Numerical Analyses of the Effect of the Freezing Wall on Ground Movement in the Artificial Ground Freezing Method

Author:

Ou Yazhou1,Wang Long1,Bian Hui1,Chen Hua1,Yu Shaole1,Chen Tao1,Satyanaga Alfrendo2ORCID,Zhai Qian3ORCID

Affiliation:

1. China Construction Eighth Engineering Division Co., Ltd., Shanghai 200112, China

2. Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, Nur-Sultan 010000, Kazakhstan

3. School of Civil Engineering, Southeast University, Nanjing 211189, China

Abstract

The advancement of massive construction in urban subway projects contributes to the increased use of the artificial ground freezing (AGF) method in the construction of cross passages due to its reliability and environmental friendliness. However, the uplift or subsidence of the ground surface induced by the frost heave and thawing settlement of the soil can be a problem for existing buildings, and the current design method places way too much emphasis on the strength requirement of the freezing wall. In this study, FLAC3D was employed to develop a series of state-of-the-art numerical models of the construction of a typical subway cross passage by the AGF method, utilizing freezing walls with different thicknesses. The results of this study can be used to examine the ground deformation arising from the AGF method and the influence of the thickness of the freezing wall on the AGF method.

Publisher

MDPI AG

Reference30 articles.

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