您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第12卷    第1期    总第63期    2015年2月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7029(2015)01-0001-06
太阳辐射对CRTSⅠ型双块式无砟轨道道床板表面温度影响的试验研究
万章博1,杨荣山1,任勃1,王晨2,赵坪锐1

(1.西南交通大学 高速铁路线路工程教育部重点实验室,四川 成都 610031;
2.江苏大学 土木工程与力学学院,江苏 镇江 212013
)

摘 要: 无砟轨道是由钢筋混凝土材料构成的复合结构,受日照和气温影响很大。通过试验测得成都地区试验场地的气温、太阳辐射强度以及CRTS I型双块式无砟轨道道床板表面的温度,分析道床板表面温度随太阳辐射强度的变化关系,研究道床板表面放热系数的取值;分析太阳辐射强度对道床板表面温度的影响,建立道床板表面温度极值与气温极值、太阳辐射所引起的温度增量极值以及其他环境因素所引起的温度变化值之间的关系,并给出相应计算参数的建议值,为无砟轨道道床板内部温度场分布及无砟轨道温度应力研究提供试验基础。

 

关键字: 太阳辐射;双块式无砟轨道;道床板;气温;表面温度

Experimental study on the impact of solar radiation intensity on the surface temperature of deck slab for CRTS I twin-block ballastless track
WAN Zhangbo1, YANG Rongshan1, REN Bo1, WANG Chen2, ZHAO Pingrui1

1. MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China

Abstract:Ballastless track is a composite structure constituted by reinforced concrete material, which is greatly influenced by the sunshine and air temperature. Based on the in-site experiments in winter, the in-site air temperature, solar radiation intensity and the surface temperature of deck slab of CRTS I twin-block ballastless track were acquired in Chengdu, based on the analyses of in-site data, to obtain the relationship of the surface temperature of deck slab changing with the solar radiation intensity and the value of heat transfer coefficients of deck slab, initially establish the correlation among the maximum surface temperature of deck slab, the air temperature, the increment caused by solar radiation intensity and the changing temperature caused by other environment influencing factors. Also, the suggested values of relative parameters were given, which provides an experimental basis for the study of distribution of internal temperature field of deck slab and the temperature stress of ballastless track.

 

Key words: solar radiation intensity; twin-block ballastless track; deck slab; air temperature; surface temperature

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn