【摘要】：目前我國在高速鐵路無縫道岔設(shè)計(jì)理論體系、道岔平面與關(guān)鍵結(jié)構(gòu)、道岔制造、組裝、運(yùn)輸、鋪設(shè)等方面均形成了一系列具有我國自主知識(shí)產(chǎn)權(quán)的高速道岔技術(shù)體系。但缺乏對(duì)高速鐵路無縫道岔的運(yùn)營管理經(jīng)驗(yàn),對(duì)無縫道岔傷損劣化機(jī)理以及傷損檢測和養(yǎng)護(hù)維修技術(shù)的研究才剛剛起步,對(duì)無縫道岔鋼軌磨損、可動(dòng)軌件矢彎變形、滑床臺(tái)板脫空后的復(fù)雜輪軌關(guān)系對(duì)列車運(yùn)行平穩(wěn)性、安全性的影響規(guī)律研究不夠深入,對(duì)道岔疲勞劣化機(jī)理缺乏系統(tǒng)性研究�？傮w來說,國內(nèi)在道岔疲勞劣化指標(biāo)、檢測方法和養(yǎng)修方案等方面均存在明顯的不足。 本文主要研究無縫道岔傷損及劣化的機(jī)理,采用ANSYS和SIMPACK軟件對(duì)循環(huán)溫度荷載作用以及循環(huán)溫度荷載與行車動(dòng)力耦合作用下道岔的應(yīng)力與變形情況進(jìn)行了系統(tǒng)的分析,并與實(shí)測數(shù)據(jù)和已有研究進(jìn)行對(duì)比,驗(yàn)證模型的可靠性和可行性。利用所建立的分析模型,對(duì)道岔區(qū)傷損及病害的產(chǎn)生機(jī)理進(jìn)行了合理的闡述,并對(duì)傷損狀態(tài)下車-岔動(dòng)力學(xué)性能進(jìn)行了評(píng)估,主要所做工作及所得結(jié)論如下： (1)創(chuàng)新性的采用循環(huán)溫度荷載加載方式對(duì)道岔區(qū)鋼軌在溫度荷載下的受力及變形進(jìn)行了分析,并將這種新型加載方式與既有的整體加載方式條件下的計(jì)算結(jié)果進(jìn)行對(duì)比,體現(xiàn)利用新型加載方式對(duì)道岔傷損及病害機(jī)理進(jìn)行研究的必要性。 (2)對(duì)耦合溫度場以及行車動(dòng)力作用下道岔受力及變形進(jìn)行分析,并對(duì)不同行車速度下直向及側(cè)向過岔過程中道岔受力與變形進(jìn)行了對(duì)比。結(jié)果表明,耦合溫度場的存在對(duì)車輛行車動(dòng)力學(xué)效應(yīng)有較大的影響,存在耦合溫度場時(shí),道岔區(qū)鋼軌垂向位移有所減小,而振動(dòng)加速度有所增加,鋼軌縱向應(yīng)力也有所增加,各項(xiàng)指標(biāo)隨著車輛運(yùn)行速度的增加體現(xiàn)出一定程度的增加的趨勢。 (3)利用耦合溫度場與車-岔動(dòng)力學(xué)分析結(jié)果得出岔區(qū)病害產(chǎn)生原因,并研究了岔區(qū)在存在基本軌、翼軌磨耗以及心軌、尖軌不密貼兩種病害情況下車輛通過時(shí)的動(dòng)力學(xué)響應(yīng)并分析了病害劣化的原因。
[Abstract]:At present, China has formed a series of high-speed turnout technology systems with our own intellectual property rights in the aspects of high-speed railway seamless turnout design theoretical system, switch plane and key structure, turnout manufacture, assembly, transportation, laying and so on. However, there is no experience in operation and management of seamless turnout in high-speed railway. The research on damage deterioration mechanism, damage detection and maintenance technology of jointless turnout is just beginning. For the wear of seamless switch rail, the sagittal bending deformation of movable rail, The influence of the complex wheel-rail relationship on train running stability and safety is not deep enough, and the fatigue deterioration mechanism of turnout is not systematically studied. In general, there are obvious deficiencies in fatigue deterioration index, detection method and maintenance scheme of turnout in China. In this paper, the mechanism of the damage and deterioration of seamless turnout is studied. The cyclic temperature load and the stress and deformation of the turnout under the coupling of cyclic temperature load and driving power are analyzed systematically by using ANSYS and SIMPACK software. The reliability and feasibility of the model are verified by comparing with the measured data and existing research. Based on the established analysis model, the mechanism of injury and disease in turnout area is described reasonably, and the dynamic performance of disembarkation in the state of injury is evaluated. The main work and conclusions are as follows: (1) the stress and deformation of rail in turnout area under temperature load are analyzed innovatively by cyclic temperature load loading. The new loading method is compared with the calculation results under the existing integral loading mode, which reflects the necessity of using the new loading mode to study the mechanism of turnout damage and disease. (2) the coupling temperature field and the force and deformation of the turnout under the action of driving force are analyzed, and the stress and deformation of the turnout in the process of straight and lateral crossing under different driving speeds are compared. The results show that the existence of coupling temperature field has a great effect on vehicle driving dynamics. When there is coupling temperature field, the vertical displacement of rail decreases, the vibration acceleration increases, and the longitudinal stress of rail increases. With the increase of vehicle speed, each index reflects the trend of increasing to a certain extent. (3) by using the coupled temperature field and the dynamic analysis of vehicle-turnout, the causes of the fault in the bifurcation zone are obtained, and the existence of the basic rail, the wear of the wing rail and the heart orbit in the bifurcation zone are studied. The dynamic response of vehicles passing through the two diseases is analyzed and the causes of disease deterioration are analyzed.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：U213.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 白冰;;循環(huán)溫度荷載作用下飽和多孔介質(zhì)熱-水-力耦合響應(yīng)[J];工程力學(xué);2007年05期

