畢業(yè)設(shè)計(jì)  巴嘎吉林郭勒橋施工圖設(shè)計(jì)（橋面凈空 90+2×15m   公路-Ⅱ級荷載）

摘 要

巴嘎吉林郭勒橋初步設(shè)計(jì)為20 的預(yù)應(yīng)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(yù)應(yīng)力混凝土簡支箱梁。預(yù)制箱梁高1.2 ，主梁間距2.9 。為降低主梁高度，減少預(yù)應(yīng)力引起的上拱度，后張法預(yù)應(yīng)力混凝土箱梁在設(shè)計(jì)荷載下按部分預(yù)應(yīng)力混凝土A類構(gòu)件設(shè)計(jì)，主梁配筋采用預(yù)應(yīng)力筋和非預(yù)應(yīng)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(jì)。預(yù)制件在張拉鋼絞線時(shí)混凝土的強(qiáng)度應(yīng)達(dá)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(chǔ)為單排雙列鉆孔灌注樁基礎(chǔ)，樁徑1.4 。橋墩蓋梁為連續(xù)墩蓋梁，按簡支梁計(jì)算蓋梁內(nèi)力及墩柱頂豎向反力。樁基采用為單排樁形式，間距6.7 。


關(guān) 鍵 詞

下部結(jié)構(gòu) 后張法 錨固 預(yù)應(yīng)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


目 錄
前言 ……………………………………………………………………………………………………1
第一部分 上部結(jié)構(gòu)的計(jì)算
1.行車道板計(jì)算 ……………………………………………………………………………………2
1.1 懸臂板荷載效應(yīng)計(jì)算 ………………………………………………………………………2
1.2 連續(xù)板荷載效應(yīng)計(jì)算 ………………………………………………………………………2
1.3 內(nèi)力組合計(jì)算 ………………………………………………………………………………4
1.4 行車道板配筋 ………………………………………………………………………………4
2.主梁內(nèi)力計(jì)算與配筋 ………………………………………………………………………… 4
2.1 主梁截面幾何特性的計(jì)算 ……………………………………………………………… 4
2.2 主梁恒載內(nèi)力計(jì)算 ……………………………………………………………………… 5
2.3 主梁活載內(nèi)力計(jì)算 ……………………………………………………………………… 7
3. 截面設(shè)計(jì) ………………………………………………………………………………… 11
3.1 預(yù)應(yīng)力鋼束數(shù)量的確定及布置……………………………………………………………11
3.2 截面幾何特性計(jì)算 ……………………………………………………………………… 13
3.3 截面承載能力極限狀態(tài)計(jì)算 …………………………………………………………… 17
3.4 預(yù)應(yīng)力損失計(jì)算 ………………………………………………………………………… 19
3.5 正常使用極限狀態(tài)計(jì)算 ………………………………………………………………… 21
3.6 持久狀況應(yīng)力計(jì)算 ……………………………………………………………………… 24
3.7 短暫狀態(tài)應(yīng)力驗(yàn)算 ……………………………………………………………………… 25
4. 錨固端驗(yàn)算……………………………………………………………………………………26
4.1混凝土的局部承壓承載力………………………………………………………………… 26
5. 橫隔梁內(nèi)力計(jì)算 …………………………………………………………………………… 27
5.1 計(jì)算荷載……………………………………………………………………………………27
5.2 橫隔梁內(nèi)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(yàn)算支座的偏轉(zhuǎn)情況………………………………………………………………………29
6.4 驗(yàn)算支座的抗滑穩(wěn)定性……………………………………………………………………30
第二部分 下部結(jié)構(gòu)的計(jì)算
1. 設(shè)計(jì)資料 …………………………………………………………………………………… 31
2. 蓋梁計(jì)算 ………………………………………�..