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Full-Text Articles in Geotechnical Engineering
Chemical And Lime Stabilization Of Expansive Clay, L. D. Johnson
Chemical And Lime Stabilization Of Expansive Clay, L. D. Johnson
International Conference on Case Histories in Geotechnical Engineering
Two soil stabilization treatments were performed on highly expansive clay in Fort Sam Houston San Antonio, TX, to reduce the potential for swell. Lime slurry pressure injection is considered primarily a preswell treatment with some clay alteration. Chemical injection using a proprietary potassium based chemical is considered to alter the clay. Both treatments effectively reduced the potential for swell.
Soft Clay Ground Improvement Of Ningbo International Airport, X. R. Zhu, Q. Y. Pan, K. H. Xie
Soft Clay Ground Improvement Of Ningbo International Airport, X. R. Zhu, Q. Y. Pan, K. H. Xie
International Conference on Case Histories in Geotechnical Engineering
Ningbo International Airport is built on the soft clay ground first in China. It has a runway 3,000m in length and 45m in width. The thickness of soft clay is greater than 32m. The calculating consolidation settlement is 0. 48m, far beyond to allowable limit. The soft clay ground is improved by wick drain and surcharge precompression. The airport has been put in service since July, 1990. The process and the results of a full scale embankment test, the ground improvement and the settlement observation are described. The influence of the smear and the well resistance of the wick drain …
Soil Improvement Method Using Low Strength Pile With Permeability, Yoshio Wakame, Masato Majima
Soil Improvement Method Using Low Strength Pile With Permeability, Yoshio Wakame, Masato Majima
International Conference on Case Histories in Geotechnical Engineering
In order to reduce differential settlement and prevent heaving of surrounding ground due to fill loading, a new method using low strength pile with permeability has been devised. The pile material have been composed of hydraulic granulated slag and 12-20% cement of slag. After the design method having been presented on basis of model loading test result, soil improvement have been put to practical use with sand drain method. As a result, it have been confirmed that this method has been effective for reduction settlement, prevention heaving and same drainage as sand drain method.
Field Measurements Of A Diaphragm Wall Foundation, T. Matsui, H. Nakajima, T. Nagano, T. Hosoi, Y. Fukuda, K. Hayashi
Field Measurements Of A Diaphragm Wall Foundation, T. Matsui, H. Nakajima, T. Nagano, T. Hosoi, Y. Fukuda, K. Hayashi
International Conference on Case Histories in Geotechnical Engineering
Field measurements of a small-sectioned diaphragm wall foundation for a highway bridge have been performed to understand the stability of the trench wall during construction. In this paper, a case history on the field measurements of the diaphragm wall foundation during deep trench excavation is presented.
Soil Improvements Of An Inhomogeneous Reclaimed Ground, Sasumu Yasuda, Hiroshi Suzuki, Hideotoshi Takemoto, Kohi Hayashi, Kazuo Saito, Naomi Ine
Soil Improvements Of An Inhomogeneous Reclaimed Ground, Sasumu Yasuda, Hiroshi Suzuki, Hideotoshi Takemoto, Kohi Hayashi, Kazuo Saito, Naomi Ine
International Conference on Case Histories in Geotechnical Engineering
A coal storage yard for an electric power plant was to be constructed on reclaimed land in northern Japan. As the reclaimed land consisted of loose sand and soft silt, a deep well excavation method, a dynamic compaction method and a sand compaction method were selected to improve clayey grounds, sandy grounds and intermediate grounds, respectively. After the improvement, no obvious settlement and no liquefaction has been induced.
Improvement Of Soft Clay For 50000 M3 Oil Storage Tank, Shiming Wu, Yunmin Chen, Wei Feng
Improvement Of Soft Clay For 50000 M3 Oil Storage Tank, Shiming Wu, Yunmin Chen, Wei Feng
International Conference on Case Histories in Geotechnical Engineering
A design of soil improvement for building a petroleum storage tank with a capacity of 50000 M3, and its construction are presented in this paper. Mono-axis deep mixing technique was applied for this project. Laboratory and in-situ test on cemented soil both for static and dynamic properties were conducted, based on which analysis of strength for static and seismic loading can be used for the practice of the project.
