Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Civil Engineering (3)
- Electrical and Computer Engineering (2)
- Electrical and Electronics (2)
- Signal Processing (2)
- Aerospace Engineering (1)
-
- Computer Engineering (1)
- Construction Engineering and Management (1)
- Digital Communications and Networking (1)
- Environmental Engineering (1)
- Hydraulic Engineering (1)
- Library and Information Science (1)
- Navigation, Guidance, Control and Dynamics (1)
- Other Engineering (1)
- Social and Behavioral Sciences (1)
- Structural Engineering (1)
- Systems and Communications (1)
- Institution
- Keyword
-
- Ireland (2)
- Adaptive Wiener filtering. (1)
- Antennas (1)
- Broadband properties (1)
- Case studies (1)
-
- Cost-benefit analysis (1)
- Drop analysis (1)
- Earthquake zonation (1)
- Electromagnetic bandgap solutions (EBG). (1)
- Expansive (high PI) clay (1)
- Expert system (1)
- Fibre optic technology (1)
- GIS (1)
- Global positioning systems (GPS) (1)
- Instrumentation (1)
- Land use (1)
- Las Vegas (1)
- Longitudinal cracking (1)
- Monte Carlo method (1)
- Monte Carlo method--Computer simulation (1)
- Monte-Carlo simulation (1)
- Natural hazards (1)
- Pavement design (1)
- Peat (1)
- Photometry (1)
- Plans (1)
- Rampart roads (1)
- Remediation strategies (1)
- SEA (1)
- Seismology (1)
- Publication
- Publication Type
Articles 1 - 30 of 363
Full-Text Articles in Geotechnical Engineering
Incorporating Spatial Data And Gis To Improve Sea Of Land Use Plans: Opportunities And Limitations: Case Studies In The Republic Of Ireland, Ainhoa Gonzalez Del Campo
Incorporating Spatial Data And Gis To Improve Sea Of Land Use Plans: Opportunities And Limitations: Case Studies In The Republic Of Ireland, Ainhoa Gonzalez Del Campo
Doctoral
This research aimed at establishing whether spatial data and Geographic Information Systems (GIS) can contribute to Strategic Environmental Assessment (SEA). To achieve this, an integrated GISEA approach was developed and applied to a number of spatial planning SEAs in the Republic of Ireland. The practical applicability of the approach was examined, evaluating the potential benefits derived from using spatial data and GIS in SEA and assessing the potential barriers to an effective GIS use. The implementation of the SEA Directive incorporated a new dimension into plan-making by calling for the assessment of potential environmental effects that may derive from implementing …
Site Response Zones And Short-Period Earthquake Ground Motion Projections For The Las Vegas Basin, Barbara Luke, Ying Liu
Site Response Zones And Short-Period Earthquake Ground Motion Projections For The Las Vegas Basin, Barbara Luke, Ying Liu
Civil and Environmental Engineering and Construction Faculty Research
A deterministic seismic hazard analysis was conducted to address the effect of local soil conditions on earthquake-induced strong ground motion in the Las Vegas Basin, Nevada (US). Using a large geological and geotechnical database, two response units were defined: a fine-grained unit, predominantly clay; and a coarse-grained unit, predominantly gravel. A moderate number of high-quality shallow shear wave velocity measurements were collected from which characteristic shear wave velocity profiles were developed for each response unit. An equivalent-linear one-dimensional site response model was used. The model was calibrated using a basin-wide, small-strain ground motion database. Calibration tests showed that ground motion …
Analysis And Stabilization Of A Failed Cut Slope In Schist, S. B. Manolopoulou, T. T. Papaliangas, T. C. Dimopoulos
Analysis And Stabilization Of A Failed Cut Slope In Schist, S. B. Manolopoulou, T. T. Papaliangas, T. C. Dimopoulos
International Conference on Case Histories in Geotechnical Engineering
This paper focuses on the description, analysis and stabilization of a failed cut slope in schist. The slope is located near the top of a hill and was cut for the needs of a new industrial building. A few weeks after the excavation, a slide occurred along the schistosity plane of the slope. The slide was attributed to the effect of water which flooded the slope following an overflow of a water tank located a few meters above the slope crest. For the analysis both the deterministic and probabilistic approaches were carried out, with the input parameters determined from simple …
Case History And Numerical Analysis Of Trench Collapse In Japan, Sahaphol Timpong, Kazuya Itoh, Yasuo Toyosawa
Case History And Numerical Analysis Of Trench Collapse In Japan, Sahaphol Timpong, Kazuya Itoh, Yasuo Toyosawa
International Conference on Case Histories in Geotechnical Engineering
This paper presents a case history of trench collapse occurred during trench excavation in soft ground. The development of settlement and horizontal displacement, the generation of pore water pressure during the construction and mechanism of trench collapse are investigated by means of centrifuge modeling and numerical analysis. It is found that the combination of centrifuge modeling and in-flight sand hopper can provide dramatic result for simulation of the trench collapse. Based on the results, it is verified that the occurrence of trench collapse is mainly caused by the excessive surcharge load of excavated material stockpiled on top of the trench.
