"Extreme Foundations" For Peat Deposits: Conceptual Model, Creative Thinking And Learning Process,
2013
Universiti Tun Hussein Onn Malaysia, Malaysia
"Extreme Foundations" For Peat Deposits: Conceptual Model, Creative Thinking And Learning Process, Chee-Ming Chan
International Conference on Case Histories in Geotechnical Engineering
As engineering is essentially an application of science and mathematics to resolve real-life, practical problems, incorporation of actual field encounters or case histories in the teaching process can facilitate better understanding among students by providing a link between the theories and the applied solutions. It is the same for geo-engineering courses, like Advanced Foundation Engineering. By introducing the study of a relevant existing case in the course, the gap between theories and field applications can be effectively bridged. It is therefore no wonder that recent years have seen increased emphasis on problem-based learning in the delivery of engineering courses. In …
Analysis Of Piled-Raft Foundation For Cai Mep Container Port, Vietnam,
2013
Thu Dau Mot University, Binh Duong, Vietnam
Analysis Of Piled-Raft Foundation For Cai Mep Container Port, Vietnam, Nguyen Minh Hai, Bengt H. Fellenius
International Conference on Case Histories in Geotechnical Engineering
During the last decade, a series of ports are being built along the Thi Vai River in the Mekong delta approximately 80 km southeast of Ho Chi Minh City, Vietnam. The ports are built on reclaimed ground over an about 30 to 40 m thick deposit of soft, normally consolidated, compressible clay deposited on dense to compact sand The deep foundation system typically used for buildings in this region consists of pretensioned spun high strength concrete piles driven to significant toe bearing in dense soils. Because of the anticipated significant costs of this solution, a more economical alternative foundation system …
Full-Scale Load Testing Of 57-Year Old Raymond Piles For Foundation Re-Use,
2013
GAEA Engineering Ltd., Canada
Full-Scale Load Testing Of 57-Year Old Raymond Piles For Foundation Re-Use, Vishnu Diyaljee
International Conference on Case Histories in Geotechnical Engineering
The proposed reconstruction of a demolished coke battery superstructure of a steel mill to a level higher than originally constructed in 1952 required the evaluation of the geotechnical resistance and settlement characteristics of its existing foundation piles. Except for design drawings showing the layout of the substructure elements and the borehole logs, there were neither as-built drawings nor any records available about the design and construction of the piles. A total of nine (9) axial compressive load tests were initially undertaken. Two (2) 19 ft long piles were initially tested under the pusher tracks, and a further seven (7) piles …
Historical Application Of Screw-Piles And Screw-Cylinder Foundations For 19th Century Ocean Piers,
2013
University of Massachusetts, Amherst, MA
Historical Application Of Screw-Piles And Screw-Cylinder Foundations For 19th Century Ocean Piers, Alan J. Lutenegger
International Conference on Case Histories in Geotechnical Engineering
Iron Screw-Pile foundations were first introduced by Alexander Mitchell in the middle of the 19th Century for support of offshore lighthouses in shallow water ocean environments. Large diameter Screw-Piles with helical blades ranging from 2.5 ft. to 4 ft. in diameter were routinely used during this period and were constructed with either a solid iron central shaft (Screw-Pile) or a large diameter hollow cylindrical pipe shaft (Screw-Cylinder). Soon after their introduction, Screw-Piles and Screw-Cylinders were being used in pier construction, to allow ocean front piers to be constructed quickly and economically in many parts of the world, while at the …
Response Of Piled Raft Foundation On Soft Clay Under Seismic Load,
2013
Iran University of Science and Technology, Iran
Response Of Piled Raft Foundation On Soft Clay Under Seismic Load, Alireza Saeedi Azizkandi, Tara Maali, Mohammad Hassan Baziar
International Conference on Case Histories in Geotechnical Engineering
A number of researchers has extensively investigated the vertical load bearing mechanism of piled raft foundation, by applying elasticity theory and finite element method. The study on the load bearing mechanism under horizontal loading or during earthquakes, however, is very limited. This is partially because piled raft foundations are considered as raft foundations in the current design practice. Since the behavior of a piled raft foundation during earthquakes is considered fairly complex due to dynamic interaction among a raft, piles and a soil, the design procedure should include the effect of this mechanism in an appropriate manner. In other hands, …
A Case History Of Deep Excavation In Doha,
2013
Hyder Consulting Limited, Hong Kong, China
A Case History Of Deep Excavation In Doha, L. Tony Chen
International Conference on Case Histories in Geotechnical Engineering
The Doha high-rise tower consists of a 4 level basement which required an excavation depth of 16m along the site perimeter. Minimization of impact of excavation-induced ground movements on the adjacent structures and underground utilities was one of the major considerations in the design and construction of the excavation and its temporary retaining system. The temporary retaining system initially consisted of anchored secant pile walls with toe grouting along the entire site perimeter. After excessive movement was detected on one section of the southern wall, inclined steel bracing was installed inside the excavation as a remedial measure to provide additional …
Calculation Of Natural Frequency Of Earth Dams By Means Of Analytical Solution,
2013
Kharazmi University, Iran
Calculation Of Natural Frequency Of Earth Dams By Means Of Analytical Solution, Maryam Mahdizadeh, Ali Ghanbari
International Conference on Case Histories in Geotechnical Engineering
Earth dams are 3-Dimensional, huge and inhomogeneous structures that interact with water and soil. They are the most common type of dams used in the world and developing countries like Iran. Seismic analysis of earth dam is very important in regions which have been subjected with earthquake impaction several times. Calculating the natural frequency of dams is the essential part for its seismic behavior analysis. So it is very important to present an appropriate solution for calculation of natural frequency. Natural frequency of earth dams is usually calculated by means of experimental correlations, shear beam analysis (base on the height …
Case Histories Of Failure Of Deep Excavation. Examination Of Where Things Went Wrong: Nicoll Highway Collapse, Singapore,
2013
AECOM, Hong Kong, China
Case Histories Of Failure Of Deep Excavation. Examination Of Where Things Went Wrong: Nicoll Highway Collapse, Singapore, John Endicott
International Conference on Case Histories in Geotechnical Engineering
During the construction of Contract C824 of the Circle Line in Singapore, on 20th April 2004 an 80 m long section of excavation, 30 m deep, totally collapsed. The resulting crater was as deep as 15 metres and was more than 100 m in diameter. Six lanes of the adjacent Nicoll Highway subsided by as much as 13 m. Four construction workers were killed. Fortunately no vehicle was involved. A Committee of Inquiry was established and held hearings from August 2004 until March 2005. The findings of the Committee were published in May 2005. These identified the causes of the …
Design Details To Accommodate Fault Movement In A Dam Foundation,
2013
MWH, Chicago, IL
Design Details To Accommodate Fault Movement In A Dam Foundation, Peter A. Dickson, Joseph R. Kovacich, Georgios Raptis
International Conference on Case Histories in Geotechnical Engineering
During planning for dam projects, good practice usually calls for appropriate investigations to help assure the development is not located on or immediately adjacent to active faults. There are examples of projects, however, where an active fault has been discovered in or close to a dam foundation and engineering solutions have been incorporated into design to enable satisfactory performance of the dam should fault displacement occur during project operation. In some cases, the existence of such hazards only becomes evident late in the design cycle when the dam site is considered fixed and hazard avoidance is not an easy option. …
Investigating The Performance Of Ground Anchor Through The Failure Slope Disaster In Taiwan,
2013
Huafan University, Taiwan
Investigating The Performance Of Ground Anchor Through The Failure Slope Disaster In Taiwan, Ching-Jiang Jeng, Yen-Cheng Chen
International Conference on Case Histories in Geotechnical Engineering
At milestone 3.1 km of the Formosa Freeway in northern Taiwan, a landslide occurred on April 25, 2000, causing nearly 200,000 m3 of earth and rock to slump down onto the freeway below. Four people trapped in cars beneath the collapsed slope died. How such a tremendous slope failure could happen in dry weather without advanced warning is attributed to two key factors: (1) Long-term groundwater infiltration resulting in the softening of thin interlayer between sandstone and shale; (2) Ground anchor corrosion resulting in a decrease in slope stability. Together these two factors caused the slope to reach a …