Compaction Columns Field Tests In Heterogeneous Soil Profile, Carlos Blanco, Bernardo Villegas, Jose Sgambatti
Compaction Columns Field Tests In Heterogeneous Soil Profile, Carlos Blanco, Bernardo Villegas, Jose Sgambatti
International Conference on Case Histories in Geotechnical Engineering
Two pilot tests were conducted on two different areas to evaluate the effects of compaction columns on the engineering properties of a sand-clay layered soil profile. In the first field test, 120 stone columns were constructed using vibro replacement and casing-ramming techniques, in a equilateral triangular array with different spacing. In the second field test, 20 stone columns were constructed using casing-ramming technique, in a equilateral triangular array spaced 3m c/ c. In order to evaluate, the stone columns effectiveness and effects, both a detailed in-situ testing and instrumentation programs were planned to be carried out in five different stages. …
Soil Strengthening Of Sutlej-Yamuna Link Canal Power Houses In Punjab, India, K. C. Verma
Soil Strengthening Of Sutlej-Yamuna Link Canal Power Houses In Punjab, India, K. C. Verma
International Conference on Case Histories in Geotechnical Engineering
Two Hydro Power Houses are under construction on the Sutlej Yamuna Link Canal emanating from river Sutlej at Nangal in the State of Punjab, India. These Power Houses, one (2X18 MW) at Ropar and another (2X7.45Mw) at Rajpura had silty-clay soil strata with heterogeneous dispersion under the Power House. Further bearing capacity of the foundation was much lower than the impressed loads and settlements were heavy, while permissible tilt in the vertical shafts of the Hydro-generating machines is 3 mm in 10M height. So it was necessary to provide strengthening measures at both the sites. For Ropar Hydel Power House …
Site Geology And Tunneling Methods, S. K. Jain
Site Geology And Tunneling Methods, S. K. Jain
International Conference on Case Histories in Geotechnical Engineering
Site geology, subsurface and ground water conditions play a vital role in the design of underground structures and the selection of appropriate construction methods and equipments. This paper describes a tunnel project where site subsoils and geo-hydrology dictated the use of various tunneling methods employed at the site. The project is an interceptor sewer tunnel in Staten Island, New York, as a part of the Oakwood Beach Water Pollution Control Project, and consists of two pumping stations and approximately 6.5 miles of sewer along Hylan Boulevard, as shown on Figure 1. The diameter of the tunnel varies from 66 to …
A Study On Electro-Osmotic Consolidation Of Soft Clays, G. Lefebvre, T. V. Pavate
A Study On Electro-Osmotic Consolidation Of Soft Clays, G. Lefebvre, T. V. Pavate
International Conference on Case Histories in Geotechnical Engineering
The effects of an electro-osmotic treatment on a soft sensitive clay from Eastern Canada were examined based on the laboratory tests performed on undisturbed specimens. The interpretation of the tests focus on the non-homogeneity of the treatment, the influence of polarity reversal and strong induration which develops near the anode in addition to the consolidation.
