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Articles 7501 - 7530 of 13031

Full-Text Articles in Engineering

Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations, M. Bayat, Lars Vabbersgaard Andersen, Lars Bo Ibsen Apr 2013

Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations, M. Bayat, Lars Vabbersgaard Andersen, Lars Bo Ibsen

International Conference on Case Histories in Geotechnical Engineering

The offshore wind energy industry is turning out ever larger numbers of offshore wind turbines every year. One way to achieve a cost-effective design is to have a better understanding of the dynamic response of offshore structures. That is why it is getting more and more important to understand the dynamic behavior of soil and interaction between soil and piles. To avert damage to offshore foundation, it becomes necessary to identify and quantify the soil-structure interaction and the related damping effects on the system. In this study, a single pile is investigated by means of boundary integral equations. The pile …

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Design And Performance Of Shallow Foundations Over Diagenetic Limestone Along The Arab Gulf Coast: Realities And Challenges, Waddah Akili Apr 2013

Design And Performance Of Shallow Foundations Over Diagenetic Limestone Along The Arab Gulf Coast: Realities And Challenges, Waddah Akili

International Conference on Case Histories in Geotechnical Engineering

The near surface, highly weathered limestones of the southern shores of the Arab Gulf region have complex lithologies attributable to post depositional changes that have altered hard rocks into soils and some carbonate soils into a rock matrix. The matrix, often clayey, sometimes cemented (with gypsum, anhydrite, and /or calcite grains) is not a rock nor could be considered as a soil per se. These deposits are: difficult to sample in the undisturbed state, extremely variable in composition and properties, and are susceptible to degradation, particularly when wet. The paper presents typical geotechnical information from selected sites where these deposits …

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Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia, Bahar Ramdane, Sadaoui Omar, Amzal Djahid Apr 2013

Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia, Bahar Ramdane, Sadaoui Omar, Amzal Djahid

International Conference on Case Histories in Geotechnical Engineering

The marine terminal of Bejaia is a zone of storage of hydrocarbon liquids. It consists of sixteen cylindrical floating roof steel tanks founded on a reconstituted and compacted granular fill. At the end of 1980s, after about 25 years of satisfactory service, the tanks were subjected to settlements, ovalization and tilting. Because of a distortion of the steel tank walls and jamming of the floating roof, a shear failure was evident and some tanks were considered unsafe for service. A comprehensive geotechnical investigation was conducted to evaluate the subsurface conditions of the site and to provide recommendations for foundation repair …

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Dynamic Response Of Vertical And Batter Piles, R. M. Subramanian, A. Boominathan Apr 2013

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 …

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Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark, Sarah Firouzianbandpey, Benjaminn Nordahl Nielsenl, Lars Vabbersgaard Andersen, Lars Bo Ibsen Apr 2013

Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark, Sarah Firouzianbandpey, Benjaminn Nordahl Nielsenl, Lars Vabbersgaard Andersen, Lars Bo Ibsen

International Conference on Case Histories in Geotechnical Engineering

These days cone penetration tests (CPT) have gained more popularity as an alternative to the conventional laboratory tests for subsurface investigation and estimation of soil parameters. Due to increasing interest in soil dynamics in the last decades, there is a development of CPT as a seismic piezocone penetration test (SCPTU) which provides shear wave velocity measurements simultaneously with measurements of tip resistance (qc), sleeve friction (fs) and pore pressure (u). The results can be used for determination of deformation parameters of soil. In this regard there have been proposed different empirical correlations between cone data and …

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Ground Heave Due To Jet Grouting Near An Existing Structure, Federico Pinto, Gary M. O’Neil, Amy D. Apfelbaum, Andrew J. Whittle Apr 2013

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 …

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High Capacity Rock Socketed Piles In Scotland, Uk, Peter Boyd, Baran Ozsoy Apr 2013

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 …

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Performance Of Driven Piles In Gravelly Sands With Cobbles, William S. Man, Yonah R. Halpern Apr 2013

Performance Of Driven Piles In Gravelly Sands With Cobbles, William S. Man, Yonah R. Halpern

International Conference on Case Histories in Geotechnical Engineering

Steel piles are known for their high resistance to driving and handling, as well as their large lateral stiffness. Difficulty of driving depends on the subsurface conditions, pile type, and type of impact hammer used to drive piles. This case history presents observations of pile construction for a bridge widening retrofit in the city of Irwindale. The proposed foundations consisted of twenty seven 14-inch-diameter Caltrans Standard Plan B2-5 Alternative V closed-end pipe piles with quarter-inch thick steel sections. Piles were 35 feet in length and were designed to be driven piles. Subsurface investigations indicated the soils consisted of silty gravels …

