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Articles 91 - 120 of 351
Full-Text Articles in Geotechnical Engineering
Past Proceedings: 4th International Conference On Recent Advances In Geotechnical Earthquake Engineering & Soil Dynamics (2001), Multiple Authors
Past Proceedings: 4th International Conference On Recent Advances In Geotechnical Earthquake Engineering & Soil Dynamics (2001), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Fifth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
Fifth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
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 - Papers, Multiple Authors
Table Of Contents - Papers, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Keynote Address: Case Histories In Early Soil Mechanics, Ralph B. Peck
Keynote Address: Case Histories In Early Soil Mechanics, Ralph B. Peck
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Success And Failure In Predicting Pile Performance, Harry G. Poulos
Success And Failure In Predicting Pile Performance, Harry G. Poulos
International Conference on Case Histories in Geotechnical Engineering
This paper reviews the anatomy of predictions for pile and pile group performance, and discusses the various facets of the prediction process. A series of case histories is presented in which successful predictions were made of the pile performance. Most of these cases involve a single pile or a small group of piles. A further series of case histories is then discussed in which the predictions were far less successful. Most of these cases involve larger pile groups. The reasons for the success or otherwise of the predictions are discussed, and it is concluded that successful predictions require a combination …
The World Trade Center “Bathtub”, A Case History, George J. Tamaro
The World Trade Center “Bathtub”, A Case History, George J. Tamaro
International Conference on Case Histories in Geotechnical Engineering
In 1967 the Port Authority of New York and New Jersey (PANYNJ) undertook the construction of the World Trade Center (WTC) diaphragm (slurry) walls, installation of the lateral support system and the excavation of the site, commonly referred to as the “Bathtub”. The work took two years to complete. In 2001 the City of New York undertook the re-excavation of the site after the terrorist attacks. The recovery work took eight months to complete. When the World Trade Center Recovery Effort officially concluded on May 30, 2002, reconstruction was already underway. The Port Authority of New York and New Jersey …
Disclaimer, Shamsher Prakash
Disclaimer, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Preface, Shamsher Prakash
Preface, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Financial Co-Sponsors, Multiple Members
Financial Co-Sponsors, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
An Evaluation Of The Load-Displacement Behavior And Load Test Interpretation Of Micropiles In Rock, Andrew G. Cushing, Scott A. Stonecheck, Bradley D. Campbell, Scott D. Dodds
An Evaluation Of The Load-Displacement Behavior And Load Test Interpretation Of Micropiles In Rock, Andrew G. Cushing, Scott A. Stonecheck, Bradley D. Campbell, Scott D. Dodds
International Conference on Case Histories in Geotechnical Engineering
This paper summarizes a series of never-before reported axial compression load tests conducted on single micropiles that are embedded in or constructed on rock. These data are augmented by load tests on similar micropiles that have been reported by others. The observed displacements at the maximum test load (QMAX) and reported unfactored design load (QDL) are summarized. In addition, the small-strain load-displacement behavior of these foundations is evaluated by comparing the initial tangent slope (IS) to the theoretical elastic slope (ES), which is calculated by modeling the micropile as a free-standing column exhibiting fully -composite behavior. The data demonstrate that …
Stabilization Of A Historic Structure Founded On An Unstable Mesa, James W. Niehoff
Stabilization Of A Historic Structure Founded On An Unstable Mesa, James W. Niehoff
International Conference on Case Histories in Geotechnical Engineering
In the mid-1920s, a 26-room mansion fashioned after a 16th Century Scottish castle, was built south of Denver, Colorado atop a large mesa. Although significant portions of the mesa were capped with a hard, relatively intact conglomerate rock formation, the outer edges were either missing or fractured into blocks and underlain by weaker claystone. Since its construction, portions of the conglomerate capstone have shifted, causing settlement and lateral movement of the outer parts of the residence. As part of recent renovation work, a comprehensive evaluation of foundation conditions was conducted to evaluate the cause of past structural movements and to …