Slope Stability Study Of External Dump Of Sonepur-Bazari Opencast Coal Mine, India — A Case Study, Indrajit Roy
Slope Stability Study Of External Dump Of Sonepur-Bazari Opencast Coal Mine, India — A Case Study, Indrajit Roy
International Conference on Case Histories in Geotechnical Engineering
India has reached the forefront of the world coal scene, ranking third in the total coal production, largely due to rapid increase in production from its opencast coal mines. But with a very high density of population, India is in a very disadvantageous position in acquiring large tracts of land for open cast coal mining which involves handling of large volume of waste rock overburden, a portion of which is to be dumped outside the quarry in a convenient place considering the safety, environment and economical aspects. This waste material dumped outside the quarry is termed as external dump. This …
The Importance Of Mineralogy And Grain Compressibility In Understanding Field Behavior Of Failures, Abouzar Sadrekarimi, Scott M. Olson
The Importance Of Mineralogy And Grain Compressibility In Understanding Field Behavior Of Failures, Abouzar Sadrekarimi, Scott M. Olson
International Conference on Case Histories in Geotechnical Engineering
In this paper, we examine the role of grain mineralogy and compressibility, sample preparation, and shear strain/displacement levels on the shearing behavior of sands using undrained triaxial and constant volume ring shear tests in an attempt to explain some discrepancies observed between field and laboratory behavior. As expected, preparation by moist tamping can produce specimens that are contractive throughout shear, while counterparts prepared using pluviation exhibit dilative behavior at intermediate shear strain/displacement levels (i.e., after initial yield). However, both triaxial and ring shear tests illustrate that some sands consisting of more compressible minerals can exhibit entirely contractive behavior regardless of …
Considerations On Different Features Of Local Seismic Effect Numerical Simulations: The Case Studied Of Castelnuovo Garfagnana, Savino Russo, Giovanna Vessia, Claudio Cherubini
Considerations On Different Features Of Local Seismic Effect Numerical Simulations: The Case Studied Of Castelnuovo Garfagnana, Savino Russo, Giovanna Vessia, Claudio Cherubini
International Conference on Case Histories in Geotechnical Engineering
Numerical studies of local seismic effects are commonly carried out by means of 1D and 2D simulations performed in order to evaluate amplification effects in terms of acceleration response spectra and amplification factors. Such approaches can be easily compared with prescriptions from technical provisions as Eurocode 8 that lead design activity whenever a poor soil characterization is available. When suitable investigation campaigns and regional hazard studies are undertaken accurate studies on local seismic effects can be developed. As a matter of fact, soil high heterogeneity and variability, input motion features and geometrical irregularities of soil layer boundaries heavily affect seismic …
Design Prediction And Performance Of Piles For Seismic Loads, Vijay K. Puri, Shamsher Prakash
Design Prediction And Performance Of Piles For Seismic Loads, Vijay K. Puri, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
Pile foundations are regarded as a safe alternative for supporting structures in seismic areas. The performance of piles depends on soil profile, pile and earthquake parameters. The soils may also be prone to liquefaction. In non-liquefying soils the shear modulus degrades with increasing strain or displacements. Material damping increases with increasing strain or displacement. Stiffness of single pile and pile groups are needed for different modes of vibration; e.g., vertical vibrations, horizontal sliding in x or y direction, rotation about x or y axis and torsion. Group action is generally accounted for by including interaction factors. Pile response in any …
