The Research on Unloading Time of Stack Preloading Based on the Measured Data

Abstract:

Combined with practical engineering, the second-class level measured data is got via stack preloading experiment on the soft and weak railway subgrade. By using the hyperbolic method and three points method to fit subsidence curve, the post-construction settlement S (t =∞) and the settlement at any time S(t) is evaluated, then a reasonable unloading time is inferred by the comparison between S (t =∞) and S(t=180). Studies have shown that hyperbolic method and three points method can predict the post-construction settlement accurately, the time unloading six months after the stack is completed is quite reasonable.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1659-1663
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1659
• Online since: August 2013
• Authors: Ji Xin Yang*, Qian Rui Liu, Zhao Da Zeng
• Keywords: Curve Fitting, Post-Construction Settlement, Stack Preloading, Unloading Time

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