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Articles 91 - 120 of 2055
Full-Text Articles in Engineering
Rbp-1: Shamsher Prakash, Shamsher Prakash
Rbp-1: Shamsher Prakash, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Soap-1: Clyde N. Baker, Jr., Clyde N. Baker Jr.
Soap-1: Clyde N. Baker, Jr., Clyde N. Baker Jr.
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Keynote Lecture: W. D. Liam Finn, W. D. Liam Finn
Keynote Lecture: W. D. Liam Finn, W. D. Liam Finn
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.
Core Planning Committee, Multiple Members
Core Planning Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Chicago Area Committee, Multiple Members
Chicago Area Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Cooperating Organizations, Multiple People
Cooperating Organizations, Multiple People
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Conference Supporters, Multiple Participants
Conference Supporters, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Financial Co-Sponsor, Multiple Participants
Financial Co-Sponsor, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Exhibitors, Multiple Participants
Exhibitors, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
A Comparison Of Three And Two-Dimensional Analyses Of Rockfill Dams In Narrow Valleys (A Case Study: The Vanyar Dam), Mehdi Derakhshandi, Mojtaba Honarmand, Amir Hossein Sadeghpour
A Comparison Of Three And Two-Dimensional Analyses Of Rockfill Dams In Narrow Valleys (A Case Study: The Vanyar Dam), Mehdi Derakhshandi, Mojtaba Honarmand, Amir Hossein Sadeghpour
International Conference on Case Histories in Geotechnical Engineering
A two-dimensional analysis of the largest cross-section of earth dams may generate appropriate results provided that the dam is located in a U-shape valley. The Vanyar dam has been constructed in a narrow valley. With regard to the geometrical consideration of the valley, there is no plane strain condition throughout the long side of the dam. In this research, the results of three and two dimensional numerical analyses of the Vanyar dam are compared in terms of settlement, pore water pressure, and total vertical stress. These analyses were carried out by a finite difference method through FLAC-3D and FLAC-2D softwares. …
A Non-Linear Method To Estimate Elastic Settlement Of Shallow Foundations Using Small-Strain Stiffness, Reza Amini Ahidashti, Abdolhosain Hadad
A Non-Linear Method To Estimate Elastic Settlement Of Shallow Foundations Using Small-Strain Stiffness, Reza Amini Ahidashti, Abdolhosain Hadad
International Conference on Case Histories in Geotechnical Engineering
In this paper, we investigated how to utilize the small-strain stiffness order to estimate the settlement of shallow foundation on granular soils. For this purpose, a power law equation between normalized shear modulus and shear strain was presented. Based on elasticity theory and proposed equation, a new method in term of small-strain stiffness was suggested order to estimate the immediate settlement. In order to evaluate the proposed method, a series case history was studied, that included the loading tests and seismic geophysical tests. These field measurements are compared to the predicted values. The result indicated that the proposed method in …
A Us-India Example In Case History Use In Levee Safety — A Multi-Cultural Perception Of What It Is, And How Should It Be Applied, Padmakar Srivastava, Alan Tamm, Eric Halpin, Winston Yu
A Us-India Example In Case History Use In Levee Safety — A Multi-Cultural Perception Of What It Is, And How Should It Be Applied, Padmakar Srivastava, Alan Tamm, Eric Halpin, Winston Yu
International Conference on Case Histories in Geotechnical Engineering
The State of Bihar, India experienced substantial flooding in the Ganges Basin as a result of levee (embankment) non performance. As a result of the 2008 failures the Bihar Water Resources Department is examining, as a programmatic model, the US experience in establishing and conducting the United States Army Corps of Engineers (USACE) Levee Safety Program. This case model examination is intended to structure a new program for managing the Bihari embankment infrastructure. Similar to many historical flood control initiatives throughout the world, India’s embankment infrastructure shows the effects of aging and multi-purpose use of the facilities. To examine what …
An Example Of Teaching Slope Stability From True Case Histories, Diego Lo Presti
An Example Of Teaching Slope Stability From True Case Histories, Diego Lo Presti
International Conference on Case Histories in Geotechnical Engineering
The use of case histories in classroom mainly involves an inductive teaching approach. This paper discusses the intrinsic advantages and possible drawbacks of such an inductive approach. More specifically, the paper illustrates an example of teaching the class of “slope stability” based on such methodology. The class takes place at the University of Pisa in the second tier degree of Civil Engineering of Infrastructures. The inductive teaching approach is very popular in the British/American Higher Education system. On the contrary it is not so popular in Latin countries like Italy. In order to make more clear the comprehension of this …
Application Of Observational Method In The Successful Construction Of Underground Structures, Sardar Sarovar (Narmada) Project, Gujarat, India, Indra Prakash
International Conference on Case Histories in Geotechnical Engineering
