本文選題：斜拉橋 + MIDAS/Civil��； 參考：《南京航空航天大學(xué)》2014年碩士論文

【摘要】：近年來，隨著國民經(jīng)濟(jì)的迅猛發(fā)展，越來越多的大跨度橋梁相繼投入使用，而斜拉橋是其中最具有競爭力的橋型，漸漸成為了交通運(yùn)輸?shù)囊豁?xiàng)樞紐工程。地震作為一種破壞力極強(qiáng)的自然災(zāi)害，對人們的生命安全造成了極大的威脅，尤其是當(dāng)橋梁受到地震破壞后，帶來的損失就難以想象了。所以為了確保這類橋梁的安全運(yùn)營，對橋梁進(jìn)行系統(tǒng)的地震反應(yīng)分析是十分有必要的。 本文運(yùn)用大型有限元軟件MIDAS/Civil，對上海閔浦二橋進(jìn)行了地震反應(yīng)分析，主要研究內(nèi)容如下： （1）建立了上海閔浦二橋的有限元計(jì)算模型，并對橋梁進(jìn)行了動力特性分析； （2）采用反應(yīng)譜法對橋梁進(jìn)行地震反應(yīng)分析，利用CQC振型組合方法，分別進(jìn)行順橋向、橫橋向、豎向以及兩個(gè)最不利組合下的地震反應(yīng)分析； （3）對上海閔浦二橋進(jìn)行時(shí)程反應(yīng)分析，根據(jù)反應(yīng)譜法得出的初步結(jié)論，在關(guān)鍵部位進(jìn)行三個(gè)獨(dú)立方向以及組合方向的地震反應(yīng)分析，，得出較為準(zhǔn)確的分析結(jié)果，并選取主塔關(guān)鍵部位進(jìn)行抗剪能力驗(yàn)算，校核強(qiáng)度； （4）對閔浦二橋關(guān)鍵的主塔進(jìn)行了橫向pushover靜力彈塑性分析，對其抗震性能作出了一些評估，為實(shí)際工程提供參考。
[Abstract]:In recent years, with the rapid development of national economy, more and more long-span bridges have been put into use, among which cable-stayed bridges are the most competitive type, and gradually become a transportation hub project. Earthquake, as a kind of natural disaster with strong destructive power, poses a great threat to the safety of people's lives, especially when the bridge is damaged by earthquake, the damage caused by it is difficult to imagine. So in order to ensure the safe operation of this kind of bridge, it is necessary to analyze the seismic response of the bridge systematically. In this paper, a large finite element software Midas / Civil is used to analyze the seismic response of Minpu Bridge in Shanghai. The main research contents are as follows: 1) the finite element model of Shanghai Minpu second Bridge is established, and the dynamic characteristics of the bridge are analyzed. (2) using the response spectrum method to analyze the seismic response of the bridge, and using the CQC mode combination method, the seismic response analysis is carried out respectively in the direction of the bridge, the direction of the transverse bridge, the vertical direction and the two most unfavorable combinations. According to the preliminary conclusion of the response spectrum method, the seismic response analysis of three independent directions and the combination direction is carried out at the key position, and the results are more accurate. The key parts of the main tower are selected to check the shear capacity and check the strength. 4) the lateral pushover static elastoplastic analysis of the key main tower of Minpu second Bridge is carried out, and some evaluation of its seismic performance is made, which provides a reference for practical engineering.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55

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本文編號：1866267