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橋梁工程專業(yè)本科畢業(yè)設(shè)計論文-展示頁

2025-07-03 21:45本頁面
  

【正文】 .........................17 支座沉降 .......................................................18 移動荷載 .......................................................19 荷載工況組合 ........................................................20 運行分析 ............................................................21北京交通大學(xué)畢業(yè)設(shè)計(論文) 目錄iv6 預(yù)應(yīng)力鋼筋計算及布置 ................................................................................................23 控制截面選取及截面特性計算 .........................................23 預(yù)應(yīng)力筋配筋計算和布置 .............................................24 鋼預(yù)應(yīng)力配筋計算 ...............................................24 預(yù)應(yīng)力鋼束布置 .................................................27 預(yù)應(yīng)力損失計算 .....................................................287 梁體驗算 ......................................................................................................................34 承載能力極限狀態(tài)驗算 ...............................................34 正截面抗彎驗算 .................................................34 斜截面抗剪驗算 .................................................36 正常使用極限狀態(tài)驗算 ...............................................38 抗裂驗算 .......................................................38 受 拉 區(qū) 鋼 絞 線 最 大 拉 應(yīng) 力 驗 算 ...................................40 正 截 面 混 凝 土 最 大 壓 應(yīng) 力 驗 算 ..................................428 施工方法流程簡要介紹 ................................................................................................469 結(jié)論 ...............................................................................................................................47參考文獻 ..........................................................................................................................48致 謝 ..........................................................................................................................49聲 明 ..........................................................................................................................50附 錄 ..........................................................................................................................51北京交通大學(xué)畢業(yè)設(shè)計(論文) 正文11 引言橋梁是交通的重要設(shè)施之一,是跨越山溝、河流、道路、海峽和海灣的大型結(jié)構(gòu)工程,在公路、鐵路、城市和農(nóng)村道路以及水利等工程建設(shè)中,往往成為全線通車的關(guān)鍵。 the cantilever method。 MIDAS. Reinforcement calculationKEYWORDS:urban high way bridge 。 Prestressed concrete continuous girder bridge。(4) 依據(jù)設(shè)計規(guī)范對主梁關(guān)鍵截面進行強度檢算和抗裂性檢算,并繪制相關(guān)圖紙。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,同時結(jié)合一定的工程實際,對其進行初步布置。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)計方案,初步擬定所研究和設(shè)計的剛構(gòu)橋的主梁截面尺寸。此外, 墩梁固結(jié)在一定程度上避免了大噸位支座設(shè)計與制造的困難。(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(論文) 中文摘要i中文摘要摘要:連續(xù)剛構(gòu)的結(jié)構(gòu)特點是將連續(xù)梁的橋墩與梁部固結(jié), 從而減小支座處的負彎矩和增強結(jié)構(gòu)的整體性。本科畢業(yè)設(shè)計330m連續(xù)剛構(gòu)橋設(shè)計 Design of 330m Continuous RigidFrame Bridge學(xué) 院: 專 業(yè): 學(xué)生姓名: 學(xué) 號: 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。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)濟性上更為合理。本課設(shè)以茅以升公益橋項目為背景,完成 330m 連續(xù)剛構(gòu)設(shè)計。(2) 應(yīng)用橋梁有限元分析軟件 MIDAS 建立素混凝土橋梁模型,進行荷載組合并對其進行內(nèi)力分析。(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,對各階段進行強度檢算,調(diào)試通過后得到最終合攏后的橋梁模型。關(guān)鍵詞:城市公路;預(yù)應(yīng)力混凝土剛構(gòu)橋; MIDAS;配筋計算北京交通大學(xué)畢業(yè)設(shè)計(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。 The cantilever method。 continuous rigid frame bridge。 MIDAS。熟話說要致富,先修路。尤其對于山嶺地區(qū),橋梁建設(shè)的發(fā)展,將會極大地推動該地區(qū)經(jīng)濟的發(fā)展。這一善舉,得到教育部、住房和城鄉(xiāng)建設(shè)部、交通運輸部、鐵道部、清華大學(xué)等高校和企業(yè)、科研院所的熱情支持,而本課題正是在此背景下所提出的。剛架橋是一種介于梁橋與拱橋之前的結(jié)構(gòu)體系,它是由橋跨結(jié)構(gòu)和墩臺結(jié)構(gòu)整體相連的橋梁。由于梁與柱的剛性連接、梁因柱的抗彎剛度而得到卸載作用,整個體系不僅成為壓彎結(jié)構(gòu),同時也是推力結(jié)構(gòu)。對于連續(xù)剛構(gòu)橋的施工方法,常用的有懸臂施工和滿堂支架兩種。懸臂澆筑法一般的順序是先澆筑完橋墩部分,再從橋墩開始,兩側(cè)對稱進行現(xiàn)澆梁段。但結(jié)合本設(shè)計課題的具體情況來看,滿堂支架的施工方法更加適合。相比之下,滿堂支架的施工方式能夠保證橋梁受力結(jié)構(gòu)在施工階段與成橋階段上的一致。畢業(yè)設(shè)計的目的在于培養(yǎng)學(xué)生的綜合能力,它是土木工程專業(yè)本科培養(yǎng)環(huán)節(jié)最后的北京交通大學(xué)畢業(yè)設(shè)計(論文)
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