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樁號 51+ 51+ 51+ 51+ 51+ 標高 內蒙古大學本科畢業(yè)論文(設計) 第 2 頁 由于該河段有人工修筑的河堤,破壞了原有的攤槽,于是根據(jù)河堤內部的樁號及標高計算國稅面積及睡眠寬 度。故屬于次穩(wěn)定河段。汛期多 為七、八級風,風速為 17m/s,風壓 ,河流現(xiàn)象不嚴重,無流木和較大漂浮物,無航道和無抗震要求 ( 8) 該河為季節(jié)性河流,洪水時波浪推進長度為 200m, 此段水深與橋位處基本相同,該地區(qū)標準凍深為 ( 9)雨季在 9 月份 河段類型判斷 此河段位于河流下游平坦地帶,河流比降平緩,泥沙落淤,有廣闊的沖積層。 Finally, start the calculation of bottom structure, infrastructure is to the upper structure load transfer to the foundation, and resist the role of adverse external conditions, these is a function of the lower structure, it mainly manifests the calculation on cap beam, pier column and pile foundation, the selected here for the single row, double column bored pile foundation, the calculation of the selection for the calculation of bridge piers. Bridge as a whole, each part is crucial for the quality of the bridge, cut can not be taken 。s leading achievements in some areas, the bridge construction of our country to some extent represents the world bridge technology development direction. Running of the bridge construction in China with the goal of building a high standard, high starting point, believe that these will be to a higher level of bridge construction in our country. Here for x river hydrological conditions and the actual requirements of highway design, according to relevant national laws and regulations, for the design. This design for mainly for the following three aspects, first is the calculation of hydrology section, it is in view of the existing data, determination of bridge length, drilled pile of pile length, the determination of bridge deck elevation, etc, this part is the foundation。 橋梁是一個整體,每一部分對于橋梁的質量都是至關重要的,切不可以掉以輕心。 在這里針對 x 河的水文條件和公路設計的實際要求,根據(jù)國家相關的 法律法規(guī),進行本次設計。內蒙古大學本科畢業(yè)論文(設計) 學校代碼 10126 學號 0 分 類 號 密級 本科畢業(yè)論文(設計) 跨 X 河 5X40m 預應力混凝土簡支箱形梁橋設計 學院、系 專業(yè)名稱 年 級 學生姓名 指導教師 年 月 日 內蒙古大學本科畢業(yè)論文(設計) 摘要 我國的橋梁無論在建設還是在技術都已經(jīng)取得了巨大的成就,在各類橋型上我國都已經(jīng)建成具有代表性的橋梁,并且在某些領域已經(jīng)取得世界領先的成就,我國的橋梁建設在某種程度上代表著世界橋梁技術發(fā)展方向。我國橋梁建設奔著“高標準、高起點”的目標,相信這些會將我國橋梁建設推向更高的水平。本次設計針對主要針對如下三方面進行,首先是水文部分的計算,它是針對已有資料,就確定橋長、鉆孔樁的樁長、橋面標高等方面的確定,這是基礎部分;然后就計算出的橋凈長,通過方案比選選擇出合適的橋梁形式和橋梁截面,由此進入上部結構計算,這里是本設計最為核心所在,不僅表現(xiàn)在耗時最長,更多的是表現(xiàn)在對于橋梁整體的重要,包括荷載的計算、預應力鋼筋的布設,預應力鋼筋的預應力損失、梁的驗算、變形驗算、局部錨固驗算、橫隔梁、行車道板以及支座計算,這些都是影響橋梁使用情況的重要計算、驗算環(huán)節(jié),良好的行車條件 和優(yōu)良的橋梁品質都由這些計算控制;最后,開始下部結構的計算,下部結構是將上部結構產(chǎn)生的荷載傳遞給地基,并且抵御各種不利的外界條件的作用,這些是下部結構的作用,這里主要體現(xiàn)出的計算集中在蓋梁、墩柱和樁基礎上,在這里所選取的為單排雙柱鉆孔灌注樁基礎,計算選取的為對橋墩的計算。 關鍵詞 : 荷載組合、預應力、驗算、規(guī)范 內蒙古大學本科畢業(yè)論文(設計) Prestressed concrete simply supported box Girder Bridge Author: TongLaGa Tutor: Wang ZhiYuan Abstract Bridges in our country both in construction and in technology have made great achievement, on the various types of bridge are of typical bridge has been built in our country, and has the world39。 And then calculate the long of the bridge, through scheme parison choose the appropriate form of bridge and bridge section, entering into the upper structure calculation, here is the most core, the design not only on the longest, is more of a bridge for the overall performance is important, including load calculation, prestressed reinforced the construction of prestressed loss of prestress, beam calculation and deformation calculation, local anchorage calculation, horizontal isolation beam, driving but as well as the calculation of the usage of these are affect the bridge important calculation, checking calculation of link, the bridge of good driving conditions and good quality are controlled by these calculations。 Key words: Load bination, prestressed, checking calculation and specification 內蒙古大學本科畢業(yè)論文(設計) 目錄 第一部分 水文部分計算 ........................................ 1 河水文設計原始資料及計算 ................................... 1 設計原始資料 .............................................. 1 河段類型判斷 ................................................. 1 設計流量 .與設計流速的計算 .................................... 1 橋孔長度計算 ................................................. 4 計算橋面標高 ................................................. 4 沖刷計算 ..................................................... 6 方案比選 ..................................................... 8 第二部分 上部結構計算 ........................................ 9 ......................................... 9 設計資料 ..................................................... 9 橋梁寬度及橋寬 ......................................... 9 設計荷載 ............................................... 9 材料及工藝 ............................................. 9 設計依據(jù) .............................................. 10 箱型梁構造形式及相關設計參數(shù) .......................... 10 .......................................... 16 永久作用效應計算(按邊主梁計算) ............................ 16 永久作用集度 .......................................... 16 永久作用效應 .......................................... 17 可變作用計算效應值 .......................................... 18 沖擊系數(shù)和車道折減系數(shù)計算 ............................ 18 計算主梁的荷載橫向分布系數(shù) ............................ 19 .......................................... 23 可變作用計算效應 ...................................... 23 主梁作用效應組合 ............................................ 27 ................................... 29 預應力鋼束數(shù)量的估算 ........................................ 29 按正常使用極限狀態(tài)的應力要求估算鋼束數(shù) ................ 29 按承載能力極限狀態(tài)估算鋼束數(shù) .......................... 30 預應力鋼束布置 .............................................. 30 跨中截面及錨固端截面的鋼束位置 ........................ 30 鋼束彎起角度及線形的確定 .............................. 32 鋼束計算 ........................