Lessons Learned From The Disaster At Lippe Canal Bridge,
2013
German Federal Waterways Engineering and Research Institute, Germany
Lessons Learned From The Disaster At Lippe Canal Bridge, Markus Herten, Eva Dornecker
International Conference on Case Histories in Geotechnical Engineering
In October 2005, during construction works at the new Lippe canal bridge, massive water leakage from the Dortmund-Ems-Canal occurred below a wing wall at the northern abutment of the old, still operated canal bridge. Water passed through a leak of the claylined canal, flowing underneath a pile-supported wing wall into a minor excavation pit. This excavation pit was supposed to be protected by a surcharge filter. Since failure of the lining should be considered for all construction phases, it cannot be regarded as the cause of the disaster. Consequently, the paper focuses on the verification against hydraulic heave and erosion …
Levee Foundation Remediation Using The Deep Mix Method,
2013
TREVIICOS Corp., Charlestown, MA
Levee Foundation Remediation Using The Deep Mix Method, Wesley Schmutzler, Filippo Maria Leoni, Kyle Sansing
International Conference on Case Histories in Geotechnical Engineering
Hurricane Katrina was responsible for hundreds of deaths, billions of dollars of damage, and left the levee system in New Orleans in a state of disrepair. Many levees that make up the Flood Protection system for New Orleans were overtopped and sustained considerable damage. This case history will look at one section of levee in New Orleans East designated LPV (Lake Pontchartrain and Vicinity) -111 that is 5.3 miles in length. LPV-111 was overtopped and breeches occurred adjacent to structures. The United States Army Corps of Engineers (USACE) was tasked to not only repair the levee, but also to raise …
Susceptibility Analysis On Landslide Triggering Factors During The 2008 Wenchuan Earthquake,
2013
Waseda University, Japan
Susceptibility Analysis On Landslide Triggering Factors During The 2008 Wenchuan Earthquake, Deping Guo, Masanori Hamada
International Conference on Case Histories in Geotechnical Engineering
The 2008 Wenchuan earthquake with Mw7.9 induced numerous landslides along the Longmen Mt. zone in Sichuan Province of China. The authors investigated into various influential factors on the slope stability of 119 landslides in Wenchuan County, such as horizontal peak ground acceleration, slope angle, slope height, rock materials and geological structures. The authors developed hanging wall and footwall‟s acceleration attenuation formulae from 115 seismic stations and the formulae confirmed hanging-foot wall effect had notable influence on landslide distribution density and occurrence probability. The results of multivariable analysis clarified that slope height, horizontal peak ground acceleration and geological structures …
The Simplified Kzp6 Method For Tieback Wall Design In Granular And Cohesive Soils,
2013
California State University/ ACI/ Caltrop, Inc., Long Beach, CA
The Simplified Kzp6 Method For Tieback Wall Design In Granular And Cohesive Soils, Kumars Zand-Parsa, Kamran Zand-Parsa
International Conference on Case Histories in Geotechnical Engineering
Tieback retaining walls are using as temporary shoring systems for bridge footings or other structures that need deep excavations. Design and design review process are time consuming, and the possibility of making mistakes encourages us to find a simplified method for designing the tieback walls. Tieback walls with maximum 20m height and with 1 to 4 rows of anchors is considered in this paper. Whole length of the drilled holes will be filled with grout after setting the rods or stressing cables. Sometimes for temporary shoring the rod will be anchored to a concrete block supported by dirt, so there …
Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study,
2013
CSIR-North East Institute of Science & Technology Jorhat, India
Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study, Gokul K. Bayan
International Conference on Case Histories in Geotechnical Engineering
Karshingsa is a hilly terrain situated in lower Himalayan region under Arunachal Pradesh in India. It expresses occurrence of severe landslides of debris flow nature almost every year as and when consecutive 3-month rainfall precipitation during peak monsoon period exceeds about 2,300 mm, all along the lower Himalayan region of Eurasian plateau most particularly in Karshingsa area. Study carried out in the lower belt of Arunachal Himalaya for about more than one decade proclaims that 45%-55% landslides are flow type origin, the debris of which are flowing like liquid. Mechanism of such flow failure is static liquefaction developed in a …
