Creep Effects on Simply Supported Prestressed Concrete Box Girder of High-speed Railway with Ballastless Tracks

摘要：

　　Creep will lead to increasing deflection of prestressed concrete girder,which may induce rails uneven,especially to ballastless tracks in high-speed railways.In this paper,two creep models,CEB-FIP90 and ACI209,were used in a finite element model to analyze influences of creep on simply supported prestressed concrete box girders which are used in high-speed railway in China.Sensitivity analysis was carried on towards curing age,secondary dead load,loading time and prestressing method on deformation of the girder.The results show creep should be controlled in engineering to ensure driving security.

关键词： prestressed concrete box girder creep ballastless track

作者: Wang Fang Bing Han Shaokun Yang

作者单位: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 5106

会议类型: 国际会议

会议名称: The International Conference on Civil Engineering, Architecture and Sustainable Infrastructure (2012土木建筑与可持续基础设施工程国际会议(ICCEASI2012))

会议地点: 郑州

会议语种:英文

页码: 733-737

在线出版日期: 2012-09-22（万方平台首次上网日期，不代表论文的发表时间）