Seismic Microzonation Studies In The City Of Ragusa (Italy), Salvatore Grasso, Lauretta Spina, Michele Maugeri
Seismic Microzonation Studies In The City Of Ragusa (Italy), Salvatore Grasso, Lauretta Spina, Michele Maugeri
International Conference on Case Histories in Geotechnical Engineering
The geotechnical zonation of the subsoil of the city of Ragusa suggests a high vulnerability of the physical environment added to site amplification of the ground motion phenomena. These elements concur on the definition of the Seismic Geotechnical Hazard of the city of Ragusa that should be correctly evaluated, through geo-settled seismic microzoning maps. Based on the seismic history of Ragusa, the following scenario events have been considered: the “Val di Noto” earthquake of January 11, 1693 (M=7.3), the “Etna” earthquake of March 1, 1818 (M=5.9), the 1895 earthquake (IMAX= 7 EMS), the Modica earthquake of January 23, …
Simulation Of Shaking Table Tests To Study Soil-Structure Interaction By Means Of Two Different Constitutive Models, G. Abate, M. R. Massimino, M. Maugeri
Simulation Of Shaking Table Tests To Study Soil-Structure Interaction By Means Of Two Different Constitutive Models, G. Abate, M. R. Massimino, M. Maugeri
International Conference on Case Histories in Geotechnical Engineering
The paper presents the main results of a FEM 3-D model reproducing a physical model subjected to shaking table tests. The tests, performed at the EERC laboratory of Bristol University, have been simulated by means of a new numerical model based on a recent constitutive model characterized by isotropic and kinematic hardening and devoted to granular soil. The shaking table tests have been performed using: a six-degree of freedom shaking table; a shear-stack; a scaled one-storey steel frame; the Leigthon Buzzard Sand. The tests have been characterized by 11 shaking runs. As regards the 3-D numerical modeling, the linear elastic …
Anchored Rcc Diaphragm Wall Coffer Dam For Bisalpur Dam (A Case - Study), Ravindra Gill, Mahavir Bidasaria
Anchored Rcc Diaphragm Wall Coffer Dam For Bisalpur Dam (A Case - Study), Ravindra Gill, Mahavir Bidasaria
International Conference on Case Histories in Geotechnical Engineering
Construction of dam foundation of Bisalpur masonry dam on river Banas was posing a problem due to presence of medium and coarse sand in the river bed. In post monsoon period, though there remains very little surface flow in the river, but ipso-facto entire river flows through 10 to 12 m thick sand bed. Hence RCC diaphragm wall was conceived to play dual role i.e. to cut off the flow through the sand bed and also to act as coffer dam to divert the surface flow in the diversion channel. 60 cm thick RCC diaphragm wall has been constructed and …
Behavior Of An Excavation Adjacent To A Historical Building And Metro Tunnels In Shanghai Soft Clays, J. Jia, J. H. Wang, C. P. Liu, L. L. Zhang, X. L. Xie
Behavior Of An Excavation Adjacent To A Historical Building And Metro Tunnels In Shanghai Soft Clays, J. Jia, J. H. Wang, C. P. Liu, L. L. Zhang, X. L. Xie
International Conference on Case Histories in Geotechnical Engineering
In this paper, a case history of a deep excavation in Shanghai, which was adjacent to a historical building founded on 27 m long wooden piles and operating Metro tunnels, is presented. The effects of the excavation on the nearby pile foundation and the existing tunnels are investigated using two-dimensional finite element modeling. The predicted maximum horizontal and vertical displacements of the wooden piles are 15.8 mm and 7.6 mm, respectively. The horizontal and vertical movements of the utility tunnel and Metro tunnel are all less than 10 mm, which satisfies the current design criteria for controlling the deformation of …
Stability Of A Mse Wall Under Bridge Falsework Bent Surcharge, Kumars Zand-Parsa, Kamran Zand-Parsa
Stability Of A Mse Wall Under Bridge Falsework Bent Surcharge, Kumars Zand-Parsa, Kamran Zand-Parsa
International Conference on Case Histories in Geotechnical Engineering