The Sardar Sarovar (Narmada) underground powerhouse is located in Deccan Basalt flows in the lower Narmada valley in Gujarat state. These flows are intruded by dolerite dykes and sill. Basalt flows and dolerite rocks are considered good tunneling media for locating underground structures. Therefore, initial designing of supports was done considering good rock mass conditions. However, during construction numerous geotechnical problems were encountered necessitating review of support system. Rock falls and collapses were observed in tunnel sections passing through dolerite dykes and sills. Cracks were observed in the walls of the powerhouse cavern. During progressive excavations back analysis was done …
Behaviour Of A Large Anchored Basement In Dense Sands And Gravels, Francesco Petrella, Roberto Persio, Silvia Ferrero, Tim Hocombe
Behaviour Of A Large Anchored Basement In Dense Sands And Gravels, Francesco Petrella, Roberto Persio, Silvia Ferrero, Tim Hocombe
International Conference on Case Histories in Geotechnical Engineering
Prior to the excavation of half a million cubic meters of dense gravelly material within the city centre of Milan, a 24 to 27m long diaphragm wall was built to provide a 17m retained height to a four-level basement. Temporary support was offered by two to four rows of ground anchors with the exception of a portion adjacent to an existing multi-level cark park where a post-tensioned capping beam was installed to protect the car park and prevent it from being subject to sway. Other design challenges were posed by the proximity of a buried channel and of an urban …
Calibration Of Numerical Model For Liquefaction-Induced Effects On Levees And Embankments, Michelle Shriro, Jonathan D. Bray
Calibration Of Numerical Model For Liquefaction-Induced Effects On Levees And Embankments, Michelle Shriro, Jonathan D. Bray
International Conference on Case Histories in Geotechnical Engineering
Soil liquefaction presents a significant hazard to the built environment. The seismically induced permanent displacement of earth levees, dams, and embankments resulting from liquefaction below these earth structures is not well captured in current seismic design practice. The objective of this study is to advance the capabilities of numerical methods toward the solution of problems involving limited lateral spreads. The nonlinear soil constitutive model UBCSAND, as implemented in the finite difference program FLAC, (Itasca), is used to evaluate the seismic deformations of the newly-constructed Moss Landing Marine Laboratory (MLML) in Moss Landing, California resulting from liquefaction-induced lateral movements during the …
Case Histories In Geotechnical Engineering Education, James Mahar
Case Histories In Geotechnical Engineering Education, James Mahar
International Conference on Case Histories in Geotechnical Engineering
Case histories can be taught as an individual course or as part of a specific engineering class. These studies are very important when the teaching methodology incorporates the observational approach in design and construction. Several resources for case histories are available. However the most insightful are those in which the instructor has personal knowledge or the student participates in a case history-type project. One of the most important elements in engineering education is the sequential design approach in civil works projects. Case histories provide a very effective means of illustrating the complete design process which is the framework of professional …
Case History — Performance Monitoring Success, Charles B. Grant, Tom Hurley
Case History — Performance Monitoring Success, Charles B. Grant, Tom Hurley
International Conference on Case Histories in Geotechnical Engineering
The City Creek Center urban redevelopment project in Salt Lake City, Utah involved excavations up to 65 feet deep. Shoring systems included more than 29,000 square feet of anchored diaphragm walls, 100,000 square feet of soil nail walls, and 860 linear feet of underpinning. Detailed performance monitoring alerted the project team to unacceptable performance of an anchored diaphragm wall adjacent to an occupied twenty-five-story building on shallow foundations. This knowledge allowed the team to react quickly, stabilize the excavation, investigate the situation, and develop successful remedial measures. The diaphragm wall was reinforced with additional anchors and subgrade concrete struts, allowing …
Case Studies Used In Instruction To Achieve Specific Learning Outcomes: The Case Of The Embankments Constructed For The Approach To Limerick Tunnel, Ireland, Trevor L. L. Orr, Marina Pantazidou
Case Studies Used In Instruction To Achieve Specific Learning Outcomes: The Case Of The Embankments Constructed For The Approach To Limerick Tunnel, Ireland, Trevor L. L. Orr, Marina Pantazidou
International Conference on Case Histories in Geotechnical Engineering
This paper gives an example of a case study written for instructional purposes, in order to support the achievement of specific learning outcomes which include (i) identifying modes of failure and (ii) selecting appropriate soil parameter types and values. Case writing was based primarily on information from a detailed publicly available article, supplemented with additional input from one author of this article. The case narrative is accompanied by annotated calculations, which follow the general design philosophy of the project. The case focuses on two of the main issues for the geotechnical design of the highway embankments close to the Limerick …
