Vol. 52 No. 1 March 2021

Performance of Helix Piled Raft Foundation in Tropical Fibrous Peat Soil Under Traffic Loads

by A. Arsyad, A. B. Muhiddin1, T. Harianto, E. Budianto, P. Sangle, and A. B. Firmansyah

ABSTRACT: This paper presents the investigation of settlement based performance of helix piled raft foundation under traffic load through analytical and numerical methods. The analytical method is based on the concept of PDR analysis of piled raft where the stiffness of helix piled raft is computed from the stiffness of helix pile and raft with a certain helix piled – raft interaction factor. In this study, the stiffness of helix pile to peat soil is estimated by using a modified Randolph and Wroth equation, incorporating the mechanical behavior of helix pile. On the other hand, the stiffness of raft is determined by using Richart et al equation. In the numerical model, 3-dimension FEM model of helix piled raft is undertaken in which helix pile is modeled as fixed end anchor, and raft as a plate above soft peat soil. The effect of helix pile number on the bearing capacity and settlement of helix piled raft foundation system is investigated. The results reveal that the stiffness of helix pile is too small compared to the stiffness of raft with the ratio from 1/6 to 1/4. The helix pile stiffness is much influenced by the number of helice and the radius of helice in a single helix pile. Since the stiffness of helix pile is small, such critical number of helix piles is needed to have effect on the foundation system. Below this number, helix pile is insignificant to have effect in the helix piled raft foundation system, and the elasticity of the raft plays important role. In general, however, it is obvious that the increasing number of helix piles can decrease the elastic settlement of helix piled raft foundation when it is subjected with traffic load. In the stiffness ratio of helix pile to raft at 1/6, the increasing number of helix pile can reduce the settlement up to 80%, whereas that in the stiffness ratio helix pile to raft at ¼ can reduce the settlement by 65%. These finding s would beneficial for development of alternative helix piled raft foundation for road infrastructure in tropical fibrous peat soil.

KEYWORDS: Tropical fibrious peat soil, Helix piled raft, Stiffness, Elastic settlement.

DOI: 10.14456/seagj.2021.25

SPECIAL ISSUE ON OFFSHORE AND COASTAL GEOTECHNICS

Editors: Shinji Sassa, Poul V. Lade, Li-zhong Wang, Y.K. Chow, Dong Sheng Jeng, Christophe Gaudin & Fuping Gao

Sponsored by: Asian Institute of Technology

Contents and Abstracts

Recent Advances in Seabed Liquefaction and Its Implications for Marine Structures
By B. Mutlu Sumer

Eulerian–Lagrangian Modeling of Current-Induced Coastal Sand Dune Migration
By R. Sun, J. Wang, Y. Sakai and H. Xiao

Numerical Study of the Penetration Mechanism and Kinematic Behaviour of Drag Anchors Using a Coupled Eulerian-Lagrangian Approach
By Haixiao Liu and Yanbing Zhao

Cyclic Pore Pressure Generation in Silty Soils under the Action of Combined Waves and Current
By Yi-Fa Wang, Fu-Ping Gao, and Wen-Gang Qi

A Model for Predicting Pipeline Sinkage Induced by Tunnel Scour
By Chengcai Luo, Hongwei An, Liang Cheng and David White

Predicting Spudcan Extraction Resistance in Soft Clay
By Omid Kohan, Christophe Gaudin, Mark J. Cassidy, and Britta Bienen

FE Procedure for Foundation design of Offshore Structures – Applied to Study a Potential OWT Monopile Foundation in the Korean Western Sea
By H.P. Jostad, G. Grimstad, K.H. Andersen, M. Saue, Y. Shin, and D. You

Compressibility as an Indicator of Liquefaction Potential
By M. Murat Monkul, Poul V. Lade, Ehsan Etminan, Aykut Senol

Centrifuge Modelling of the Seismic Responses of a Gently Sloped  Liquefiable Sand Deposit Confined within Parallel Walls
By C.J. Lee, W.Y. Chung, and W.Y. Hung

Eulerian Finite Element Analysis for Uplift Capacity of Circular Plate Anchors in Normally Consolidated Clay
By Z. Chen, K. K. Tho, C. F. Leung and Y. K. Chow

Restoration Method of Artificial Tidal Flat by Use of Pressure Injection of Slurry Dredge Clay
By Takahiro Kumagai, Takashi Tsuchida, Changjin Ko and Hiroaki

Tsunami-Seabed-Structure Interaction from Geotechnical and Hydrodynamic Perspectives
By S. Sassa

Feature Storey on “Challenges in the Design of Tall Building Foundations”
By Harry G. Poulos

