【摘要】：本文以寧啟復(fù)線電化工程中跨新長(zhǎng)線特大橋?yàn)楸尘?對(duì)跨既有鐵路線特大橋施工工藝進(jìn)行了研究。該橋梁上跨新長(zhǎng)線,由于線路縱坡和鐵路限界因素制約,采用梁體嵌入門式墩蓋梁的結(jié)構(gòu)形式。該結(jié)構(gòu)新穎,國(guó)內(nèi)同類結(jié)構(gòu)施工的經(jīng)驗(yàn)較少。該梁體結(jié)構(gòu)特殊、跨度大,施工中既要保證施工進(jìn)度,又要確保既有線正常運(yùn)營(yíng),施工安全風(fēng)險(xiǎn)非常大。本文通過(guò)對(duì)5種施工方案進(jìn)行科學(xué)的比對(duì)最終確定采用將原來(lái)的跨三股線路優(yōu)化為跨兩股線路,增加道岔的方式優(yōu)化施工。同時(shí)通過(guò)建模分析計(jì)算,確定了鉆孔樁基礎(chǔ)+鋼管立柱+貝雷梁橫梁+H型鋼縱梁的大跨度組合支撐體系,很好地解決了既有運(yùn)營(yíng)線上方搭設(shè)大跨度支架的難題。該支架體系設(shè)計(jì)合理,所有連接均為剛性連接,結(jié)構(gòu)剛度大、強(qiáng)度高、整體性好。在安全方面,本文針對(duì)施工工藝的特點(diǎn)提出H型鋼縱梁上滿鋪方木、竹膠板等安全措施,很好地對(duì)既有運(yùn)營(yíng)線進(jìn)行了防護(hù)。即保證了行車安全,又保證了施工中的人身安全。通過(guò)本工程施工方案的研究和實(shí)施,為相同施工提供了相應(yīng)的資料,對(duì)今后類似工程具有很好的指導(dǎo)意義。
[Abstract]:In this paper, the construction technology of the oversized bridge across the existing railway line is studied under the background of the new long line bridge in the electrical engineering of Ningqi compound Line. Because of the restriction of the longitudinal slope of the bridge and the restriction of the railway boundary, the new long line is built with the beam body embedded in the gate pier and the cover beam. The structure is novel and the construction experience of similar structures in China is less. Because of its special structure and large span, it is necessary to ensure the construction schedule and the normal operation of the existing railway line in the construction, so the construction safety risk is very large. In this paper, through scientific comparison of five construction schemes, it is determined that the original three strands line will be optimized for two strands of lines, and the way of increasing turnout will be optimized. At the same time, through modeling analysis and calculation, the long-span composite bracing system of H-shaped steel longitudinal beam of steel pipe vertical column beam-beam of bored pile foundation is determined, which solves the problem of erecting large-span support over the existing operation line. The design of the support system is reasonable, all the connections are rigid connections, the structure stiffness is high, the strength is high, and the integrity is good. In terms of safety, according to the characteristics of construction technology, this paper puts forward safety measures such as covered square wood and bamboo plywood on H-section steel longitudinal beam, which can protect the existing operation line well. That is, to ensure the safety of driving, but also to ensure the construction of personal safety. Through the research and implementation of the construction scheme of this project, it provides the corresponding data for the same construction, and has a good guiding significance for the similar projects in the future.
【學(xué)位授予單位】：石家莊鐵道大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U445.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李亞楠;楊健輝;魏加志;彭浩;;汾河特大橋預(yù)應(yīng)力混凝土剛構(gòu)連續(xù)梁施工技術(shù)探討[J];鐵道建筑;2013年07期

2 馮獻(xiàn)偉;;連續(xù)鋼構(gòu)橋懸臂施工與控制技術(shù)[J];科技致富向?qū)?2013年20期

3 賴碧望;;連續(xù)鋼構(gòu)橋施工控制技術(shù)分析[J];中國(guó)建筑金屬結(jié)構(gòu);2013年12期

4 楊善奎;袁明;鄢勇;戴勝勇;;鐵路客運(yùn)專線連續(xù)梁-拱組合結(jié)構(gòu)設(shè)計(jì)[J];鐵道工程學(xué)報(bào);2013年02期

5 安寧;;連續(xù)鋼構(gòu)梁橋施工監(jiān)控[J];交通世界(建養(yǎng).機(jī)械);2012年05期

6 胡剛;郭小平;柏峰;王玉林;李京許;;跨線橋施工支架優(yōu)化與設(shè)計(jì)[J];交通科技;2011年03期

7 朱昌岳;;滹沱河特大橋預(yù)應(yīng)力混凝土連續(xù)梁施工線形控制[J];鐵道建筑技術(shù);2010年05期

8 唐云偉;陸永軍;皮勇;;黃陵洞大橋水平轉(zhuǎn)體施工關(guān)鍵技術(shù)研究[J];交通科技;2007年05期

9 陳思孝;岳強(qiáng);;牛角坪雙線特大橋剛構(gòu)-連續(xù)組合梁及連續(xù)剛構(gòu)橋式研究[J];鐵道勘察;2007年S1期

10 張應(yīng)奎;楊成斌;潘星;;橋梁懸臂澆筑施工中的撓度控制分析[J];工程與建設(shè);2006年01期

相關(guān)碩士學(xué)位論文 前1條

1 韓紅春;大跨度預(yù)應(yīng)力混凝土連續(xù)梁橋懸臂施工控制研究與實(shí)踐[D];西南交通大學(xué);2007年

，

本文編號(hào)：2322263