2 任尊松;孫守光;;道岔區(qū)輪軌接觸幾何關(guān)系研究[J];工程力學(xué);2008年11期

3 錢立和;劉帥;孟江英;郭鵬程;張福成;;轍叉用高錳鋼的循環(huán)變形與硬化[J];燕山大學(xué)學(xué)報(bào);2012年06期

4 羅峗;吳安偉;;動(dòng)車組與單節(jié)車側(cè)向通過道岔動(dòng)力學(xué)性能比較[J];機(jī)車電傳動(dòng);2007年01期

5 羅信偉;雷曉燕;馮青松;劉慶杰;;無縫道岔溫度力及變形的有限元分析[J];交通運(yùn)輸工程與信息學(xué)報(bào);2007年01期

6 張洲旭;;時(shí)速350公里60kg/m鋼軌18號(hào)高速道岔制造工藝優(yōu)化[J];山西建筑;2012年16期

7 王兆平;李德忠;;鐵路道岔尖軌病害整治和養(yǎng)護(hù)方法的改進(jìn)[J];科技信息;2012年27期

8 宋傳懿;;鐵路提速道岔病害原因分析與整治[J];科技成果縱橫;2011年03期

9 侯愛濱;60kg/m鋼軌18號(hào)提速道岔研究與設(shè)計(jì)[J];鐵道標(biāo)準(zhǔn)設(shè)計(jì);1998年06期

10 車偉;張彥;;60 kg/m鋼軌18號(hào)(Vz200)可動(dòng)心軌單開道岔的研制[J];鐵道標(biāo)準(zhǔn)設(shè)計(jì);2006年S1期

相關(guān)博士學(xué)位論文 前2條

1 陳嶸;高速鐵路車輛—道岔—橋梁耦合振動(dòng)理論及應(yīng)用研究[D];西南交通大學(xué);2009年

2 崔圣愛;基于多體系統(tǒng)動(dòng)力學(xué)和有限元法的車橋耦合振動(dòng)精細(xì)化仿真研究[D];西南交通大學(xué);2009年

相關(guān)碩士學(xué)位論文 前4條

1 李蒼楠;基于剛?cè)狁詈下?lián)合仿真的高速鐵路橋上無砟道岔動(dòng)力學(xué)研究[D];北京交通大學(xué);2011年

2 井國慶;18號(hào)可動(dòng)心軌道岔心軌不足位移仿真分析[D];西南交通大學(xué);2006年

3 李旨遠(yuǎn);基于瞬態(tài)傳熱的鋼結(jié)構(gòu)抗火設(shè)計(jì)研究[D];內(nèi)蒙古科技大學(xué);2009年

4 王偉華;土路基上雙塊式無砟軌道垂向動(dòng)力特性分析[D];西南交通大學(xué);2009年

，

本文編號(hào)：2342967