發(fā)布時(shí)間：2018-07-09 21:16

  本文選題：矩形鋼管混凝土 + 組合桁架��； 參考：《長(zhǎng)安大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)交通事業(yè)的不斷發(fā)展,對(duì)能滿足大跨、重載交通要求的橋梁結(jié)構(gòu)形式的需求越來(lái)越迫切,組合結(jié)構(gòu)中的矩形鋼管混凝土組合桁架結(jié)構(gòu)作為一種新型組合結(jié)構(gòu)形式,在經(jīng)濟(jì)指標(biāo)、抗震性能等方面存在一定優(yōu)勢(shì),因此在橋梁中的應(yīng)用前景廣闊。本文基于三肢型斷面,對(duì)矩形鋼管混凝土組合桁架連續(xù)梁橋展開應(yīng)用研究,論文主要完成的工作有:1)論述了組合結(jié)構(gòu)橋梁的國(guó)、內(nèi)外發(fā)展概況以及鋼管混凝土結(jié)構(gòu)在各種橋型中的國(guó)內(nèi)應(yīng)用概況。2)歸納了組合桁架的相關(guān)構(gòu)造,重點(diǎn)提出了弦桿與橋面板的幾種構(gòu)造設(shè)計(jì),并總結(jié)了組合桁架總體承載力、構(gòu)件承載力以及節(jié)點(diǎn)承載力的相關(guān)計(jì)算方法。3)闡述了組合桁架力流傳遞模式,提出了鋼管分級(jí)設(shè)計(jì)思想,對(duì)腹桿布置形式、腹桿傾斜角度、高跨比、主桁片數(shù)等影響組合桁架經(jīng)濟(jì)指標(biāo)和力學(xué)性能的相關(guān)參數(shù)進(jìn)行了有限元分析。4)依托實(shí)際工程背景,對(duì)等跨徑矩形鋼管混凝土組合桁架連續(xù)梁橋進(jìn)行了試設(shè)計(jì)。5)相比傳統(tǒng)混凝土梁橋,矩形鋼管混凝土組合桁架連續(xù)梁在技術(shù)經(jīng)濟(jì)、力學(xué)性能方面優(yōu)勢(shì)明顯,在橋梁建設(shè)中應(yīng)用前景必將廣闊。
[Abstract]:With the continuous development of transportation in China, it is more and more urgent to meet the requirements of long-span and heavy-haul bridges. The composite truss structure of concrete filled rectangular steel tube (CFST) in composite structure is a new type of composite structure. There are some advantages in economic index, seismic performance and so on, so it has a broad application prospect in bridge. Based on the three-limb section, the application of rectangular concrete-filled steel tube composite truss continuous beam bridge is studied in this paper. The main work accomplished in this paper is: 1) the state of composite structure bridge is discussed. The internal and external development and the domestic application of concrete-filled steel tube (CFST) structure in various bridges are summarized. The related structures of composite truss are summarized, and several structural designs of chord and deck slabs are put forward, and the overall bearing capacity of composite truss is summarized. This paper expounds the force flow transfer mode of composite truss, and puts forward the design idea of steel pipe grading, including the form of web bar, the angle of web bar, the ratio of height to span, and the method of calculating bearing capacity and joint bearing capacity of composite truss. Based on the actual engineering background, the main truss number and other related parameters affecting the economic index and mechanical performance of composite truss are analyzed by finite element method (4). Compared with the traditional concrete girder bridge, the rectangular steel tubular concrete composite truss continuous beam has obvious advantages in technical economy and mechanical properties. The application prospect in bridge construction will be broad.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U448.215

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 武旭升;彭育芬;張曉飛;;干海子大橋非標(biāo)準(zhǔn)尺寸管徑鋼管現(xiàn)場(chǎng)卷制技術(shù)[J];鐵道建筑技術(shù);2010年09期

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本文編號(hào)：2110684