A very long cast in place pre-stressed concrete box girder bridge with tall columns in southern California is under construction. Two of the falsework bents were set on top of an uncompleted 9.5m tall MSE wall back fill. The concern was about the unexpected surcharge load behind the MSE wall during the soffit and stem bridge concrete pour, and the influence of the uniform concentrated surcharge on the wall stability and the bridge as well. The falsework bent load had created unexpected vertical load behind the MSE wall that could decrease the wall stability by generating extra lateral pressure and …
Characterization Of A Weak Rock Mass And Geoengineering Analyses For A Canyon Landfill In Northern California, Dimitrios Zekkos, Julien Cohen-Waeber, Edmund Medley, Chris Hunt, Krzysztof Jesionek
Characterization Of A Weak Rock Mass And Geoengineering Analyses For A Canyon Landfill In Northern California, Dimitrios Zekkos, Julien Cohen-Waeber, Edmund Medley, Chris Hunt, Krzysztof Jesionek
International Conference on Case Histories in Geotechnical Engineering
A case history of extensive 60-m high excavations in a weak rock mass for a canyon landfill in Northern California is presented. The landfill is underlain by the Panoche Formation, a complex series of sandstones, siltstones, claystones, shales and conglomerates, thought to be dominantly turbidites, deposited as sub-sea fan deposits. As part of the design, kinematic analyses were performed, accompanied by two independent approaches used to evaluate the strength of the rock mass. One approach was based on laboratory rock core testing, while the second approach was based on the Hoek and Brown Criterion using mostly field observations. The two …
Use Of Strengthening Cementation When Civil Structures On Karsted Territories Construction, F. E. Volkov, L. N. Gera
Use Of Strengthening Cementation When Civil Structures On Karsted Territories Construction, F. E. Volkov, L. N. Gera
International Conference on Case Histories in Geotechnical Engineering
The paper describes measures on strengthening cementation of karsted territories both when erection of new houses and in failure situations. The result of strengthening cementation is water resistant strong base preventing development of karst-suffosion processes.
Evaluation Of Empirical Relationships For Dynamic Compaction In Liquefiable Reclaimed Silty Sand Layers Using Pre/Post Cone Penetration Tests, Hamid Reza Nouri, Hamid Ali-Elahi, Mehdi Jalili, Ehsan Seyedi Hosseininia
Evaluation Of Empirical Relationships For Dynamic Compaction In Liquefiable Reclaimed Silty Sand Layers Using Pre/Post Cone Penetration Tests, Hamid Reza Nouri, Hamid Ali-Elahi, Mehdi Jalili, Ehsan Seyedi Hosseininia
International Conference on Case Histories in Geotechnical Engineering
This case history presents an application of Dynamic Compaction of the soil layers susceptible to liquefaction behind the main container quay wall of Shahid Rajaee Port Complex Development (SRPCD), situated on shores of Persian Golf near Bandar-Abbas. The liquefaction of such layers during earthquake results in the great lateral earth pressure as well as the settlement and large horizontal deformation of the main wall and anchor wall. Regarding the extension and the depth of the identified liquefiable layers, the improvement method of dynamic compaction was employed to mitigate the liquefaction destructive effect. Generally, the subsoil liquefiable layers of the SRPCD …
Ground Improvement Of A Beach Structure Complex By Means Of Stone Columns – A Saudi Arabian Case History, Syed Faiz Ahmad
Ground Improvement Of A Beach Structure Complex By Means Of Stone Columns – A Saudi Arabian Case History, Syed Faiz Ahmad
International Conference on Case Histories in Geotechnical Engineering
