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A computational method for post-construction settlement of high-speed railway bridge pile foundation considering soil creep effect

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Abstract

Based on reasonable assumptions that simplified the calculational model, a simple and practical method was proposed to calculate the post-construction settlement of high-speed railway bridge pile foundation by using the Mesri creep model to describe the soil characteristics and the Mindlin-Geddes method considering pile diameter to calculate the vertical additional stress of pile bottom. A program named CPPS was designed for this method to calculate the post-construction settlement of a high-speed railway bridge pile foundation. The result indicates that the post-construction settlement in 100 years meets the requirements of the engineering specifications, and in the first two decades, the post-construction settlement is about 80% of its total settlement, while the settlement in the rest eighty years tends to be stable. Compared with the measured settlement after laying railway tracks, the calculational result is closed to that of the measured, and the results are conservative with a high computational accuracy. It is noted that the method can be used to calculate the post-construction settlement for the preliminary design of high-speed railway bridge pile foundation.

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Authors and Affiliations

  1. School of Civil Engineering, Central South University, Changsha, 410075, China

    Sheng-yang Feng  (冯胜洋), Li-min Wei  (魏丽敏), Chong-yang He  (何重阳) & Qun He  (何群)

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  1. Sheng-yang Feng  (冯胜洋)
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  2. Li-min Wei  (魏丽敏)
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  3. Chong-yang He  (何重阳)
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  4. Qun He  (何群)
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Corresponding author

Correspondence to Sheng-yang Feng  (冯胜洋).

Additional information

Foundation item: Projects(2009G008-B, 2010G018-E-3) supported by Key Projects of China Railway Ministry Science and Technology Research and Development Program; Project(CX2013B076) supported by Hunan Provincial Innovation Foundation For Postgraduate, China

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Feng, Sy., Wei, Lm., He, Cy. et al. A computational method for post-construction settlement of high-speed railway bridge pile foundation considering soil creep effect. J. Cent. South Univ. 21, 2921–2927 (2014). https://doi.org/10.1007/s11771-014-2258-z

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  • DOI: https://doi.org/10.1007/s11771-014-2258-z

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