- Characterization of Model Uncertainty in Immediate Settlement Calculations for Spread Footings on Clays
- A.W. Stuedlein ; A.W. Strahler
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Settlements ; Site Characterization & In-situ Testing (General) ; Numerical & Constitutive Modeling
PDF |
- Simultaneous interpretation of CPT/DMT tests to ground characterisation
- K. Garbulewski ; S. Rabarijoely
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Cone Penetration Testing (CPT)
PDF |
- Application of The Tangent Modulus Method in Nonlinear Settlement Analysis of Sand Foundation
- E.-Q. Wang ; Y.-C. Zhang ; Y.-D. Luo ; G.-H. Yang
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Settlements ; Site Characterization & In-situ Testing (General)
PDF |
- A new test field in sulphide clay with test embankments for study of compression properties
- M. Andersson ; B. Westerberg
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Road Embankments ; Settlements ; Site Characterization & In-situ Testing (General)
PDF |
- Compacted soil columns for foundations on collapsible soils. Laboratory and in-situ experimental study
- P Uta ; S. Manea ; E. Olinic ; C. Burlacu
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Laboratory Testing ; Site Characterization & In-situ Testing (General) ; Ground Improvement
PDF |
- Large Diameter Long Bored Piles in the Mekong Delta
- Bengt H. Fellenius ; Nguyen Minh Hai
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2013 , Volume: 2
- Pile Foundations ; Site Characterization & In-situ Testing (General)
- Keywords: Mekong Delta ; O-cell test ; strain-gage evaluation ; Bored piles ; shaft resistance ; Settlement ; beta coefficient
- Abstract
Static loading tests, O-cell tests, were performed on two long, strain-gage instrumented, bored piles in HoChiMinh City, Vietnam, where a series of twelve apartment towers were to be constructed. The test piles were constructed to 76 and 91 m depth and tested to maximum O-cell loads of 10 and 18 MN, respectively. For both piles, the O-cell level was placed at a depth of about 20 % of the pile length above the pile toe. The soil profile consisted of very soft organic clay to about 10 to 15 m depth underlain by firm to stiff clayey soil to about 25 to 45 m depth. Hereunder, the soil consisted of a compact to dense sandy silt. Neither of the tests was able to fully engage the shaft resistance of the piles above the O-cell level, but did so below the O-cell level. Back-calculation of the load distributions determined from the strain-gage measurements showed the shaft resistance, even where fully mobilized, to be very small: the beta-coefficient applied in an effective stress analysis was only about 0.13 to 0.14. The evaluations of shaft resistance development showed a maximum shear resistance to occur after a movement of only 3 to 4 mm, after which the response became plastic and strain-softening. The toe resistance was very low because the construction had left soil debris at the bottom of the drilled hole. Ongoing regional settlement leads to concerns about the possibility for the production piles to have a similarly low toe resistance. This would locate the neutral plane of the shorter piles in settling soil and create a downdrag situation for the piled foundation. PDF |
- Special Features of Creep of Clayey Soils
- Z.Y. Orazalin ; E.E. Orazaly ; A.A. Zhakulina ; A.S. Zhakulin
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Foundation Design / Construction ; Settlements ; Laboratory Testing ; Site Characterization & In-situ Testing (General)
PDF |
- 1st General Report for TC 203: Seismic response of soils, foundations and geotechnical structures
- J.-F. Semblat ;
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Geotechnical Earthquake Engineering ; Landslides ; Liquefaction Engineering ; Site Characterization & In-situ Testing (General) ; Numerical & Constitutive Modeling
PDF |
- Field Test on Group Piles under Machine Induced Coupled Vibration
- Sanjit Biswas ; Shiva Shankar Choudhary ; Bappaditya Manna ; Dilip Kumar Baidya
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2013 , Volume: 3
- Site Characterization & In-situ Testing (General) ; Pile Foundations ; Laboratory Testing ; Numerical & Constitutive Modeling
- Keywords: Dynamic ; group pile ; Coupled vibration ; nonlinear ; continuum approach ; dynamic field test
- Abstract