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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 Apr 2013

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 …

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Rotary Driven Pipe Piles For A 14-Story Building In New York City, Howard A. Perko, Michael Paquette, Marc Gallagher, Andrew Burns Apr 2013

Rotary Driven Pipe Piles For A 14-Story Building In New York City, Howard A. Perko, Michael Paquette, Marc Gallagher, Andrew Burns

International Conference on Case Histories in Geotechnical Engineering

Rotary driven pipe piles are a unique solution for foundation construction in constrained urban areas. These piles consist of a closedend, steel casing with sacrificial drill tip. The casing and drill tip are rotated into the ground using a fixed-mast drill rig. Three hundred sixty two 12.75-inch diameter, rotary driven pipe piles were installed to support a 14-story building in the upper east side of Manhattan. The soils consisted of uncontrolled fill, organic silts, and peat over stiff, saturated, varved silts and clays. A novel mathematical relationship between capacity, installation crowd, and torque was used to develop initial pile installation …

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Seismic Retrofit Of 92/280 I/C Foundations By Micropile Groups In San Francisco Bay Area, California, Mahmood Momenzadeh, Tung Nguyen, Phil Lutz, Tim Pokrywka, Chris Risen Apr 2013

Seismic Retrofit Of 92/280 I/C Foundations By Micropile Groups In San Francisco Bay Area, California, Mahmood Momenzadeh, Tung Nguyen, Phil Lutz, Tim Pokrywka, Chris Risen

International Conference on Case Histories in Geotechnical Engineering

The Route 92/280 interchange (I/C) connectors are the latest major bridge structures to be retrofitted in the San Francisco Bay Area, California, United States. The presence of poor quality rocks and high groundwater due to the proximity of the San Andreas Fault at this site combined with low overhead of the connectors superstructure at some of the existing bents led to the use of micropile foundation system instead of a conventional Cast in Drill Hole (CIDH) pile system. The existing CIDH foundations were retrofitted at 5 bents by micropile group with very heavy column steel reinforcement additions and 11 bent …

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Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace, Sayed Hemeda, Mohamed Gamal, Kyriazis Pitilakis Apr 2013

Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace, Sayed Hemeda, Mohamed Gamal, Kyriazis Pitilakis

International Conference on Case Histories in Geotechnical Engineering

The modern architectural heritage of Egypt is rich, and extensively variable. It covers all kinds of monumental structures from palaces, public buildings, residential and industrial buildings, to bridges, springs, gardens and any other modern structure, which falls within the definition of a monument and belongs to the Egyptian cultural heritage. We present herein a comprhensive geophysical survey and seismic hazard assesment for the rehabilitation and strengthening of Habib Sakakini’s Palace in Cairo, which is considered one of the most significant architectural heritage sites in Egypt. The palace located on an ancient water pond at the eastern side of Egyptian gulf …

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Soil Movements Due To Displacement Pile Driving, M. K. Chong Apr 2013

Soil Movements Due To Displacement Pile Driving, M. K. Chong

International Conference on Case Histories in Geotechnical Engineering

The effects of displacement piling are well documented with many cases of movements caused to adjacent structures and detrimental effects on recently installed piles. The author’s experience with dealing with ground displacements of raft piling in deep marine clays in Singapore led to the development of a method for calculating the ground movements to assess the cumulative effects of pile driving. The method is derived from soil mechanics parameters, principle of potential energy, strain energy and work done by the stresses in the soil undergoing a cylindrical cavity expansion process and the stresses in the soil undergoing large strains direct …

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The Effect Of Quality Of Subsoil Structure Identification On The Execution Of Pile Structures For Bridge Supports, Maciej Kumor, Zbigniew Młynarek Apr 2013

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 …

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Underpinning Using Micropiles For Fragile Building Adjacent To Deep Excavation In Manhattan, New York, Chu Ho, Adrian Pena-Iguaran Apr 2013

Underpinning Using Micropiles For Fragile Building Adjacent To Deep Excavation In Manhattan, New York, Chu Ho, Adrian Pena-Iguaran

International Conference on Case Histories in Geotechnical Engineering

A deep excavation was to be carried out adjacent to a fragile building in weak ground. An underpinning scheme utilizing 250kips capacity micropiles socketed into the bedrock was designed to provide stability to the building during the excavation. In adopting the micropile system, the interior of the basement had to be retrofitted with a new reinforced concrete structural system of walls, slabs and beams to provide rigid framing for transfer of loads between the existing structural walls and the new micropiles. The micropiles were installed from inside the basement of the adjacent building under low headroom conditions. A preliminary load …

