Single Piles in Liquefiable Ground, Softcover reprint of the original 1st ed. 2016 Seismic Response and Numerical Analysis Methods Springer Theses Series

This thesis focuses on the seismic response of piles in liquefiable ground. It describes the design of a three-dimensional, unified plasticity model for large post-liquefaction shear deformation of sand, formulated and implemented for parallel computing. It also presents a three-dimensional, dynamic finite element analysis method for piles in liquefiable ground, developed on the basis of this model,. Employing a combination of case analysis, centrifuge shaking table experiments and numerical simulations using the proposed methods, it demonstrates the seismic response patterns of single piles in liquefiable ground. These include basic force-resistance mode, kinematic and inertial interaction coupling mechanism and major influence factors. It also discusses a beam on the nonlinear Winkler foundation (BNWF) solution and a modified neutral plane solution developed and validated using centrifuge experiments for piles in consolidating and reconsolidating ground. Lastly, it studies axial pile force and settlement during post-earthquake reconsolidation, showing pile axial force to be  irrelevant in the reconsolidation process, while settlement is process dependent.

Introduction.- Unified plasticity model for large post-liquefaction shear deformation of sand and its numerical implementation.- Seismic response analysis of single piles in liquefiable ground.- Downdrag analysis of single piles in post-liquefaction reconsolidating ground.- Conclusions.

The author’s research focuses are on geotechnical earthquake engineering, pile foundation, soil liquefaction and constitutive modeling.

Honors
Summa cum laude, Ph.D., Beijing 2014
Summa cum laude, Ph.D., Tsinghua University 2014
Outstanding Ph.D. Thesis of Tsinghua University (First Class Award) 2014
Graduate National Scholarship 2012
Scholarship Award for Excellent Doctoral Student, Tsinghua University 2011
National First Class Scholarship (4 times) 2006, 2007,
2008, 2010
Best Paper Award in Geoshanghai 2010 International Conference 2010

Publications

Journal Papers
[1]Wang R., Zhang J.M., Wang G., 2014. A unified plasticity model for large post-liquefaction shear deformation of sand. Computers and Geotechnics. 59, 54-66.
[2]Wang R., Zhang J.M., Wang G. Multiaxial Formulation and Numerical Implementation of a Constitutive Model for the Evaluation of Large Liquefaction-induced deformation. China Earthquake Engineering Journal, 2013, 35(1), 91-97. (In Chinese)
[3]Wang R., Brandenberg S.J., 2013. Beam on nonlinear Winkler foundation and modified neutral plane solution for calculating downdrag settlement. Journal of Geotechnical and Geoenvironmental Engineering. 139 (9), 1433–1442.
[4]Zhang G., Wang R., Qian J.Y., Zhang J.M., Qian J.G., 2012. Effect study of cracks on behavior of soil slope under rainfall conditions. Soils and Foundations. 52 (4): 634–643.
[5]Wang R., Zhang J.M., Zhang G. Simplified Analysis Method for Structure-Pile Inertial Interaction in Ground with a Liquefied Top Layer. Rock and Soil Mechanics, 2012, 33(12), 3538-3544. (In Chinese)
[6]Wang R., Zhang J.M., Zhang G. Centrifuge Shaking Table Test on Single Pile in Lateral Spreading Soil. Engineering Mechanics, 2012, 29(10): 98-105. (In Chinese)
[7]Wang R., Zhang G., Zhang J.M., 2010. Centrifuge Modelling of Clay Slope with Montmorillonite Weak Layer under Rainfall Conditions. Applied Clay Science. 50, 386-394.
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