Dynamic response characteristics of reinforced concrete group piles with embedded pile-cap condition are investigated in the field under varying levels of coupled harmonic excitations. The piles are constructed by bored cast-in-situ method. The site is located at Indian Institute of Technology Kharagpur, West Bengal, India. The soil properties are determined by laboratory tests on both disturbed and undisturbed soil samples collected from various boreholes at the site. Two in-situ tests, namely, standard penetration tests to determine N-value and cross hole seismic tests for determining the shear-wave velocity of soil are conducted at various depths of soil layer. Forced coupled vibration tests are conducted on pile groups using Lazan type mechanical oscillator with four different eccentric moments. Both the horizontal and rocking motions of pile groups are measured simultaneously for different operating frequencies of oscillator. Two resonant peaks are observed at two different frequencies. It is also observed that as the eccentric moment increases, the resonant amplitude increases, but the natural frequency decreases for both horizontal and rocking responses. The test results on piles are then compared with the numerical approach with two different soil-pile models – (i) A linear visco-elastic medium composed of outer infinite region and an inner weaker layer with reduced shear modulus, and (ii) a boundary zone with parabolic variation of shear modulus and with a non-reflective interface. From the comparison between the test results and numerical results using the first model it is found that the prediction of nonlinear response of the pile foundation is in good agreement with the test results. For the second model, the numerical results are not found satisfactory when compared to the test results. The nonlinear parameters like separation length, shear modulus ratio, weak zone damping factor and thickness ratio are also predicted for the group piles under coupled vibration. PDF |
- Design prediction of the strengthened foundation base deformation by field tests data
- N. Gotman ; A. Gotman
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Foundation Design / Construction ; Site Characterization & In-situ Testing (General)
PDF |
- Comparison of Static and Dynamic Pile Load Tests at Thi Vai International Port in Viet Nam
- Le Phan Ta ; Tatsunori Matsumoto ; Ha Nguyen Hoang
- Book Title / Journal: International Journal of Geoengineering Case Histories
- Year: 2013 , Volume: 3
- Site Characterization & In-situ Testing (General) ; Instrumentation ; Pile Foundations ; Soil Dynamics In-Situ
- Keywords: static load test ; dynamic load test ; steel pipe pile ; spun concrete pile ; wave matching analysis ; pile foundation quality control ; berth area
- Abstract
A berth structure, 600 m long and 60 m wide, for handing of loaded containers was completed in early 2013 as one of the facilities of Thi Vai International Port located on the bank of the Cai Mep river in Viet Nam. The berth is a quay structure supported by 885 driven spun concrete piles and 156 driven steel pipe piles. Four test piles, named TSC1, TSC2, TSP1 and TSP2, with different pile lengths and diameters were driven at the project site in 2011 prior to construction of working piles. Static load tests (SLTs) were conducted for the test piles to determine the design pile capacity. Dynamic load tests (DLTs) were also carried out for the TSC1 and TSP1 in order to obtain information for selecting the pile driving system used for the working piles and to examine the applicability of wave matching analysis (WMA) to derive the static load-displacement curves. A wave matching analysis program developed by the authors was employed in the WMAs. Good agreement between the derived and measured static responses was obtained for the TSC1 and TSP1. The identified soil parameters obtained from the final WMA of the TSC1 and TSP1 were used to predict the static responses of the TSC2 and TSP2. The predicted load-displacement curves were reasonable matches to the measured ones, indicating that the identified soil parameters of the test piles could be used for prediction of the static responses of other constructed piles. Moreover, pile driving termination criterion in this site was examined through the test piling. PDF |
- Risk minimisation in construction of upstream tailings storage facilities based on in-situ testing
- R. Espinace ; G. Villavicencio ; J Palma ; A Fourie
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Risk & Reliability ; Tailings Dams ; Site Characterization & In-situ Testing (General)
PDF |
- Methodological approach for the stability analysis of the Po river banks
- G. Vannucchi ; L. Tonni ; M. Marchi ; C. Madiai ; G. Gottardi
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Geotechnical Earthquake Engineering ; Seismic Slope Stability ; Site Characterization & In-situ Testing (General)
PDF |
- Comparison of permeability testing methods
- G. Varga ; A. Mahler ; T. Huszák ; A. Takács ; L. Nagy
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Laboratory Testing ; Site Characterization & In-situ Testing (General)
PDF |
- RotoStaf®, a Major Improvement in Self Bored Menard Pressuremeter
- G. Arsonnet ; J.- P. Baud ; M. Gambin
- 18th International Conference on Soil Mechanics and Geotechnical Engineering (Paris)
- Year: 2013
- Pressuremeter
PDF |