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Full-Text Articles in Entire DC Network
Tall Buildings And Their Foundations: Three Examples, William F. Baker, Christopher Brown, James J. Pawlikowski, Dane S. Rankin
Tall Buildings And Their Foundations: Three Examples, William F. Baker, Christopher Brown, James J. Pawlikowski, Dane S. Rankin
International Conference on Case Histories in Geotechnical Engineering
The influence of foundations on the design and behavior of tall buildings is explored by examining two built towers: Burj Khalifa, Trump International Hotel and Tower, and the partially built Plaza Rakyat, a 77 story tower in Malaysia. The paper reviews how foundation conditions were considered in the design of the buildings, and how the foundations were anticipated to influence the behavior of the towers.
Case Histories Of Liquefaction In Loose Sand Fills During The 1989 Loma Prieta Earthquake: Comparison With Large Scale And Centrifuge Shaking Tests, Ricardo Dobry, Tarek Abdoun, Sabanayagam Thevanayagam, Hesham El-Ganainy, Vicente Mercado
Case Histories Of Liquefaction In Loose Sand Fills During The 1989 Loma Prieta Earthquake: Comparison With Large Scale And Centrifuge Shaking Tests, Ricardo Dobry, Tarek Abdoun, Sabanayagam Thevanayagam, Hesham El-Ganainy, Vicente Mercado
International Conference on Case Histories in Geotechnical Engineering
The paper focuses on loose clean and silty sand fills that liquefied during the 1989 Loma Prieta, California earthquake. Available field case histories of liquefaction that include measured shear wave velocity from the Andrus et al. (2003) database are used. The liquefaction behavior observed in these field case histories is compared with the results of two large scale and six centrifuge shaking tests conducted by the authors. System identification and site response analyses are used to obtain the corresponding cyclic shear stress ratios in the tests. Due consideration is given to the shaking duration and 1D versus 2D shaking in …
Barrette Foundations — Two Case Histories From Turkey, H. Turan Durgunoglu
Barrette Foundations — Two Case Histories From Turkey, H. Turan Durgunoglu
International Conference on Case Histories in Geotechnical Engineering
In the recent decades construction of tower structures in big cities around the world is a new trend that has been followed. As a result, engineers are faced with foundations to be designed and constructed under heavier super structural loads imposed by such structures. Often, poor subsoil conditions, site heterogeneity, variability in geometry, and high seismicity brings further challenge in cost effective and safe foundation design. To overcome such complexities and meet higher load capacity requirements often barrette foundations have been utilized instead of cast in situ circular large diameter piles. In this paper applications of barrette foundations together with …
Sustainability And Waste Management: Case Histories, Hari D. Sharma
Sustainability And Waste Management: Case Histories, Hari D. Sharma
International Conference on Case Histories in Geotechnical Engineering
Sustainability is the condition of maintaining a process or a state at a certain level for perpetuity. In waste management and geoenvironmental engineering terms: sustainability is making marginal and waste lands and waste products into usable properties, products and services. To address sustainability issue, this paper first presents waste minimization policies prior to disposal; a few examples of this are: recycling, composting and incineration. After efficiently using the waste minimization policies, the remaining produced waste needs to be disposed of which has two aspects (i) the presently active waste disposal sites and (ii) the already disposed waste and closed waste …
Ralph B. Peck, 1912 – 2008, Gholamreza Mesri
Ralph B. Peck, 1912 – 2008, Gholamreza Mesri
International Conference on Case Histories in Geotechnical Engineering
Ralph B. Peck, one of the most influential engineers of the twentieth century with superb judgment and wisdom, was not only a gentleman but also a gentle man. It was, therefore, a real pleasure to work with him and it is a great pleasure remembering Ralph B. Peck.