SPECIAL ISSUE ON CENTRIFUGE MODELLING OF GEOTECHNICAL INFRASTRUCTURE

Editors: B.V.S. Viswanadham, Christophe Gaudin & Tom Schanz

Sponsored by: Asian Institute of Technology

Contents and Abstracts

Part I: Centrifuge-based Physical Modeling

Centrifuge Modelling of Improved Ground
By M. Kitazume, Y. Morikawa and S. Nishimura

Simulation of Soil Movement in Geotechnical Centrifuge Testing – Deep Excavations, Tunnelling, Deposit
By D. König, O. Detert and T. Schanz

Run-out of Sensitive Clay Debris: Significance of the Flow Behavior of Sensitive Clays
By V. Thakur and D. Nigussie

Verification of the Generalized Scaling Law for Flat Layered Sand Deposit
By T. Tobita, S. Escoffier, J. L. Chazelas and S. Iai

Performance of Rail Embankments Constructed with Coal Ash as a Structural Fill Material: Centrifuge Study
By B.V.S. Viswanadham and V.K. Mathur

Field Scale Tests for Determination of Pullout Capacity of Suction Pile Anchors Under Varying Loading Conditions
By Vijaya Ravichandran, R. Ramesh, S. Muthukrishna Babu, G.A. Ramadass, .M.V.Ramanamoorthy and M.A. Atmanand

Part 2: Contributed Papers

A Novel Mobile Information System for Risk Management of Adjacent Buildings in Urban Underground Construction
By Hanh Quang Le and Bin-Chen Benson Hsiung

Comparison Between Design Methods Applied to Segmental Tunnel Linings
By N.A. Do, D. Dias, P.P. Oreste, I. Djeran-Maigre

Challenging Construction Projects Related to Urban Tunnels
By R. Katzenbach and S. Leppla

Bulk Compression of Dredged Soils by Vacuum Consolidation Method Using Horizontal Drains
By Hiroshi Shinsha and Takahiro Kumagai

Mechanical Behavior of Energy Piles in Dry Sand
By A.M. Tang, J.M. Pereira, G. Hassen, N. Yavari

Estimating Side Resistance of Bored Pile in Residual Soils
By Mutiasani Dianmarti Kusuma and Eng-Choon Leong

Seismic Response of Geosynthetic Reinforced Earth Embankment by Centrifuge Shaking Table Tests
by W.Y. Hung , J.H. Hwang , C.J. Lee

Geotechnical Engineering Journal of the SEAGS & AGSSEA

SPECIAL ISSUE ON DEEP FOUNDATION

Editors: Prof. Tatsunori Matsumoto, Prof. Jurgen Grabe &
Prof. Der Wen Chang

Sponsored by: Asian Institute of Technology

Contents and Abstracts

Numerical Investigation of Passive Loads on Piles in Soft Soils
by C. Moormann and J. Aschrafi

Numerical Simulation of an Energy Pile Using Thermo-Hydro-Mechanical Coupling and a Visco-Hypoplastic Model
by Xiaolong Ma, Gang Qiu, Jürgen Grabe

Numerical Studies on Dynamic Load Testing of an Open-ended Pipe Pile and a Case Study
by L. Phan Ta, T. Matsumoto and H. Nguyen Hoang

Performance of Piled Raft Foundation Subjected to Strong Seismic Motion
by K. Yamashita, T. Hashiba, H. Ito and T. Tanikaw

Static Cyclic Load Tests on Model Foundations in Dry Sand
by Y.S. Unsever, T. Matsumoto, S. Shimono and M.Y. Özkan

Axial Bearing Behaviour of a Model Pile in Sand Under Multiple Static Cycles
by J. H. Hwang, Z. X. Fu, P. Y. Yeh, D. W. Chang

Seismic PBD of Piles from Monte Carlo Simulation Using EQWEAP Analysis with Weighted Intensities
by D.W. Chang, Y.H. Lin, H.C. Chao, S.C. Chu and C.H. Liu

Case Studies on Response of Laterally Loaded Nonlinear Piles
by Wei Dong Guo

Numerical Analysis of the Effect of Pile Tip Shape on Soil Behaviour Around Pile
by Y. Wu and H. Yamamoto

Shaking Table Test on Superstructure-foundation-Ground System in Liquefiable Soil and Its Numerical Verification
by F. Zhang, R. Oka, Y. Morikawa, Y. Mitsui, T. Osada, M. Kato and Y. Wabi

Model Loading Tests on Bearing Behaviour of a Group Pile and Ground Deformation in Sand
by S. Aoyama, B. Liu, L. Danardi, W. Mao, S. Goto and I. Towhata

