Analysis Of Piled-Raft Foundation For Cai Mep Container Port, Vietnam,
2013
Thu Dau Mot University, Binh Duong, Vietnam
Analysis Of Piled-Raft Foundation For Cai Mep Container Port, Vietnam, Nguyen Minh Hai, Bengt H. Fellenius
International Conference on Case Histories in Geotechnical Engineering
During the last decade, a series of ports are being built along the Thi Vai River in the Mekong delta approximately 80 km southeast of Ho Chi Minh City, Vietnam. The ports are built on reclaimed ground over an about 30 to 40 m thick deposit of soft, normally consolidated, compressible clay deposited on dense to compact sand The deep foundation system typically used for buildings in this region consists of pretensioned spun high strength concrete piles driven to significant toe bearing in dense soils. Because of the anticipated significant costs of this solution, a more economical alternative foundation system …
Differential Settlement Of Foundations On Loess,
2013
University of Novi Sad, Serbia
Differential Settlement Of Foundations On Loess, Dušan Milović, Mitar Djogo
International Conference on Case Histories in Geotechnical Engineering
Experience gained during several decades shows that the loess soil in some cases undergoes structural collapse and subsidence due to inundation and that in some other cases the sensitivity of loess to the collapse is considerably less pronounced. In this paper the behaviour of three 12 story buildings A, B and C, of the same static system and the identical shapes have been analyzed. The measurement of settlements of building A over a period of 10 years indicate that the values were situated between the limits 9 cm to 13 cm, and that they are larger than the calculated values, …
Differential Settlement Problem Of A Large Apartment Building In Bogotá, Cause And Solution,
2013
LFO Ingenieros de Suelos, Colombia
Differential Settlement Problem Of A Large Apartment Building In Bogotá, Cause And Solution, Marcela Q. Salcedo, Luis Fernando R. Orozco
International Conference on Case Histories in Geotechnical Engineering
Foundation analysis for any structure is based primarily on the results of the soil exploration and testing, but there are other sources of information which must be studied carefully and thoroughly, depending on the zone where the project is to be located. This paper deals with a condominium of three large apartments buildings which were constructed at a site on the foothill of the eastern mountains of the city of Bogotá. The soil borings showed the existence of a uniform gravel stratum at a depth of 29 m., but the truth was different and its analysis more complex than was …
Dynamic Response Of Vertical And Batter Piles,
2013
Indian Institute of Technology Madras, India
Dynamic Response Of Vertical And Batter Piles, R. M. Subramanian, A. Boominathan
International Conference on Case Histories in Geotechnical Engineering
The lateral forced vibration test was carried out on driven cast in-situ concrete vertical piles of 500 mm diameter in a petrochemical complex site in Paradip, India. The site predominantly consists of silty sand for the top 3 m with shear wave velocity of 200 m/s and it is followed by clayey sand with shear velocity increases from 415 m/s to 460 m/s over pile termination depth of about 17 m . The piles were subjected to a sinusoidal lateral force with magnitude of 0.3 kN to 9.5 kN in the frequency range of 5 to 30 Hz. A 3D …
Full-Scale Load Testing Of 57-Year Old Raymond Piles For Foundation Re-Use,
2013
GAEA Engineering Ltd., Canada
Full-Scale Load Testing Of 57-Year Old Raymond Piles For Foundation Re-Use, Vishnu Diyaljee
International Conference on Case Histories in Geotechnical Engineering
The proposed reconstruction of a demolished coke battery superstructure of a steel mill to a level higher than originally constructed in 1952 required the evaluation of the geotechnical resistance and settlement characteristics of its existing foundation piles. Except for design drawings showing the layout of the substructure elements and the borehole logs, there were neither as-built drawings nor any records available about the design and construction of the piles. A total of nine (9) axial compressive load tests were initially undertaken. Two (2) 19 ft long piles were initially tested under the pusher tracks, and a further seven (7) piles …
Ground Heave Due To Jet Grouting Near An Existing Structure,
2013
CONICET – Universidad Nacional de Córdoba, Argentina
Ground Heave Due To Jet Grouting Near An Existing Structure, Federico Pinto, Gary M. O’Neil, Amy D. Apfelbaum, Andrew J. Whittle
