TITLE:
Roadbed Subsidence Mechanisms under the Driven of Penetration-Soak Coupling
AUTHORS:
Hongkai Chen, Dan Liang
KEYWORDS:
Road Engineering, Subsidence Mechanism, Penetration-Soaking Coupling, Soil Roadbed
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.5 No.2,
February
14,
2017
ABSTRACT:
Roadbed subsidence is one of the main types of highway flood damage, the periodic fluctuation of the river water level and the softening of the subgrade soils by the river water immersion for a long time are the main inducement factors of the subgrade subsidence. Based on the theory of absorbing water infiltration in unsaturated soil, calculation formula of dynamic stability coefficient of subgrade is established by using the Swedish arc method. Example analysis shows that, soil roadbed suffers the water permeability-soak, road-bed’s stability reduce with the time, and leads to roadbed subsidence. Research results for improving roadbed subsidence water logging mechanism understanding level have a positive meaning.