Design Lessons From Load Tests On Open- And Closed-Ended Pipe Piles, Kyuho Paik, Rodrigo Salgado, Junhwan Lee
Design Lessons From Load Tests On Open- And Closed-Ended Pipe Piles, Kyuho Paik, Rodrigo Salgado, Junhwan Lee
International Conference on Case Histories in Geotechnical Engineering
Both the driving response and static bearing capacity of open-ended piles are affected by the soil plug that forms inside the pile during pile driving. In order to investigate the effect of the soil plug on the load capacity of pipe piles in general, field pile load tests were performed on instrumented open- and closed-ended piles driven into sand. For the open-ended pile, the soil plug length was continuously measured during pile driving, allowing calculation of an incremental filling ratio, IFR for the pile. The cumulative hammer blow count for the openended pile with final IFR of 77.5% was 16% …
Instrumentation And Performance Of Tied-Back Shotcrete Shoring In Sand Adjacent To A Hospital Structure, Carol Domitric, Matthew Janes
Instrumentation And Performance Of Tied-Back Shotcrete Shoring In Sand Adjacent To A Hospital Structure, Carol Domitric, Matthew Janes
International Conference on Case Histories in Geotechnical Engineering
Recent additions to the Brantford General Hospital expansion included construction of a new hospital wing, involving excavations of up to 11 metres (36 feet) depth, in loose to compact sand adjacent to an existing eight-storey hospital structure. The tendered contract called for interlocking caisson walls. An alternative method of temporary excavation support, tied-back shotcrete shoring, was proposed by HC Matcon Ltd. Due to a lack of familiarity with this method in Ontario, the uncertainty of attaining near-zero movements, and the proximity of adjacent ‘lifeline’ structures, the design-build team of HC Matcon and Isherwood Associates implemented a comprehensive program of quality …
Grouting And Dewatering In Balancing Settlement Of A Building, Jinyuan Liu
Grouting And Dewatering In Balancing Settlement Of A Building, Jinyuan Liu
International Conference on Case Histories in Geotechnical Engineering
A case study using grouting and dewatering system to protect a residential building during an adjacent deep excavation is presented in this paper. The building was a 73-year old masonry structure with two additional stories added to its original designed four stories height. The building was located 5 m away from a 15 m deep excavation. The project was located in downtown Shanghai, China. Grouting was injected between excavation and the building to compensate for ground loss and stress relief to reduce the building’s settlement. Dewatering was applied at the far end to increase the settlements and limit the differential …
Skin Friction And Pile Design, Akira Wada
Skin Friction And Pile Design, Akira Wada
International Conference on Case Histories in Geotechnical Engineering
The skin friction of pile is found as a parameter of pile shaft displacement. It will not be a simple/constant values for each type of soil/weathered rock. Pile load test data shows skin friction grows to maximum strength at certain displacement and then reduces to residual strength. Due to this property, the main active skin friction zone is shifted downwards with the increase of load. From the shared ratio of total skin friction in pile bearing capacity, the share ratio of skin friction is found related with pile length. This means that for 30m long pile, the skin friction share …
Short Course On Solid Dynamics In Engineering Practice, Multiple Authors
Short Course On Solid Dynamics In Engineering Practice, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Organizing Committee, Multiple Members
Organizing Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Micropiles For Support Of Heavy Crane Ring Foundation, José L. M. Clemente, John R. Davie, Peter Nufer, Myron Anderson
Micropiles For Support Of Heavy Crane Ring Foundation, José L. M. Clemente, John R. Davie, Peter Nufer, Myron Anderson
International Conference on Case Histories in Geotechnical Engineering
The replacement of a steam generator at a nuclear power plant was accomplished with the use of a massive crane, believed to be one of the largest available cranes in the world market. Four steam generators were replaced, with each generator weighing 3.2 MN. The crane used for the job had a circular support that required a ring foundation. The crane support imposed huge loads on the ring foundation. Because of the presence of soft to medium stiff clayey fill on one side of the ring foundation, the load-sensitive nature of existing underground safetyrelated duct banks, and the nature of …
