本文選題：斜拉橋　切入點(diǎn)：非線性時程分析方法　出處：《公路工程》2017年01期 　論文類型：期刊論文

【摘要】：為了確定強(qiáng)震作用下斜拉橋的合理橫向抗震約束體系,以可克達(dá)拉大橋為工程背景,采用非線性時程分析法,分析了4種橫向約束體系即橫向滑動體系、全限位體系、位移相關(guān)型減震體系和速度相關(guān)型減震體系對強(qiáng)震區(qū)大跨度橋梁地震響應(yīng)的影響,重點(diǎn)對鋼阻尼器的屈服荷載和黏滯阻尼器的位置及相關(guān)參數(shù)進(jìn)行優(yōu)化分析,并與其他體系的地震響應(yīng)進(jìn)行了對比。結(jié)果表明:在強(qiáng)震作用下,對于大跨度橋梁,橫向滑動體系和全限位體系均不是理想的抗震體系;而在墩、梁之間設(shè)置減隔震裝置可以顯著減少橫橋向的墩梁相對位移及地震剪力和彎矩;橋塔底的地震剪力和彎矩對減震裝置參數(shù)的變化不敏感。
[Abstract]:In order to determine the reasonable transverse seismic restraint system of cable-stayed bridge under strong earthquake, taking the Cockdara Bridge as the engineering background and using nonlinear time-history analysis, four kinds of transverse restraint systems, namely, transverse sliding system and full limit system, are analyzed. The effect of displacement-dependent damping system and velocity-dependent damping system on seismic response of long-span bridges in strong earthquake region is studied. The yield load of steel damper and the position and relative parameters of viscous damper are optimized and analyzed. The results show that the lateral sliding system and the full-limited system are not ideal seismic systems for long-span bridges under strong earthquake, but in the pier, the seismic response of the system is compared with that of the other systems, and the results show that, under the strong earthquake, the lateral sliding system and the full-limited system are not ideal seismic systems. The relative displacement, seismic shear force and bending moment of the pier beam in the transverse direction of the bridge can be significantly reduced by setting the isolation device between the beams, and the seismic shear force and the bending moment at the bottom of the bridge tower are not sensitive to the variation of the parameters of the shock absorber.
【作者單位】： 西安建筑科技大學(xué)結(jié)構(gòu)工程與抗震教育部重點(diǎn)實驗室;交通部公路科學(xué)研究院;
【基金】：交通運(yùn)輸部西部交通建設(shè)科技項目(20113187721260) 可克達(dá)拉抗震性能研究(2013378)
【分類號】：U448.27
，

本文編號：1639561