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Model testing of the response of stabilizing piles in landslides with upper hard and lower weak bedrock
- Source :
- Engineering Geology. 204:65-76
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- The behavior of stabilizing piles with different embedded lengths in bedrock with a hard upper layer and a weak lower layer is examined using physical model tests. Based on the geological model of the landslide with bedrock with a hard upper layer and a weak lower layer, the pile–landslide physical model is developed and includes the data collection system, the pile–landslide model and the loading system. The real-time deformation and moment of the stabilizing pile is obtained in the process of loading at the trailing edge of the landslide for different percentages of hard bedrock. The test results indicate that the percentage of hard bedrock has a strong influence on the deformation and moment of the stabilizing pile embedded in bedrock with a hard upper layer and a weak lower layer. A higher percentage of hard bedrock can result in a greater maximum bending moment of the stabilizing pile and a smaller displacement at the stabilizing pile head, and vice versa. The results also show that 40% of hard bedrock can be considered the critical condition in bedrock with a hard upper layer and a weak lower layer. The percentage of hard bedrock has a limited influence on the deformation of the stabilizing pile when the percentage is greater than 40%. Moreover, four tests with stabilizing piles with different embedded lengths are conducted to investigate the most suitable embedded length in the bedrock with a hard upper layer and a weak lower layer. The results indicate that 28.5 cm is a reasonable embedded length for the stabilizing pile in the two-layered bedrock with a hard rock percentage of 20%.
- Subjects :
- geography
geography.geographical_feature_category
Deformation (mechanics)
Bedrock
0211 other engineering and technologies
Geology
Landslide
02 engineering and technology
010502 geochemistry & geophysics
Geotechnical Engineering and Engineering Geology
01 natural sciences
Bending moment
Trailing edge
Head (vessel)
Geotechnical engineering
Pile
Displacement (fluid)
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 00137952
- Volume :
- 204
- Database :
- OpenAIRE
- Journal :
- Engineering Geology
- Accession number :
- edsair.doi...........9c94144659dc7ff8849c8cedf7825e57