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Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification, Mehdi Khalili Noutash, Masoud Hajialilue Bonab, Mehrad Khalili Noutash Apr 2013

Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification, Mehdi Khalili Noutash, Masoud Hajialilue Bonab, Mehrad Khalili Noutash

International Conference on Case Histories in Geotechnical Engineering

One of the most recognized geotechnical hazard which causes dramatic life lost and serious damages to different structures, are the collapsible soils under the foundation of structures. This problem becomes more critical when water is seeped or induced to the soil structure because collapsible soils are metastable and they have an open structure Khoda Afarin main canal is a major conveyance canal which is located and is under construction in Moghan and Khoda Afarin region pass throw East Azerbaijan and Ardabil provinces in IRAN. Presence of collapsible soils in some portion of this canal bed has brought the necessity of …

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Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia, Alex Sanzeni, Francesco Colleselli, Moira Mino, Alberto Merlini Apr 2013

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 …

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Causes And Circumstances Of Red Mud Reservoir Dam Failure In 2010 At Mal Zrt Factory Site In Ajka, Hungary, David Turi, Jozsef Pusztai, Istvan Nyari Apr 2013

Causes And Circumstances Of Red Mud Reservoir Dam Failure In 2010 At Mal Zrt Factory Site In Ajka, Hungary, David Turi, Jozsef Pusztai, Istvan Nyari

International Conference on Case Histories in Geotechnical Engineering

The red mud reservoir failure in Ajka, Hungary has claimed 10 lives and cost millions of dollars in damages. Immediately after emergency measures investigations started to shed light on causes and circumstances. The authors performed an extensive desktop study of about 20 thousand pages reaching back to the 1970s, when the facility has been designed. Beside this study the dam and its area have gone through series of site investigations, from drilling to CPTu testing and laboratory testing. The information so collected resulted in the following conclusion. Contributing factors to this substantial dam failure included poor siting of the facility, …

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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 Apr 2013

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 …

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Double Case Of Passive Pressure Acting On Wall Rotated About The Top, Petr Koudelka Apr 2013

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 …

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Earth Dam Failure By Erosion, A Case History, Scott Newhouse Apr 2013

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 …

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Evaluation Of The Failure Probability Of Slopes In Residual Soil From The Aburrá Valley, Medellín Colombia, Juan Pablo Villada Rodas, Manuel Roberto Villarraga Apr 2013

Evaluation Of The Failure Probability Of Slopes In Residual Soil From The Aburrá Valley, Medellín Colombia, Juan Pablo Villada Rodas, Manuel Roberto Villarraga

International Conference on Case Histories in Geotechnical Engineering

In recent years the evaluation of failure probability on slope stability analyses has become important because it has been presented as a representative method helping to complement the factor of safety. As part of this paper, it is proposed the evaluation of the failure probability in cut slopes on residual soils from the Aburrá valley. Statistical analyses were performed on the most important variables, considering continuous statistical distributions. Sensitivity analyses were performed to quantify their influence in the stability. As a result, some abacuses are developed in which the height and the slope angle are related to the failure probability …

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Exploration, Deconstruction, And Repair Of A Distressed Mse Retaining Wall In Saint Paul, Minnesota, Joseph G. Bentler Apr 2013

Exploration, Deconstruction, And Repair Of A Distressed Mse Retaining Wall In Saint Paul, Minnesota, Joseph G. Bentler

International Conference on Case Histories in Geotechnical Engineering

A 225-ft long, 11-ft high MSE retaining wall was constructed in fall 2008 around the lowest corner of a parking lot at a community college. The wall provided grade separation between the higher parking lot and the green areas below. No geotechnical exploration was performed for the wall, although one had been performed for building additions elsewhere on campus, and density testing was performed periodically during MSE wall construction. The following spring, pavement had subsided up to a foot near two catch basins located several feet behind the retaining wall facing. Cracks in the pavement opened adjacent to the catch …

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Failure Of Embankment On Soil-Cement Columns For Thi Vai Port, Vietnam, Nguyen Minh Hai, Bengt H. Fellenius Apr 2013

Failure Of Embankment On Soil-Cement Columns For Thi Vai Port, Vietnam, Nguyen Minh Hai, Bengt H. Fellenius

International Conference on Case Histories in Geotechnical Engineering

The Thi Vai Container Port is constructed on reclaimed ground along the Thi Vai River in the Mekong delta approximately 90 km southeast of Ho Chi Minh City, Vietnam. The soil profile consists of an about 15 to 23 m thick deposit of soft, normally consolidated, highly compressible clay deposited on dense to compact sand. A soil improvement scheme was instigated aiming to reduce long-term settlement after construction of the facilities and improve the stability of the river bank. The scheme combined wick drains and, along the river bank, soil cement columns and toe revetments. The wick drains were installed …

