噪声与振动控制2018，Vol.38Issue(z1)：344-347,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.073
地铁小半径曲线段新型护轨的钢轨振动及磨耗研究
Study on Rail Vibration and Corrugation of New Guard Rail in Small Radius Curve
高晓刚 1王安斌1
作者信息
- 1. 上海工程技术大学 城市轨道交通学院,上海 201620
- 折叠
摘要
Abstract
In order to further study the effect of vibration damping and anti-wear of a new guard rail system in the small radius curve section, which considering a new guard rail structure characteristics and the interaction between wheel and rail, the curve section of wheel/rail contact model was established, and was analysed by mechanical characteristics. Based on a small radius curve section of a subway, the new guardrail and no-installation guardrail approximate routes for different speed of online testing, hammer test, and wave grinding test. The tests show that with guard rail, the acceleration level of the vertical vibration decreased 2.2 dB, while the lateral vibration reduced 3.1 dB. When the train speed increased from 40km/h to 55 km/h, the vibration acceleration of the rail also increased gradually in both the case with or without the rail. But the transverse vibration can still be reduced by 3.4 dB. At the same time, the wave abrasion of the protective track is significantly reduced at the wavelength of about 50 mm. The new type of vibration damping effect is furtherly verified by the theory of the characteristic frequency with uncontinuous support. Theoretical analysis and test results show that the installation of new guard rail can restrain the vibration of steel rail and slow the growth of rail corrugation.关键词
振动与波/小半径曲线/新型护轨/参振质量/振动能量/波浪磨耗Key words
vibration and wave/small radius curve/new guard rail/vibration mass/vibration energy/rail corrugation分类
数理科学引用本文复制引用
高晓刚,王安斌..地铁小半径曲线段新型护轨的钢轨振动及磨耗研究[J].噪声与振动控制,2018,38(z1):344-347,4.