Building Collapse Due To Shallow Trench Excavation, S. J. Vitton, R. C. Brown
Building Collapse Due To Shallow Trench Excavation, S. J. Vitton, R. C. Brown
International Conference on Case Histories in Geotechnical Engineering
A building collapse is investigated in which a shallow trench, excavated along the length of the building, resulted in the building's collapse. An investigation indicated that the trench had been excavated within 1 ft (0.3 m) of the foundation and that the foundation had been constructed on approximately 7 ft (2.1 m) of soft silty clay with the bottom portion of this soil highly saturated. The bearing capacity of the foundation, prior to excavation, was estimated to have a safety factor as low as 1.5. As a result of the proximity of the trench to the foundation and the soft …
Development On Florida's Phosphate Mine Lands, W. A. Ericson, L. P. Moore, L. D. Madrid
Development On Florida's Phosphate Mine Lands, W. A. Ericson, L. P. Moore, L. D. Madrid
International Conference on Case Histories in Geotechnical Engineering
A majority of Polk County, in central Florida, has been mined for phosphate in the past. Mining companies use the mined areas to deposit mining wastes such as the tailings sands and highly plastic clay materials that are associated with the beneficiation of phosphate ore. The clays are allowed to consolidate, but often, the resulting solids content or shear strength of the materials is very low even after several tens of years. One such area that was impacted by mining and subsequent clay disposal was to become a mobile home park. The developer did not investigate the subsurface conditions prior …
Investigation Of Hole Caving Due To Vibrations, W. N. Houston, S. L. Houston, K. D. Walsh
Investigation Of Hole Caving Due To Vibrations, W. N. Houston, S. L. Houston, K. D. Walsh
International Conference on Case Histories in Geotechnical Engineering
Foundations for a power plant were constructed by drilling holes in cemented sand for 36" piers. The boreholes in the cemented sand did not cave. A major design change required the demolition of the original piers and pile caps with large hoe rams and the drilling of new 36" boreholes in the same location. The new drilling contractor experienced widespread caving, which he was unable to remedy. The authors first investigated the possibility that the second contractor used inferior equipment or techniques. Then the authors investigated the possibility that a loss in soil cohesion occurred due to the vibrations from …
Soil Remediation Via Environmentally Processed Asphalt (Epa), S. M. Testa, D. L. Patton
Soil Remediation Via Environmentally Processed Asphalt (Epa), S. M. Testa, D. L. Patton
International Conference on Case Histories in Geotechnical Engineering
Several methodologies are available for the remediation of contaminated soils including bioremediation, vapor extraction, chemical fixation, incineration and direct disposal. A proven innovative and cost effective alternative for the fixation of contaminated soils is via cold-mix Environmentally Processed Asphalt (EPA). EPA methodology utilizes contaminated soil as an ingredient in an industrial process to produce a commercially viable product. Petroleum hydrocarbon and metal affected soil is incorporated with an asphalt emulsion and aggregate to produce a range of cold-mix asphalt product that fulfills the requirements of a variety of end uses. This viable and creative use which is within the intent …
Discussions And Replies Session 12, C. A. Dougherty, Subijoy Dutta, J. Blayne Kirsch, Clifford Knitter
Discussions And Replies Session 12, C. A. Dougherty, Subijoy Dutta, J. Blayne Kirsch, Clifford Knitter
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Session 10, 11, 12 − Opening Remarks, Shiming Wu
Session 10, 11, 12 − Opening Remarks, Shiming Wu
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Anchored Cutoff Structure Design And Construction, G. K. Burke, G. T. Brill
Anchored Cutoff Structure Design And Construction, G. K. Burke, G. T. Brill
International Conference on Case Histories in Geotechnical Engineering
As part of a new cogeneration plant being built in Jacksonville, Florida, a 31-foot deep excavation was required to install a 173-foot by 53-foot coal unloading structure in loose to medium-dense fine sands with shallow ground water. A conventional system of excavation support would typically consist of installing and maintaining a dewatering system and driving sheet piles. However, due to the potential for shallow contaminated ground water at the site and a restricted amount of inflow treatment capacity, a nearly complete cutoff or "bathtub" structure was required. A system that is relatively new to the United States was designed and …
Case History Of Aquifer Thermal Energy Storage (Ates), C. Mirza
Case History Of Aquifer Thermal Energy Storage (Ates), C. Mirza
International Conference on Case Histories in Geotechnical Engineering
