土工格室加固道床的影响因素研究

doi:10.11896/cldb.25010185

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Abstract Track settlement is a primary disease for ballasted railway, especially for fast and heavy haul trains. In order to study the reinforcing mechanism of geocell, the 3D finite element model of ballasted track with a geocell layer embedded in ballast layer were established by ABAQUS software, and 90° phase loading were used to simulate the cyclic load of passing train. The simulation results show that all the sleeper settlements are similar which prove the sinusoidal phase loading is acceptable to model the train load. With the increasing of the axle load, the ballast settlement increases. Meanwhile, for the reinforced condition, the lateral displacement and vertical settlement of ballast layer reduce 60% and 11%, respectively, which confirms the confinement function of the geocell. The reinforcing efficiency under the heavy load becomes smaller than that under the normal load, but it is also can be improved by modifing the geocell stiffness. The geocell stiffness of 400—800 MPa is required to achieve a good confinement under heavy load. This findinga is useful to control the track settlement, and also the application of geocell in ballasted railway.

Key words： track settlement numerical simulation dynamic load geocell axle load layout scheme

Published: 25 December 2025 Online: 2025-12-17

CLC number:

U213.1

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	WANG Zizhao

Cite this article:

WANG Zizhao. Study on the Influence Factors of Strengthening Track Bed with Geocell[J]. Materials Reports, 2025, 39(24): 25010185-6.

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https://www.mater-rep.com/EN/10.11896/cldb.25010185 OR https://www.mater-rep.com/EN/Y2025/V39/I24/25010185

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