Tunneling In Chicago Clay: Pioneering Work In Ground Control, Edward J. Cording
Tunneling In Chicago Clay: Pioneering Work In Ground Control, Edward J. Cording
International Conference on Case Histories in Geotechnical Engineering
Early in his engineering career, Ralph Peck supervised the soil mechanics investigations during subway construction in the soft clays in Chicago, working under the guidance of Karl Terzaghi. A major focus was to determine what should be done to minimize surface settlements of the streets. Squeeze tests, in which clay displacements and construction events in the tunnel were observed, led to changes that significantly reduced surface settlement. Squeeze test reports prepared by Peck and his soil mechanics team are summarized and selected drawings illustrated. The work provides a first view of Peck’s observational method: “it demonstrated the enormous practical benefits …
Ralph Peck’S Circuitous Path To Professor Of Foundation Engineering (1930-48), J. David Rogers
Ralph Peck’S Circuitous Path To Professor Of Foundation Engineering (1930-48), J. David Rogers
International Conference on Case Histories in Geotechnical Engineering
When most geoengineers hear the name of Ralph B. Peck (1912-2008) they usually associate him with the father of soil mechanics, the legendary Karl Terzaghi (1883-1963), because of their long professional association, between 1939-63. But, Peck’s professional career in geotechnics was also influenced by other engineers and geologists, whose ingenuity he admired and tried to emulate. Some of these are names easily recognized, even 100 years later, while others are all but forgotten. This article seeks to introduce the reader to some of those luminaries that played a role in shaping Ralph Peck’s career as one of the founders of …
Performance Of Two Geosynthetics-Lined Landfills In The Northridge Earthquake, Edward Kavazanjian Jr., Mohamed Arab, Neven Matasovic
Performance Of Two Geosynthetics-Lined Landfills In The Northridge Earthquake, Edward Kavazanjian Jr., Mohamed Arab, Neven Matasovic
International Conference on Case Histories in Geotechnical Engineering
Analyses of the performance of the Chiquita Canyon and Lopez Canyon landfills in the 1994 Magnitude 6.7 Northridge earthquake illustrate deficiencies in the current state-of-practice for seismic design of geosynthetic liner systems and the promise of a new state-of-the-art method for performance-based design, and suggest necessary modifications to construction quality assurance procedures for geosynthetic liner systems. Analyses of the Chiquita Canyon landfill case history using the conventional state-of-practice Newmark Analysis approach fail to predict the tears observed at the landfill following the earthquake in the side slope liner geomembrane at two different locations. However, the state-of-the-art finite difference based method …
Probabilistic Geotechnical Analyses For Offshore Facilities, Suzanne Lacasse, Farrokh Nadim
Probabilistic Geotechnical Analyses For Offshore Facilities, Suzanne Lacasse, Farrokh Nadim
International Conference on Case Histories in Geotechnical Engineering
Society requires increasingly that the hazard and risk associated with engineered constructions be quantified. The paper presents ge-otechnical hazard assessment in the context of a risk framework. Concepts of uncertainties, reliability, safety and risk are briefly re-viewed. The use of the approach is exemplified for offshore facilities, including a piled foundation, a gravity foundation, a jack-up structure and underwater slopes. The applications demonstrate that probabilistic analyses complement the conventional deterministic safety factor and deformation-based analyses, and contribute to achieving a safer and optimum design. The conclusions emphasize the usefulness of a risk assessment, the importance of engineering judgment in the …
The Case Of The New Tagus River Leziria Bridge, Pedro Sêco E Pinto, Ricardo Oliveira, Alexandre Portugal
The Case Of The New Tagus River Leziria Bridge, Pedro Sêco E Pinto, Ricardo Oliveira, Alexandre Portugal
International Conference on Case Histories in Geotechnical Engineering
