本文選題：防屈曲耗能支撐 + 抗震設(shè)計(jì)��； 參考：《長安大學(xué)》2015年碩士論文

【摘要】：橋梁作為交通樞紐的重要組成部分,對經(jīng)濟(jì)發(fā)展和人們出行都有著重要的作用,但一旦發(fā)生地震,將會導(dǎo)致橋梁的破壞,這不僅威脅人們的生命財(cái)產(chǎn)安全,更會影響以后的救災(zāi)工作,而防屈曲耗能支撐裝置作為一種耗能減震裝置,因其顯著的優(yōu)點(diǎn)在建筑領(lǐng)域已經(jīng)得到了廣泛的應(yīng)用。然而在橋梁上的應(yīng)用較少,本文提出將防屈曲耗能支撐裝置安裝在橋梁上,進(jìn)而得出設(shè)置防屈曲耗能支撐裝置的橋梁抗震設(shè)計(jì)方法。本文以3跨等截面連續(xù)梁橋和3跨變截面連續(xù)梁橋?yàn)槔?首先利用有限元軟件Midas分析防屈曲耗能支撐裝置在等截面連續(xù)梁橋上的減震效果,并比較了不同的支撐角度、不同的支撐截面面積、不同的支撐長度、不同地震激勵對減震效果的影響,并通過對以上各因素的分析找出最佳減震方案;其次分析雙柱間設(shè)置人字形支撐形式的防屈曲耗能支撐的地震響應(yīng)情況。然后利用有限元軟件Midas分析防屈曲耗能支撐在變截面連續(xù)梁橋上的減震效果,包括加入防屈曲耗能支撐的減震效果以及不同支撐角度和支撐數(shù)量對減震效果的影響,同時對比不同支撐類型的減震效果。結(jié)果表明:防屈曲耗能支撐滯回曲線飽滿,能夠很好的耗散地震能量,明顯的降低了固定墩以及梁體在地震作用下的受力和位移情況,同時也得出不同的支撐方案對減震效果有著明顯的影響。由于不同的地震激勵作用導(dǎo)致橋梁的響應(yīng)情況不同,所以設(shè)計(jì)人員應(yīng)根據(jù)橋址實(shí)際的地震記錄和地震危險性評定選擇合理的支撐方案,從而得到理想的減震效果。
[Abstract]:As an important part of transportation hub, bridge plays an important role in economic development and people's travel, but once earthquake occurs, it will lead to the destruction of bridge, which not only threatens the safety of people's lives and property. As a kind of energy dissipation device, the anti-buckling energy dissipation support device has been widely used in the field of architecture because of its remarkable advantages. However, there are few applications on the bridge. In this paper, the anti-buckling energy dissipation support device is installed on the bridge, and then the anti-buckling energy dissipation support device is proposed to design the bridge aseismic. Taking three span continuous beam bridge with equal section and three span continuous beam bridge with variable cross section as examples, this paper first uses finite element software Midas to analyze the effect of anti-buckling energy dissipation bracing device on the same section continuous beam bridge, and compares the different supporting angles. The effect of different bracing cross-section area, different bracing length and different earthquake excitation on the shock absorption effect is analyzed, and the best shock absorption scheme is found through the analysis of the above factors. Secondly, the seismic response of the buckling and energy dissipation braces with herringbone bracing between two columns is analyzed. Then using the finite element software Midas to analyze the effect of anti-buckling energy dissipation bracing on the continuous beam bridge with variable section, including the effect of adding anti-buckling energy dissipation bracing, and the influence of different supporting angles and the number of braces on the damping effect. At the same time, the effects of different bracing types are compared. The results show that the hysteretic curve of anti-buckling energy dissipation support is full, and the seismic energy can be dissipated well, and the stress and displacement of fixed pier and beam under earthquake action are obviously reduced. At the same time, it is also found that different support schemes have a significant impact on the shock absorption effect. Due to the different earthquake excitation, the bridge response is different, so the designer should select the reasonable support scheme according to the actual seismic records and seismic risk assessment of the bridge site, and get the ideal seismic absorption effect.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U441.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 高向宇;張慧;杜海燕;梁峰;;組合熱軋角鋼防屈曲支撐構(gòu)造及抗震試驗(yàn)[J];北京工業(yè)大學(xué)學(xué)報;2008年05期

2 唐榮;鄧雪松;周云;;不同寬厚比對三重方鋼管防屈曲耗能支撐性能影響分析[J];鋼結(jié)構(gòu);2011年11期

3 李妍;吳斌;王倩穎;歐進(jìn)萍;;防屈曲鋼支撐阻尼器的試驗(yàn)研究[J];土木工程學(xué)報;2006年07期

4 李鴻光,何旭,孟光;Bouc-Wen滯回系統(tǒng)動力學(xué)特性的仿真研究[J];系統(tǒng)仿真學(xué)報;2004年09期

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本文編號：1868277