| The critical loading for lateral buckling of continuous welded rail |
| |
| 引用本文： | SUNG Wen-pei SHIH Ming-hsiang LIN Cheng-I GO Cheer Germ. The critical loading for lateral buckling of continuous welded rail[J]. 浙江大学学报(A卷英文版), 2005, 6(8): 878-885. DOI: 10.1631/jzus.2005.A0878 |
| |
| 作者姓名： | SUNG Wen-pei SHIH Ming-hsiang LIN Cheng-I GO Cheer Germ |
| |
| 作者单位： | Department of Construction Engineering，National Kaoshiang First University of Science and Technology，Department of Fire Science，Wu-Feng Institute of Technology，Ming-Hsiung，Chiayi，Department of Civil Engineering，National Chung Hsing University Taiwan 824，China，Taiwan 621，China，Taiwan 40227，China) |
| |
| 基金项目： | Project supported by the National Science Council of Taiwan (No.NSC 93-2211-E-167-002), China |
| |
| 摘 要： | INTRODUCTION The conventional design of rails uses steel clipboards and bolts to link rails, and avoids bucklingcaused by thermal expansion effect by mountingexpansion joints to solve axial restraint generated byseasonal or day-and-night temperature changes. Butthe discontinuity at the rail joints brings discomfortand noise to passengers when the train has suddenlystops or starts, during which train speed cannot beeffectively increased, rails are more easily damaged,and the cost of mainte…
|
| 关 键 词： | 热效应 有限微分法 Monte Carlo法 反作用路径 连续焊接围栏 CWRs 支撑系统 |
| 收稿时间： | 2005-01-30 |
| 修稿时间： | 2005-05-11 |
The critical loading for lateral buckling of continuous welded rail |
| |
| Sung Wen-pei,Shih Ming-hsiang,Lin Cheng-I,Go Cheer Germ. The critical loading for lateral buckling of continuous welded rail[J]. Journal of Zhejiang University Science, 2005, 6(8): 878-885. DOI: 10.1631/jzus.2005.A0878 |
| |
| Authors: | Sung Wen-pei Shih Ming-hsiang Lin Cheng-I Go Cheer Germ |
| |
| Affiliation: | 1.Department of Landscape Design and Management,National Chin-Yi Institute of Technology,Taiwan;2.Department of Construction Engineering,National Kaoshiang First University of Science and Technology,Taiwan;3.Department of Fire Science,Wu-Feng Institute of Technology,Ming-Hsiung, Chiayi,Taiwan;4.Department of Civil Engineering,National Chung Hsing University,Taiwan |
| |
| Abstract: | The most significant differences between continuous welded rails (CWRs) and general split-type connectors are axial compression in the longitudinal direction, buckling stability and other issues generated under the influence of thermal effect.Under thermal effect, a dynamical behavior similar to that of a beam fixed on two sides occurs in the central locked area of the welded rail, as there is axial compression but no possibility of sliding. Continuous welded rails do not contract or expand, and are supported by the dynamical system made up of ballasts and rail clips. The rail-support system mentioned above has the features of non-uniform material distribution and uncertainty of construction quality. Due to these facts, the dynamics method based on the linear elastic hypothesis cannot correctly evaluate the rail's buckling conditions. This study is aimed at applying Finite Difference Method (FDM) and Monte Carlo Random Normal Variables Method to the analysis of welded rail's buckling behavior during the train's acceleration and deceleration, under thermal effect and uncertain factors of ballast and rail clips. The analysis result showed that buckling occurs under the combined effect of thermal effect and the train's deceleration force co-effect and the variance ratio of ballast and rail clips is over 0.85, or under the combined effect of thermal effect and the train's acceleration force when the variance ratio is over 0.88. |
| |
| Keywords: | Thermal effect Finite Difference Method Monte Carlo Method Buckling load |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