A brief description of the New Tagus River Leziria Bridge composed by 1695 m North Viaduct, by 970 m Main Bridge and by South Viaduct with a length of 9200 m is presented. The observed thickness of the foundation alluvia material varies between 35m and 55m with a maximum value of 62m. Hundred eighteen boreholes were performed with a depth between 21m and 71m and eight boreholes were performed from a maritime platform. Standard penetration tests (SPT) were carried out in all boreholes 1.5 m apart. In addition CPTu tests, seismic cone tests, crosshole and downhole tests were performed. In …
Tall Building Foundation Design – The 151 Story Incheon Tower, Harry G. Poulos
Tall Building Foundation Design – The 151 Story Incheon Tower, Harry G. Poulos
International Conference on Case Histories in Geotechnical Engineering
The 151 storey super high-rise building is located in an area of reclaimed land constructed over soft marine clay in Songdo, Korea and is currently under design. This paper describes the design process in developing the foundation system of the supertall tower.The foundation design process described includes the initial stages of geotechnical site characterization using the results of investigation boreholes and geotechnical parameter selection, and a series of detailed two- and three-dimensional numerical analysis for the Tower foundation comprising 172 bored piles of varying length using finite element and boundary element methods. This paper will also provide a summary of …
Foundation Failure Case Histories Reexamined Using Modern Geomechanics, Rodrigo Salgado, Andrei Lyamin, Jeehee Lim
Foundation Failure Case Histories Reexamined Using Modern Geomechanics, Rodrigo Salgado, Andrei Lyamin, Jeehee Lim
International Conference on Case Histories in Geotechnical Engineering
Case histories have played an important role in guiding development of geotechnical engineering during a time when theory was not sophisticated enough to model even simple problems with an acceptable level of rigor. As the discipline transitions from overwhelming reliance on empiricism to a greater reliance on science, it is useful to reexamine the best known case histories as a general check on modern methods of analysis. In the engineering of foundations in clay, three case histories the collapses of the Transcona and Fargo grain elevators and the near collapse of the leaning tower of Pisa stand out. …
Observational Method For The Design Of A New Ground Improvement Concept Adapted To A Large-Scale Fast-Track Project, Serge Varaksin, Frédéric Massé
Observational Method For The Design Of A New Ground Improvement Concept Adapted To A Large-Scale Fast-Track Project, Serge Varaksin, Frédéric Massé
International Conference on Case Histories in Geotechnical Engineering
In 2007, the King of Saudi Arabia launched a large scale development program for the construction of a complete university campus on an existing lagoon. The fast-track project was to be completed within a period of 24 months leaving no time for the usual preliminary investigation and design phase. The 5,600,000 m2 site was selected north of Jeddah and a proper soil inves-tigation could not be completed ahead of the start of construction due to difficult site access and challenging existing soft soil condition. In addition to that, because the structural design or even the master plan had not been …
Improvement Of Dynamic Soil Properties Induced By Preloading Verified By A Field Test And Embankment Failure, K. Stamatopoulos, P. Petridis, P. S. Allkja, G. Vatselas, A. Small
Improvement Of Dynamic Soil Properties Induced By Preloading Verified By A Field Test And Embankment Failure, K. Stamatopoulos, P. Petridis, P. S. Allkja, G. Vatselas, A. Small
International Conference on Case Histories in Geotechnical Engineering
The results of an elaborate field preloading study on a liquefaction-susceptible site are presented. Preloading was applied by a temporary embankment 9m high. Prior and after preloading, borings with standard penetration tests, cone penetration tests and geophysical studies were performed. During the process of embankment construction and demolition, settlements, excess pore pressures and vertical and horizontal stresses were recorded versus time at different locations. A partial embankment failure occurred during the preloading process. A method predicting failure during the construction of the preload embankment based on excess pore pressure measurements is proposed and verified.
