Effect of Seismic Loading on Variation of Pore Water Pressure During Pile Pull-Out Tests in Sandy Soils
محتوى المقالة الرئيسي
الملخص
Experimental model was done for pile model of L / D = 25 installed into a laminar shear box contains different saturation soil densities (loose and dense sand) to evaluate the variation of pore water pressure before and after apply seismic loading. Two pore water pressure transducers placed at position near the middle and bottom of pile model to evaluate the pore water pressure during pullout tests. Seismic loading applied by uniaxial shaking table device, while the pullout tests were conducted through pullout device. The results of changing pore water pressure showed that the variation of pore water pressure near the bottom of pile is more than variation near the middle of pile in all tests. The variation of pore water pressure after apply seismic loading is more than the variation before apply seismic loading near the middle of pile and near the bottom of pile and in loose and dense sand. Variation of pore water pressure after apply seismic loading and uplift force is less than the variation after apply seismic loading in loose sand at middle and bottom of pile.
تفاصيل المقالة
القسم
كيفية الاقتباس
المراجع
• Al-Ghanim, A.A.S. (2019). "Behavior of Geogrid Reinforced Piled Foundation Under Earthquake Loading", Ph.D. Thesis, Department of Civil Engineering, Alnahrain University, Baghdad, Iraq.
• Al-Taie A.J. and Albusoda B. (2019) Earthquake hazard on Iraqi soil: Halabjah earthquake as a case study. Geodesy and Geodynamics 10(3):196-204.
• ASTM D 4253 (2000). "Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table". American Society for Testing and Materials.
• ASTM D 4254 (2000). "Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density". American Society for Testing and Materials.
• ASTM D2216 (2010). "Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass". American Society for Testing and Materials.
• ASTM D2434. (2006). "Standard Test Method for Permeability of Granular Soils (Constant Head)". American Society for Testing and Materials.
• ASTM D2487 (2010). "Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)". American Society for Testing and Materials.
• ASTM D422. (2007). "Standard Test Method for Practice-Size Analysis of Soils". American Society for Testing and Materials.
• ASTM D4767. (2011). "Standard Test Method for Consolidation Undrained Triaxial Compression Test for Cohesive Soils". American Society for Testing and Materials.
• ASTM D845. (2014). "Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer". American Society for Testing and Materials.
• BS 1377. (1967). "Methods of Test for Soils for Civil Engineering Purposes: Chemical and Electro-Chemical Tests". British Standard Institution.
• Chen, W.F. and Lui, E.M. (2006). “Earthquake Engineering for Structural Design”, Published in 2006 by CRC Press Taylor & Francis Group.
• Deshmukh V.B., Dewaikar D.M. and Deepankar C. (2010) Computations of Uplift Capacity of Pile Anchors in Cohesion Less Soil. Acta Geotechnica, 5:87-94.
• M. W. O’Neill, Vipulanandan, and M. Ochoa (1990). Response of Tension Piles to Simulated Seismic Motion in saturated Fine Sand. Report UHCEE-90-09, Department of Civil and Environmental Engineering, University of Houston, Houston, Tex., 286 pp.
• Shelke A. and Patra N.R. (2009) Effect of Arching on Uplift Capacity of Single Pile. Journal of Geotechnical and Geological Engineering 27:365-377.
• Vanitha L, Patra NR and Chandra S 2007. “Uplift Capacity of Pile Group Anchors”. Journal of Geotechnical and Geological Engineering 25: 339-347.