INFLUENCE OF PVD-ENHANCING SOFT SOIL GROUND ON THE ADJACENT BRIDGE PILES – A 3D FEM ANALYSIS

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  • Hong-quan Li School of Civil Engineering, Central South University, Changsha 410075, China
  • Li-min Wei School of Civil Engineering, Central South University, Changsha 410075, China
  • Sheng-yang Feng School of Environment and Safety Engineering, University of South China, Hengyang 421001, China
  • Zhi Chen School of Environment and Safety Engineering, University of South China, Hengyang 421001, China

DOI:

https://doi.org/10.14311/CEJ.2018.04.0045

Klíčová slova:

PVD, Soft soil, Bridge pile foundation, FEM

Abstrakt

The influence of prefabricated vertical drain (PVD)-enhancing soft soil on the adjacent bridge pile foundation is not sufficiently clear. The related studies are scarce and far behind the requirement of engineering practice. Three-dimensional finite element model (3D FEM) is established to investigate this important issue. Plastic drainage boards in the PVD are modelled by a user-defined element, which considers the axial force and permeability of the plastic drainage board, whereas its weight, shear, and torsion are not considered. The elastoplastic-consolidation coupled model is used for the soils. Field measured results of pore water pressure, ground settlement, and pile cap displacement are used to validate the 3D FEM with good accuracy. A number of useful conclusions can provide guidelines for similar projects and inform designers of the adverse effects of PVD-enhancing soft soil ground on the adjacent bridge pile foundation.

Stažení

Data o stažení nejsou doposud dostupná.

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Stahování

Publikováno

2018-12-31

Jak citovat

Li, H.- quan, Wei, L.- min, Feng, S.- yang, & Chen, Z. (2018). INFLUENCE OF PVD-ENHANCING SOFT SOIL GROUND ON THE ADJACENT BRIDGE PILES – A 3D FEM ANALYSIS. Stavební Obzor - Civil Engineering Journal, 27(4). https://doi.org/10.14311/CEJ.2018.04.0045

Číslo

Vol 27 No 4 (2018)

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