本文選題：大跨度鋼桁架橋梁 + 抗震性能�。� 參考：《河北工程大學(xué)》2014年碩士論文

【摘要】：橋梁是鐵路工程、抗震防災(zāi)、危機(jī)管理系統(tǒng)重要組成部分，在抗震救災(zāi)中有很重要的位置。為了減少地震災(zāi)害形成的破壞，不僅要對橋梁做好抗震加固措施，也要在橋梁設(shè)計(jì)上采取相應(yīng)措施以滿足抗震要求，提高橋梁的抗震能力，因此對響應(yīng)的橋梁地震響應(yīng)分析是必要的。 本文通過查閱相關(guān)文獻(xiàn)，對橋梁抗震的現(xiàn)狀、問題等作了分析總結(jié)，并且采用大型通用軟件ANSYS軟件對一個(gè)大跨度鋼桁架橋進(jìn)行了地震響應(yīng)分析，得出大跨度鋼桁橋的動(dòng)力特性和該橋體系的一些抗震性能，為以后進(jìn)一步研究打下基礎(chǔ)。具體包括以下幾個(gè)方面： （1）通過查閱資料，闡述了對橋梁進(jìn)行抗震性能分析的現(xiàn)狀，存在問題，，以及對橋梁的減輕震害的一些設(shè)計(jì)思想，并總結(jié)了有關(guān)抗震性能分析的相關(guān)理論，為后期進(jìn)行橋梁結(jié)構(gòu)的抗震分析作基礎(chǔ)。 （2）采用有限元軟件ANSYS對一個(gè)實(shí)例工程大跨度鋼桁架橋進(jìn)行模態(tài)分析，得到了橋梁結(jié)構(gòu)的自振頻率和振型圖，分析研究得到了其有關(guān)振動(dòng)特性。 （3）采用有限元軟件ANSYS對大跨度鋼桁架橋進(jìn)行地震波的瞬態(tài)分析，研究其分別在三種不同作用下該橋的抗震性能。通過分析研究，得到了橋梁跨中控制截面上下節(jié)點(diǎn)的位移響應(yīng)曲線圖，以及位移峰值，對其進(jìn)行對比分析，得出該橋體系的一些抗震性能，為后期抗震設(shè)計(jì)提供一些參考。
[Abstract]:Bridge is an important part of railway engineering, earthquake resistant and disaster prevention and crisis management system. It has a very important position in earthquake relief. In order to reduce the damage caused by earthquake disaster, not only should the bridge be reinforced, but also the bridge design should be taken to fill the seismic requirements and improve the seismic capacity of the bridge, so the response of the bridge is improved. It is necessary to analyze the seismic response of the bridge.
In this paper, through consulting relevant literature, the present situation and problems of bridge earthquake resistance are analyzed and summarized, and the seismic response analysis of a large span steel truss bridge is carried out by large scale general software ANSYS software, and the dynamic characteristics of the long-span steel truss bridge and some seismic performance of the bridge system are obtained, which will lay a foundation for further research. The body includes the following aspects:
(1) through the reference data, this paper expounds the present situation of the seismic performance analysis of the bridge, the existing problems, and some design ideas for the bridge mitigation of earthquake damage, and summarizes the related theories about the seismic performance analysis, which is the basis for the seismic analysis of the bridge structures in the later period.
(2) the finite element software ANSYS is used to analyze the modal analysis of a large span steel truss bridge with an example project. The vibration frequency and vibration pattern of the bridge structure are obtained, and the related vibration characteristics are obtained by the analysis and research.
(3) the seismic wave transient analysis of the long-span steel truss bridge is carried out by the finite element software ANSYS, and the seismic performance of the bridge is studied under three different effects. The displacement response curves of the upper and lower section of the bridge cross section and the peak shift peak are obtained through the analysis and study. The comparison analysis is made to the bridge system and the bridge system is obtained. Some seismic performance provides some references for later seismic design.

【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 朱昱,馮啟民;相位差譜的分布特征和人造地震動(dòng)[J];地震工程與工程振動(dòng);1992年01期

2 黃福偉,許曉鋒,鄭萬山;橋梁抗震加固技術(shù)現(xiàn)狀及發(fā)展趨勢[J];公路交通技術(shù);2003年05期

3 周勇;;橋梁抗震分析方法綜述[J];甘肅科技;2006年04期

4 李軍;;斜拉橋Ansys結(jié)構(gòu)動(dòng)力特性分析[J];甘肅科技;2011年10期

5 趙淳;楊朝暉;;橋梁抗震分析方法研究[J];現(xiàn)代商貿(mào)工業(yè);2009年01期

6 李水長;王海搏;;大跨度桁架斜拉橋的地震時(shí)程分析研究[J];公路與汽運(yùn);2013年05期

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