Analysis of frost heave mechanisms in a high-speed railway embankment

Author:

Zhang Sheng1,Sheng Daichao12,Zhao Guotang3,Niu Fujun4,He Zuoyue1

Affiliation:

1. National Engineering Laboratory for High-Speed Railway Construction, School of Civil Engineering, Central South University, Changsha, 410075, China.

2. Centre of Excellence for Geotechnical Science and Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia.

3. China Railway Corporation, Beijing, China.

4. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu, China.

Abstract

The Harbin–Dalian high-speed railway in northeastern China has a significant portion of track foundation built on seasonally frozen ground. Wide-spread frost heave was observed during the first winter of its operation and the heave occurred mainly in coarse fills that were considered not susceptible to frost heave. This paper first presents the field data of frost heave and frost depth observed along the railway. It then analyses alternative mechanisms that have been considered to have caused the observed frost heave. The three most likely mechanisms are poor quality control of fine content in the coarse fill, the top-down water supply mechanism, and the bottom-up water supply mechanism. The likelihoods of these mechanisms are analysed against observed field data, using a one-dimensional frost heave model. The results indicate that the most likely explanation for the unexpected frost heave is a combined action of different mechanisms.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Reference29 articles.

1. Beskow, G. 1935. Soil freezing and frost heaving with special application to roads and railroads. Swedish Geological Survey Year Book 26(3), Series C, No. 375.

2. Modeling frost heave in freezing soils

3. Artificial ground freezing of a volcanic ash: laboratory tests and modelling

4. Pore-Water Pressures in Freezing and Thawing Fine-Grained Soils

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