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Editors-in-Chief
    Prof. Poul V. Lade
    Department of Civil Engineering
    The Catholic University of America, USA
    Prof. Jong-ho Shin
    Dept. of Civil Engineering
    Konkuk University, Korea
    Dr. Gopal Madabhushi
    Department of Engineering
    University of Cambridge, UK
Associate Editor
    Prof. Gye-Chun Cho
    Dept. of Civil & Environmental Engineering
    Korea Advanced Institute of Science & Technology, Korea
Managing Editor
    Prof. Chang-Koon Choi
    Dep. of Civil & Environmental Engineering
    Korea Advanced Institute of Science & Technology, Korea

ISSN: 2005-307X(Print), ISSN: 2092-6219(Online)
 Impact factor:0.244(2012)
Vol 6/7(12 issues) for 2014, Monthly
Aims and Scope
The Geomechanics and Engineering aims at opening an easy access to the valuable source of information and providing an excellent publication channel for the global community of researchers in the geomechanics and its applications.
Typical subjects covered by the journal include:
Analytical, computational, and experimental multiscale and interaction mechanics
Computational and Theoretical Geomechnics
Foundations
Tunneling
Earth Structures
Site Characterization
Soil-Structure Interactions
Editorial Board
Prof. Tarek Abichou
Department of Civil & Environmental Eng
Florida State Univeristy
USA

Prof. Richard J. Bathurst
Civil Engineering Department
Royal Military College of Canada
Canada

Prof. Dennes T. Bergado
School of Eng and Tech
Asian Inst of Technology
Thailand

Prof. J.C. Chai
Department of Civil Engineering
Saga University
Japan

Prof. Claudio Cherubini
Dept of Civil and Environmental Eng
Technical Univ of Bari
Italy

Prof. Yean Khow Chow
Department of Civil Engineering
National University of Singapore
Singapore

Prof. Jian Chu
School of Civil and Environmental Engineering
Nanyang Technological University
Singapore

Prof. Daniel Dias
Civil Engineering
INSA de Lyon
France

Dr. Robin Fell
University of New South Wales
Syendy, NSW 2052, Australia

Prof. Anthony T.C. Goh
School of Civil & Environmental Eng
Nanyang Technological University
Singapore

Prof. I. M. Idriss
Dept of Civil and Environmental Eng
Univ of California at Davis
USA

Prof. Buddhima Indraratna
School of Civil Engineering
University of Wollongong
Australia

Dr. Akbar Javadi
Sch of Eng, Computing & Mathematics
University of Exeter
UK

Prof. Dong-Sheng Jeng
Geotechnical Engineering
Griffith University
UK

Prof. Seok Won Jeon
Schl of Civil, Urban & Geosystem Eng
Seoul Natl University
Korea

Prof. Takaji Kokusho
Department of Civil Engineering
Chuo University
Japan

Prof. Jyant Kumar
Civil Engineering Department
Indian Inst of Sci, Bangalore
India

Prof. Junhwan Lee
School of Civil & Environmental Eng
Yonsei University
Korea

Prof. Chun Fai Leung
Department of Civil Engineering
National Univ of Singapore
Singapore

Prof. Ning Lu
Department of Civil Engineering
Colorado School of Mines
USA
Prof. Radoslaw L. Michalowski
Department of Civil Engineering
University of Michigan
USA
Prof. Harry G. Poulos
Geotechnical Engineering
Coffey Geotechnics
Australia

Prof. Anand J. Puppala
Dept of Civil and Environmental Eng
The Univ of Texas at Arlington
USA

Prof. Harianto Rahardjo
Sch of Civil and Environmental Eng
Nanyang Technological Univ
Singapore

Prof. Debasis Roy
Dept of Civil Engineering
Indian Inst of Technology
India

Prof. Julie Q. Shang
Dept of Civil & Environmental Eng
The University of Western Ontario
Canada

