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Articles 2041 - 2055 of 2055
Full-Text Articles in Engineering
Foundation Movement Monitoring Of Heavy Structures – A Case History, M. R. Lewis, A. Sanver
Foundation Movement Monitoring Of Heavy Structures – A Case History, M. R. Lewis, A. Sanver
International Conference on Case Histories in Geotechnical Engineering
Accurate monitoring of settlement beneath the main structures of a nuclear power plant not only demonstrates the stability of the structures, but also confirms predicted settlements, thereby verifying the geotechnical parameters used in the design. At the Grand Gulf Nuclear Station near Port Gibson, Mississippi, rebound and settlement monitoring has been continuous since the start of site excavation in 1974. As a result, actual settlements have been shown to be close to the predicted levels. This paper discusses the planning, installation and monitoring of the settlement instrumentation and reviews the factors that were important to the choice of instrumentation.
Foundations On Friction Creep Piles In Soft Clays, Sven Hansbo
Foundations On Friction Creep Piles In Soft Clays, Sven Hansbo
International Conference on Case Histories in Geotechnical Engineering
In this lecture, a new principle for design of building foundations on friction piles in soft, cohesive soils is presented. Four case records on buildings designed according to the new principle are analysed in respect of total and differential settlement. In two cases, a comparison has been made with buildings on conventional friction piles. The savings in foundation cost of the buildings designed with creep piles is evaluated in relation to buildings designed with conventional friction piles. The lecture is a synthesis of research and development carried out together with Leif Jendeby, M.Sc., Chalmers University of Technology and Rolf Källström, …
General Report A For Theme Nine – Case Histories In Subsidence Of Soils, Tunnels And Shafts In Soft Ground, Waste Disposal Sites And Pavements, Hal Aldrich
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
General Report B For Theme Nine – Geotechnical History Of Projects Other Than Presented In Sessions 1-8, Charles Mansur
General Report B For Theme Nine – Geotechnical History Of Projects Other Than Presented In Sessions 1-8, Charles Mansur
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Geotechnical Aspects Of The Fort Mchenry Tunnel - Design And Construction, S. K. Sarkar, G. A. Munfakh
Geotechnical Aspects Of The Fort Mchenry Tunnel - Design And Construction, S. K. Sarkar, G. A. Munfakh
International Conference on Case Histories in Geotechnical Engineering
The geotechnical considerations affecting the design and construction of an immersed-tube tunnel are presented. Construction of the tunnel required deep excavations in overconsolidated fissured and slickensided clay deposits. Undrained, long-term residual and fully softened drained strength parameters were determined. The depth of excavation and the life of the cut slope were considered in selecting the design parameters for the slope study analysis. A tied-back soldier pile and lagging system was used for protection of the east end excavation in a congested urban area. Each tie-back was tested according to a simple acceptance criteria developed during construction. Lateral displacements measured behind …
Ground Improvement For Oil Tank Farm In Indonesia, A. F. Abbs, J. M. Cognon, R. W. N. Kelsey
Ground Improvement For Oil Tank Farm In Indonesia, A. F. Abbs, J. M. Cognon, R. W. N. Kelsey
International Conference on Case Histories in Geotechnical Engineering
This case study describes the use of ground improvement to treat a highly variable site, where new oil storage tanks were constructed. Varied techniques were used comprising a combination of dynamic compaction, preload, vertical drains and replacement. Settlement data from the storage tanks during water test shows the treatment to have been successful.
Ground Movement Characteristics Above Mined Panels In Appalachia-An Empirical Approach, M. Karmis, T. Triplett, P. Schillizzi, G. Hasenfus
Ground Movement Characteristics Above Mined Panels In Appalachia-An Empirical Approach, M. Karmis, T. Triplett, P. Schillizzi, G. Hasenfus
International Conference on Case Histories in Geotechnical Engineering
The growing recognition of mining subsidence and its effects has provoked numerous investigations into the modeling and prediction of this phenomenon. Through an analysis of case histories and examination of the various modeling techniques, it has become apparent that empirical studies currently represent the most realistic approach to this problem. However, the collection, analysis and interpretation of subsidence and strain data acquired from case studies presents substantial difficulties, due to varying monitoring techniques and methods of analysis. In this paper it is suggested that a prescribed monitoring program could eliminate these problems and ensure quality data by standardizing the measurement …
Ground Response, Baltimore Lexington Market Tunnels, J. G. Engels, S. J. Calabrese
Ground Response, Baltimore Lexington Market Tunnels, J. G. Engels, S. J. Calabrese
International Conference on Case Histories in Geotechnical Engineering
Soil response data and the results of soil deformation analyses are presented for twin tube rapid transit tunnels constructed in soil. The data collection and analyses were performed during the construction of the Lexington Market Line Tunnels in Baltimore, MD between 1977 and 1980. Sources and volumes of ground loss around the tunnels and the resulting ground surface settlement patterns are discussed. Analyses are presented indicating that substantial volume expansion of the soil over the tunnel occurred during construction. Comparisons are made to similar analyses of data reported in the literature for other tunnels driven in similar geologic conditions.