Saudi Arabian is a vast peninsula with varying surface and sub-surface geology. There are many regions, especially near the eastern and western coasts, where the sub-surface soil is very poor. In these regions ground improvement is inevitable. The case in point is a Beach Structure Complex built along the famous Half Moon Bay Beach of Al-Khobar in the eastern coast of the Kingdom. The geotechnical investigations revealed poor soil condition and suggested use of Stone Columns for improving the ground condition. A total of 3119 Stone Columns were installed under five important buildings by means of Vibro-Replacement Techniques. The performance …
Improvement Characteristics Of Ground Using C.G.S Through Field Case Study, Byung-Sik Chun, Duk-Hum Park, Jong-Nam Do, Yong-Goo Jang
Improvement Characteristics Of Ground Using C.G.S Through Field Case Study, Byung-Sik Chun, Duk-Hum Park, Jong-Nam Do, Yong-Goo Jang
International Conference on Case Histories in Geotechnical Engineering
Compaction Grouting System is widely used in densifying loose soils or fill voids caused by sinkholes, poorly compacted fills, and soft ground improvement. Also, it is used in preventing liquefaction, re-leveling settled structures, and using compaction bulbs as structural elements of minipiles or underpinning. But the effects of ground improvement depending on the type of soil must be studied in order to adopt in various soils. In this study, characteristics analysis of the ground improvement and the effectiveness of reinforcement were grasped by this study which shows applied ground by Compaction Grouting System in domestic 6 sites. After Compaction Grouting, …
Redevelopment Of A Municipal Solid Waste Landfill: Engineering Design Challenges, Derrick A. Shelton, David A. Schoenwolf, Nisha P. Mohanan
Redevelopment Of A Municipal Solid Waste Landfill: Engineering Design Challenges, Derrick A. Shelton, David A. Schoenwolf, Nisha P. Mohanan
International Conference on Case Histories in Geotechnical Engineering
Loyola College in Maryland is a land-locked University in dire need of increasing its academic space. Working with the Baltimore Development Corporation, Loyola purchased a 52-acre parcel of land within miles of their campus which consisted of three closed landfills. The site was Loyola’s preferred location to construct a state-of-the-art athletic complex because moving their athletic facilities to an off-campus location would allow the expansion of their academic space. The athletic complex includes a home game field for lacrosse and soccer, two practice fields, administrative and maintenance buildings, stadium, and supporting infrastructure. Filling at the three landfills began in 1930 …
Temporary Support Of Excavation System For 300 New Jersey Avenue, Irvin Ragsdale, Keki Wadia
Temporary Support Of Excavation System For 300 New Jersey Avenue, Irvin Ragsdale, Keki Wadia
International Conference on Case Histories in Geotechnical Engineering
This paper discusses the design, construction, and performance of the support of excavation system used at 300 New Jersey Avenue jobsite. The temporary support of excavation system is more complicated than the typical urban site in Washington D.C. and had to be adaptable to many different and variable conditions surrounding the site. These conditions included support of a six and seven story office building, WMATA’s Red Line Subway tunnel under D Street and the support of the 24 foot wide brick and stone Tiber Creek Sewer, which was built in the late 1800’s to drain a major portion of Washington, …
Two History Cases Of Innovations, E. T. Arshba, V. A. Barvashov, G. V. Vasyukov
Two History Cases Of Innovations, E. T. Arshba, V. A. Barvashov, G. V. Vasyukov
International Conference on Case Histories in Geotechnical Engineering
In late 1970s and through 1980s the Soviet Government and the Communist Party encouraged engineers and scientists to develop innovations, to implement them in order to optimize and to increase the effectiveness of the national economy. “The economy must be economical” was the slogan of this policy. The R@D programs were well funded by the State. The paper describes two failures, linked up with implementation of cost-saving innovations: explosion of a 10,000 m3 liquid ammonia storage tank, and failure of a raft footing on largely spaced piles.
