箱型梁橋設計

土木工程論文編號:TM008  論文字數:29108,頁數:50    全套（包括圖紙，計算書，設計任務書）

目    錄   
前言 ……………………………………………………………………………………………………1
第一部分  上部結構的計算
 1.行車道板計算 ……………………………………………………………………………………2
 1.1 懸臂板荷載效應計算 ………………………………………………………………………2
 1.2 連續板荷載效應計算 ………………………………………………………………………2
 1.3 內力組合計算 ………………………………………………………………………………4
 1.4 行車道板配筋 ………………………………………………………………………………4
 2.主梁內力計算與配筋  ………………………………………………………………………… 4
 2.1 主梁截面幾何特性的計算  ……………………………………………………………… 4
 2.2 主梁恒載內力計算  ……………………………………………………………………… 5
 2.3 主梁活載內力計算  ……………………………………………………………………… 7
 3. 截面設計   ………………………………………………………………………………… 11
 3.1 預應力鋼束數量的確定及布置……………………………………………………………11
 3.2 截面幾何特性計算 ……………………………………………………………………… 13
 3.3 截面承載能力極限狀態計算 …………………………………………………………… 17
 3.4 預應力損失計算 ………………………………………………………………………… 19
 3.5 正常使用極限狀態計算 ………………………………………………………………… 21
 3.6 持久狀況應力計算 ……………………………………………………………………… 24
 3.7 短暫狀態應力驗算 ……………………………………………………………………… 25
   4. 錨固端驗算……………………………………………………………………………………26
 4.1混凝土的局部承壓承載力………………………………………………………………… 26
 5. 橫隔梁內力計算 …………………………………………………………………………… 27
 5.1 計算荷載……………………………………………………………………………………27
 5.2 橫隔梁內力影響線 ……………………………………………………………………… 27
 5.3 橫隔梁配筋 ……………………………………………………………………………… 28
   6. 支座的選定 ………………………………………………………………………………… 29 
 6.1 確定支座平面尺寸…………………………………………………………………………29
 6.2 確定支座的厚度……………………………………………………………………………29
 
 6.3 驗算支座的偏轉情況………………………………………………………………………29
 6.4 驗算支座的抗滑穩定性……………………………………………………………………30
 第二部分     下部結構的計算
 1. 設計資料  ……………………………………………………………………………………  31
 2. 蓋梁計算 ……………………………………………………………………………………… 31
 2.1 荷載計算…………………………………………………………………………………… 31
 2.2 內力計算   ……………………………………………………………………………… 35
 2.3 截面配筋設計與承載力效核……………………………………………………………… 38
 3. 橋墩墩柱計算……………………………………………………………………………………40
 3.1 荷載計算…………………………………………………………………………………… 40
 3.2 截面配筋計算及應力驗算………………………………………………………………… 41
 4. 鉆孔灌注樁計算………………………………………………………………………………  41
 4.1 荷載計算…………………………………………………………………………………… 41
 4.2 樁長計算…………………………………………………………………………………… 42
 4.3樁的內力及變位置計算  ………………………………………………………………… 43
 4.4 樁身截面配筋與強度驗算  ……………………………………………………………… 44
 4.5 墩頂縱向水平位移驗算  ………………………………………………………………… 45
 第三部分    施工方案與概預算設計……………………………………………………………  46
 1工程概況 ……………………………………………………………………………………  46
 2總體施工方案 ………………………………………………………………………………  46
 3施工方法 ……………………………………………………………………………………  46
    4概預算
 結束語
 參考文獻
 謝辭
 附錄（設計圖紙）

摘   要
 
 巴嘎吉林郭勒橋初步設計為20的預應力混凝土簡支箱形梁橋。該橋采用兩車道布置。上部為裝配式部分預應力混凝土簡支箱梁。預制箱梁高1.2，主梁間距2.9。為降低主梁高度，減少預應力引起的上拱度，后張法預應力混凝土箱梁在設計荷載下按部分預應力混凝土A類構件設計，主梁配筋采用預應力筋和非預應力筋混合配筋。錨具采用OVM15—5型錨具，錨具變形鋼筋回縮按4計。預制件在張拉鋼絞線時混凝土的強度應達到85%以上方可張拉。下部橋墩為鋼筋混凝土圓形雙柱式墩，墩柱直徑1.2；橋墩基礎為單排雙列鉆孔灌注樁基礎，樁徑1.4。橋墩蓋梁為連續墩蓋梁，按簡支梁計算蓋梁內力及墩柱頂豎向反力。樁基采用為單排樁形式，間距6.7。
 
關  鍵  詞

下部結構       后張法      錨固      預應力混凝土       
  
 Abstract
 
 The program of  Guole  Bridge from Baga to Jilin county preliminary design for 20m pre-stressed concrete free supported box girder bridge. This bridge has Two driveway. The upside of bridge is the type of assembly partial prestressed reinforcement concrete simple underprop box girder. Prefabricating box girder has the tallness of 1.2m, the girder’s span length is 2.90m. In order to reduce the girder’s tallness, reduce the superior camber which the pre-stressed causes, the post tenioning pre-stressed concrete box girder under the designed load is designed according to the partical pre-stressed concrete A member, the girder adopt the mixed complex of the pre-stressed reinforcing steel bar and the non-pre-stressed reinforcing steel bar. The anchorage uses the OVM15-5 anchorage, the anchorage’s distortion and reinforcing steel bar’s shrinkage is according to the length of 4㎜. Pre-workpiece when pull the steel wring wire, the reinforcing steel bar can be tension until the concrete tensive intensity should only achieve above 85%. The pier of the bridge’s Infrastructure is the reinforced concrete circular distyle pillar, foot stall’s diameter is 1.2m; Pier’s bedrock for single line double row drill hole irrigation pile foundation, stake’s diameter is 1.4m. Bridge pier plate girder is continual pier plate girder which calculates plate pier’s internal force and the pier’s top vertical force according to the simple beam. Pile foundation use the single piling form, span 6.7m.
 
 Keywords
 
 Substructure   Post tensioning concrete     Anchorage        Prestressed concrete