Abstract
Groundwater lowering has brought a great impact on high speed railway. It has developed a measurable regional settlement of subgrade and also made a negative impact on piles under subgrade. In this paper, two structure types, namely P-R structure and P-N structure under subgrade have been considered at different groundwater lowering rates. Plaxis 3D is employed to assess subgrade center point's settlement, piles' negative skin friction, increment of skin friction in piles and piles' axial force. From the results, we can figure that groundwater lowering indeed has a negative impact on subgrade and the maximum negative skin friction of piles can increases up to 30-40 kN/m. The axial force in piles can be twice as initial conditions.
Original language | English |
---|---|
Pages (from-to) | 1350-1357 |
Number of pages | 8 |
Journal | Procedia Engineering |
Volume | 143 |
DOIs | |
Publication status | Published - 2016 |
Externally published | Yes |
Event | 3rd International Conference on Transportation Geotechnics, ICTG 2016 - Guimaraes, Portugal Duration: 4 Sept 2016 → 7 Sept 2016 |
Keywords
- groundwater lowering
- pile-net structure
- pile-plate structure
- skin friction
ASJC Scopus subject areas
- General Engineering