Prof. Tatsunori Matsumoto
Prof. Matsumoto is now with Kanazawa University in Japan for nearly 34 years. He was educated at the Kanazawa University and received his Doctoral Degree from Kyoto University for his work on steel pipe piles in 1989. He has extensive research and practical experience on piled foundations and piled raft foundations. Prof. Matsumoto has a Shake Table Facility for the study of dynamic and earthquake type of behaviour of piled foundations. He has also worked on the centrifuge with pile groups and piled raft foundations in collaboration with Taisei Corporation. Prof. Matsumoto also has wide experience in the seismic design of raft and piled raft foundations. Prof. Matsumoto is one of the authors of the computer software PRAB—Piled Raft Analysis with Batter Piles. With this software piled raft foundation can be analyzed with vertical and horizontal loads as well as moment.
Univ.-Prof. Dr.-Ing. Jürgen Grabe
Prof. Grabe was educated in civil engineering at Hannover University/Germany and received his Doctoral Degree from Karlsruhe University/Germany for his work “Experimental and theoretical investigation of entire area compaction control using vibratory rollers” in 1992. Afterwards he worked in geotechnical consulting and construction companies for six years. In 1998 he became head of the Institute of Geotechnical Engineering and Construction Management at Hamburg University of Technology in Germany. He has extensive research and practical experience in physical, theoretical and numerical modelling in geotechnical engineering, especially in pile foundations, and marine geotechnics. Prof. Grabe has a complete soil mechanics laboratory and worked also on physical modelling in centrifuge in collaboration with University of Western Australia.
Prof. Grabe’s main research topics are geotechnical engineering in general, and marine geotechnics in particular. His methodical background covers physical modelling (1g model tests and ng model tests in collaboration with UWA), theoretical modelling (single and multiphase models for saturated and unsaturated soils based on continuum approach), numerical modelling (grid and mesh-based methods like FDM, FVM and FEM for continuum approach; meshfree methods like SPH for continuum approach, and DEM for discontinuum approach). Prof. Grabe and his research group produced 257 publications in national and international journals and conferences since 1998. From 2011 Prof. Grabe is vice president of Hamburg University of Technology, and is responsible for research in this function.
Prof. Der-Wen Chang
Prof. Chang has been the Geotechnical faculty member at The Department of Civil Engineering of Tamkang University (TKU), Taipei, Taiwan for over 22 years. He received Ph.D. in Civil Engineering at The University of Texas at Austin in 1991 and MS in Civil Engineering at Michigan State University in 1987. Prof. Chang has supervised the research work of over 60 Master Thesis and 3 Ph.D. Thesis at TKU, and published more than 190 articles as the Journal, Conf. papers and reports. Nearly all his research studies are related to numerical modeling and dynamic analyses for the geotechnical structures. His research experiences include NDT methods on pavements, seismic behaviors of the pile foundation, constitutive modeling of the soils, and recent study on the performance based design for the earth
structures. Prof. Chang is also the visiting Professor at University of Washington at Seattle, US in 2008 and LN Gumilyov Eurasian National University at Astana, Kazakhstan for research studies in 2010 and 2011. Other than the research works, Prof. Chang devotes himself a great deal to serve the communities. He involves heavily and indeed shows his good performance in the public works related to education and constructions. Prof. Chang is currently serving as the Int. Secretary General of Chinese Taipei Geotechnical Society, GC member at SEAGS and Editorial Panel for SEAGS/AGSSEA J. of Geotechnical Engineering, and TC212 member at ISSMGE.
Foreword
The theme of the 2014 June issue is Deep Foundations. Prof. Tatsunori Matsumoto at Kanazawa University, Japan and Prof. Jurgen Grabe at Hamburg University of Technology, Germany are the guest editors while Prof. Der-Wen Chang at Tamkang University, Taiwan is the in-house editor. Prof. Der Wen Chang also undertook all the administrative works related to the review of the articles and coordinating with the Guest Editors, Authors and Reviewers. After 18-month of preparations, thirteen papers were finally selected and are published in this Issue.
