【正文】 程學(xué)院 07 土木（道橋方向 ） 專業(yè) 學(xué)生： 5 人 日期自 2021 年 3 月 7 日 至 2021 年 6 月 13 日 指導(dǎo)教師： 朱娜 助理指導(dǎo)教師 (并指出所負(fù)責(zé)的部分 )： 教研室： 教研室主任： I 摘要 本次設(shè)計(jì)的題目是江西省某新建預(yù)應(yīng)力 T形梁橋施工圖 （ K0+000— K1+）設(shè)計(jì)。and make an overall structure design of the main perform the calculation of the internal force and reinforcing bar on the ,check the intensity,stress and ,check the substructure.. The main points of the design are as the follows. introduce of design。uabutme 目錄 摘要 ........................................................................................................................ I Abstract ................................................................................................................ II 第一章 設(shè)計(jì)說(shuō)明 .............................................................................................. 1 引言 ................................................................................................................................... 1 設(shè)計(jì)任務(wù)書(shū) ....................................................................................................................... 1 題目：江西某新建橋梁施工圖設(shè)計(jì)（ K0+000— K1+） ............................ 1 畢業(yè)設(shè)計(jì)使用的原始資料（數(shù)據(jù)）及設(shè)計(jì)技術(shù)要求 ......................................... 1 第二章 設(shè)計(jì)資料與結(jié)構(gòu)尺寸 ............................................................................ 1 設(shè)計(jì)資料 ........................................................................................................................... 1 橋梁跨徑及橋?qū)? ..................................................................................................... 1 設(shè)計(jì)荷載 ................................................................................................................. 1 材料特性 ................................................................................................................. 1 錨具 ......................................................................................................................... 1 施工工藝 ................................................................................................................. 1 設(shè)計(jì)依據(jù) ................................................................................................................. 1 結(jié)構(gòu)設(shè)計(jì) ........................................................................................................................... 1 主梁間距與主梁片數(shù) ............................................................................................. 1 主梁尺寸擬定 ......................................................................................................... 4 第三章 主梁內(nèi)力計(jì)算 ....................................................................................... 11 恒載內(nèi)力計(jì)算 ................................................................................................................. 11 第一期恒載 ........................................................................................................... 11 二期恒載 ............................................................................................................... 11 第三 期荷載 ........................................................................................................... 11 橫載內(nèi)力計(jì)算 ....................................................................................................... 12 活載內(nèi)力計(jì)算 ................................................................................................................. 16 沖擊系數(shù)和車(chē)道折減系數(shù) ................................................................................... 16 主梁荷載橫向分布系數(shù)計(jì)算 ............................................................................... 16 計(jì)算活載內(nèi)力 ....................................................................................................... 20 第四章 預(yù)應(yīng)力鋼筋面積的估算及其布置 .......................................................... 24 初選鋼束 .......................................................................................................................... 24 估算預(yù)應(yīng)力鋼筋面積 ............................................................................................ 24 構(gòu)造布置要求 ................................................................................................................. 25 確定跨中及錨固端截面的鋼束位置 ................................................................... 25 鋼束的彎起角和線形位置的確定 ................................................................................. 25 鋼束的幾何計(jì)算 ............................................................................................................. 25 力筋長(zhǎng)度計(jì)算 ........................................................................................................ 26 力筋的高度計(jì)算 .................................................................................................... 27 主梁截面幾何特性計(jì)算 .................................................................................................. 28 第五章 承載力極限狀態(tài)設(shè)計(jì) ............................................................................. 32 跨中截面尺寸及配筋情況 ............................................................................................. 32 斜截面承載力計(jì)算 ......................................................................................................... 32 距支點(diǎn) h/2 截面抗剪承載力計(jì)算 ......................................................................... 32 變化點(diǎn)截面抗剪承載力計(jì)算 ................................................................................ 33 第六章 預(yù)應(yīng)力損失計(jì)算 ..................................................................................... 35 摩阻損失 ......................................................................................................................... 35 錨具變形損失 ................................................................................................................. 36 混凝土彈性壓縮引起的預(yù)應(yīng)力損失 ...................................................................