东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (8): 1195-1200.DOI: 10.12068/j.issn.1005-3026.2017.08.027

• 资源与土木工程 • 上一篇    下一篇

基于高阶矩法的梁-轨系统温度作用代表值

朱俊樸1,2， 戴公连1， 苏海霆1， 梁金宝1   

  1. (1. 中南大学 土木工程学院， 湖南 长沙410075; 2. 中国建筑股份有限公司基础设施事业部， 北京100044)
  • 收稿日期:2016-03-02 修回日期:2016-03-02 出版日期:2017-08-15 发布日期:2017-08-12
  • 通讯作者: 朱俊樸
  • 作者简介:朱俊樸(1991-)，男，江西赣州人，中南大学博士研究生，中国建筑股份有限公司基础设施事业部职员； 戴公连(1964-)，男，河南夏邑人，中南大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51578552)； 高速铁路基础研究联合基金资助项目(U13342023).

Representative Values of Temperature Action of the Box Girder-Track System Based on the Higher-Order Moment Method

ZHU Jun-pu1,2 ， DAI Gong-lian1 ， SU Hai-ting1 ， LIANG Jin-bao1   

  1. 1. School of Civil Engineering， Central South University， Changsha 410075， China； 2. Civil Infrastructure Operations Dept.， China State Construction Engineering Corp. LTD， Beijing 100044， China.
  • Received:2016-03-02 Revised:2016-03-02 Online:2017-08-15 Published:2017-08-12
  • Contact: ZHU Jun-pu
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

697

摘要： 提出了一种基于高阶矩法的结构温度统计方法，可避免传统方法拟合曲线求分布的不确定性，计算效率、精度高.基于我国华东一高铁桥梁长期监测数据，将箱梁和轨道作为整体，计算了其竖、横向温度和温差代表值，分析了温度云图和温差分布规律，研究了轨道结构对箱梁表面温度的遮盖效应.研究表明:结构年温度样本属中变异，分布规律平稳;高温标准值分别为35.4℃，38.15℃，竖向最大高温梯度分别为10.33℃，12.93℃;混凝土竖向有效导热长度约为60cm，轨道遮盖可降低箱梁表面温度4.4℃.

关键词: 高阶矩法, 桥梁工程, 轨道工程, 温度作用代表值, 高速铁路

Abstract: A structure temperature statistical method was proposed based on the higher-order moment method， which can avoid the uncertainty of the traditional fitting curve method to seeking a distribution as well as can reach a high computational efficiency and accuracy. Based on the long-term monitoring data of a high speed railway bridge in the east China area， by taking box girder and track as an integrated system， the representative values of temperature and its difference in vertical and horizontal direction were calculated. The temperature distribution nephogram and the temperature-difference distribution rules were analyzed. The covering effect of track on the temperature of the box girder surface was studied. Results show that the annual temperature sample of the girder-track system has a middle variability. The distribution is relatively stable with a high temperature standard values of 35.4℃ and 38.15℃ respectively. The largest vertical temperature gradients are 10.33℃ and 12.93℃ respectively. The vertical effective thermal conductivity length of the concrete is approximate 60cm， and the covering effect of the track on the box-girder surface temperature is 4.4℃ declined.

Key words: higher-order moment method, bridge engineering, railway engineering, temperature action representative value, high speed railway

中图分类号: