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Full-Text Articles in Geotechnical Engineering
Investigation Of The Influence Of The Clay Seams Around An Underground Excavation In Rock Salt, S. Kwon, John W. Wilson
Investigation Of The Influence Of The Clay Seams Around An Underground Excavation In Rock Salt, S. Kwon, John W. Wilson
International Conference on Case Histories in Geotechnical Engineering
The presence of clay seams in the roof is especially important for assessing the stability of the excavations in salt and potash mines, since they allow separation as well as horizontal slip. The deformational behavior at clay seams in the roof of excavations was investigated by using actual field measurements made at the Waste Isolation Pilot Plant (WlPP) site. From the in situ deformation measurements, the separation and separation rate across the clay seams in the roof and floor could be estimated by using the technique developed in this study. The horizontal displacement along the clay seams was determined from …
Tension Tests On Drilled Micropiles In A Stiff Clay, Alan J. Lutenegger, Gerald A. Miller
Tension Tests On Drilled Micropiles In A Stiff Clay, Alan J. Lutenegger, Gerald A. Miller
International Conference on Case Histories in Geotechnical Engineering
A series of 20 small diameter drilled and grouted micropiles were installed at three different depths in a stiff surficial clay crust at the National Geotechnical Experimentation Site in Amherst, Massachusetts. A detailed site characterization program was performed to evaluate· the soil characteristics in the crust. Three different sizes of micropiles ranging in diameter from 76 mm to 152 mm and having lengths from 1.52 m to 4.57 m were installed vertically at the site using both continuous flight augers and hand auger techniques. Concrete was placed in the open holes using gravity free-tall. After allowing the concrete to cure …
Case Histories Of Damaging Earthquakes, Walter W. Hays
Case Histories Of Damaging Earthquakes, Walter W. Hays
International Conference on Case Histories in Geotechnical Engineering
This paper contains illustrative case histories of the principal "forensic lessons" learned from multidisciplinary postearthquake investigations [United States Geological Survey, 1993] of damaging earthquakes throughout the world. Since 1980, the most notable earthquakes include those that struck Kobe, Japan in 1995, Northridge, California in 1994, Hokkaido-Nansei-Oki, Japan and Khalari, India in 1993, Landers, California and Erzincan, Turkey in 1992, Costa Rica in 1991, the Philippines in 1990, Lorna Prieta, California in 1989, Spitak, Armenia in 1988, Mexico in 1985, and El Asnam, Algeria and Irpinia, Italy in 1980. Individually and collectively, these earthquakes have served as scientific laboratories to show …
Case Histories For Settlement Analysis In Ground Improved By Vertical Drain, Takaharu Shogaki, Hayato Moro, Minoru Matsuo
Case Histories For Settlement Analysis In Ground Improved By Vertical Drain, Takaharu Shogaki, Hayato Moro, Minoru Matsuo
International Conference on Case Histories in Geotechnical Engineering
The effects of anisotropy and sample disturbance on the consolidation parameters were investigated through laboratory testing, and the degree of sample disturbance on the consolidation parameters in the periphery of the drain is evaluated. A new method for settlement analysis, taking into consideration both sample disturbance and the retardation of the consolidation in the ground improved by vertical drain, is proposed. The effects of anisotropy and sample disturbance on the consolidation parameters in the ground improved by vertical drain are given as the function of the distance from the boundary of drain. In the undisturbed zone, the ratio of the …
Geotechnical Risk And Reliability From Theory To Practice, Lenka S. Timiovska
Geotechnical Risk And Reliability From Theory To Practice, Lenka S. Timiovska
International Conference on Case Histories in Geotechnical Engineering
Indeterminate combined with evaluating the safety of existing lifeline systems are, large and here one would expect format risk and reliability techniques to have found their most urgent need. Besides, risk analysis has languished in safety practice, is only now beginning to appear in established safety programs in my country. It is of interest to explore the reasons why this has been so, and to point the way to the adaptations that are necessary if risk analysis is to assume its deserved role in life-line systems and related areas of geotechnical practice. This paper has proposed that geotechnical conditions are …
Identification Of Potential Seepage Locations Along The Herbert Hoover Dike, Lake Okeechobee Fl., By Electromagnetic Geophysical Method. Prediction And Confirmation., Anthony L. Dipiero, Robert Ross, Samuel R. Honeycutt, Richard D. Lewis
Identification Of Potential Seepage Locations Along The Herbert Hoover Dike, Lake Okeechobee Fl., By Electromagnetic Geophysical Method. Prediction And Confirmation., Anthony L. Dipiero, Robert Ross, Samuel R. Honeycutt, Richard D. Lewis
International Conference on Case Histories in Geotechnical Engineering
