本文選題：鋼箱梁 + 抗傾覆穩(wěn)定性�。� 參考：《青島理工大學(xué)》2014年碩士論文

【摘要】：本文以南京雨花臺(tái)區(qū)小行地鐵站附近南京城市快速內(nèi)環(huán)西線南延工程（緯八路-繞城公路）四標(biāo)段，當(dāng)時(shí)在B17-B18鋼箱梁防撞墻施工時(shí)，鋼箱梁發(fā)生傾覆為研究對(duì)象，對(duì)城市高架橋鋼箱梁抗傾覆穩(wěn)定性進(jìn)行研究，，分別從靜力穩(wěn)定和動(dòng)力穩(wěn)定分析計(jì)算鋼箱梁，并進(jìn)行翻落動(dòng)態(tài)模擬。通過(guò)一系列的模擬計(jì)算，得出有三個(gè)方面能夠?qū)е率鹿拾l(fā)生： 一是穩(wěn)定力矩太小這主要是由于橋梁自重太輕引起的，而對(duì)于南京雨花臺(tái)橋梁事故中的鋼橋和內(nèi)蒙古包頭橋梁而言剛度已經(jīng)足夠故沒(méi)有必要再增加鋼材使用量來(lái)增加自重，這會(huì)造成資源的浪費(fèi)。自重輕這也是所有鋼箱梁橋在抗傾覆穩(wěn)定性方面的一大缺點(diǎn)。 二是傾覆力矩太大這主要是由于在同一段路段上的車(chē)輛太多且過(guò)重。近些年來(lái)隨著經(jīng)濟(jì)的飛速發(fā)展各種超大型運(yùn)輸車(chē)適應(yīng)了市場(chǎng)需要而不斷增多，并且這些車(chē)輛的擁有者大多通過(guò)超載來(lái)獲得更大利潤(rùn)。這就導(dǎo)致行駛在橋面上的荷載大大超過(guò)設(shè)計(jì)者設(shè)計(jì)的設(shè)計(jì)荷載。 三是支座間距太小導(dǎo)致穩(wěn)定力臂小而傾覆力臂過(guò)大，這一原因在內(nèi)蒙古包頭市民族東路高架橋事故中尤為突出，這是設(shè)計(jì)不合理造成的。 在對(duì)于高架鋼箱梁抗傾覆設(shè)計(jì)時(shí)，防止事故發(fā)生主要從以下的幾種方式去實(shí)施： 1.從結(jié)構(gòu)體系上采取措施增加橋梁的抗傾覆能力 2.從外界因素來(lái)講盡量減少對(duì)橋梁的不利因素
[Abstract]:In this paper, the fourth section of the south extension project of the west rapid inner ring of Nanjing city near Xiaoxing subway station in Yuhuatai district (weft 8 road-round city highway) was studied. At that time, the steel box girder overturned during the construction of the anti-collision wall of the B17-B18 steel box girder The anti-overturning stability of steel box girder of city viaduct is studied. The static stability and dynamic stability of steel box girder are analyzed and calculated, and the dynamic simulation is carried out. Through a series of simulation calculations, it is concluded that there are three aspects that can lead to an accident: One is that the stability moment is too small, which is mainly caused by the light weight of the bridge. For the steel bridge in the Nanjing Yuhuatai bridge accident and the Baotou bridge in Inner Mongolia, the stiffness is enough, so there is no need to increase the steel usage to increase the self-weight. This will result in a waste of resources. Light weight is also a major drawback of the overturning stability of all steel box girder bridges. The second is that the overturning moment is too large, mainly because there are too many vehicles on the same section of road. In recent years, with the rapid development of economy, a variety of super-large transport vehicles have been increasing to meet the needs of the market, and most of the owners of these vehicles make more profits by overloading. As a result, the load on the bridge deck greatly exceeds the design load designed by the designer. The third is that the support spacing is too small and the overturning arm is too large, which is especially prominent in the accident of Baotou ethnic East Road viaduct in Inner Mongolia, which is caused by unreasonable design. In the anti-overturning design of elevated steel box girders, the prevention of accidents is mainly carried out in the following ways: 1. Measures should be taken from structural system to increase the capsize Resistance of Bridges 2. Minimize the adverse factors to the bridge in terms of external factors
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.36

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 文武松,王邦楣;斜拉橋施工階段監(jiān)測(cè)監(jiān)控的內(nèi)容和方法[J];橋梁建設(shè);1999年04期

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