本文選題：荷載試驗(yàn)　切入點(diǎn)：橋梁檢測　出處：《西南交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：在橋梁結(jié)構(gòu)中,因其具有結(jié)構(gòu)剛度大,建造方式先進(jìn),造型結(jié)構(gòu)美觀等特點(diǎn),連續(xù)梁常作為城市上跨鐵路的常用橋型。中國作為高速鐵路領(lǐng)域內(nèi)的后起之秀,近年來國內(nèi)高速鐵路迎來了高速的發(fā)展時(shí)期,因鐵路運(yùn)輸具有運(yùn)輸快捷、運(yùn)量大、運(yùn)輸安全地特點(diǎn),實(shí)現(xiàn)了整體跨越式發(fā)展。需要指出的是,鐵路速度的提升對于鐵路安全提出了更加嚴(yán)格的要求。然而當(dāng)鐵路線路靠接城市邊緣時(shí),常與城市道路發(fā)生交叉。通常當(dāng)其他結(jié)構(gòu)與高速鐵路發(fā)生交叉時(shí),優(yōu)先選擇的跨越方案為下穿式,當(dāng)條件不允許時(shí)可選上跨的方式。上跨結(jié)構(gòu)常采用上跨高速鐵路的橋梁結(jié)構(gòu),因此上跨的橋梁結(jié)構(gòu)安全性將直接影響到下穿高速鐵路結(jié)構(gòu)的安全,進(jìn)而影響到整個(gè)高鐵系統(tǒng)的行車安全。本文從安全性角度出發(fā),闡述了上跨高鐵的城市橋梁結(jié)構(gòu)安全性評定內(nèi)容方法等。本文的主要工作內(nèi)容如下:(1)詳細(xì)介紹了橋梁評定的國內(nèi)外的發(fā)展現(xiàn)狀,指出了橋梁檢測評定工作是橋梁工作者必須要加以重視的一項(xiàng)工作內(nèi)容。(2)介紹了橋梁檢測評定所需計(jì)算的理論基礎(chǔ)。針對常見的多跨預(yù)應(yīng)力混凝土連續(xù)箱梁的結(jié)構(gòu),詳細(xì)介紹了該類橋型的構(gòu)造特點(diǎn),并針對跨鐵路的連續(xù)箱梁橋自身的特殊性進(jìn)行了闡述。然后對檢測評定計(jì)算所需的有限元方法進(jìn)行了闡述。(3)對于橋梁的檢測評定工作,其主要內(nèi)容是對待檢橋梁的現(xiàn)場檢測、靜載動(dòng)載試驗(yàn)。本文對上述的三項(xiàng)內(nèi)容進(jìn)行了詳細(xì)的論述。(4)依托實(shí)際工程對橋梁靜動(dòng)載試驗(yàn)的全程進(jìn)行闡述,并對試驗(yàn)結(jié)果進(jìn)行分析處理,最后對待檢橋梁結(jié)構(gòu)進(jìn)行評價(jià)判定。
[Abstract]:In the bridge structure, because of its high stiffness, advanced construction mode and beautiful shape, continuous beam is often used as the bridge type in the city, and China is a rising star in the field of high-speed railway. In recent years, the domestic high-speed railway has ushered in a period of high-speed development. Because of the characteristics of fast transportation, large volume and safe transportation, railway transportation has realized the overall development by leaps and bounds. It should be pointed out that, The improvement of railway speed puts forward more stringent requirements for railway safety. However, when railway lines are aligned to the edge of a city, they often cross with urban roads. Usually, when other structures cross with high-speed railways, The preferred leapfrogging scheme is the underpass mode, which can be chosen when the conditions do not permit. The upper span structure often adopts the bridge structure of the upper span high speed railway. Therefore, the safety of the bridge structure of the upper span will directly affect the safety of the structure of the underpass high-speed railway, and then affect the safety of the whole high-speed railway system. In this paper, the methods of safety assessment of urban bridge structures are described. The main work of this paper is as follows: (1) the development status of bridge assessment at home and abroad is introduced in detail. It is pointed out that bridge inspection and evaluation is a work that must be paid attention to by bridge workers. The theoretical basis of calculation for bridge inspection and evaluation is introduced. The common multi-span prestressed concrete continuous box girder structure is introduced. The structural characteristics of this kind of bridge are introduced in detail, and the particularity of continuous box girder bridge across railway is expounded. The main content of this paper is the field test and static load test of the bridge to be inspected. This paper discusses the above three contents in detail. (4) based on the actual engineering, the whole course of the bridge static and dynamic load test is expounded. The test results are analyzed and processed. Finally, the bridge structure is evaluated and judged.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U447

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 陳海軍;;高速鐵路隧道穿越黃河方案研究[J];國防交通工程與技術(shù);2011年01期

2 王彤;;高速鐵路防災(zāi)安全監(jiān)控系統(tǒng)研究與開發(fā)[J];中國鐵路;2009年08期

3 張傳健;呂國梁;;承受高內(nèi)水壓力的穿黃工程盾構(gòu)隧洞結(jié)構(gòu)型式研究[J];隧道建設(shè);2007年S2期

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本文編號：1611662