This case history demonstrates the use of electromagnetic (EM) induction methods to examine known seepage locations and then predict future ones along the Herbert Hoover Dike (HHD) in south central Florida. The HHD forms an embankment dam 20 to 30 feet high and 140 miles long surrounding Lake Okeechobee. Approximately 26 miles of embankment was surveyed with EM induction. The objective of the EM survey was to identify active and potential foundation seepage locations and conduits. Areas of greater conductivity were often associated with seepage locations observed during a record high water event in October, 1995. These problems included boils …
Procedure To Predict Settlement Of Solid Waste Landfills Using Power Creep Law, Sanjeev Kumar
Procedure To Predict Settlement Of Solid Waste Landfills Using Power Creep Law, Sanjeev Kumar
International Conference on Case Histories in Geotechnical Engineering
Settlement prediction of solid waste landfills is important for their post-closure operation. Estimation of settlement of refuse is complex because of the mechanism of settlement and heterogeneity of the refuse. Several methods are available to predict the settlement of solid waste landfills. Based on the analysis of published measured data of four landfills, a unique relationship was recently developed between reference compressibility and rate of compression to predict refuse settlement using Power Creep Law. A step-by-step procedure is proposed to predict refuse settlement by using the Power Creep Law at a site for which the data from laboratory or field …
Toward Earthquake Resilient Cities In The 21st Century: Reduction Of Community Vulnerability, Walter W. Hays
Toward Earthquake Resilient Cities In The 21st Century: Reduction Of Community Vulnerability, Walter W. Hays
International Conference on Case Histories in Geotechnical Engineering
The focus of this paper is on earthquakes and earthquake-resilient communities in the United States. The paper describes what we have learned from the International Decade for Natural Disaster Reduction (IDNDR) and how we can build upon these experiences as we continue working toward the worldwide goal of natural-hazard-resilient cities in the 21st century.
Conference Program, Shamsher Prakash
Conference Program, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Foundation Damage Of Structures In Kobe And Remediation, Tamotsu Matsui
Foundation Damage Of Structures In Kobe And Remediation, Tamotsu Matsui
International Conference on Case Histories in Geotechnical Engineering
In this paper, foundation damage of structures in the 1995 Hyogoken-Nambu Earthquake was overviewed, mainly focusing on that of bridges and elevated highways, port and harbor facilities and buildings. Then, the remediation methods and works for damaged foundations were summarized, together with illustrating some examples. Finally, essentials of related subjects and suggestions on seismic design and remediation for foundations of structures were summarized for a further study.
Keynote Lecture: "Creating Case Histories The Hard Way", Ralph B. Peck
Keynote Lecture: "Creating Case Histories The Hard Way", Ralph B. Peck
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Measurement And Analysis Of Civil Engineering Vibrations, Jean-Lou Chameau, Glenn J. Rix, Laurel Empie
Measurement And Analysis Of Civil Engineering Vibrations, Jean-Lou Chameau, Glenn J. Rix, Laurel Empie
International Conference on Case Histories in Geotechnical Engineering
Man-made vibrations caused by construction activities, blasting, rail and vehicular traffic, and machinery can have an adverse impact on buildings and facilities, human occupants of buildings, and sensitive equipment housed within these facilities. Comparisons between vibrations are often difficult because of different methods used to measure, analyze, and interpret vibration data. To facilitate these comparisons, standard methods of selecting and mounting transducers, processing vibration data, and interpreting test results are reviewed. Specific measurement and analysis techniques and maximum allowable vibration criteria used for evaluating the influence of vibrations on humans, the potential for cosmetic damage to structures, and the impact …
Design And Construction Of The Seattle Symphony's Benaroya Hall Above An Old Railroad Tunnel, Carole L. B. Mitchell
Design And Construction Of The Seattle Symphony's Benaroya Hall Above An Old Railroad Tunnel, Carole L. B. Mitchell
International Conference on Case Histories in Geotechnical Engineering
Benaroya Hall, the new home of the Seattle Symphony, is located directly over an old railroad tunnel in downtown Seattle. The railroad tunnel was hand excavated in the early 1900s; the tunnel excavation caused considerable settlement of the buildings and streets above. The tunneling disturbance and subsequent rotting of timber supports resulted in numerous voids in the vicinity of the tunnel. Excavation for the Benaroya Hall removed up to 55 feet of soil overburden and came to within 12 feet of the tunnel crown. The foundations for the symphony hall were required to protect the railroad tunnel from carrying symphony …
Failure Of Buildings On Mound ̶ A Case Study, U. N. Sinha
Failure Of Buildings On Mound ̶ A Case Study, U. N. Sinha
International Conference on Case Histories in Geotechnical Engineering
The century old buildings situated on mound at Jais town, Rae Bareli (Uttar Pradesh), India, failed after heavy rainfall. The paper presents the convincing evidence of the failure or buildings through photographs. The prime cause of failures and suggestions are also reported.
