| Influence of Track Parameters on Welded Turnout Group |
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| 作者姓名： | 徐庆元 王平 屈晓晖 李树德 |
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| 作者单位： | School of Civil Engineering Southwest Jiaotong University，School of Civil Engineering Southwest Jiaotong University，No.3 Railway Survey and Design Institute，No.3 Railway Survey and Design Institute，Chengdu 610031 China College of Civil and Architectural Engineering Central South University Changsha 410075 China，Chengdu 610031 China，Tianjin 300142 China，Tianjin 300142 China |
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| 基金项目： | The Doctoral Fund of Ministry of Educa- tionof China （ No. 20050613007） |
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| 摘 要： | Introduction Welded turnout is a key part for continuouswelded rails (CWRs). Longitudinal force and dis-placement of rails should be considered in the designof welded turnout. When the distance between thewelded turnouts at places like railway stations is…
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| 关 键 词： | 无缝道岔组 轨道参数 附加力 位移 有限元法 |
| 文章编号： | 1005-2429（2007）02-0122-04 |
| 收稿时间： | 2006-02-27 |
Influence of Track Parameters on Welded Turnout Group |
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| XU Qing-yuan,WANG Ping,QU Xiao-hui,LI Shu-de.Influence of Track Parameters on Welded Turnout Group[J].Journal of Southwest Jiaotong University,2007,15(2):122-125. |
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| Authors: | XU Qing-yuan WANG Ping QU Xiao-hui LI Shu-de |
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| Abstract: | By building the finite element model, the track parameters, including the ultimate longitudinal resistance, the length of the intermediate straight line, and the gap between spacer blocks, were analyzed for their influences on the longitudinal forces and displacements of the single turnout and turnout group, respectively. The results indicate that when the longitudinal resistance drops from 32 to 20 N/cm, the maximum additional longitudinal force of the turnout group increases by 19.2%, and the maximum additional longitudinal displacement of the turnout group grows by 85.3% compared with 50.4% for the single turnout. When the length of intermediate straight line rises from 0 m to infinite, the maximum additional longitudinal force decreases by 38.8%, and the maximum additional longitudinal displacement by 80.3%. |
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| Keywords: | Railway engineering Welded turnout group Finite element methoe Continuous welded rail |
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