Design Of Axially Loaded Bored Single Piles In The Czech Republic, Jan Masopust
Design Of Axially Loaded Bored Single Piles In The Czech Republic, Jan Masopust
International Conference on Case Histories in Geotechnical Engineering
The paper deals with the design method of axially loaded bored single piles based on statistical analysis of more than 350 field static load tests (MLT) of bored piles made in Czech Republic and partially in Germany during the past 30 years. The limit state of serviceability is characterized by the construction of load-settlement curve. The first draft of this method was based on the theory of elasticity and on quasi-elastic relations between soil and pile and it was modified by means of back analyses of pile static load test results. Recently, the construction of the load-settlement curve is based …
Horizontal Loading Tests Of Instrumented Tubular Piles Driven Into Clay — A Case History, Ali Bouafia, Amina Lachenani
Horizontal Loading Tests Of Instrumented Tubular Piles Driven Into Clay — A Case History, Ali Bouafia, Amina Lachenani
International Conference on Case Histories in Geotechnical Engineering
Within the scope of an important experimental program of research on piles behaviour, the LCPC (Laboratoire Central des Ponts & Chaussées, France) carried out static lateral loads on two 915 mm diameter steel tubular piles in order to analyze the load-transfer P-Y curves. Each pile was driven up to 5 m deep into a brown clayey layer of thickness 6.50 m overlying a blue stiff marl. The instrumentation of each pile comprised 12 pairs of strain gauges for the measurement of bending moments along the pile and LVDTs for pile deflections. Process of double differentiation and double integration led to …
New Exhibition Hall 3 In Frankfurt – Case History Of A Combined Pile-Raft Foundation Subjected To Horizontal Load, Rolf Katzenbach, Jens Turek
New Exhibition Hall 3 In Frankfurt – Case History Of A Combined Pile-Raft Foundation Subjected To Horizontal Load, Rolf Katzenbach, Jens Turek
International Conference on Case Histories in Geotechnical Engineering
Concerning the load bearing behaviour of vertical loaded Combined Pile-Raft Foundations (CPRFs) many studies and publications are available whereas for CPRFs subjected to horizontal or inclined loads scientific results or case histories are very rare. But also for horizontal loading it is possible to obtain a very economic foundation design and to reduce the movements by using a CPRF. Following a theoretical illustration of the load bearing behaviour of a CPRF subjected to horizontal loads the paper is focused on the new exhibition hall 3 in Frankfurt am Main. With a length of 210 m, a width of 130 m …
High-Rise Buildings In Germany Soil-Structure Interaction Of Deep Foundations, Rolf Katzenbach, Alexander Schmitt
High-Rise Buildings In Germany Soil-Structure Interaction Of Deep Foundations, Rolf Katzenbach, Alexander Schmitt
International Conference on Case Histories in Geotechnical Engineering
When considering foundations for high-rise buildings in urban areas a major task is the reduction of settlements and differential settlements of new structures and adjacent buildings to ensure their safety and serviceability. In many cases the soil conditions can lead to deep foundations in order to transfer the high loads of the buildings into deep soil strata with higher bearing capacities. Compared to traditional pile foundations where building loads are assumed to be transferred to the soil only by piles, the Combined Pile-Raft Foundation (CPRF) consists of the three bearing elements piles, raft and subsoil. The load share between piles …
Interaction With Nearly Environment And Old Structure For A Deep Excavation. Case History In Bucharest, A. Chirica, A. Olteanu, M. S. Serbulea, C. Enescu, N. Ungureanu
Interaction With Nearly Environment And Old Structure For A Deep Excavation. Case History In Bucharest, A. Chirica, A. Olteanu, M. S. Serbulea, C. Enescu, N. Ungureanu
International Conference on Case Histories in Geotechnical Engineering
The paper presents the influence of a deep excavation performed in Bucharest on the adjacent ground and on some old buildings around it; the damages and effects appeared during the excavation and the remedial measures are presented in detail, too. The excavation was designed to be 16.15 meters deep, sustained by a slurry wall enclosure of 60 cm thickness and pre-stressed anchors, and steel struts. Due to an accident that occured to the trench walls, a thorough monitoring by instrumentation started. The results of this monitoring are shown.
