本文選題：高速列車 + 制動　； 參考：《鐵道標(biāo)準(zhǔn)設(shè)計》2014年07期

【摘要】：為了研究大跨度連續(xù)剛構(gòu)橋在CRH2型動車組制動力作用下的性能,建立了線路 橋梁有限元分析模型。依據(jù)動車組的制動減速度特性曲線,計算了車體的制動力時程。利用線性插值原理,編程計算了鋼軌各節(jié)點(diǎn)的制動力時程。將軌面各節(jié)點(diǎn)的制動力時程和豎向力時程施加于結(jié)構(gòu),利用Midas有限元軟件進(jìn)行了動力響應(yīng)分析。結(jié)果表明,主梁縱向變形具有累積性;制動力和豎向力聯(lián)合作用下,連續(xù)剛構(gòu)橋的縱向位移普遍較小,墩底縱向彎矩也在規(guī)范靜力取值范圍之內(nèi),表明動車組制動情況下連續(xù)剛構(gòu)橋處于安全狀態(tài)。
[Abstract]:In order to study the performance of long-span continuous rigid frame bridge under the braking force of CRH2 EMU, a finite element analysis model for railway bridge is established. According to the braking deceleration characteristic curve of the EMU, the braking force time history of the vehicle body is calculated. Based on linear interpolation principle, the braking force time history of rail joints is calculated by programming. The braking time history and vertical force time history of rail joints are applied to the structure and the dynamic response is analyzed by Midas finite element software. The results show that the longitudinal deformation of the main beam is cumulative, the longitudinal displacement of the continuous rigid frame bridge is generally small, and the longitudinal moment at the bottom of the pier is also within the range of the standard static force under the combined action of braking force and vertical force. It shows that the continuous rigid frame bridge is in a safe state under the condition of EMU braking.
【作者單位】： 華東交通大學(xué)土木建筑學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51368018) 江西省教育廳資助項(xiàng)目(GJJ13324)
【分類號】：U441.3;U448.23
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本文編號：2111276