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

Wang Fang; Bing Han; Shao Kun Yang

doi:10.4028/www.scientific.net/AMM.238.733

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 238Creep Effects on Simply Supported Prestressed...

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

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volume 238)

Pages:

733-737

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.238.733

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Online since:

November 2012

Authors:

Wang Fang, Bing Han, Shao Kun Yang

Keywords:

Ballastless Track, Creep, Prestressed Concrete Box Girder

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