An Assessment Of Soil Collapsibility Due Dissolution Of Salts, Omar Alhattamleh
An Assessment Of Soil Collapsibility Due Dissolution Of Salts, Omar Alhattamleh
International Conference on Case Histories in Geotechnical Engineering
Since the building of first dike in the Dead Sea (DS) 60 years ago, the DS harsh environment sparks new geotechnical challenges. The DS level as well as the surrounding ground water table continued to drop severely. The DS level drops 35 m from 392 mbsl in late 1950s to around 423 mbsl in 2011. Recently, the rate of descending is 1.2 m/year and is on brink to increase. The dramatically dropping of the DS level pushes fresh water brackish water divide and generates numerous sink holes in the southern part of the east coast of the DS. The thing …
Application Of Nanomaterial To Stabilize A Weak Soil, Seyedi Gelsefidi Seyed Alireza, Mirkazemi Seyed Mohammad, Baziar Mohammad Hasan
Application Of Nanomaterial To Stabilize A Weak Soil, Seyedi Gelsefidi Seyed Alireza, Mirkazemi Seyed Mohammad, Baziar Mohammad Hasan
International Conference on Case Histories in Geotechnical Engineering
There are little investigations in the literature on the nanotechnology's application in the geothecnical field. Since, lots of soil and rock minerals are nanomaterial and their chemical reactions are in the nano-scale, there is a great potential for the use of this technology in different fields of geothecnical engineering such as seepage, grouting, soil stabilization and etc. In this study the stabilization of a weak soil was investigated using nanomaterial. The weak soil was obtained from Boodian Road in North of Iran and classified as low plasticity clay. Fifty CBR tests were conducted in this study. At the first step …
Arsenic Contamination Of Groundwater At The Middle Basin Of Ganges In India, Yasunori Yano, Kenichi Ito, Hiroshi Yokota, Koichiro Shiomori, Shigeki Tomomatsu, Mitsuhiro Sezaki
Arsenic Contamination Of Groundwater At The Middle Basin Of Ganges In India, Yasunori Yano, Kenichi Ito, Hiroshi Yokota, Koichiro Shiomori, Shigeki Tomomatsu, Mitsuhiro Sezaki
International Conference on Case Histories in Geotechnical Engineering
This paper shows the situation and mechanism of arsenic contamination of groundwater at the worst contaminated areas in UP (Uttar Pradesh) state, India, which is obtained from the integrated arsenic mitigation project by University of Miyazaki under the Japan International Cooperation Agency (JICA) Partnership Program (JPP). The project has been executed from 2008 until now. The integrated mitigation, such as the raising awareness of villager, installing of alternative water supply units and healthcare of arsenocosis patients, have been executed at the 2 villages. The symptom of the arsenocosis patients was not so severe, which will be, therefore, improved by drinking …
Case Studies On Application Of Coir Geotextiles For Soil Stabilization, K. S. Beena
Case Studies On Application Of Coir Geotextiles For Soil Stabilization, K. S. Beena
International Conference on Case Histories in Geotechnical Engineering
Coir geotextiles (Coir Bhoovastra) is one of the non-traditional highly demanded and promising coir product with multi usages as eco-friendly, sustainable and substitutable product for many Civil Engineering applications especially in Geotechnical Engineering. Coir Geo-textiles is an emerging area of coir industry. Kerala, the major coir producing state in India is fast growing in the development and application of Coir Geotextile. Coir Geotextile development program is also intended to popularize the coir products as geotextile material in National & International level and to provide internationally accepted standardization for coir geotextile. The use of Coir geotextile is well established in areas …
Closure And Post-Closure Redevelopment Of The Mccoll Superfund Site, Edward Kavazanjian Jr.
Closure And Post-Closure Redevelopment Of The Mccoll Superfund Site, Edward Kavazanjian Jr.
International Conference on Case Histories in Geotechnical Engineering
The McColl Superfund site was one of the highest-profile hazardous waste sites in the USA in the 1980’s. The 12 unlined pits containing refinery waste from World War II presented unique challenges for closure construction and post-closure redevelopment due the caustic nature, low bearing capacity, and high odor potential of the waste, the proximity of residences, and a mandate to restore portions of a golf course over several of the pits. Closure design included special testing to demonstrate the durability of materials that could potentially come in contact with the waste and to evaluate the potential for migration of waste …
Compaction Grouting For Seismic Retrofit Of The North Torrey Pines Bridge, James R. Gingery, Sunil Arora
Compaction Grouting For Seismic Retrofit Of The North Torrey Pines Bridge, James R. Gingery, Sunil Arora
International Conference on Case Histories in Geotechnical Engineering