A Follow-Up Of Two Different Foundation Principles, Sven Hansbo, Leif Jendeby
A Follow-Up Of Two Different Foundation Principles, Sven Hansbo, Leif Jendeby
International Conference on Case Histories in Geotechnical Engineering
In a special lecture held by the senior author at the Int. Conf. on Case Histories in Geotechnical Engineering in St. Louis (Hansbo, 1984) a follow-up was presented of the observations on two nearby buildings founded on deep deposits of soft clay according to different foundation principles. In one case the total load of the building is carried by friction piles with a factor of safety against failure equal to 3 while, in the other case, the load is partly carried by contact pressure at the raft/soil interface and partly by friction piles with a design load equal to creep …
Heavy Crane Foundations On Soft Clay, John R. Davie, Kenneth R. Bell, Mark B. Fitzsimmons, Daniel A. Haggerty
Heavy Crane Foundations On Soft Clay, John R. Davie, Kenneth R. Bell, Mark B. Fitzsimmons, Daniel A. Haggerty
International Conference on Case Histories in Geotechnical Engineering
A very large mobile crane was used to lift a 3,150 kN steam generator through the roof of the containment building of a nuclear power plant. The maximum load on the crane was 19.8 MN, giving a track pressure of almost 600 kPa. Soil conditions were stiff clay underlain by softer clay. This paper describes the bearing capacity and settlement analysis performed to establish a suitable shallow foundation for the crane. The foundation load test confirmed that soil conditions had been adequately defined and that the foundation design was satisfactory.
Shallow Foundations On A Diagenetic Limestone Formation In Qatar, W. Akili, Robert M. Jackson
Shallow Foundations On A Diagenetic Limestone Formation In Qatar, W. Akili, Robert M. Jackson
International Conference on Case Histories in Geotechnical Engineering
The near surface limestones in Qatar have complex lithologies and have experienced diagenetic changes after deposition. A variety of weak limestones have been encountered in combination with matrix material (rock fragments and secondary fraction). The matrix, often clayey, sometimes cemented with gypsum, anhydrite or calcite grains, is not a rock nor does it qualify as a soil. These materials are: (i) difficult to sample in the undisturbed state. (ii) extremely variable m composition and proprieties, and (iii) appear susceptible to degradation, particularly when wet. This paper presents geotechnical information from selected sites where these materials (diagenetic limestone) have been encountered. …
Grouting In Consideration Of Predominant Direction Of Joints In Rock Masses, Masaki Kawasaki, Hitoshi Yoshida, Yoshikazu Yamaguchi
Grouting In Consideration Of Predominant Direction Of Joints In Rock Masses, Masaki Kawasaki, Hitoshi Yoshida, Yoshikazu Yamaguchi
International Conference on Case Histories in Geotechnical Engineering
We conducted a grouting test in rock mass having steep joints with predominant direction, assuming blanket grouting for embankment dams. Vertical holes and inclined holes designed in consideration of the predominant direction of the joints were used as grouting holes, and the hole spacing was determined such that the number of grouting holes per unit area on a joint was the same for both cases. As a result, both tests saw a similar improvement despite the fact that the test using inclined holes had wider hole spacing than the test using vertical holes on the ground surface. We can also …
Natural Slope Failure On Weathered Andesitic Breccia In Samigaluh Area, Indonesia, Dwikorita Karnawati
Natural Slope Failure On Weathered Andesitic Breccia In Samigaluh Area, Indonesia, Dwikorita Karnawati
International Conference on Case Histories in Geotechnical Engineering
Six events of landslides occurred simultaneously on weathered Andesitic Breccia in Samigaluh Area, following the heavy rainfall. Field investigation, laboratory works and slope stability analysis were carried out to assess the mechanism of the failures, their controlling factor and identify the triggering rainfall characteristics. It was found that the rainfall was the key factor inducing the failure. However, further investigation which incorporates slope hydrodynamic numerical modeling is still required, in order to find the triggering rainfall characteristics. In addition, the role of slope inclination was less significant than the soil and vegetation types covering the slopes. Finally, the landslide susceptibility …
Study Of Ground Movement In A Mining Area, Anton Chirica, Andrei Olteanu, Rolland Mlenajek, Cristian Banciu
Study Of Ground Movement In A Mining Area, Anton Chirica, Andrei Olteanu, Rolland Mlenajek, Cristian Banciu
International Conference on Case Histories in Geotechnical Engineering
The inhabitants of a village situated in the southern side of Romania have sued juridical action the local mining company considering that the coal quarry and the new sterile dump situated near up the locality, are the main cause of the civil buildings damages. In order to establish the true causes of damages occurred in the village area a number of 129 buildings has been monitorised and 19 geotechnical drillings were dug surveying the ground structure. Inclinometric tests have been performed for one year in 15 boreholes spread on several profiles. A global stability analysis was performed as well. Our …