Numerical Study on the Bearing Behaviour of Pile Groups Subjected to Lateral Pressure due to Soil Movements
by O. Reul, J. Bauer and C. Niemann

Deep Foundation Systems for High-rise Buildings in Difficult Soil Conditions
by R. Katzenbach and S. Leppla

Vol. 45 No.1 March 2014 ISSN 0046-5828

Editors: Prof. Buddhima Indraratna &
A/Prof. Cholachat Rujikiatkamjorn

Sponsored by: Asian Institute of Technology

Contents and Abstracts

Part I General papers

Geosynthetic-Reinforced Soil Structures for Railways: Twenty Five Year Experiences in Japan 1-16
by F. Tatsuoka, M. Tateyama, J. Koseki and T. Yonezawa

Enhancement of Rail Track Performance through Utilisation of Geosynthetic Inclusion 17-27
by Buddhima Indraratna, Sanjay Nimbalkar, and Cholachat Rujikiatkamjorn

Railway Track Transition Dynamics and Reinforcement Using Polyurethane GeoComposites 28-38
by P. Woodward, O. Laghrouche and A. El-Kacimi

How to Overcome Geotechnical Challenges in Implementing High Speed Rail Systems in Australia 39-47
by H. Khabbaz and B. Fatahi

Maintenance Model for Railway Substructure 48-57
by Ali Ebrahimi, James M. Tinjum, and Tuncer B. Edil

Dynamic Behaviour of Railway Ballasted Track Structures in Shaking Table Tests and Seismic Resistant Performance Evaluation in Japan 56-66
by T. Ishikawa, S. Miura and E. Sekine

Mechanical Properties of Polyurethane-Stabilized Ballast 67-73
by A. Keene, J.M. Tinjum, and T.B. Edil

Dependency of Cyclic Plastic Deformation Characteristics of Unsaturated Recycled Base Course Material on Principal Stress Axis Rotation 74-84
by A. Inam, T. Ishikawa, and S. Miura

Quickness Test Approach for Assessment of Flow Slide Potentials 85-94
by V. Thakur and S. A. Degago

Cement Stabilization for Pavement Material in Thailand 95-102
by S. Horpibulsuk, A. Chinkulkijniwat, A. Suddeepong, and A. Neramitkornburee

Stone Columns Field Test: Monitoring Data and Numerical Analyses 103-112
by Marcio Almeida, Bruno Lima, Mario Riccio, Holger Jud, Maria Cascão, Felipe Roza

Technical Note:
Numerical Analysis of Response of Geocell Confined Flexible Pavement 113-117
by G. L Sivakumar Babu and Ram Babu

Vol. 43 No.4 December 2012 ISSN 0046-5828

Guest Editors: Tom Lunne & Don de Groot

Sponsored by: Asian Institute of Technology

Content and Abstracts

Evaluation of existing CPT correlations in silt
by A. S. Bradshaw, A. C. Morales-Velez and C.D.P. Baxter

Characterisation of quick clay at Dragvoll, Trondheim, Norway
by A. Emdal, M. Long, A. Bihs, A. Gylland and N. Boylan

Field response of push-in earth pressure cells for instrumentation and site characterization of soils
by Alan J. Lutenegger

Frequent-interval SDMT and continuous SCPTu for detailed shear wave velocity profiling in soils
by T. Ku and P.W. Mayne

In situ testing of peat – a review and update on recent developments
by M. Long and N. Boylan

Understanding the stiffness of soils in Singapore from pressuremeter testing
by K.H. Goh, K. Jeyatharan and D. Wen

In situ measurement of hydraulic conductivity of saturated soils
by D.J. DeGroot, D.W. Ostendorf and A.I. Judge

Rate effect on cone penetration test in sand
by F. A. B. Danziger and T. Lunne

Vol. 43 No.3 September 2012 ISSN 0046-5828

Guest Editor: Prof. Abdelmalek Bouazza

Sponsored by: Asian Institute of Technology

Content and Abstracts

Waste/Lining System Interaction: Implications for Landfill Design and Performance 1-10
by N. Dixon, K. Zamara1, D.R.V. Jones and G. Fowmes

Wrinkling of a Geomembrane on a Compacted Clay Liner on a Slope 11-18
R. K. Rowe, P. Yang, M.J. Chappel, R.W.I. Brachman , W.A. Take

Diffusion of phenolic compounds through an HDPE geomembrane 19-29
by N. Touze-Foltz, M. Ahari, M. Mendes, C. Barral, M. Gardoni and L. Mazeas

Shear-Induced Geomembrane Damage due to Gravel in Underlying Compacted Clay 30-34
by P. J. Fox, C. Athanassopoulos, S. S. Thielmann, and A. N. Stern