Case Study On The Rehabilitation Of A Distressed Retaining Wall,
2013
Indian Institute of Science, India
Case Study On The Rehabilitation Of A Distressed Retaining Wall, G. L. Sivakumar Babu, Pawan Kumar, Raja Jaladurgam
International Conference on Case Histories in Geotechnical Engineering
Earth retaining structures usually need careful monitoring after construction in order to detect any signs of distress. In cases where failure is likely to occur, appropriate remedial techniques need to adopted, backed by a detailed analysis. This paper presents a case study on the rehabilitation of a retaining wall that was constructed for a bypass road project. The structure showed clear signs of distress immediately after completion and hence could not be opened for traffic. Preliminary finite element analysis of the wall showed values of factor of safety that are lesser than permissible values. The values of factor of safety …
Observations Save The Day At The Wachovia Cultural Center Excavation,
2013
Geotechnical Consultant, Aiken, SC
Observations Save The Day At The Wachovia Cultural Center Excavation, D. Bruce Nothdurft, E. J. Cording, J. Sid Davis
International Conference on Case Histories in Geotechnical Engineering
In the observational method, gaps in the available information are filled by observations. Such observations were invaluable during the construction of a 54-story building with an 8-story underground parking deck in Charlotte, North Carolina, which required an excavation nearly 100-feet deep into rock. Cracks appeared in an adjacent brick office building by the time the north side of the excavation had reached a depth of about 40 feet. Blast-induced settlement was initially suspected. As excavation continued, some soilfilled weathered joints, seams, and fractures in the rock sidewalls were observed, and displacement of the cracks increased. Inclinometer casings were installed along …
Geotechnical Aspect For Protection Bunds,
2013
Mott MacDonald Private Limited, India
Geotechnical Aspect For Protection Bunds, Janvi Talsaniya, Vaishali Pandya, Jigar Rana
International Conference on Case Histories in Geotechnical Engineering
The design team of Water & Environment division of Mott MacDonald, Ahmadabad was involved in design of Rubble mound protection bund for a Sea water intake and outfall project. The project was to provide make up sea water for 2x250 MW Lignite based Thermal Power Pant (TPP) at Bhavnagar for Bhavnagar Energy Company Limited. The makeup water required for TPP was drawn through Sea water Intake (SWI) area constructed in the intertidal zone of Gulf of Khambhat. The SWI area consists of a Pumping Station for pumping sea water from storage pond. The storage pond was surrounded by all around …
Three Dimensional Soil-Structure-Interaction Analysis Of A Flood Wall Under Full-Scale Load Test,
2013
AMEC, Oakland, CA
Three Dimensional Soil-Structure-Interaction Analysis Of A Flood Wall Under Full-Scale Load Test, Jian Hu, Faiz Makdisi, Zhi-Liang Wang, Kent Hokens, Neil Schwanz
International Conference on Case Histories in Geotechnical Engineering
The U.S. Army Corps of Engineers (Louisville District) conducted a number of full-scale tests to determine the behavior of continuous steel sheet pile flood walls when subjected to hydrostatic loads simulating actual flood conditions. Among these tests, Test Series III (sheet piling with concrete jacket) was conducted at the Tell City site in Indiana. The results of these full-scale load tests provide valuable data that could help verify geotechnical design procedures. In addition, numerical analyses simulating these tests could be useful in interpreting the foundation and structure behavior and in predicting the performance of similar I-wall-type levee systems subjected to …
Liquefaction Potential Evaluation: Energy-Based Method Compared To Stress-Based Method,
2013
Chuo University, Japan
Liquefaction Potential Evaluation: Energy-Based Method Compared To Stress-Based Method, Takaji Kokusho
International Conference on Case Histories in Geotechnical Engineering
A data set of undrained cyclic triaxial test with parametrically changing relative density and fines content is reviewed and interpreted in the scope of energy. It is found that the strain amplitude or pore-pressure buildup during cyclic loading is uniquely related to the energy dissipated in soil specimens. This further indicates that a RL (cyclic stress ratio)-Nc (number of cycles) line corresponding to specific soil strain represents a line of equal dissipated energy. An energy-based method (EBM) is proposed in which liquefaction potential can be evaluated by comparing the dissipated energy with upward seismic wave energy with no …