Investigation On The Causes Of Longitudinal Cracks On Prestressed Monoblock Railway Sleepers Of Metric Gauge Of The Greek Railway Network, Spyros Tsoukantas, Konstantinos Tzanakakis, Danai Spyropoulou, Petros Panopoulos, Manto Mintzia
Investigation On The Causes Of Longitudinal Cracks On Prestressed Monoblock Railway Sleepers Of Metric Gauge Of The Greek Railway Network, Spyros Tsoukantas, Konstantinos Tzanakakis, Danai Spyropoulou, Petros Panopoulos, Manto Mintzia
International Conference on Case Histories in Geotechnical Engineering
Recently (2007), during the rehabilitation of the Greek Railway Organization (OSE) line Korinth – Tripolis – Kalamata, longitudinal cracks have been observed in some of the prestressed monoblock sleepers of metric gauge used in this line. In this paper the methodology adopted by the committee that investigated the causes of this phenomenon is presented, e.g. on site investigation of the damaged sleepers, investigation of the probable causes of the cracks during the production of the sleepers (faulty concrete grade – faulty prestress level e.t.c.), together with theoretical considerations which, all together, led to the cracking of the sleepers.
Ice Protection Barrier Construction In Caspian Sea, Alp Gökalp, Rasin Düzceer
Ice Protection Barrier Construction In Caspian Sea, Alp Gökalp, Rasin Düzceer
International Conference on Case Histories in Geotechnical Engineering
This paper summarizes the execution of an on-going ice protection barrier construction project in the Northern Caspian Sea, Kazakhstan. The Project started in May, 2001 and a total of five artificial islands for oil drilling activities were completed until November, 2007. Ice protection structures consist of stronghold and barrier heads distributed around oil drilling islands (with dimensions of 90 m by 110 m to 90 m by 160 m) in order to protect the island from drifting ice ridges. These cofferdams consist of sheet piles and steel pipe piles with various dimensions. The piles were driven by vibro hammers and …
The Verdaland Rissa Landslides — Application Of Case Histories In Education, G. Bæverfjord, Vikas Thakur
The Verdaland Rissa Landslides — Application Of Case Histories In Education, G. Bæverfjord, Vikas Thakur
International Conference on Case Histories in Geotechnical Engineering
Trøndelag is a region in Mid-Norway with large deposits of quick and sensitive clays. Accordingly, the quick clay sliding activity in the region is rather high. The two best known cases are presented in this paper, the Verdal and the Rissa landslides. These slides have had a significant impact on the teaching and research at the Norwegian University of Technology and Science (NTNU) and on how the communities and authorities relate to risk of new slides. The Geotechnical Group at NTNU has been working extensively with quick clay behaviour through decades, particularly on understanding the progressive failure mechanism and modelling …
Chacao Channel Bridge – The Design Challenges, Kostis Syngros, Ricardo Dobry, George E. Leventis
Chacao Channel Bridge – The Design Challenges, Kostis Syngros, Ricardo Dobry, George E. Leventis
International Conference on Case Histories in Geotechnical Engineering
The Chacao Channel bridge, a planned privatized/concession bridge project, is to link the island of Chiloé with continental Chile through the Chacao Channel. When completed, it will be the longest suspension bridge in South America (2,365 m) with two approximately equal spans linking three pylons. The location of the bridge presents a combination of unprecedented challenges in the design and construction making it very unique, including: extreme seismicity with the largest earthquake recorded to date anywhere in the world having occurred very close to the envisioned bridge location (the 1960 Valdivia Earthquake with a moment magnitude of 9.5!); extremely strong …
New York City High-Rises On Rock: Uncovering The Unknown Leads To Variable Foundation Solutions, Tony D. Canale, Joel Moskowitz, James L. Kaufman
New York City High-Rises On Rock: Uncovering The Unknown Leads To Variable Foundation Solutions, Tony D. Canale, Joel Moskowitz, James L. Kaufman
International Conference on Case Histories in Geotechnical Engineering