International Conference on Case Histories in Geotechnical Engineering
Renovations of the MBTA Copley Station in Boston included construction of a new elevator shaft to improve disabled access to the existing Green Line station. The site is immediately adjacent to the Eastern façade of the historic Old South Church. The construction work required excavation support including a perimeter secant pile wall and a jet-grouted base plug. Significant ground and structural movements were observed during jet grouting, mainly associated with soil displacements during grout injection. A three dimensional numerical model was developed, using the Plaxis 3D Foundation™ program, in order to test the hypothesis that the observed movements of the …
High Capacity Rock Socketed Piles In Scotland, Uk,
2013
AECOM Ltd., United Kingdom
High Capacity Rock Socketed Piles In Scotland, Uk, Peter Boyd, Baran Ozsoy
International Conference on Case Histories in Geotechnical Engineering
The New Victoria Hospital in Glasgow, Scotland provides a 30,000m² ‘Ambulatory Care and Diagnostic’ (ACAD) facility. The ground conditions beneath the site comprise a variable thickness of Made Ground overlying Glaciomarine Deposits and Glacial Till which in turn rests on the Carboniferous bedrock. However the solid geology is complex and interrupted by a number of faults. The Carboniferous rocks under the site include a number of coal seams, although it is thought that none of these seams has been worked at this location. Due to the relatively low strength of the glacial soils, it was necessary to support the building …
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River,
2013
Enoch George Associates Ltd., Nigeria
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River, E. A. J. George, T. J. Atuboyedia, M. Oju, T. E. George
International Conference on Case Histories in Geotechnical Engineering
The deltaic plains of the Niger River are composed mostly of Pleistocene sediments. On the occurrence of low stands of the sea level due to eustatic changes, the sediments were exposed to temperature fluctuations during the Quaternary period, leading to strata sequence generated in these plains that allowed strong layers of soil to overlie weaker layers of the same age. Most of the onshore explorations for oil and gas in Nigeria take place within these plains of the Niger. A well was to be drilled in search of oil and gas in allocation within these plains. As often done, a …
The Effect Of Quality Of Subsoil Structure Identification On The Execution Of Pile Structures For Bridge Supports,
2013
University of Technology and Life Sciences, Poland
The Effect Of Quality Of Subsoil Structure Identification On The Execution Of Pile Structures For Bridge Supports, Maciej Kumor, Zbigniew Młynarek
International Conference on Case Histories in Geotechnical Engineering
Supports of road viaducts or bridges are founded predominantly on piles. This is determined by the subsoil structure and the location of the designed object. In certain cases the selection of the pile system is also influenced by the neighboring buildings and infrastructure. The design for bridge foundation in such cases needs to be based on high quality geotechnical documentation. Although this criterion is specified in Eurocode 7: PN-EN 1997 parts 1 and 2, binding throughout Europe, including Poland, frequently geotechnical documentations are not very precise and do not present an accurate subsoil structure, leading to building disasters. Such a …
A Case History Of A Deep Foundation Pit Constructed By Zoned Excavation Method In Shanghai Soft Deposit,
2013
East China Architectural Design & Research Institute, Co., Ltd., China
A Case History Of A Deep Foundation Pit Constructed By Zoned Excavation Method In Shanghai Soft Deposit, Z. H. Xu, J. Zhang, C. Chen
International Conference on Case Histories in Geotechnical Engineering
This paper presents a case history of a deep excavation for building foundation in Shanghai soft deposit. The excavated area was about 15916 m2. The excavation depth at the tower part was 15.0 m and at the podium part was 14.5 m to 15.2 m. Around the excavated pit, there existed many facilities including roads, the shield tunnels of the No.7 Metro, buildings, and pipelines. Zoned excavation method was adopted in this project. The excavation was divided into a relatively small pit (Zone I) and a big pit (Zone II). The small pit was just adjacent to the …
A Case History Of Deep Excavation In Doha,
2013
Hyder Consulting Limited, Hong Kong, China