The North Torrey Pines Road Bridge in Del Mar, California was built in 1933 and is eligible for listing in the National Register of Historic Places. As a result of its outdated design and deterioration in a corrosive saline environment, the bridge was classified as structurally and seismically deficient and functionally obsolete. The historic significance of this bridge is important to the surrounding community and thus a seismic retrofit project was initiated with the goal of improving the expected seismic performance of the bridge while preserving its aesthetic and historic character. This paper provides a brief description of the overall …
Reducing Static Settlement Potential Using Prefabricated Wick Drains – A Case History, Judd J. King
Reducing Static Settlement Potential Using Prefabricated Wick Drains – A Case History, Judd J. King
International Conference on Case Histories in Geotechnical Engineering
Soft fine-grained soils subjected to heavy loads, such as those imposed by rigid structures or fill, have a high potential to consolidate over time. Depending upon subsurface conditions, soil consolidation can take many years to occur. This consolidation results in settlement, and subsequent differential settlement of the ground surface, which can have damaging consequences to structures. To reduce the potential for damage to structures due to consolidation settlement, various solutions have been devised by geoprofessionals. Such solutions include pile foundations, rigid mat/raft foundations, chemical stabilization, and over-excavation/replacement. Another method is the use of prefabricated wick drains in combination with a …
Selection Activity Optimization For A Geotextile-Ash System From Filtration Function Point Of View, Raluca Ioana Chirică, Liviu Tit Taloş
Selection Activity Optimization For A Geotextile-Ash System From Filtration Function Point Of View, Raluca Ioana Chirică, Liviu Tit Taloş
International Conference on Case Histories in Geotechnical Engineering
The paper presents a complex study concerning the fly ash deposits. It is known that the fly ash is an industrial by-product which is stored in landfills, with important implications on the environment. On this line, the general stability problem under different hydraulic and mechanical conditions was studied. Experimental and numerical analysis results are presented. The paper is about a fly ash embankment protected against erosion with different geotextile types. In order to obtain the main parameters of this compatibility problem, before performing a numerical analysis, some laboratory tests were undertaken. Conclusions were drawn regarding the optimum geotextile-fly ash filtration …
Simulation Of Inorganic And Organic Contaminants Transport In Sanitary Landfills, R. P. Singh
Simulation Of Inorganic And Organic Contaminants Transport In Sanitary Landfills, R. P. Singh
International Conference on Case Histories in Geotechnical Engineering
The modelling of leachate generation and transport is important for estimating the possible groundwater pollution below the sanitary landfills. The numerical solution of the mathematical models for the total solids (inorganic) and chemical oxygen demand (organic) transport is presented. The existing one dimensional leachate transport model which accounts for advection and diffusion is modified with the addition of desorption term and the simulation results are compared for different case studies from the literature. The maximum error is reduced to 28.24 % with modified inorganic model against 38.93 % with the existing model for the TS concentration when simulated with literature …
Stabilization Of Contaminated Soil By Dicalcium Phosphate, Amin Falamaki, Hossein Tavallali, Sharbanoo Rezanejad Farahmand
Stabilization Of Contaminated Soil By Dicalcium Phosphate, Amin Falamaki, Hossein Tavallali, Sharbanoo Rezanejad Farahmand
International Conference on Case Histories in Geotechnical Engineering
Stabilization of heavy metals contaminated soils using phosphate amendments is relatively a simple, quick and cheap method to reduce the transport of contaminants in the environment. The objective of this study is to stabilize the polluted soil using dicalcum phosphate (DCP). In this study a series of leachate column tests were conducted to find out the effect of DCP on Pb and Cu polluted soil. In addition, to understand the concentration of DCP on the efficiency of the method, different samples with different polluted soils were tested. DCP with 0.1, 0.2 and 0.5 mg/kg dry soil were added to the …
Use Of Porous Concrete And Scoria Bases To Clean Groundwater Recharge, Kevin T. Harker, James Mahar
Use Of Porous Concrete And Scoria Bases To Clean Groundwater Recharge, Kevin T. Harker, James Mahar
International Conference on Case Histories in Geotechnical Engineering
The City of Pocatello, Idaho does not currently treat its storm water, but rather collects runoff in detention basins or discharges it into the Portneuf River. Nitrates from fertilizers and petroleum products enter local waterways and ultimately groundwater supplies. Porous concrete is regarded as a green product and has storm water filtering capabilities. Idaho State University (ISU) has been studying the use of scoria (vesicular basalt) to retain petroleum contaminants which migrate through porous concrete collection systems placed on driving surfaces. At present, ISU is conducting laboratory experiments using a physical model consisting of a porous concrete slab made with …