Highway Interchange Constructed With Slurry Walls, E. Itzig Heine, Frank A. Mcdonough, Surinder Singh
Highway Interchange Constructed With Slurry Walls, E. Itzig Heine, Frank A. Mcdonough, Surinder Singh
International Conference on Case Histories in Geotechnical Engineering
The use of slurry walls to support 40 feet high embankments and bridge structures at Techwood-Spring Connector, part of Williams Street Interchange in Atlanta, is described. Advantages of using slurry walls in lieu of conventional walls are discussed.
Improvement Of A Dumped Rockfill Foundation By Dynamic Consolidation, Adrian Wightman, Nelson F. Beaton
Improvement Of A Dumped Rockfill Foundation By Dynamic Consolidation, Adrian Wightman, Nelson F. Beaton
International Conference on Case Histories in Geotechnical Engineering
The paper describes an Industrial Park development, on the British Columbia coast, where Dynamic Consolidation was chosen to densify a loose rockfill prior to construction of a modern high capacity sawmill on shallow foundations. The design and execution of the compaction are described. The in situ tests used to monitor the compaction are described and results presented. It is concluded that the desired result was achieved, and this is supported by a survey of foundation elevations taken four years after construction.
In Situ Stabilization Of Two Industrial Sites By Dynamic Compaction, John F. O'Brien, Charles P. Gupton
In Situ Stabilization Of Two Industrial Sites By Dynamic Compaction, John F. O'Brien, Charles P. Gupton
International Conference on Case Histories in Geotechnical Engineering
The authors directed selection and control of two large-scale dynamic compaction projects on largely cohesionless soils in Bangladesh and Spain. Both projects included intensive in-situ quality control testing. The findings of the control work is discussed. Based on this work and comparison with published data guidelines for estimating the effectiveness of dynamic compaction are presented.
India's First Venture Relating To Subsurface Drainage By Horizontal Drains, T. K. Natarajan, A. V. S. R. Murty, Deep Chandra
India's First Venture Relating To Subsurface Drainage By Horizontal Drains, T. K. Natarajan, A. V. S. R. Murty, Deep Chandra
International Conference on Case Histories in Geotechnical Engineering
Landslides in the Nilgiris district in 1978-79 1 caused heavy damages to property and human life. The field studies indicated that in certain spots, the build up of excess hydrostatic pressure, caused by direct and indirect ingress of water into the soil mantle, is the main cause for certain landslides in the region. The paper attempts to give the total case history relating to a pioneering venture of its kind towards the correction of landslides undertaken in India. The case history assumes special significance in as much as the horizontal drains successfully installed for the first time in this country, …
Instrumentation Of A Sewer Tunnel In Weak Singapore Soils, K. W. Lo, G. P. Karunaratne, S. L. Lee
Instrumentation Of A Sewer Tunnel In Weak Singapore Soils, K. W. Lo, G. P. Karunaratne, S. L. Lee
International Conference on Case Histories in Geotechnical Engineering
The effects of tunnelling in soft ground consisting mainly of Singapore marine clay were recently monitored to establish ground response characteristics. A sewer tunnel of 2.1 m square section was driven at a depth of 6.3 m in this soil by jacking conventional shield and face supports against installed timber lining. Ground response was monitored by an assortment of field instruments read over several weeks' duration. Peck's proposal (1969) of fitting a normal distribution profile to lateral surface settlement field plots when a heading is well past, and the suggestion by Oshikoshi et al 0978) that similar profiles may be …
Mechanism Of Dynamic Consolidation And Its Environmental Effect, Zhong-Qi Wang, Xiang-Iin Deng
Mechanism Of Dynamic Consolidation And Its Environmental Effect, Zhong-Qi Wang, Xiang-Iin Deng
International Conference on Case Histories in Geotechnical Engineering
This paper is contributed as case histories in ground soil improvement with particular emphasis of dynamic consolidation. The authors try to present as much as they got from the field testings and observations including vibrational parameters, pore pressures, stereoscopic photogrammetry, etc. in order to trace the real behaviour of ground movement during tamping. It is believed that all the data got from the field work are rather informative and illustrative than that from theoretical modelling in the laboratory. Thus, some highlights relating effective thickness of compaction, maximum spacing between compaction points, number of blows for optimum tamping and seismic attenuation …
Movements Around Transit Tunnels In Mixed Ground, L. Edgers, D. E. Thompson, J. S. Mooney, L. W. Young Jr.
Movements Around Transit Tunnels In Mixed Ground, L. Edgers, D. E. Thompson, J. S. Mooney, L. W. Young Jr.
International Conference on Case Histories in Geotechnical Engineering
This paper describes the ground movements measured at a Test Section during construction of twin rapid transit tunnels in Cambridge, Massachusetts. The Test Section was located in an area of rock, soft ground and mixed face tunneling, with the alignment of the twin tunnels approximately 100 feet below ground surface. Overburden soils consist primarily of a very dense, saturated glacial till containing cobbles and boulders, with a weakly metamorphosed, fractured shale bedrock below. Instrumentation at the Test Section was installed in three cross-sections: one with the tunnel headings entirely in rock, a second with the tunnel headings in soft ground, …