本文選題：車橋耦合振動 + 車橋系統(tǒng)��； 參考：《西南交通大學(xué)》2015年碩士論文

【摘要】：隨著我國交通事業(yè)的不斷進步特別是高速鐵路的快速發(fā)展,列車運行時速顯著提高,高速鐵路布設(shè)的范圍不斷擴大。橋梁作為高速鐵路線路上的重要組成部分,其結(jié)構(gòu)剛度、整體線形、運行平穩(wěn)性以及動力性能與動力響應(yīng)等均有較高要求,對與之相關(guān)的車橋耦合振動行為進行研究具有工程實際意義。論文介紹了車橋耦合理論的發(fā)展歷程,回顧了車橋耦合振動研究的典型階段性成果,針對橋梁結(jié)構(gòu),介紹了橋梁動力方程建立的基本方法,通過有限元結(jié)構(gòu)分析程序(ANSYS)建立了具體的橋梁動力分析模型,采用蘭索斯法對其動力特性進行了分析,針對列車-橋的耦合關(guān)系,介紹的軌道不平順的相關(guān)理論并通過三角級數(shù)和二次濾波兩種不同的方法對列車軌道不平順激勵進行了模擬分析,針對列車車體介紹了多體動力學(xué)的相關(guān)理論,通過多體動力學(xué)軟件(SMPACK)建立了精細化的CHR3型動車組模型�；谏鲜龉ぷ�,通過軟件的聯(lián)合仿真,根據(jù)輪軌接觸關(guān)系將橋梁系統(tǒng)和車輛系統(tǒng)進行耦合,得到了整體的動力耦合方程,并詳細說明了有限元軟件ANSYS和多體動力學(xué)軟件SMPACK聯(lián)合仿真的基本實現(xiàn)方法。援引實際橋梁工程為算例,論文以一座80m鐵路拱橋為工程背景,計算了CHR3型動車組和貨車在不同時速下過橋的車橋耦合振動響應(yīng),通過與相關(guān)描述規(guī)范進行比對,該橋的車橋耦合動力性能良好,同時,通過算例表明,聯(lián)合仿真有著精細化程度高,計算速度快等優(yōu)點。為今后同類橋型的設(shè)計提供了一定的理論依據(jù)。
[Abstract]:With the continuous progress of China's transportation industry, especially the rapid development of high-speed railway, the speed of train running has been significantly increased, and the scope of high-speed railway layout has been continuously expanded. As an important part of high-speed railway line, the structure stiffness, overall alignment, smooth operation, dynamic performance and dynamic response of the bridge have higher requirements. It is of practical significance to study the coupled vibration behavior of vehicle and bridge. This paper introduces the development course of vehicle-bridge coupling theory, reviews the typical stage achievements of vehicle-bridge coupling vibration research, and introduces the basic method of establishing bridge dynamic equation for bridge structure. The dynamic analysis model of bridge is established by finite element structural analysis program ANSYS. the dynamic characteristics of the bridge are analyzed by Ranssos method, and the coupling relationship between train and bridge is analyzed. The related theory of track irregularity is introduced, and the train track irregularity excitation is simulated and analyzed by two different methods of triangle series and quadratic filter. The related theory of multi-body dynamics is introduced for the train body. A fine model of CHR3 EMU was established by means of the multibody dynamics software SMMPACK. Based on the above work, through the joint simulation of the software, the bridge system and the vehicle system are coupled according to the wheel-rail contact relationship, and the overall dynamic coupling equation is obtained. The basic method of joint simulation of finite element software ANSYS and multibody dynamics software SMPACK is described in detail. Taking an 80m railway arch bridge as an example, the paper calculates the coupled vibration response of a CHR3 EMU and a truck crossing the bridge at different speeds, and compares it with the relevant description code. The vehicle-bridge coupling dynamic performance of the bridge is good. At the same time, the example shows that the joint simulation has the advantages of high precision and fast calculation speed. It provides a certain theoretical basis for the design of the similar bridge type in the future.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U441.3;O313.7

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本文編號：1775534