 基礎三視圖 武漢理工大學畢業(yè)設計 1 第 1 章 緒論 概述 橋梁工程在學科上屬于土木工程的分支，在功能上是交通工程中的咽喉。我國自改革開放以來，路橋建設得到了飛速的發(fā)展， 對改善人民的生活環(huán)