Prof. D.N. Singh
Department of Civil Engineering
Indian Inst of Tech, Bombay
India

Prof. V. Sivakumar
School of Civil Engineering
The Queens University of Belfast
UK

Prof. Kenichi Soga
Civil Engineering
University of Cambridge Cambridge
UK

Prof. Erxiang Song
Department of Civil Engineering
Tsinghua University
China

Prof. Abdul-Hamid Soubra
Inst de Rech en Genie Civil et Meca
Universite de Nantes
France

Prof. Luis E. Vallejo
Civil and Environmental Engineering
University of Pittsburgh
USA

Prof. Yu-Hsing Wang
Department of Civil Engineering
The Hong Kong Univ. of Sci. & Tech.
Hong Kong

Prof. Ron C.K. Wong
Dept of Civil Engineering
University of Calgary
Canada

Prof. Jun Yang
Department of Civil Engineering
The University of Hong Kong
Hong Kong

Prof. Jian-Hua Yin
Department of Civil & Structural Engineering
The Hong Kong Polytechnic Univ.
Hong Kong

Prof. Z. Q. Yue
Department of Civil Engineering
The University of Hong Kong
Hong Kong

Prof. Limin Zhang
Department of Civil Engineering
The Hong Kong Univ of Sci & Tech
Hong Kong

Prof. Xiong Zhang
Dept of Civil & Environmental Eng
University of Alaska Fairbanks
USA

Prof. Hehua Zhu
School of Civil Engineering
Tongji University
China

Instructions to Authors

1. Submission of the paper
Authors are asked to submit manuscripts in PDF format electronically through the Techno-Press Manuscript Upload System (TeMUS) (http://www.techno-press.org/papers). Exceptionally, the special issue papers may be directly submitted to the Guest Editor. If you have difficulties in using TeMUS, please contact us at[technop3@chol.com]. On receiving submitted papers, the system will issue the paper ID and Password to the corresponding author which may be conveniently used to check the status of submitted papers.
2. Preparation of the manuscript
General : The manuscripts should be in English and typed with single column and single line spacing on single side of A4 paper. Submitted papers will be published in three categories, i.e., 1) Regular technical paper, 2) Review papers and 3) Discussions. The first page of an article should contain; (1) a title of paper which well reflects the contents of the paper (Arial, 16pt), (2) all the name(s) and affiliations(s) of authors(s) (Arial, 12pt), (3) an abstract of 100~250 words (Times New Roman, 11pt), (4) 5-10 keywords following the abstract, and (5) footnote (personal title and email address of the corresponding author (required) and other authors' (not mandatory)). The paper should be concluded by proper conclusions which reflect the findings in the paper. The normal length of the technical paper should be about 14-20 journal pages. There will be no page charges and no other fees unless the author wishes arrangements to provide an open access to his article. Authors are advised to read the details in the Appendix A for guide and Appendix B for a template of the instructions to authors for the format of the first page of the paper.
Tables and figures : Tables and figures should be consecutively numbered and have short titles. They should be referred to in the text as following examples (e.g., Fig. 1(a), Figs. 1 and 2, Figs. 1(a)-(d) / Table 1, Tables 1-2), etc. Tables should have borders (1/2pt plane line) with the captions right before the table. Figures should be properly located in the text as an editable image file (.jpg) with captions on the lower cell. All of the original figures are required at the end of the manuscript for reference in editing.
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References : A list of references which reflect the current state of technology in the field locates after conclusions of the paper. For details to prepare the list of references and cite them in the text, authors are advised to follow the introduction and the sample list in the Appendix A of the instruction.
3. Review
All the submitted papers will undergo a peer-review process, and those papers positively recommended by at least two expert reviewers will be finally accepted for publication in the Techno-Press Journals or after any required modifications are made.
4. Proofs
Proofs will be sent to the corresponding author to correct any typesetting errors. Alterations to the original manuscript will not be accepted at this stage. Proofs should be returned within 48 hours of receipt.
5. Copyright
Submission of an article to a Techno-Press Journal implies that it presents the original and unpublished work, and not under consideration for publication elsewhere. On acceptance of the submitted manuscript, it is implied that the copyright thereof is transferred to the Techno-Press. The Transfer of Copyright Agreement may also be submitted.
6. Ethics
For the policies on the research and publication ethics not stated in this instructions, International standards for editors and authors (http://publicationethics.org/international-standards-editors-and-authors) can be applied.

