重载铁路大跨度钢桁梁桥复合材料轨枕适应性

doi:10.3901/JME.2019.08.145

机械工程学报 ›› 2019, Vol. 55 ›› Issue (8): 145-153.doi: 10.3901/JME.2019.08.145

重载铁路大跨度钢桁梁桥复合材料轨枕适应性

张骞¹, 孟宪洪², 凌烈鹏³, 高芒芒⁴, 于梦阁¹

1. 青岛大学机电工程学院青岛 266071;
2. 朔黄铁路发展有限责任公司北京 100038;
3. 中国铁道科学研究院铁道建筑研究所北京 100081;
4. 中国铁道科学研究院基础设施检测研究所北京 100081

收稿日期:2018-06-14 修回日期:2018-10-12 出版日期:2019-04-20 发布日期:2019-04-20
作者简介:张骞,男,1985年出生,博士,讲师。主要研究方向为车线桥耦合振动。E-mail:figozq100@sina.com
基金资助:
朔黄铁路发展有限责任公司科技基金（SHGF-14-51）、国家自然科学基金（51705276）和青岛市博士后基金应用（40518060011）资助项目。

Adaptability of Composite Material Sleeper for Heavy Railway Steel Truss Girder Bridge

ZHANG Qian¹, MENG Xianhong², LING Liepeng³, GAO Mangmang⁴, YU Mengge¹

1. Mechanical and Electrical Engineering College, Qingdao University, Qingdao 266071;
2. Shuohuang Railway Development Co., Ltd, Beijing 100038;
3. Railway Engineering ResearchInstitute, China Academy of Railway Sciences, Beijing 100081;
4. Infrastructure Inspection Research Institute, China Academy of Railway Sciences, Beijing 100081

Received:2018-06-14 Revised:2018-10-12 Online:2019-04-20 Published:2019-04-20

摘要/Abstract

摘要： 我国铁路钢桥传统上采用木枕传递活载，尽管木材有着良好的弹性和绝缘性能，但存在木材用量大和养护维修繁琐的不足，复合材料轨枕可通过截面设计使其在外形和重量上与木枕相近。为研究复合材料轨枕在30 t轴质量重载铁路上的适用性，对采用木枕和复合材料轨枕的64 m单线铁路栓焊下承桁梁进行动力响应分析，考察货车以不同速度通过桥梁时车辆、轨枕和桥梁的动力性能，对比分析木枕和复合材料轨枕的受力和变形。研究结果表明：铺装不同类型轨枕时，就桥梁而言，各车速下跨中垂向位移和加速度均低于规范限值，满足行车安全要求；就车辆而言，各车速下轮重减载率和车体振动也均满足要求，且铺装木枕或复合材料轨枕时系统动力响应无显著差异；复合材料轨枕的应力比木枕大，但变形小于木枕，无论应力还是变形均远小于复合材料轨枕的许用应力和许用变形；就复合材料轨枕而言，虽然距力作用点较近处的轨枕受载比木枕大，但是两者差距小于2%，可认为基本一致。复合材料轨枕能满足30 t轴质量货车在60～90 km/h范围内安全平稳运行的要求，适合作为木枕替代品。

关键词: 车-线-桥耦合振动, 复合材料轨枕, 钢桁梁, 平稳性, 行车安全

Abstract: Wooden sleepers are traditionally used to transmit live loads on railway steel bridges in China. Although wood has good elasticity and insulation properties, it has the disadvantages of large amount of wood and cumbersome maintenance and repair. Composite sleepers can be similar in shape and weight to wooden pillows. Composite sleeperswhichcan be designed in terms of shape and weight are similar as wooden pillows. In order to study the applicability of the composite material sleeper on the 30 t axle mass load railway,coupling vibration analysis of the 64m single-wire railway underpinning with wooden pillow and composite material sleeper was carried out. At different speeds through the bridge to examine the dynamic performance of train and bridge. The results show that:in the case of different types of sleeper, the vertical displacement and acceleration of the train are lower than the standard limit for the bridge, and the traffic safety requirements are satisfied. For the train, wheel load reduction and body vibration are also required to meet the requirements, and pavement or composite pillow when the system dynamic response is no significant difference. The stress of the composite sleeper is larger than that of the pillow, but still far less than the allowable stress of the composite sleeper. The deformation of the composite sleeper is less than that of the pillow, the deformation is less than permissible deformation;for the composite sleeper, although the load near the force point of the sleeper is bigger than the pillow, but the gap between the two is less than 2%, basically the same.therefore, composite sleepers can meet the trainin the range of 60~90 km/h safe and stable operation requirements and suitable as a substitute for wooden pillows.

Key words: omposite material sleeper, safety, stability, steel truss girder, train-track-bridge coupling vibration

中图分类号:

U214

张骞, 孟宪洪, 凌烈鹏, 高芒芒, 于梦阁. 重载铁路大跨度钢桁梁桥复合材料轨枕适应性[J]. 机械工程学报, 2019, 55(8): 145-153.

ZHANG Qian, MENG Xianhong, LING Liepeng, GAO Mangmang, YU Mengge. Adaptability of Composite Material Sleeper for Heavy Railway Steel Truss Girder Bridge[J]. Journal of Mechanical Engineering, 2019, 55(8): 145-153.

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重载铁路大跨度钢桁梁桥复合材料轨枕适应性

Adaptability of Composite Material Sleeper for Heavy Railway Steel Truss Girder Bridge

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