【正文】 prestressed and ordinary reinforced steel beam, deformation and stress ponents checked, and then get the result from the bridge Dr. software, and drawing the 華北水利水電學(xué)院設(shè)計(jì)iiiupper part of the structure of the drawings. the lower part of the structure of the bridge use bridge software to calculate and drawings.Key words: bination of internal forces, configuration of reinforced, check. 華北水利水電學(xué)院設(shè)計(jì) I 目錄摘要 ..............................................................iABSTRACT .....................................................................II一、 上部結(jié)構(gòu)毛截面幾何特性計(jì)算 .....................................................1 基本資料 ............................................................1 截面幾何尺寸圖 ......................................................1 毛截面幾何特性計(jì)算 ..................................................5內(nèi)力計(jì)算及組合 .........................................................6 永久作用效應(yīng)計(jì)算 .....................................................6 可變作用效應(yīng)計(jì)算 ....................................................9 作用效應(yīng)組合 .......................................................15預(yù)應(yīng)力鋼束的估算及布置 ................................................19 預(yù)應(yīng)力鋼筋數(shù)量的估算 ................................................19 普通鋼筋的計(jì)算及布置 ...............................................22換算截面幾何特性計(jì)算 ..................................................23 換算截面面積 .......................................................23 換算截面重心的位置 .................................................23 換算截面慣性矩 ......................................................24 換算截面的彈性抵抗矩 ................................................24承載能力極限狀態(tài)計(jì)算 ..................................................25 跨中截面正截面抗彎承載力計(jì)算 ........................................25 斜截面抗剪承載力計(jì)算 ................................................26預(yù)應(yīng)力損失計(jì)算 ........................................................29 摩阻損失 1l?.........................................................29 錨具變形損失 2l....................................................29 分批張拉損失 4l....................................................31 華北水利水電學(xué)院設(shè)計(jì) II 預(yù)應(yīng)力鋼束松弛損失 5l?...............................................32 混凝土收縮、徐變收縮 6l............................................33 預(yù)應(yīng)力損失組合 .....................................................34 安全驗(yàn)算 ..............................................................35 ...................................................36 長(zhǎng)期效應(yīng)組合驗(yàn)算 ...................................................37 變形計(jì)算 ...........................................................38 持久狀況下預(yù)應(yīng)力構(gòu)件標(biāo)準(zhǔn)值效應(yīng)組合應(yīng)力驗(yàn)算 ..........................39 主梁端部的局部承壓演算 ................................................40 局部承壓區(qū)的截面尺寸的演算 .........................................40 局部抗壓承載力驗(yàn)算 .................................................41支座計(jì)算 ..............................................................43 選定支座的平面尺寸 .................................................43 確定支座的厚度 .....................................................43 驗(yàn)算支座的偏轉(zhuǎn) .....................................................44 驗(yàn)算支座的穩(wěn)定性 ...................................................44二、下部結(jié)構(gòu)橋墩蓋梁設(shè)計(jì)與計(jì)算 ...................................................46 內(nèi)力計(jì)算 ...........................................................48 內(nèi)力組合 ..........................................................50 蓋梁配筋 ..........................................................5111 橋臺(tái)蓋梁設(shè)計(jì)與配筋 .....................................................56 內(nèi)力計(jì)算 ..........................................................58 蓋梁配筋 ..........................................................611橋墩樁柱計(jì)算 .........................................................67 截面內(nèi)力計(jì)算與配筋 .................................................68 樁長(zhǎng)計(jì)算 ..........................................................741橋臺(tái)樁柱計(jì)算 .........................................................77 華北水利水電學(xué)院設(shè)計(jì) III 截面內(nèi)力計(jì)算及配筋 ................................................77 樁長(zhǎng)計(jì)算 ..........................................................84附錄 .......................................................................87專(zhuān)業(yè)外文 ...................................................................89專(zhuān)業(yè)外文翻 ................................................................101參考文獻(xiàn) ..................................................................110 華北水利水電學(xué)院設(shè)計(jì)1320m 預(yù)應(yīng)力連續(xù)組合箱梁橋設(shè)計(jì)一、 上部結(jié)構(gòu)毛截面幾何特性計(jì)算 基本資料1. 主要技術(shù)指標(biāo)(1)標(biāo)準(zhǔn)跨徑：320m ；(2)橋梁寬度：＋27m+ ，共 15m；(3)橋梁橫坡：2%；(4)設(shè)計(jì)荷載：公路一級(jí)；(5)環(huán)境類(lèi)別：Ⅰ類(lèi)；(6)設(shè)計(jì)基準(zhǔn)期：100 年；(7)每側(cè)護(hù)欄重量按 6kN/m 計(jì)，混凝土考慮 10 年的收縮徐變，整體升溫、降溫均按20℃考慮，基礎(chǔ)考慮 5mm 不均勻沉降，其它作用根據(jù)設(shè)計(jì)情況擬定。預(yù)應(yīng)力筋：采用 高強(qiáng)度低松弛鋼絞線、抗拉強(qiáng)度標(biāo)注值 MPa，彈S? 1860?pkf性模量 MPa。 截面幾何尺寸圖1. 橋面橫斷面布置圖 華北水利水電學(xué)院設(shè)計(jì)2圖 11 全橋橫斷面圖2. 截面幾何尺寸邊梁跨中截面邊梁支座截面 華北水利水電學(xué)院設(shè)計(jì)32 號(hào)梁跨中截面2 號(hào)梁支座截面 華北水利水電學(xué)院設(shè)計(jì)4 中梁跨中截面 中梁支座截面 華北水利水電學(xué)院設(shè)計(jì)5 毛截面幾何特性計(jì)算表 11 毛截面幾何特性計(jì)算結(jié)果截面位置中梁跨中截面中梁支座截面2 號(hào)梁跨中截面2 號(hào)梁支座截面邊梁跨中截面邊梁支座截面截面形式面積 抗彎慣矩 抗扭慣矩 中性軸高度 華北水利水電學(xué)院設(shè)計(jì)6內(nèi)力計(jì)算及組合 永久作用效應(yīng)計(jì)算1. 梁自重和橫隔梁自重（一期荷載） kN/m1().???? ?? kN/?2. 橋面系自重（二期荷載）橋面鋪裝采等