*Appendix A. Authors' Guide
*Appendix B. Template
*Appendix C. Index
Sample issue
Volume 4, Number 1, March 2012
  • Site specific ground motion simulation and seismic response analysis for microzonation of Kolkata
    Narayan Roy and R.B. Sahu
    Abstract; Full Text (816K)

Abstract
The spatial variation of ground motion in Kolkata Metropolitan District (KMD) has been estimated by generating synthetic ground motion considering the point source model coupled with site response analysis. The most vulnerable source was identified from regional seismotectonic map for an area of about 350 km radius around Kolkata. The rock level acceleration time histories at 121 borehole locations in Kolkata for the vulnerable source, Eocene Hinge Zone, due to maximum credible earthquake (MCE) moment magnitude 6.2 were generated by synthetic ground motion model. Soil investigation data of 121 boreholes were collected from the report of Soil Data Bank Project, Jadavpur University, Kolkata. Surface level ground motion parameters were determined using SHAKE2000 software. The results are presented in the form of peak ground acceleration (PGA) at rock level and ground surface, amplification factor, and the response spectra at the ground surface for frequency 1.5 Hz, 3 Hz, 5 Hz and 10 Hz and 5% damping ratio. Site response study shows higher PGA in comparison with rock level acceleration. Maximum amplification in some portion in KMD area is found to be as high as 3.0 times compared to rock level.

Key Words
synthetic ground motion; site response; time history; PGA; response spectra; amplification.

Address
Civil Engineering Department, Jadavpur University, Kolkata, India

  • Analytical solution for undrained plane strain expansion of a cylindrical cavity in modified cam clay
    Vincenzo Silvestri and Ghassan Abou-Samra
    Abstract; Full Text (1163K)

Abstract
This paper presents the results of analytical and numerical analyses of the effects of performing a pressuremeter test or driving a pile in clay. The geometry of the problem has been simplified by the assumptions of plane strain and axial symmetry. Pressuremeter testing or installation of driven piles has been modelled as an undrained expansion of a cylindrical cavity. Stresses, pore water pressures, and deformations are found by assuming that the clay behaves like normally consolidated modified Cam clay. Closed-form solutions are obtained which allow the determination of the principal effective stresses and the strains around the cavity. The analysis which indicates that the intermediate principal stress at critical state is not equal to the mean of the other two principal stresses, except when the clay is initially isotropically consolidated, also permits finding the limit expansion and excess pore water pressures by means of the Almansi finite strain approach. Results are compared with published data which were determined using finite element and finite difference methods.

Key Words
undrained cylindrical expansion; plane strain; modified Cam clay; stress-strain curves; analytical and numerical analyses; comparisons.

Address
Department of Civil, Geological, and Mining Engineering, Ecole Polytechnique, P. B. 6079, Station Centre-Ville, Montreal, Quebec, Canada H3C 3A7

  • Numerical validation of Multiplex Acceleration Model for earthquake induced landslides
    Lu Zheng*, Guangqi Chen, Kouki Zen and Kiyonobu Kasama
    Abstract; Full Text (1195K)

Abstract
Due to strong ground motion of earthquake, the material in the landslide can travel a significant distance from the source. A new landslide model called Multiplex Acceleration Model (MAM) has been proposed to interpret the mechanism of long run-out movement of this type of landslide, considering earthquake behaviors on slope and landslide materials. In previous study, this model was verified by a shaking table test. However, there is a scale limitation of shaking table test to investigate MAM in detail. Thus, numerical simulation was carried out in this study to validate MAM under full scale. A huge rock ejected and A truck threw upwards by seismic force during Wenchuan Earthquake (Ms. 8.0) was discussed based on the simulation results. The results indicate that collisions in P-phase of earthquake and trampoline effect are important behaviors to interpret the mechanism of long run-out and high velocity. The results show that MAM is acceptable and applicable.