The content of this issue covers up mainly the task force studies 1~5 of ISSMGE TC212. More than half of the technical papers are based on observations of the experimental works. Axial Bearing Capacity and Static Cyclic Loading Behaviours of the Model Piles and/or Pile Group are respectively examined by Aoyama et al., Hwang et al. and Ünsever et al. Case studies on Response of Laterally Loaded Nonlinear Piles are shown by Wei Dong Guo. Seismic Performance of the Piles from Field Measurements is discussed by Yamashita et al. Seismic Soil-structure-foundation Behaviours with Liquefaction concerns from the Shaking Table Test with Numerical Comparisons are discussed in the study made by Zhang et al.. An Overview of the Deep Foundation Systems of the High-rise Buildings can be found by
Katzenbach and Dr. Leppla.
On the other hand, a number of numerical studies can be found on simulating the pile foundation behaviors. The topics include: Energy Pile with Feasible Material Modeling by Ma et al., Passive Loading Effects on Piles by Moormann and Aschrafi, Dynamic Load Testing on Pipe Piles Compared to Case Study by Phan Ta et al., Laterally Loaded Nonlinear Piles by Wei Dong Guo, Seismic Performance of the Piles using Reliability Method by Chang et al., and Bearing Behaviours of Pile Group and/or Piles respectively discussed by Wu and Yamamoto, Reul et al. and Ünsever et al.
It is the sincere wish of the editors that this issue can provide a good record for the advanced works on deep foundation research. Sincere gratitude is expressed by the editors to the delegates and the reviewers who have contributed tremendous time and efforts in making this Remarkable Issue feasible and to complete the work within very strict timelines.
Tatsunori Matsumoto
Jurgen Grabe &
Der Wen Chang
Acknowledgement
This special Issue on Deep Foundations as edited by Prof. Tatsunori Matsumoto, Prof. Jurgen Grabe and Prof. Der Wen Chang have thirteen excellent papers. Each paper being reviewed by at least two reviewers and some by more than two. The authors of the papers as per the Table of Contents and in that order are: C. Moormann and J. Aschrafi; Xiaolong Ma, Gang Qiu and Jürgen Grabe; L. Phan Ta , T. Matsumoto and H. Nguyen Hoang; K. Yamashita, T. Hashiba, H. Ito and T. Tanikawa; Y.S. Unsever, T. Matsumoto, S. Shimono and M.Y. Özkan; J.H. Hwang, Z.X. Fu, P.Y. Yeh and D.W. Chang; D.W. Chang, Y.H. Lin, H.C. Chao, S.C. Chu and C.H. Liu; Wei Dong Guo; Y. Wu and H. Yamamoto; F. Zhang, R. Oka, Y. Morikawa, Y. Mitsui, T. Osada, M. Kato and Y. Wabiko; S. Aoyama, L. Danardi, L. Bangan, W. Mao, S. Goto and I. Towhata; O. Reul, J. Bauer and C. Niemann; and R. Katzenbach and S. Leppla.
Indeed the papers are excellent and deal with: Numerical Investigation of Passive Loads on Piles in Soft Soils; Simulation of an Energy Pile using Thermo-hydro-mechanical Coupling and a Visco-hypoplastic Model; Studies on Dynamic Load Testing of an Open-ended Pipe Pile with a Case Study; Performance of Piled Raft Foundation Subjected to Strong Seismic Motion; Static Cyclic Load Tests on Model Foundations in Dry Sand; Axial Bearing Behaviour of a Model Pile in Sand under Multiple Static Cycles; Seismic PBD of Piles from Monte Carlo Simulation using EQWEAP Analysis with Weighted Intensities; Case Studies on Response of Laterally Loaded Nonlinear Piles; Analysis of the Effect of Pile Tip Shape on Soil Behaviour Around Pile; Shaking Table Test on Superstructure-foundation-ground System in Liquefiable Soil and its Numerical Verification; Model Loading Tests on the Bearing Behaviour of a Group Pile and Ground Deformation; the Bearing Behaviour of Pile Groups Subjected to Lateral Pressure due to Horizontal Soil Movements; Deep Foundation Systems for High-rise Buildings in Difficult Soil Conditions.
Thus this Issue is unique in its own way in covering, theory, and practice via laboratory and field tests on model piles and under full scale conditions. Both static and dynamic loading conditions as well as earthquake type of loading; also the laboratory tests also include shaking table tests.
The authors of the papers and the editors are to be congratulated for this master-piece of work . Both Prof Tatsunori Matsumoto and Prof Der Wen Chang are also the guest editors of our June 2011 Issue of the journal and this Issue have seen the contributions of Prof. Jurgen Grabe as well as a Guest Editor.
We hope this Issue of the Journal will be of immense value to researchers and practitioners.