Aquifer Thermal Energy storage (ATES) is a relatively new energy conserving technology which enables subsurface seasonal storage of freely available cold of winters and heat of summers for re-use in the opposite season. Thermal energy is stored in aquifers, groundwater serving as the medium of energy transfer. This case history describes an ATES installation for an office building in Ontario. Groundwater from a 10 m thick sandy aquifer at the 60 m depth is pumped from one pair of wells and re-injected, after extraction or addition of heat, into an opposing pair of wells. ATES technology not only conserves non-renewable …
Discussions And Replies Session 13, B. S. Y. Chen
Discussions And Replies Session 13, B. S. Y. Chen
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Evaluation Of Consolidation Parameters By Graphical Method, T. Shogaki, M. Kaneko
Evaluation Of Consolidation Parameters By Graphical Method, T. Shogaki, M. Kaneko
International Conference on Case Histories in Geotechnical Engineering
The applicability of the graphical method to estimate the consolidation parameters in the conventional oedometer test is investigated experimentally. The behaviors of settlement and the pore water pressure at the bottom of specimen under one dimensional consolidation for disturbed cohesive soil are discussed in this study, and the length of increment for the graphical method is given as the function of the consolidation pressure. It should be said that the values of consolidation parameters obtained by the graphical method can be same in a practical use as that by the classical methods. When both the graphical method and its application …
Marta East Line Tunnels Under I-285, Atlanta, Georgia, M. R. Funkhouser, K. P. Akins
Marta East Line Tunnels Under I-285, Atlanta, Georgia, M. R. Funkhouser, K. P. Akins
International Conference on Case Histories in Geotechnical Engineering
The Metropolitan Atlanta Rapid Transit Authority combined three new technologies − microtunneling, jet grouting, and rock-socketed "minipiles" − to successfully construct twin rail tunnels under an eight-lane highway with as little as 4-1/2 feet of cover. Geotechnical parameters, tunneling method selection, and construction methods are discussed. Ground response and monitoring are summarized.
Preliminary Studies Of Ground Motions At Treasure Island And Yerba Buena Sites During The 1989 Loma Prieta Earthquake, W. D. Liam Finn, Guoxi Wu, Carlos E. Ventura
Preliminary Studies Of Ground Motions At Treasure Island And Yerba Buena Sites During The 1989 Loma Prieta Earthquake, W. D. Liam Finn, Guoxi Wu, Carlos E. Ventura
International Conference on Case Histories in Geotechnical Engineering
Site response analyses were conducted at the Treasure Island site where surface motions were recorded during the Loma Prieta earthquake. The analyses were conducted using a nonlinear dynamic effective stress method which took into account the effects of the liquefaction that occurred at the site. The rock motions recorded at nearby Yerba Buena Island were used as input motions. Computed and recorded ground motions transverse to the direction of wave propagation and associated response spectra were in good agreement. Agreement was also good in the radial direction, except in certain frequency bands higher than 1.25 Hz. Coherence studies showed that …
Response Of House Foundations During The Loma Prieta Earthquake, Gennaro G. Marino
Response Of House Foundations During The Loma Prieta Earthquake, Gennaro G. Marino
International Conference on Case Histories in Geotechnical Engineering
Significant damage to house foundations has resulted from the Lorna Prieta earthquake. In some cases the cost to repair the foundation and to make the necessary seismic upgrades exceeded the market value of the house. This level of foundation damage was found at various distances from the epicenter and in different geologic settings. Presented in this paper are observations made on the foundation responses to various ground effects from the earthquake shaking. Also pointed out is the difference in performance of various affected foundation systems.
Some Aspects On The Falyum-Egypt Earthquake Of October 12, 1992, Mohamed A. El-Sohby, Mohamed A. Bahr, Mohamed H. Riyad
Some Aspects On The Falyum-Egypt Earthquake Of October 12, 1992, Mohamed A. El-Sohby, Mohamed A. Bahr, Mohamed H. Riyad
International Conference on Case Histories in Geotechnical Engineering
A moderate size earthquake shocked the southern west part of Cairo by 35km at 15:15 P.M. local time on October 12, 1992 causing wide spread devastation leading to loss of many lives and structure damages along the surrounding big cities. The paper describes the behavior of two identical residential buildings constructed on two different site soil conditions. The lesson learnt from the performance differences are highlighted, and some geotechnical and structural aspects are recorded.
