本文關鍵詞： 多體動力學 有限元方法 多線車橋耦合 聯(lián)合仿真　出處：《西南交通大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著我國高速鐵路建設發(fā)展和交通量需求的增大,近幾年開始出現(xiàn)較多的多線鐵路橋,多線列車與橋梁的動力相互作用問題變得越來越突出,因而進行多線車橋耦合振動的仿真計算及規(guī)律分析成為一種必然的要求。論文以渝黔鐵路白沙沱長江大橋車橋耦合研究為依托,采用有限元軟件ANSYS和多體動力學軟件SIMPACK分別建立了橋梁的動力分析模型和三維空間列車精細化計算模型,本文的主要研究內(nèi)容如下：首先本文對多體動力學理論與橋梁結(jié)構動力學理論進行了介紹,并對車橋空間動力分析的聯(lián)合仿真的實現(xiàn)方法進行了細致的分析和闡述。然后根據(jù)有限元軟件ANSYS所建立的全橋結(jié)構動力分析模型,通過對全橋模型的自振特性進行計算和分析,得出了前10階振型及相應的自振頻率。接著對1號線16節(jié)(CRH3、CRH2)列車、2號線16節(jié)CRH2)列車和5號線貨物列車在不同速度工況下車橋系統(tǒng)的空間振動響應進行了仿真計算,并對車輛以及橋梁的動力學指標進行了評定。最后對6節(jié)三線(1號線+2號線+3號線、1號線+2號線+4號線)CRH3列車在不同速度工況下車橋系統(tǒng)的空間振動響應進行了仿真計算,并將三線列車同時行車時車輛和橋梁的動力學指標與相應單線單獨行車時車輛和橋梁的動力學指標進行對比分析,總結(jié)了三線同時行車與單線單獨行車時車輛與橋梁的各項動力指標之間存在的規(guī)律。
[Abstract]:With the development of high-speed railway construction and the increasing demand of traffic volume, there are more and more multi-line railway bridges in recent years, and the dynamic interaction between multi-line trains and bridges becomes more and more prominent. Therefore, it is an inevitable requirement to simulate and analyze the coupling vibration of multi-track vehicle-bridge. The paper is based on the study of vehicle-bridge coupling of Baishatuo Yangtze River Bridge on Yu-Guizhou Railway. The finite element software ANSYS and the multi-body dynamics software SIMPACK are used to establish the dynamic analysis model of the bridge and the fine calculation model of the three-dimensional space train, respectively. The main contents of this paper are as follows: firstly, the theory of multi-body dynamics and the theory of bridge structure dynamics are introduced. The realization method of joint simulation of vehicle-bridge spatial dynamic analysis is analyzed and expatiated in detail. Then, according to the dynamic analysis model of full-bridge structure established by finite element software ANSYS, the natural vibration characteristics of the full-bridge model are calculated and analyzed. The first 10 vibration modes and their corresponding natural frequencies are obtained. Then, the spatial vibration responses of the bridge system under different speed conditions are simulated for 16 CRH2 (CRH3) trains, 16 CRH2 (CRH2) trains and 5 freight trains on Line 1. The dynamic indexes of vehicles and bridges are evaluated. Finally, the spatial vibration response of CRH3 train at different speed working conditions is given on 6 three lines (Line 1, Line 2, Line 3, Line 1, Line 2, Line 4, Line 4). The simulation calculation should be carried out. The dynamic indexes of the vehicle and bridge when the three-line train is running simultaneously are compared with the dynamic indexes of the vehicle and the bridge when the train is traveling separately on the corresponding line. The law between the dynamic indexes of the vehicle and the bridge is summarized when the three-lane driving and the single-line driving at the same time.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U441.3;U448.27

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本文編號：1498839