A Case History Of Deep Excavation In Doha, L. Tony Chen
International Conference on Case Histories in Geotechnical Engineering
The Doha high-rise tower consists of a 4 level basement which required an excavation depth of 16m along the site perimeter. Minimization of impact of excavation-induced ground movements on the adjacent structures and underground utilities was one of the major considerations in the design and construction of the excavation and its temporary retaining system. The temporary retaining system initially consisted of anchored secant pile walls with toe grouting along the entire site perimeter. After excessive movement was detected on one section of the southern wall, inclined steel bracing was installed inside the excavation as a remedial measure to provide additional …
Application Of Jacket Pack Anchor (Jp Anchor),
2013
Shinhwa Soil Tech. Co., Ltd., South Korea
Application Of Jacket Pack Anchor (Jp Anchor), Kim Tae-Seob, Cho Yoon-Ju
International Conference on Case Histories in Geotechnical Engineering
Jacket Pack Anchor(JP Anchor) is applied the irregular layer that general ground anchor is difficult to be applied such as soft layer(SPT-N values of less than 20) or gravel layer that grout lost. It makes sure of the pullout resistance required in these layers by the certain grout bulb formation and expansion effect. Thereby, Jacket Pack Anchor that is a new concept makes possible the construction improving and the cost saving in the excavation site. From the field test results, it was observed that the pullout resistance of Jacket Pack Anchor was about 84% greater than that of general ground …
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia,
2013
University of Brescia, Italy
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia, Alex Sanzeni, Francesco Colleselli, Moira Mino, Alberto Merlini
International Conference on Case Histories in Geotechnical Engineering
The construction of a new underground car park in the historic center of Brescia (Northern Italy) required the execution of a 130m long, 23m wide and 15-20m deep excavation which was supported by concrete multi-anchored diaphragm walls. The site is located between two facing ancient walls (15-16th century) that support 3-4 storey buildings in precarious conditions. The soil stratigraphy comprises a superficial layer of made ground over a clayey to sandy soil deposit supporting a perched water table. A comprehensive monitoring system was set up before construction that included inclinometers, precise leveling and automatic structural monitoring by means of a …
Case Studies Of Dewatering And Foundation Design: Retail Warehouses In Taiwan,
2013
Hart Crowser, Inc., Seattle, WA
Case Studies Of Dewatering And Foundation Design: Retail Warehouses In Taiwan, Barry S. Chen, Roy E. Jensen
International Conference on Case Histories in Geotechnical Engineering
The case studies in this paper describe three retail warehouse sites in Taiwan that have high groundwater tables in common, but that have drastically different soil conditions. Two of the sites are in dense, permeable gravel and cobble and the third site is in interbedded alluvial sand and clay. At the first site, shallow footings and slab-on-grade floors were placed on top of a permanent passive drainage system that required accurate seepage volume estimates in the permeable gravel and cobble. At the second site, the hydraulic conductivity of the gravel and cobble is high and is sensitive to fluctuation of …
Constructive Solutions To The Conservation Of Cultural Heritage,
2013
University of Architecture, Civil Engineering and Geodesy (UACEG), Bulgaria
Constructive Solutions To The Conservation Of Cultural Heritage, Miroslav Todorov
International Conference on Case Histories in Geotechnical Engineering
Bulgaria is a country with rich historical heritage and cultural diversity. The protection and conservation of cultural and historical monuments is vital to preserving the national identity of Bulgarians, the relationship with the land and traditional culture as an essential part of his life and means of survival. It should be noted Bulgarian modest contribution to the preservation of 7 (according to UNESCO) cultural monuments and two nature reserves listed as World Heritage. In the center of the Bulgarian capital - Sofia are located over 1400 cultural and historical monuments that highlight the civilizational and cultural outlook of the capital …
Damage On A Main Gas Pipeline Due To Landslide Of Soils Derived From Volcanic Ashes In Colombia,
2013
C.I.C. Consultores S.A., Colombia