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Failures Of Retaining Wall Structures Due To Earthquake, Mohammadreza Abbasi Garavand, Hamzehlou Bahareh Apr 2013

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 …

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Geotechnical Issues In Structural Stabilization Of Historical Monument — Clock Tower, Vlatko Sesov, Julijana Cvetanovska, Kemal Edip Apr 2013

Geotechnical Issues In Structural Stabilization Of Historical Monument — Clock Tower, Vlatko Sesov, Julijana Cvetanovska, Kemal Edip

International Conference on Case Histories in Geotechnical Engineering

Being located in the central Balkan region, the territory of the Republic of Macedonia has a significant historical heritage. The clock tower in city of Prilep, central Macedonia, dates back to the 19th century. With its total height of almost 30 m, it is one of the most remarkable monuments. During its serviceability period, the clock tower has suffered some moderate inclination. The presented study has been focused on geotechnical issues as part of a structural consolidation project for this important historical structure. In the last decade, in the period between 1998 – 2009, an inclination of 39mm was observed …

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Landslide At Railway Project Site In Weak Murree Formation — Case Study, Kamal Dev Ralh, Ansh Deep Ralh Apr 2013

Landslide At Railway Project Site In Weak Murree Formation — Case Study, Kamal Dev Ralh, Ansh Deep Ralh

International Conference on Case Histories in Geotechnical Engineering

Konkan Railway Corporation Ltd. (KRCL) is constructing 71 km Railway Line from Katra to Dharam in Jammu & Kashmir state of India for Indian Railways. This line when constructed up to Quazigund will link the remote areas of Kashmir valley with main network of Indian Railways. This rail link is required for socio-economic development of remote areas. Three executing agencies are handling the entire project. The KRCL stretch is situated in high mountains and deep gorges requiring construction of large number of tunnels and major bridges. Strata along the alignment is fragile and charged with water particularly in tunnels passing …

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Landslide Of Tunnel Face By Slip Circle Formation —Case Study, Kamal Dev Ralh, Ansh Deep Ralh Apr 2013

Landslide Of Tunnel Face By Slip Circle Formation —Case Study, Kamal Dev Ralh, Ansh Deep Ralh

International Conference on Case Histories in Geotechnical Engineering

Konkan Railway Corporation Ltd. (KRCL) has been assigned construction of 71 km Railway Line from Katra to Dharam in Jammu & Kashmir state of India. This line when constructed up to Quazigund will link the Kashmir valley with main Indian Railways network. Indian Railway Construction Co. (IRCON) is assigned the section from Dharam to Quazigund. Railway Line in the valley beyond Quazigund is in operation. The KRCL stretch is situated in high mountains and deep gorges requiring construction of large number of tunnels and major bridges. The strata in most of the tunnels is fragile and charged with water particularly …

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Mitigation Of Seismic Deformation Of Anchored Quay Wall By Compacting, Pooyan Ghasemi, Abbas Ghalandarzadeh, Ashraf Zekri, Mohammad H. Aminfar Apr 2013

Mitigation Of Seismic Deformation Of Anchored Quay Wall By Compacting, Pooyan Ghasemi, Abbas Ghalandarzadeh, Ashraf Zekri, Mohammad H. Aminfar

International Conference on Case Histories in Geotechnical Engineering

The anchored quay walls or bulkheads are commonly used in coastal areas. Previous studies on the seismic behavior of these quay walls have shown a significant effect of the liquefaction on the performance of the walls. Considerable length of an anchored sheet pile wall in Rajaii port, Iran, has been embedded in liquefiable sand. This study tries to clarify failure mechanism of the wall during earthquake and to identify more effective zone for improvement of the wall stability. Numerical modeling by DIANA software and physical modeling by shake table were presented. Results show that the main reason for extensive deformation …

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Restoration Of The Military Club Building In Sofia, By Micro Pile Injections, Chavdar Vassilev Kolev Apr 2013

Restoration Of The Military Club Building In Sofia, By Micro Pile Injections, Chavdar Vassilev Kolev

International Conference on Case Histories in Geotechnical Engineering

The building of the Military Club is one of the most beautiful architectural monuments within the Bulgarian capital of Sofia. Construction of the club in a New Renaissance style and was initiated in 1895 according to the draft of Antonin Kolar, the famous Czech architect. It was completed in 1907 by Nikola Lazarov, a no less famous Bulgarian architect. Thereafter, a long series of cultural events, important for Bulgarian history were held on in Sofia Military Club. The building is a brick structure with three floors and a basement. Foundations are made out of massive stone blocks on the clay. …

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