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150m連續預制箱梁設計+CAD圖紙

時間:2019-06-16 20:30來源:畢業論文
畢業設計主要是關于小跨度預應力混凝土連續梁橋上部結構的設計。上部構造的計算擬定箱梁截面,對5×30m跨徑進行了很詳細的單元劃分,計算恒載內力和活載內力

摘要箱梁已經代替T梁成為最流行性的截面,混凝土箱梁具有良好的抗扭剛度可以提升橋梁抵抗偏載的能力。其次箱梁的抗風性能好,能讓橫向風較為流暢的流過結構,防止發生風致振動破壞。預應力混凝土連續梁橋已經成為最富有競爭力的主要橋型之一。本著“安全、經濟、美觀、實用”八字原則。該橋分為5片、5跨,每跨30m,上部結構為連續梁。本橋采用分離式路基,設計時只考慮半面路基的設計。施工方法選為預制箱梁法。36415
根據設計任務要求和設計規范的規定,畢業設計主要是關于小跨度預應力混凝土連續梁橋上部結構的設計。上部構造的計算擬定箱梁截面,對5×30m跨徑進行了很詳細的單元劃分,計算恒載內力和活載內力,全橋均采用MIDAS軟件進行了預應力筋束配筋和應力驗算,且按新規范進行了預應力損失的計算。
畢業論文關鍵詞: 預應力、連續梁、箱梁。
 Abstract Girder has become the most popular cross-section in place of T beam. Torsional stiffness of concrete box girder bridges can enhance the ability to resist partial load.The girder’s Wind performance is good,Which allowing lateral wind flow more smoothly through the structure to prevent wind-induced vibration damage. re-stressed concrete continuous Girder Bridge become one of main bridge types of the most full of competion ability. There are eight beams and five spans, with each span 30m and successive beam in the superstructure. Because of this bridge adopts the separated Subgrade,design only consider half of the subgrade design.The construction takes the method of precast box beam.
源`自*六:維.論^文'網www.aftnzs.live

According to the requirements and the standards of the design assignment, the graduate design is mainly about the design of superstructure of short-span pre-stressed concrete continuous box Girder Bridge .The calculation of the superstructure is carried out with a supposed section of the box beam, unit pision is done in detail on the 5×30m span to calculate the internal force of live loads and dead loads. The MIDAS has been applied during the calculation of the prestressing steel and the force, and the prestressing loss has been calculated referred to the new standards.
Keywords:Prestressing steel  Continuous beam  Girder
目錄
1、緒論    1
1.1、預應力混凝土連續梁橋概述    1
1.2  畢業設計的目的與意義    3
2、設計資料    4
2.1、橋梁概況    4
2.2 設計參數    4
2.3、材料    4
2.4設計參數    5
2.5設計標準及設計規范    6
3、模型建立與分析    7
3.1、計算模型    7
3.2、截面特性及有效寬度    8
3.3、主梁分段與施工階段的劃分    11
4、荷載內力計算    12
4.1、恒荷載計算    12
4.1.1、一期恒荷載    12
4.1.2、二期恒荷載    12
4.2、恒荷載作用下的內力計算    12
4.2.1、預制階段恒載內力計算    12
4.2.2、二期階段恒載內力計算    15
4.2.3、恒荷載作用下模型總體內力圖    17
4.2、移動荷載作用下的內力計算    19
4.2.1、汽車荷載計算    19
4.2.2、汽車荷載沖擊系數計算    19 源`自*六:維.論^文'網www.aftnzs.live
4.2.3、車道折減系數和橫向分布系數    20
4.2.4、移動荷載引起的內力圖表    20
4.3、支座沉降作用下的內力計算    23
4.4、梯度溫度作用下的內力計算    26 150m連續預制箱梁設計+CAD圖紙:http://www.aftnzs.live/gongcheng/20190616/34853.html
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