【正文】 ......................67 計算 由預(yù)加力引起的跨中反拱度 .............................................68 計算由荷載引起的跨中撓度 .....................................................73 結(jié)構(gòu)剛度驗算 ..............................................................................73 預(yù)拱度的 設(shè)置 ..............................................................................73 橫隔梁計算 .........................................................................................74 確定作用在跨中橫隔梁上的可變作用 .....................................74 跨中橫隔梁的作用效應(yīng)影響線 .................................................74 截面作用效應(yīng)計算 ......................................................................77 截面配筋計算 ..............................................................................79 行車道板的計算 ...............................................................................79 懸臂板荷載效應(yīng)計算 .................................................................79 連續(xù)板荷載效應(yīng)計算 .................................................................81 截面設(shè)計，配筋與承載力驗算 ................................................84 支座計算 ...........................................................................................85 選定支座的平面尺寸 ..................................................................85 確定支座的厚度 ..........................................................................86 V 驗算支座的偏轉(zhuǎn) ......................................................................... 86 驗算支座的抗滑穩(wěn)定性 ............................................................. 87 第 3 章 橋梁下部結(jié)構(gòu)及基礎(chǔ)計算 .................................................................. 89 下部結(jié)構(gòu)及基礎(chǔ)布置 ........................................................................ 89 設(shè)計標(biāo)準(zhǔn)及上部構(gòu)造 .................................................................. 89 水文地質(zhì)條件 .............................................................................. 89 材料 .............................................................................................. 89 設(shè)計依據(jù) ...................................................................................... 90 蓋梁計算 ............................................................................................ 90 荷載計算 ...................................................................................... 90 內(nèi)力計算 ..................................................................................... 98 截面配筋設(shè)計與承載力校核 .................................................. 101 橋墩墩柱設(shè)計 .................................................................................. 103 荷載計算 ................................................................................... 104 截面配筋設(shè)計及應(yīng)力驗算 ....................................................... 106 鉆孔樁設(shè)計 ...................................................................................... 108 荷載計算 ................................................................................... 108 樁長計算 ....................................................................................110 樁的內(nèi)力計算（ m 法） ............................................................ 111 樁身截面配筋與承載力驗算 ...................................................113 墩頂縱向水平位移驗算 ............................................................114 第 4 章 工程造價文件 .....................................................................................117 基本材料 ...........................................................................................117 計算結(jié)果 ...........................................................................................117 結(jié)論 .................................................................................................................. 123 參考文獻 .......................................................................................................... 124 致謝 .................................................................................................................. 125 第 1 章 緒論 1 第 1 章 緒論 課題 性質(zhì) 畢業(yè)設(shè)計是土木工程專業(yè)本科培養(yǎng)計劃中最后的一個主要教學(xué)環(huán)節(jié)，也是最重要的綜合性實踐教學(xué)環(huán)節(jié)，目的是通過畢業(yè)設(shè)計這一時間較長的教學(xué)環(huán)節(jié)，培養(yǎng)土木工程專業(yè)本科畢業(yè)生綜合應(yīng)用所學(xué)基礎(chǔ)課、技術(shù)基礎(chǔ)課及專業(yè)課知識和相關(guān)技能，解 決具體問題的土木工程設(shè)計問題所需的綜合能力和創(chuàng)新能力。 bridge pier Gravity abutment。 關(guān)鍵詞 預(yù)應(yīng)力混凝土 ； 簡支 T 梁 ； 橋梁墩臺 ； 鉆孔灌注樁 ； 杠桿原理 II Abstract The design is about a reinforce concrete simply supported gieder bridge, what has five bridge deck slab’s breadth is 11+2 meter ,The clearance under bridge superstructure is 4meter and each span to 40 design is posed of three parts as follows,the design of deck all of the factors,we design the prestressed bridge Tsimple prestressed bridge has mang good qualities,such as it has small weight when installed, it is very simply when not use so much is suitable for the small bridge deck slab is posed of 7 Tsimple beams,and the hollow slab wideth, heigh and the load is not that imposedon the bridge are as follows:constructuregravity prestressingsoil gravity,concretestructure’sshrinkage and creep that casued influence force,the car load and iMPact force,trailer load pedestrian load and lateral earth basic principle is that we neglect the link effect of the transversal constraction between the main supposed the bridge deck slab as simplysupported girder that is supported on the main draw the influence line that which point is the most adverse,from witch we can know the transverse load foundation ‘s sedimentation,to ensure it suit to the require of the bridge’s underside structure is installed under the foundation soil,it’s main use is to support the upside structure and transfer the load from the upside structure to the require of the bridge’sunderside structure is installed under the foundation soil， it’s main use is to spport the upside structure to the foundation,to ensure the safe use of the upside struction. Key Words Reinforce concrete。橋臺采用 雙柱式 橋臺 ， 基礎(chǔ)采用 鉆孔灌注樁 。由蓋梁 柱和灌注樁組成。畫出最不利位置的影響線，據(jù)影響線得到橫向分布系數(shù) M，取最大的橫向分布系數(shù) 作為主梁的控制設(shè)計。作用在橋面上的荷載有結(jié)構(gòu)重力、預(yù)加應(yīng)力、土的重力 ， 混凝土