Key Words
long run-out landslides; earthquake; Multiplex Acceleration Model; trampoline effect; UDEC

Address
Department of Civil and Structural Engineering, Kyushu University, Fukuoka, Japan

  • Effect of suction on volume change and shear behaviour of an overconsolidated unsaturated silty soil
    A.R. Estabragh and A.A. Javadi
    Abstract; Full Text (794K)

Abstract
This paper presents the results of an experimental study on the effect of suction on compressibility and shear behaviour of unsaturated silty soil under various types of loading. A series of laboratory experiments were conducted in a double-walled triaxial cell on samples of a compacted silty soil. In the experiments the soil samples were subjected to isotropic consolidation followed by unloading and subsequent reloading under constant suction and prescribed overconsolidated ratio. The experimental results are presented in the context of an elasto-plastic model for unsaturated soil. The effects of suction on mechanical behaviour of unsaturated silty soil are presented and discussed. It is shown that increasing suction affects the shear behaviour of unsaturated soils, but there is a limit beyond which, further increase in suction will not result in any significant change in the behaviour.

Key Words
unsaturated soil; suction; overconsolidation ratio; triaxial cell

Address
A.R. Estabragh : Faculty of Soil and Water Engineering, University of Tehran, PO BOX 4411 Karaj 31587-77871, Iran A.A. Javadi : Computational Geomechanics Group, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Devon, EX4 4QF, UK

  • Settlement analysis of viscoelastic foundation under vertical line load using a fractional Kelvin-Voigt model
    Hong-Hu Zhu, Lin-Chao Liu, Hua-Fu Pei and Bin Shi
    Abstract; Full Text (889K)

Abstract
Soil foundations exhibit significant creeping deformation, which may result in excessive settlement and failure of superstructures. Based on the theory of viscoelasticity and fractional calculus, a fractional Kelvin-Voigt model is proposed to account for the time-dependent behavior of soil foundation under vertical line load. Analytical solution of settlements in the foundation was derived using Laplace transforms. The influence of the model parameters on the time-dependent settlement is studied through a parametric study. Results indicate that the settlement-time relationship can be accurately captured by varying values of the fractional order of differential operator and the coefficient of viscosity. In comparison with the classical Kelvin-Voigt model, the fractional model can provide a more accurate prediction of long-term settlements of soil foundation. The determination of influential distance also affects the calculation of settlements.

Key Words
soil foundation; fractional viscoelastic model; the Flamant-Boussinesq solution; settlement; Laplace transform

Address
Hong-Hu Zhu and Bin Shi : School of Earth Sciences and Engineering, Nanjing University, Nanjing, China Lin-Chao Liu : School of Civil Engineering, Xinyang Normal University, Xinyang, China Hua-Fu Pei : Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China

Table of Contents
       
 
  • 2014  Volume 7      No. 1      No.2    No.3
     
  • 2014  Volume 6      No. 1      No.2    No.3    No.4    No.5    No.6
     
  • 2013  Volume 5      No. 1      No.2    No.3    No.4    No.5    No.6
     
  • 2012  Volume 4      No. 1      No.2    No.3    No.4
     
  • 2011  Volume 3      No. 1      No.2    No.3    No.4
     
  • 2010  Volume 2      No. 1      No.2    No.3    No.4
     
  • 2009  Volume 1      No. 1      No.2    No.3    No.4
           
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