Skin Friction Resistance Of Auger Cast-In-Place Piles In Texas Gulf Coast Soils, Pramod M. Rao, K. Mohan Vennalaganti, Shailendra N. Endley, Karun Sreerama
Skin Friction Resistance Of Auger Cast-In-Place Piles In Texas Gulf Coast Soils, Pramod M. Rao, K. Mohan Vennalaganti, Shailendra N. Endley, Karun Sreerama
International Conference on Case Histories in Geotechnical Engineering
Auger Cast In Place (ACIP) Piles have been used increasingly for various types of projects including industrial and commercial buildings, multi-story parking garages, docks and other structures. The performance of auger cast in place piles is dependent on several factors including the soil type, rate of auger extraction and pumping of grout, grout strength, grout pressures and grout ratio. Performance of piles can be judged by pile load tests performed on test piles constructed under similar conditions. This paper presents case studies involving eight pile load tests performed on auger cast piles installed at four different sites in Texas Gulf …
Foundations Over Salt-Encrusted Flats (Sabkha): Profiles, Properties, And Design Guidelines, Waddah Akili
Foundations Over Salt-Encrusted Flats (Sabkha): Profiles, Properties, And Design Guidelines, Waddah Akili
International Conference on Case Histories in Geotechnical Engineering
The evaporative and sedimentary environment that has prevailed over the southern shores of the Arabian Gulf region (eastern Saudi Arabia, Qatar, and United Arab Emirates) has produced salt-encrusted flat areas known in Arabic as “sabkha”. Building activities on sabkha areas have posed problems and challenges to the construction industry triggered primarily by the excessive salts present in both the sediments and their shallow ground waters. The paper sheds light on the general setting of sabkha, including: its development, its geology, its hydrogeology and the make up of its sediments. In general, sabkha sediments are cemented and uncemented layers of sand …
Single Foundations Of Framed Buildings And Skeleton Structures In A Compacted Base And Their Horizontal Load Resistance, A. L. Gotman, Yu. M. Shemenkov
Single Foundations Of Framed Buildings And Skeleton Structures In A Compacted Base And Their Horizontal Load Resistance, A. L. Gotman, Yu. M. Shemenkov
International Conference on Case Histories in Geotechnical Engineering
In practice of construction in Russia in case of plastic soils bedding, the cast-in-place foundations are used, constructed in a compacted base in kind of tamping in the soil of the 2-4 m depth pyramidal holes with the subsequent ballast tamping into the hole bottom and placing concrete in the said hole. Such foundations are advisable under the columns of framed buildings and structures. They are significantly more effective comparing to the pile foundations with a cast-in-place raft, as without a raft the volume of excavation works and formwork decreases significantly. While design of such foundations for the framed buildings …
Consideration Of Raft And Soil Interaction In Piled-Rafts Design, N. Z. Gotman, M. I. Makarjev
Consideration Of Raft And Soil Interaction In Piled-Rafts Design, N. Z. Gotman, M. I. Makarjev
International Conference on Case Histories in Geotechnical Engineering
Based on the analysis of the piled-raft foundations, as well as experimental investigations of the geotechnical engineers, it is stated that the load of a piled-raft foundation is transferred both to a raft and a pile. When a piled-raft foundation design, the account of this factor allows the significant decrease of the foundation cost. To work out the method of a piled-raft foundation design, the experimental and numerical investigations have been carried out.The paper gives some results of the experimental and numerical investigations of piled-raft foundations. A method of the evaluation of a load part transferred to a raft and …
Design And Construction Of Large Diameter Impact Driven Pipe Pile Foundations New East Span San Francisco-Oakland Bay Bridge, S. Mohan, V. K. Khotan, R. F. Stevens, M. J. Chacko, M. Kapuskar
Design And Construction Of Large Diameter Impact Driven Pipe Pile Foundations New East Span San Francisco-Oakland Bay Bridge, S. Mohan, V. K. Khotan, R. F. Stevens, M. J. Chacko, M. Kapuskar
International Conference on Case Histories in Geotechnical Engineering
The San Francisco-Oakland Bay Bridge is one of the most heavily traveled bridges in the world. The east span of the bridge will be replaced due to seismic safety concerns. The new bridge will be founded mostly on large 1.8 to 2.5-meter diameter, approximately 60- to 100-meter long pile foundations. American Petroleum Institute (API) method was used for pile design, since the selected foundation type is similar to those used for offshore oil platforms and the subsurface conditions are in many ways similar to those in the Gulf of Mexico. Piles foundations will experience tension loads of up to approximately …
Moorhouse Development – London Deep Sleeved Base-Grouted Piles And Perimeter Retaining Walls, John Coupland, Mouwafak Kassir
Moorhouse Development – London Deep Sleeved Base-Grouted Piles And Perimeter Retaining Walls, John Coupland, Mouwafak Kassir
International Conference on Case Histories in Geotechnical Engineering
The construction of the deepest base grouted piles in London was a challenge in itself, but to do this in a city center site measuring 85m by 53m in plan and 3.5m below street level was a true achievement. The piled foundations had been designed to isolate the building from future ground movements associated with construction of the CrossRail underground rail tunnels linking east and west London, which would run below the building. To achieve the required isolation, the design of the foundations called for the provision of frictionless pile sleeves to depths of 26m (85ft), and base grouting of …