【正文】 I 摘要 橋梁位于包頭市固陽縣金山鎮(zhèn)至達(dá)茂旗百靈廟鎮(zhèn)一級(jí)公路 K5+098 處，二相公村附近。河道與路線正交，河床穩(wěn)定，灘槽分明，河道順直，洪水期無漂流物個(gè)泥石流，泄洪順暢；本橋平面線形為直線，與流水方向正交； 橋面橫坡 %。 根據(jù)所給資料擬定了三個(gè)橋型方案，方案一預(yù)應(yīng)力混凝土連續(xù)小箱梁橋，方案二采用預(yù)應(yīng)力混凝土連續(xù) T形梁橋，方案三是預(yù)應(yīng)力混凝土簡(jiǎn)支 T 形梁橋。 通過方案比選，最終選擇方案一：預(yù)應(yīng)力混凝土連續(xù)小箱梁橋?yàn)橥扑]方案，該方案采用等跨常截面連續(xù)梁橋，由四片主梁構(gòu)成，孔徑布置為： 6 50m,橋梁全長(zhǎng) 300m。主梁內(nèi)力計(jì)算采用程序與手算結(jié)合，以相互校核。最終使用的是程序計(jì)算的結(jié)果。內(nèi)力組合完成以后，進(jìn)行預(yù)應(yīng)力筋得估算與配置。預(yù)應(yīng)力鋼束按照均勻、分散且考慮錨具尺寸的原則布置在上、下板以及腹板內(nèi)。完成五種預(yù)應(yīng)力損失計(jì)算完后，進(jìn)行預(yù)應(yīng)力損失組合及有效預(yù)應(yīng)力計(jì)算，在截面強(qiáng)度計(jì)算與驗(yàn)算以及正常使用極限狀態(tài)驗(yàn)算時(shí)只取了特殊截面進(jìn)行計(jì)算，最后進(jìn)行了橋墩及基礎(chǔ)的設(shè)計(jì)、配筋和驗(yàn)算。 橋梁下部結(jié)構(gòu)采用雙柱式墩，基礎(chǔ)采用樁基。本設(shè)計(jì)僅對(duì)一個(gè)橋墩進(jìn)行了配筋及強(qiáng)度驗(yàn)算。 在設(shè)計(jì)過程中，計(jì)算機(jī)的應(yīng)用使一些計(jì)算過程 更加簡(jiǎn)便，同時(shí)提高了對(duì)橋梁大師、橋梁博士等軟件的熟練程度。 關(guān)鍵詞： 預(yù)應(yīng)力；上部結(jié)構(gòu)；下部結(jié)構(gòu)；連續(xù)梁橋；內(nèi)力；內(nèi)力組合； 截面強(qiáng)度； 剛性擴(kuò)大基礎(chǔ)。 II Abstract The Bridge is located in the town of Baotou City, Jinshan County to DaMaoQi solid Bailingmiao K5 +098 at the town highway, the second near the village of channel with the line, the river bed stability, beach slot clear, straight river, a flood of nondrifting objects flow, flood and smooth。 a straight horizontal alignment of the bridge, and the flow direction orthogonal。 deck cross slope of %. According to the data developed by the three bridge program, the program of a small continuous prestressed concrete box girder bridge, prestressed concrete continuous program of two Tshaped girder bridge, Option III is simply supported prestressed concrete Tbeam bridge. Through the program selection, the final choice program: small continuous prestressed concrete box beam bridge to the remended program, which often uses such as crosssection of bridge, constituted by the four main beam, the aperture arrangement is: 6 50m, the whole bridge length 300m. Main beam internal forces calculated using the program bined with the hand count to check each other. Using a program to calculate the final results. Combination of internal forces is plete, the tendon was estimated and configuration. Prestressed steel beam in accordance with the uniform, scattered and arranged to consider the principles of anchorage in the size of the upper and lower plate and the web. After pletion of five prestress loss calculation, the position and the effective prestress prestress loss calculation, calculation and checking the section strength and the limit state checking a special section just take the time to calculate, Finally, a pier and foundation design , reinforcement and checking. [Key word] : prestressed。 Superstructure。 Substructure。 Continuous beam bridge。 Internal Force。 Internal Force bination。 Section strength。 Rigid expanded basis III 目錄 摘要 ................................................................................................................................. I ABSTRACT ...................................................................................................................II 第一章 橋梁結(jié)構(gòu)方案評(píng)選 .......................................................................................... 1 設(shè)計(jì)資料 .............................................................................................................. 1 梁名橋稱 ........................................................................................................ 1 基本資料 ........................................................................................................ 1 設(shè)計(jì)標(biāo)準(zhǔn) ........................................................................................................ 1 方案擬定 .............................................................................................................. 2 第一方案：預(yù)應(yīng)力混泥土連續(xù)箱梁 ............................................................ 2 第二方案：預(yù)應(yīng)力混泥土連續(xù) T 梁 ........................................................... 2 第三方案：預(yù)應(yīng)力混泥土簡(jiǎn)支 T 梁 .......................................................... 3 方案比較 ............................................................................................................. 3 方案選擇 ............................................................................................................. 3 第二章 推薦方案簡(jiǎn)介及結(jié)構(gòu)尺寸擬定 .................................................................... 4 推薦方案簡(jiǎn)介 ...................................................................................................... 4 總跨徑 ............................................................................................................ 4 橋梁分孔 ........................................................................................................ 4 橋梁的標(biāo)高 .................................................................................................... 4 結(jié)構(gòu)尺寸擬定 ...................................................................................................... 4 箱梁截面尺寸擬定 ........................................................................................ 4 橫隔梁尺寸擬定 ........................................................................................... 5 蓋梁、墩柱、鉆孔樁尺寸擬定 ................................................................... 5 橋梁主要材料選用 ....................................................................................... 5 第三章 橋面板計(jì)算 .................................................................................................... 6 行車道板設(shè)計(jì) ..................................................................................................... 6 恒載內(nèi)力 ........................................................................................................ 6 活載內(nèi)力 ........................................................................................................ 6 IV 內(nèi)力組合 ........................................................................................................ 8 ...................................................................................... 8 恒載內(nèi)力 ........................................................................................................ 8 .............................