本文選題：波形鋼腹板 + 先簡(jiǎn)支后連續(xù)�。� 參考：《河北工業(yè)大學(xué)》2015年碩士論文

【摘要】：京港澳高速公路改擴(kuò)建保定互通位于施工圖設(shè)計(jì)里程K131+395處,互通內(nèi)設(shè)有9條匝道,本科研依托工程為A匝道跨七一路匝道橋,該橋?yàn)?×25m先簡(jiǎn)支后連續(xù)部分預(yù)應(yīng)力波形鋼腹板鋼箱組合連續(xù)梁結(jié)構(gòu)。波形鋼腹板鋼箱組合梁作為一種新型組合結(jié)構(gòu),充分利用了鋼材抗剪、抗拉能力強(qiáng)和混凝土抗壓能力大的力學(xué)特性,采用波形鋼腹板代替混凝土腹板有效地減輕結(jié)構(gòu)自重。先簡(jiǎn)支后連續(xù)結(jié)構(gòu)體系實(shí)現(xiàn)了橋梁工廠化批量預(yù)制生產(chǎn),減少橋面伸縮縫,保證了橋梁質(zhì)量,滿足現(xiàn)在橋梁建設(shè)以及車輛行駛的要求。本文研究?jī)?nèi)容主要分為四大部分:第一部分為波形鋼腹板組合梁橋的發(fā)展現(xiàn)狀,先簡(jiǎn)支后連續(xù)結(jié)構(gòu)的研究背景、研究現(xiàn)狀以及先簡(jiǎn)支后連續(xù)結(jié)構(gòu)體系的優(yōu)缺點(diǎn)等;第二部分為先簡(jiǎn)支后連續(xù)梁橋的分析理論和方法;第三部分為先簡(jiǎn)支后連續(xù)波形鋼腹板鋼箱組合梁橋成橋狀態(tài)單、雙支座的討論,負(fù)彎矩區(qū)的處理方法優(yōu)化設(shè)計(jì),波形鋼腹板組合箱梁承載能力驗(yàn)算;第四部分為先簡(jiǎn)支后連續(xù)梁橋合理施工順序分析,主要對(duì)后連續(xù)端澆筑順序、臨時(shí)支座拆除順序進(jìn)行分析。本文以4×25m先簡(jiǎn)支后連續(xù)波形鋼腹板箱組合梁橋?yàn)橐劳羞M(jìn)行研究,首先結(jié)合理論分析和Midas Civil模型分析不同荷載工況下單、雙支座主梁受力,提出單支座形式適合本工程實(shí)際;其次負(fù)彎矩區(qū)作為連續(xù)梁的受力薄弱部位在橋梁建設(shè)中應(yīng)進(jìn)行特殊處理,對(duì)強(qiáng)配筋法、支座頂升法、靜載預(yù)壓法三種負(fù)彎矩區(qū)處理方案進(jìn)行優(yōu)化比選,確定強(qiáng)配筋法為最佳方案;然后結(jié)合Ansys有限元模型對(duì)本工程實(shí)橋的承載能力進(jìn)行了驗(yàn)算,驗(yàn)算結(jié)果表明波形鋼腹板組合箱梁橋的整體結(jié)構(gòu)性能良好。最后,利用Midas Civil模型分析后連續(xù)端部不同澆筑順序以及臨時(shí)支座不同拆除順序時(shí)主梁受力,給出最佳施工順序分別是順序澆筑、對(duì)稱拆除。
[Abstract]:Baoding Interchange of Beijing, Hong Kong and Macao Expressway is located at K131 395, where the design mileage of construction drawing is K131 395, and there are 9 ramps in the interworking. The bridge is composed of 4 脳 25m simple supported and then partially prestressed steel web steel box composite beam structure. As a new type of composite structure, the steel box composite beam with corrugated steel webs makes full use of the mechanical properties of steel, such as shear resistance, strong tensile capacity and high compressive capacity of concrete. The use of corrugated steel web plate instead of concrete web plate can effectively reduce the structural weight. The system of simple support and then continuous structure realizes the batch production of the bridge, reduces the expansion joint of the bridge deck, ensures the quality of the bridge, and meets the requirements of the bridge construction and vehicle running. The main contents of this paper are divided into four parts: the first part is the development of the corrugated steel web composite beam bridge, the research background of the simple support and then the continuous structure, the research status and the advantages and disadvantages of the simple support and the continuous structure system, etc. The second part is the analysis theory and method of the simple support and continuous beam bridge, the third part is the discussion of the state of the bridge, the discussion of the double supports and the optimal design of the treatment method of the negative bending moment region. The fourth part is the analysis of the reasonable construction sequence of the first simple support and then the continuous beam bridge, mainly to the sequence of pouring at the back continuous end and the order of removing the temporary support. This paper is based on 4 脳 25m steel web box composite girder bridge with simple support and continuous wave shape. Firstly, combined with theoretical analysis and Midas Civil model, the stress of single and double bearing main beam under different load conditions is analyzed, and the single support form is put forward to suit the actual condition of the project. Secondly, as the weak position of continuous beam, special treatment should be carried out in the construction of bridge, and three kinds of treatment schemes of negative moment region, such as strong reinforcement method, pedestal jacking method and static load preloading method, should be optimized and selected. The method of strong reinforcement is determined as the best scheme, and then combined with the Ansys finite element model, the bearing capacity of the bridge is checked and calculated. The results show that the integral structure performance of the composite box girder bridge with corrugated steel webs is good. Finally, Midas Civil model is used to analyze the stress of the main beam with different pouring sequence of continuous end and different demolition order of temporary support, and the optimal construction order is respectively sequential pouring and symmetrical demolition.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U442.5

【共引文獻(xiàn)】

相關(guān)期刊論文 前3條

1 鄒寒;侯茜茜;;對(duì)箱梁控制節(jié)點(diǎn)及拼裝定位檢測(cè)的分析[J];河南科技;2010年14期

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相關(guān)碩士學(xué)位論文 前6條

1 安井剛;預(yù)應(yīng)力混凝土簡(jiǎn)支轉(zhuǎn)連續(xù)梁橋結(jié)構(gòu)設(shè)計(jì)及分析[D];河北工業(yè)大學(xué);2010年

2 劉國(guó)慧;簡(jiǎn)支變連續(xù)橋梁的設(shè)計(jì)與試驗(yàn)研究[D];天津大學(xué);2006年

3 崔洪海;預(yù)應(yīng)力混凝土簡(jiǎn)支轉(zhuǎn)連續(xù)箱梁設(shè)計(jì)方法與施工工藝研究[D];吉林大學(xué);2008年

4 陽(yáng)東;簡(jiǎn)支連續(xù)梁橋設(shè)計(jì)與施工關(guān)鍵技術(shù)研究[D];重慶交通大學(xué);2009年

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6 曾玨博;簡(jiǎn)支連續(xù)梁橋結(jié)構(gòu)體系轉(zhuǎn)換力學(xué)性能分析[D];重慶交通大學(xué);2013年

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本文編號(hào)：2004991