Construction of high-rise towers in New York City continues to provide exciting challenges for design and construction teams. Sites are becoming increasingly more difficult to build on as “desirable” locations have long since been developed and developers are constructing on sites that were previously over looked. This paper describes two projects that provided unique challenges to the engineers and contractors. The first site is the New York Times Headquarters Tower. This site appeared to be a fairly straightforward foundation design, but became complicated as the subsurface conditions were uncovered. The second case history is the new Bank of America Tower …
Design, Construction, And Performance Of Low-Level Radioactive Waste Disposal Facility, Rudolph Bonaparte, John F. Beech, Leslie M. Griffin, David K. Phillips, Uday Kumthekar, Johnny Reising
Design, Construction, And Performance Of Low-Level Radioactive Waste Disposal Facility, Rudolph Bonaparte, John F. Beech, Leslie M. Griffin, David K. Phillips, Uday Kumthekar, Johnny Reising
International Conference on Case Histories in Geotechnical Engineering
A mixed low-level radioactive waste (LLRW) and Resource Conservation and Recovery Act (RCRA) waste on-site disposal facility (OSDF) was constructed as part of the remediation of the U.S. Department of Energy Feed Material Production Center in Fernald, Ohio. The 56-acre OSDF is fully constructed, filled with waste, and closed. Post-closure monitoring is ongoing. This paper presents the design, construction, and performance of the OSDF. Waste acceptance criteria and waste placement requirements are described. Results from three sets of pre-design field and laboratory investigations are summarized. Currently available performance data for the OSDF’s leachate collection system and leakage detection system are …
Application Of Simplified Models To Qualitative Geotechnical Analysis, V. A. Barvashov, P. V. Kharlamov, A. I. Naidenov, S. A. Rytov
Application Of Simplified Models To Qualitative Geotechnical Analysis, V. A. Barvashov, P. V. Kharlamov, A. I. Naidenov, S. A. Rytov
International Conference on Case Histories in Geotechnical Engineering
The paper describes an approach for qualifying soil-structure systems behavior, using simple numeric models – “geotoys”, reflecting the main features of the systems behavior and enabling numeric simulation of various case histories. Three case histories of major karstic sinkholes are analyzed to show that man-made structures above a karstic cavity prevent formation sinkhole. When plastic zones reach the structure periphery, the soil-structure system becomes unstable. Prior settlements could be negligible to serve as precursors. Another soil-footing-superstructure (SFSS) model is a 2D geotoy - an exact mathematical solution, used for multiple simulations (about 10,000) of SFSS sensitivity i.e., response to input …
Damage Of Governmental Building Due To Geotechnical Properties (Case History), Emad A. M. Osman, Suzan S. M. Salem
Damage Of Governmental Building Due To Geotechnical Properties (Case History), Emad A. M. Osman, Suzan S. M. Salem
International Conference on Case Histories in Geotechnical Engineering
This paper is a case study for a governmental building in a site located at Katamia zone (an extension of Great Cairo, Egypt). The site is belonging the Great Cairo Bus Station under the authority of Ministry of Transportation. It consists of two buildings and a shed for buses cleaning and lubrication. The buildings had been constructed since 15 years. However after two years of construction many cracks were noticed in the main building. Furthermore, after another few years, sever cracks had appeared in different parts of the building and the concrete water tank on the roof of same building …
Soil-Structure Interaction Considerations In Seismic Design For Deep Bridge Foundations, Dan Yang, Ernest Naesgaard, Peter M. Byrne
Soil-Structure Interaction Considerations In Seismic Design For Deep Bridge Foundations, Dan Yang, Ernest Naesgaard, Peter M. Byrne
International Conference on Case Histories in Geotechnical Engineering
Soil-structure interaction (SSI) effects when evaluating seismic response of deep bridge foundations to earthquake loading are complex and sometimes intriguing. The main factors in soil-structure interaction considerations that govern the seismic design of deep bridge foundations include interactive inertial forces, soil-pile kinematic forces in particular in liquefied sands or strain-softened clays due to seismic shaking, and the loss of soil support to the piles due to soil liquefaction. To evaluate these three key effects for the design of bridge foundations in seismic regions, soil-structure interaction analyses are normally required. Such analyses become more complex when soils supporting the bridge foundations …