Analysis And Performance Of Raft And Raft-Pile Systems, I. K. Lee
Analysis And Performance Of Raft And Raft-Pile Systems, I. K. Lee
International Conference on Case Histories in Geotechnical Engineering
A brief review is made of the development of the analyses of structure-raft and structure-raft-pile systems. Examples are presented to illustrate the scope of present-day analyses. The applicability of the linear analysis is examined by comparing predicted and measured values of settlements, contact pressure and pile loads. Consideration is given to the influence of the soil constitutive model on predicted values.
Leaning Tower Of Pisa — Updated Information, M. Jamiolkowski, R. Lancellotta, C. Pepe
Leaning Tower Of Pisa — Updated Information, M. Jamiolkowski, R. Lancellotta, C. Pepe
International Conference on Case Histories in Geotechnical Engineering
The paper is aimed at giving information on the present situation of the Leaning Tower of Pisa and on the activities undertaken for its safeguard by the International Committee appointed in May 1990 by the Italian Government. After a brief review of the subsoil conditions of the structural features and of the observed movements of the Tower, the activities undertaken by the Committee are also summarized.
Case Histories: Geology, Value Engineering And Deep Foundations In New York Area, S. K. Jain
Case Histories: Geology, Value Engineering And Deep Foundations In New York Area, S. K. Jain
International Conference on Case Histories in Geotechnical Engineering
The geologic and subsurface conditions in the Metropolitan New York area are highly variable and complex. The Building Code of the City of New York (henceforth, The Code) requires soil identification based on their geological history and engineering characteristics. The code is very stringent and it specifies elaborate subsurface exploration, field testing and geotechnical analysis for the foundation design and its installation. In this paper three deep foundation construction case histories in the New York City are presented which emphasize the importance of site geology, subsurface exploration and value engineering.
A Case History Of Raft Foundation Behavior For A Large-Scaled Building Complex, M. Aoki, M. Maruoka, N. Sahasi, Y. Okamura, Y. Ikuta
A Case History Of Raft Foundation Behavior For A Large-Scaled Building Complex, M. Aoki, M. Maruoka, N. Sahasi, Y. Okamura, Y. Ikuta
International Conference on Case Histories in Geotechnical Engineering
This paper describes the field observation of settlement of a raft foundation for a large scale building complex in Nagoya city in Japan. The complex consists of a 28 story hotel, a 15 story office building and a low-storied banquet hall in the middle all of which are supported on a single 80 m square basement on raft foundation. Since the load on the foundation is non-uniform, the differential settlement of the foundation was investigated analytically, taking into consideration the interaction between the ground and the raft. To confirm the validity of the design, measurements were conducted for about 2 …
Case History Of Soil Improvement For A Large-Scale Land Reclamation, Bang W. Shin, Eun C. Shin, Sun W. Kim, Byung C. Yeo, Paghunath Dass
Case History Of Soil Improvement For A Large-Scale Land Reclamation, Bang W. Shin, Eun C. Shin, Sun W. Kim, Byung C. Yeo, Paghunath Dass
International Conference on Case Histories in Geotechnical Engineering
In recent years, land reclamation works have been extensively implemented along the coastal lines for a variety of purposes. This paper relates to the case history of a land reclamation project for a steel mill complex construction in Korea. Site improvement techniques used in this project include construction of sand drains and pre loading. Construction procedures of sand drains are described as well as staged loading process along with field observations. Field measurement of settlement and theoretically estimated values are compared. The results of standard penetration tests and unconfined compression tests at various depths of soil, and time intervals are …
Case History Of Foundation Design For 50000 M3 Oil Tank, Hai-Chen Hsu
Case History Of Foundation Design For 50000 M3 Oil Tank, Hai-Chen Hsu
International Conference on Case Histories in Geotechnical Engineering
This paper introduces the case history of foundation design for 50000 m3 oil tank in collapsible loess region. After field deep blasting test and laboratory soil test, author design deep Explosion-Squeeze-Foundation under the foundations of two oil tanks in a refinery for refining 5 million tons of crude oil per year. Diameter of E.S.F. :D1=66.43m; thickness of E.S.F.: H1=12m. It was the largest engineering practice in collapsible loess region in China in 1979 that deep foundation of 50000 cubic meter oil tanks are built by explosion squeeze technique first time.