Evaluation of mineral barriers against acid rock drainage 35-42
by A. Naka, T. Katsumi, G. Flores, T. Inui, T. Ohta, T. Urakoshi, and T. Ishihara

Improvement on the Performance of Geosynthetic Clay Liners Using Polymer Modified Bentonite 43-45
by Y. Liu, W. P. Gates and A. Bouazza

Effect of Settlement rate and Geogrid reinforcement on the Deformation Behaviour of Soil barriers of Landfill Covers: Centrifuge Study 46-54
by S. Rajesh and B.V.S. Viswanadham

Effect of differential settlements on the sealing efficiency of GCLs compared to CCLs: Centrifuge Study 55-61
by B.V.S. Viswanadham, S. Rajesh and A. Bouazza

Geosynthetic Lining System for Modern Waste Facilities – Experiences in Developing Asia 62-67
by H. B. Ng and B. Ramsey

The Use of Geosynthetics in Major Metropolitan Landfills in Perth, WA – Two Case Studies 68-70
by L. Du Preez, R. Beaman and I. Watkins

Vol. 43 No.2 June 2012 ISSN 0046-5828

Guest Editors: Prof. Ikuo Towhata, Prof. Der Wen Chang & Dr. Ivan Gratchev

Sponsored by: Asian Institute of Technology

Content and Abstracts

Papers:

Proposed Changes to the Geotechnical Earthquake Engineering Provisions of the Bangladesh National Building Code
by Tahmeed M. Al-Hussaini, Tahsin R. Hossain and M. Hayeem Al-Noman

Analysis of Soil Liquefaction during the Recent Canterbury (New Zealand) Earthquakes
by RP Orense, MJ Pender and LM Wotherspoon

Numerical Simulation of Seismic Slope Stability Analysis based on Tension-Shear Failure Mechanism
by Yingbin Zhang, Guangqi Chen, Jian Wu, Lu Zheng, Xiaoying Zhuang

A Real-time Prediction Method for Regional Rainfall-induced Geohazards in Post-earthquake Region of Wenchuan Earthquake
by Z. Yang, J. Qiao, H. Tian, D. Huang, M. Wang and H. Meng

Effects of Anisotropic Consolidation and Stress Reversal on the Liquefaction Resistance of Sands and Silty Sands
by Abbas Galandarzadeh and Alireza Ahmadi

Characteristics of Slope Failures During Natural Disasters Considering Geographical Features and Groundwater Level: Case Study of the Chuetsu Region of Niigata, Japan
by H. Toyota

Overview of the Geotechnical Damages and the Technical Problems Posed after the 2011 off the Pacific Coast of Tohoku Earthquake
by M. Kazama, T. Noda, T. Mori and J. Kim

Development of Potential Map for Landslides Induced by the Chi-Chi Earthquake Using Instability Index
by Meei-Ling Lin and Yu-Hung Shu

Technical Notes:

Geotechnical Hazards with Emphasis on Seismically-Combined Effects on Slopes
by Ikuo Towhata

Monitoring on Earthquake Induced Landslide – A Case Study in Northwest Chengdu, China
by Hongling Tian, Jianping Qiao., Taro Uchimura and Lin Wang

Vol. 43 No.1 March 2012 ISSN 0046-5828

Guest Editors: Charles W. W. Ng & Apiniti Jotisankasa

Sponsored by: Asian Institute of Technology

Content and Abstracts

Papers

Some Applications Of Unsaturated Soil Mechanics In Thailand: An Appropriate Technology Approach
by W. Mairaing, A. Jotisankasa and S. Soralump

Calculation Of Heave Of Deep Pier Foundations
by J.D. Nelson, K.C. Chao, D.D. Overton and R.W. Schaut

In-Situ And Laboratory Investigations Of Stress-Dependent Permeability Function And SDSWCC From An Unsaturated Soil Slope
by C. W. W. Ng and A. K. Leung

Measurements Of Shrinkage Induced Pressure (Sip) In Unsaturated Expansive Clays
by A.J. Puppala, T. Wejrungsikul, V. Puljan and T. Manosuthikij

Unsaturated Soil Mechanics For Slope Stabilization
by H. Rahardjo, A. Satyanaga, E. C. Leong

The Development Of Unsaturated Soil Mechanics At Imperial College, London
by J.R. Standing

Climate Change And The Role Of Unsaturated Soil Mechanics
by D.G. Toll, J. Mendes, P.N. Hughes, S. Glendinning and D. Gallipoli

Some Mining Applications Of Unsaturated Soil Mechanics
by D.J. Williams