【正文】 本科畢業(yè)設(shè)計(jì)330m連續(xù)剛構(gòu)橋設(shè)計(jì) Design of 330m Continuous RigidFrame Bridge學(xué) 院： 專 業(yè)： 學(xué)生姓名： 學(xué) 號(hào)： 指導(dǎo)教師： 2022 年 7 月學(xué)士論文版權(quán)使用授權(quán)書本學(xué)士論文作者完全了解北京交通大學(xué)有關(guān)保留、使用學(xué)士論文的規(guī)定。特授權(quán)北京交通大學(xué)可以將學(xué)士論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進(jìn)行檢索，提供閱覽服務(wù)，并采用影印、縮印或掃描等復(fù)制手段保存、匯編以供查閱和借閱。（保密的學(xué)位論文在解密后適用本授權(quán)說明）學(xué)位論文作者簽名： 指導(dǎo)教師簽名：簽字日期： 年 月 日 簽字日期： 年 月 日北京交通大學(xué)畢業(yè)設(shè)計(jì)（論文） 中文摘要i中文摘要摘要：連續(xù)剛構(gòu)的結(jié)構(gòu)特點(diǎn)是將連續(xù)梁的橋墩與梁部固結(jié), 從而減小支座處的負(fù)彎矩和增強(qiáng)結(jié)構(gòu)的整體性。由于橋墩一般屬于小偏壓構(gòu)件, 故與連續(xù)梁結(jié)構(gòu)的橋墩相比配筋不會(huì)增加很多, 而梁體受力則更為合理 , 因而在同等條件下連續(xù)剛構(gòu)要比連續(xù)梁在經(jīng)濟(jì)性上更為合理。此外, 墩梁固結(jié)在一定程度上避免了大噸位支座設(shè)計(jì)與制造的困難。本課設(shè)以茅以升公益橋項(xiàng)目為背景，完成 330m 連續(xù)剛構(gòu)設(shè)計(jì)。主要研究內(nèi)容包括： (1) 通過參考國內(nèi)外城市公路規(guī)范及類似跨度橋梁設(shè)計(jì)方案，初步擬定所研究和設(shè)計(jì)的剛構(gòu)橋的主梁截面尺寸。(2) 應(yīng)用橋梁有限元分析軟件 MIDAS 建立素混凝土橋梁模型，進(jìn)行荷載組合并對(duì)其進(jìn)行內(nèi)力分析。根據(jù)分析結(jié)果估算各截面所需預(yù)應(yīng)力鋼筋的數(shù)目，同時(shí)結(jié)合一定的工程實(shí)際,對(duì)其進(jìn)行初步布置。(3) 應(yīng)用 MIDAS 軟件按懸臂法施工步驟建立包含預(yù)應(yīng)力鋼束的施工階段橋梁模型，對(duì)各階段進(jìn)行強(qiáng)度檢算，調(diào)試通過后得到最終合攏后的橋梁模型。(4) 依據(jù)設(shè)計(jì)規(guī)范對(duì)主梁關(guān)鍵截面進(jìn)行強(qiáng)度檢算和抗裂性檢算，并繪制相關(guān)圖紙。關(guān)鍵詞：城市公路；預(yù)應(yīng)力混凝土剛構(gòu)橋； MIDAS；配筋計(jì)算北京交通大學(xué)畢業(yè)設(shè)計(jì)（論文） 英文摘要iiABSTRACTABSTRACT: Continuous rigid frame is a continuous beam with bridge pier and girder consolidated together, to reduce the negative bending moment of the support and strengthen the integrity of the structure. Due to the bridge pier is a small eccentric pression member, therefore, pared with continuous beam bridge pier reinforcement does not increase a lot, and the beam body stress is more reasonable, thus under the same conditions of continuous rigid frame continuous beam is more than the economy. In addition, the pier girder consolidation is also to a certain extent, overe the difficulties of large tonnage bearing design and manufacture, also saves pier beam in the process of continuous beam construction temporary rigid fixity, meeting again after adjusting the construction process This subject set by the Mao Yishen Publicbenefit bridge as the background, pletes 3 x 30m continuous rigid frame design. The main research contents include: (1) by reference to design of urban high way bridges specification and bridges of similar span at home and abroad, the research of prestressed concrete continuous girder bridge of girder cross section size is proposed. (2) the application of bridge finite element analysis software MIDAS plain concrete bridge model is established, the load bination and carries on the internal force analysis. According to the analysis results to estimate the cross section required the number of prestressed reinforcement, and carries on the preliminary layout. (3) the application of MIDAS software according to the method of cantilever construction steps include construction of the prestressed steel beam bridge model is established, the intensity is checked, for each phase to be finally closed after debugging through the bridge model. (4) according to the design specifications of main girder strength and crack resistance is checked on the key section is checked, and draw the relevant drawings. Key words: high speed railway。 Prestressed concrete continuous girder bridge。 The cantilever method。 MIDAS. Reinforcement calculationKEYWORDS：urban high way bridge 。 continuous rigid frame bridge。 the cantilever method。 MIDAS。 reinforcement calculation北京交通大學(xué)畢業(yè)設(shè)計(jì)（論文） 目錄iii目 錄中文摘要 .............................................................................................................................IABSTRACT...........................................................................................................................II目 錄 ...........................................................................................................................III1 引言 ................................................................................................................................12 設(shè)計(jì)基本資料 .................................................................................................................3 工程概況 ............................................................3 主要技術(shù)指標(biāo) ....................................................3 材料規(guī)格 ........................................................3 設(shè)計(jì)標(biāo)準(zhǔn)和規(guī)范 ......................................................33 方案比選 ........................................................................................................................4 橋型方案擬定 ........................................................4 連續(xù)剛構(gòu)橋方案 ......................................................5 連續(xù)梁橋方案 ........................................................6 梁拱組合體系橋方案 ..................................................6 方案比較和最優(yōu)方案確定 ..............................................74 結(jié)構(gòu)尺寸擬定 ...............................................................................................................10 截面形式 ...........................................................10 主梁截面高度 .......................................................10 箱梁截面細(xì)部尺寸 ...................................................10 箱梁腹板厚度 ...................................................10 箱梁底板厚度 ...................................................11 箱梁頂板厚度 ...................................................115 MIDAS 模型建立及主梁內(nèi)力分析 ..................................................................................13 模型建立 ...........................................................13 劃分節(jié)點(diǎn)和單元 .................................................13 定義材料和截面特性 .............................................14 定義邊界條件 ...................................................15 荷載定義與添加 .....................................................16 結(jié)構(gòu)自重、二期恒載 .............................................16 整體升降溫 .....................................................17 支座沉降 .......................................................18 移動(dòng)荷載 .......................................................19 荷載工況組合 .................................