Damage On A Main Gas Pipeline Due To Landslide Of Soils Derived From Volcanic Ashes In Colombia, Gilberto Ch. Rodriguez, Julián V. Rodriguez, Natalia A. Quintero, Jorge E. Villamarín
International Conference on Case Histories in Geotechnical Engineering
In December 2011 a great proportion slope failed affecting the main gas pipeline (20” diameter) that supplies Colombia’s southwest area. The landslide involved materials formed by soils derived from volcanic ashes and residual soils, typical in Colombia’s central zone, which acquired great energy flowing in an avalanche through the natural watercourse. The avalanche generated soil erosion over the torrent banks, generating the watercourse deepening and the deterioration of adjacent slopes over which the pipeline runs. There were identified as landslides triggering aspects the atypical raining period due to “La Niña” climatic phenomenon and the soils removal at the slope base …
Design Details To Accommodate Fault Movement In A Dam Foundation,
2013
MWH, Chicago, IL
Design Details To Accommodate Fault Movement In A Dam Foundation, Peter A. Dickson, Joseph R. Kovacich, Georgios Raptis
International Conference on Case Histories in Geotechnical Engineering
During planning for dam projects, good practice usually calls for appropriate investigations to help assure the development is not located on or immediately adjacent to active faults. There are examples of projects, however, where an active fault has been discovered in or close to a dam foundation and engineering solutions have been incorporated into design to enable satisfactory performance of the dam should fault displacement occur during project operation. In some cases, the existence of such hazards only becomes evident late in the design cycle when the dam site is considered fixed and hazard avoidance is not an easy option. …
Double Case Of Passive Pressure Acting On Wall Rotated About The Top,
2013
Institute of Theoretical and Applied Mechanics, Czech Republic
Double Case Of Passive Pressure Acting On Wall Rotated About The Top, Petr Koudelka
International Conference on Case Histories in Geotechnical Engineering
Basic research of lateral earth pressure based on physical and numerical experiments began in 1998 at the institute of the author and it has continued to the present time. The physical research should prove the behavior of ideally non-cohesive granular mass during three basic types of structure/wall movement towards in active and passive directions. The first research period in 1998-2000 was aimed on active pressure, and in 2001-2002 on the first long-term experiment with passive pressure (E3/0.2). Then new experimental equipment was developed between 2003 and 2009 on a contemporary advanced level. The first long-term experiment with passive pressure E3/0,2 …
Earth Dam Failure By Erosion, A Case History,
2013
Bechtel Power Corporation, Frederick, MD
Earth Dam Failure By Erosion, A Case History, Scott Newhouse
International Conference on Case Histories in Geotechnical Engineering
In January 1998, the Archusa Creek Dam in southeast Mississippi failed by breaching through its emergency spillway. At the time of its failure, the dam had a concrete ogee weir for a principal spillway and a vegetated earth emergency spillway. Fortunately, the dam is a low hazard structure, as there is little development downstream, and consequences of failure were mostly limited to the loss of a state-owned, recreational water park. The dam failed as a result of a 5-year storm event, triggered by intense rainfall of nearly 4.25 in. in just a few hours. Runoff generated by the storm caused …
Failures Of Retaining Wall Structures Due To Earthquake,
2013
University of Science and Culture, Iran
Failures Of Retaining Wall Structures Due To Earthquake, Mohammadreza Abbasi Garavand, Hamzehlou Bahareh
International Conference on Case Histories in Geotechnical Engineering
This paper describes crack pattern of reinforcement concrete retaining structure due to earthquake. For this reason, the 3-D finite element dynamic analysis of retaining wall structures with consideration of the soil-structure interaction has been used. Purpose of this study is to detect damage zone, due to earthquake in such structures. The analysis data is based on 1995 Kobe and 1994 Northridge earthquake reports, and the results have been verified with some retaining walls were damaged in those earthquakes. To take into account the non-linearity of soil-structure surface, surface to surface contact element is used. One of the most important problems …