Sinkholes In Earth Dam Kota Barrage [India], Narendra Kumar, V. K. Talwar, R. K. Pal
Sinkholes In Earth Dam Kota Barrage [India], Narendra Kumar, V. K. Talwar, R. K. Pal
International Conference on Case Histories in Geotechnical Engineering
Kota Barrage is the lowermost hydraulic structure amongst the series of four dams built across the river Chambal, a tributary of the river Yamuna in the Ganga Basin. It is situated near the Kota City, Rajasthan in India and is in operation since November, 1960 with an irrigation potential of 679 thousand ha in two adjoining states of Rajasthan and Madhya Pradesh. It comprises of a composite structure consisting of a 268.2m long earth and rockfill dam and a 304.8m long masonry spillway, the total length being 573.0m The earth/rockfill dam abuts in the right against a hillock over which …
Predictions Of Vertically Vibrating Foundation Response With Modified Radiation Damping, Shamsher Prakash, Y. Tseng
Predictions Of Vertically Vibrating Foundation Response With Modified Radiation Damping, Shamsher Prakash, Y. Tseng
International Conference on Case Histories in Geotechnical Engineering
A simple solution technique for evaluating the response of a surface or embedded foundation under vertical vibrations in a homogeneous soil has been developed. The effects of soil nonlinearity on shear modulus and material damping, frequency on stiffness and radiation damping, and embedment of foundation on stiffness and radiation damping have been considered. A computer program has been developed based on the Elastic Half Space (EHS) analog technique (Lysmer and Richart, 1966), to compute the response amplitude of both surface and embedded footings. The computed response has been verified by comparing it with measured data from Novak (1970). The predicted …
Authors' Addresses, Multiple Authors
Authors' Addresses, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Paper Review Committee, Multiple Members
Paper Review Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Steering Committee, Multiple Members
Steering Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Table Of Contents, Multiple Authors
Table Of Contents, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors
Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
From The Past To The Future Of Landfill Engineering Through Case Histories, R. Kerry Rowe
From The Past To The Future Of Landfill Engineering Through Case Histories, R. Kerry Rowe
International Conference on Case Histories in Geotechnical Engineering
The advances in landfill engineering are outlined based on a number of case histories illustrating past problems, hydraulic performance of clay liners, diffusive transport through liners, hydraulic containment and clogging of leachate collection systems. The importance of conventional geotechnical considerations (e.g. stability) will also be highlighted with reference to a number of cases. Finally, the recent advances in landfill operations are illustrated with respect to a modern landfill. It is concluded that, provided all key failure mechanisms are considered in the design, construction and operation of the facility, modern landfills should provide environmental protection both today and well into the …
Rigid And Flexible Retaining Walls During Kobe Earthquake, Susumu Lai
Rigid And Flexible Retaining Walls During Kobe Earthquake, Susumu Lai
International Conference on Case Histories in Geotechnical Engineering
An overview is presented on seismic performance of rigid and flexible retaining walls based on case histories during earthquakes, notably from the 1995 Kobe earthquake. Three critical issues are discussed out of these case histories: (l) If the effects of an earthquake motion are approximated in terms of a pseudo-static inertia force using the Mononobe-Okabe equation, the equivalent seismic coefficient for evaluating gross stability of retaining walls should be less than 100 %, about 60 % on average, of a peak ground acceleration specified as a fraction of gravity (amax/g); (2) Liquefaction or excess pore water pressure increase …
Barrettes Designed As Friction Foundations: A Case History, Chu-Eu Ho, Ching-Heng Lim
Barrettes Designed As Friction Foundations: A Case History, Chu-Eu Ho, Ching-Heng Lim
International Conference on Case Histories in Geotechnical Engineering
This paper describes the performance of a fully instrumented test barrette subjected to an ultimate loading of 30932 kN. The load transfer characteristics were measured by vibrating wire strain gauges. Rod extensometers recorded the displacements at several locations along the barrette shaft. Test results indicated that substantial loads were carried in shaft resistance. The end bearing component was reduced by poor toe conditions caused by debris accumulation at the trench base. The load - displacement behaviour and factor of safety in barrette foundation design LS discussed. The toad test results of a subsequent working barrette confirmed that the performance of …