Wsasw Application For Soil Dynamic Properties In Soft Soil Investigation At Kelang, Malaysia, Sri Atmaja P. Rosyidi
Wsasw Application For Soil Dynamic Properties In Soft Soil Investigation At Kelang, Malaysia, Sri Atmaja P. Rosyidi
International Conference on Case Histories in Geotechnical Engineering
In seismic wave measurements, soil dynamic parameters, i.e., shear wave velocity and shear modulus are determined from a dispersion curve of phase velocity with employing the theory of elasticity of soils. In this paper, a developed technique from Spectral Analysis of Surface Waves (SASW), namely as the Wavelet Spectrogram Analysis of Surface Waves (WSASW) is introduced for measurement of the soil dynamic properties at soft marine clay soils sites. This technique has capability to localize the interested response spectrum of surface waves, to reconstructed spectrograms of noisy seismic waves and produces the enhanced phase data to develop the phase velocity …
Predicting Ground Subsidence Induced By Pumping Combining Space Measurements And Geotechnical Modeling: Application In The Thessaly Region, Greece, C. Stamatopoulos, P. Petridis, L. Balla, I. Parharidis, M. Foumelis, D. Fountoulis, Ch. Lalehos, Metaxas
Predicting Ground Subsidence Induced By Pumping Combining Space Measurements And Geotechnical Modeling: Application In The Thessaly Region, Greece, C. Stamatopoulos, P. Petridis, L. Balla, I. Parharidis, M. Foumelis, D. Fountoulis, Ch. Lalehos, Metaxas
International Conference on Case Histories in Geotechnical Engineering
Space technology is a new technology that provides cost-effective measurements of past displacement data. Based on these displacement measurements, within the framework of the European Space Agency’s GMES Terrafirma Project, an improved geotechnical design approach is proposed combining geotechnical modelling and space measurements to predict ground subsidence induced by the lowering of the water table. Then the proposed methodology is applied to predict future displacement at the Thessaly plain - Carla region, Greece due to excessive pumping.
Seismic Refraction Data And Dangerous Phenomena’S In By-Pass Vlora Road, Luljeta Bozo, Skender Allkja
Seismic Refraction Data And Dangerous Phenomena’S In By-Pass Vlora Road, Luljeta Bozo, Skender Allkja
International Conference on Case Histories in Geotechnical Engineering
The touristic zone of Vlora has a very beautiful nature where there is a marvelous combination of the sea, hills and mountains. This zone has different pollutions, one of them is acoustic and gazes pollution from means of transport. With intention to reduce this pollution and to secure a commodity, rapid and sure circulation of the means of transport to the touristic jonian seaside area was decided the construction of the Vlora By-pass road. The new road passes in hills and field terrain. In one part of the new road we have made a combination geological-geophysical and geotechnical study, with …
Effects Of Arching On Measurement Of Embedded Pressure Cell In Embankment Dam, Dorsa Elmi, Ali Asghar Mirghasemi
Effects Of Arching On Measurement Of Embedded Pressure Cell In Embankment Dam, Dorsa Elmi, Ali Asghar Mirghasemi
International Conference on Case Histories in Geotechnical Engineering
Field observation and monitoring earth structures is vital to design the structure safely and efficiently. Among different types of instruments, earth pressure cells (EPCs) are used to measure soil pressure in embankment dams, which are not proved to be entirely satisfactory. Presence of cells and installation methods usually affect the accuracy of total stress measurements. Since earth pressure cells are prone to damage by large and sharp stones or by using heavy compaction rollers, one excavates a trench and place EPC within fine grained soil which is compacted with light-weight machines. This nonconformity results in local arching between the installation …
Relook At Foundation Design Of Re Structures In Indian Environment Based On Case Study, Ravin M. Tailor, Jigisha M. Vashi, Mahesh D. Desai
Relook At Foundation Design Of Re Structures In Indian Environment Based On Case Study, Ravin M. Tailor, Jigisha M. Vashi, Mahesh D. Desai
International Conference on Case Histories in Geotechnical Engineering
India has massive infrastructure development plan in next decade. The safety, cost optimization saving construction time is challenges to engineers. The mass communication progress of 11th & 12th five year plans involves design and execution of large number of underpasses/flyovers through out country. The problems faced by adoption of foundation practice in India based on interpretation of BS 8006 / 1995 during execution are analyzed. Though not widely publicized, failures of walls or part of facial block wall are reported. To avoid contract schedules quick remedial measures are adopted, which based on consultants and facilities includes stone columns, lime piles, …