Composite Shallow & Deep Foundation In Karst Geology For The Countryside Christian Center New Sanctuary Clearwater, Florida, Said Iravani
Composite Shallow & Deep Foundation In Karst Geology For The Countryside Christian Center New Sanctuary Clearwater, Florida, Said Iravani
International Conference on Case Histories in Geotechnical Engineering
Evaluation, design, construction, and monitoring of foundations in karst geology are challenging tasks. The random presence of karst features, the variation in size, extent, and depth of karst features, and the different origin and geological characteristics of karst features make site characterization and investigation difficult. A balance between non-intrusive filed tests is useful to improve the site characterization. Non-intrusive field tests which provide multi-dimensional mapping such as Electrical Resistivity Imaging (ERI) or Ground Penetrating Radar (GPR) can provide spatial coverage instead of point data. Non-intrusive field tests which are not sensitive to moisture such as shear wave velocity measurements can …
Enhancement Of Engineering Education In The Arab Gulf States Through Cooperative Learning Protocols, Waddah Akili
Enhancement Of Engineering Education In The Arab Gulf States Through Cooperative Learning Protocols, Waddah Akili
International Conference on Case Histories in Geotechnical Engineering
Engineering education in the Arab Gulf States (the Region) faces significant challenges as it seeks to meet the demands on the engineering profession in the twenty first century. This paper focuses on classroom-based pedagogies of engagement, and cooperative learning strategies in particular. The paper is a follow up to previous work by the author, on viable strategies to improve the classroom environment of engineering colleges in the Region. At the start, the paper provides an overview of relevant benchmarks of engineering education in the Region. Then, relates author’s preliminary findings on teaching/learning practices in Region’s colleges, sheds light on the …
Foundation Design And Settlement Measurement Of Cctv New Headquarter, Wang Wei-Dong, Wu Jiang-Bin, Weng Qi-Ping
Foundation Design And Settlement Measurement Of Cctv New Headquarter, Wang Wei-Dong, Wu Jiang-Bin, Weng Qi-Ping
International Conference on Case Histories in Geotechnical Engineering
The China Central Television (CCTV) New Headquarter is situated in Chaoyang District of Beijing. It consists of two main towers and podiums. The bored piles with diameter of 1200mm and single pile bearing capacity of 11000kN were chosen for the towers. Through the combination of pile-end and shaft grouting, as well as in-situ bearing capacity tests of piles with different pile length, the pile length, the costs and construction difficulties were reduced considerably. Based on the concept of interactions among the superstructure, the foundation raft, the piles and soils, calculations and analysis were carried out on the design of the …
Geosynthetic Reinforced Segmental Retaining Wall Failure: Forensic Investigation And Remediation, Rajaram Janardhanam, Migue A. Pando
Geosynthetic Reinforced Segmental Retaining Wall Failure: Forensic Investigation And Remediation, Rajaram Janardhanam, Migue A. Pando
International Conference on Case Histories in Geotechnical Engineering
At UNC Charlotte, the authors have used a retaining wall failure case history to cover the different modes of failure of retaining wall and to highlight the importance of global stability failure. Specifically, this case study has been used by the authors in undergraduate and graduate courses of geotechnical engineering to highlight the importance to include in the design process the assessment of global stability. The project is valuable to students due to wealth of data including field and laboratory site investigation, monitoring data from slope inclinometers, amongst other data. The students are presented with the initial design information including …
Geotechnical Failures Caused By Human Errors, Marek Tarnawski
Geotechnical Failures Caused By Human Errors, Marek Tarnawski
International Conference on Case Histories in Geotechnical Engineering
The West Pomeranian Technical University holds conferences on building failures. It usually takes place every other year and it is well known and respected in Poland. The jubilee, 25th conference took place in 2011. With intent to honor it the author prepared a monograph entitled “Geotechnical reasons of building failures”. It was based, almost solely, on the contents of 225 case studies presented in the former conference proceedings. As with every conference based so much on case histories it presents in its papers a mosaic of various cases. Although each describes and explains the reality in its own way, systematic …
Geotechnical Investigation At Barrage For Foundation Design At Nyamjang Chhu Hydro Power Project, Tawang, Arunachal Pradesh, India — A Case Study, Ram Bachan Shivali, Rakesh Mahajan
Geotechnical Investigation At Barrage For Foundation Design At Nyamjang Chhu Hydro Power Project, Tawang, Arunachal Pradesh, India — A Case Study, Ram Bachan Shivali, Rakesh Mahajan
International Conference on Case Histories in Geotechnical Engineering
The Nyamjang Chhu Hydro Electric Project (780 MW) located in District Tawang, Arunachal Pradesh, India, proposes construction of a barrage across Nyamjang Chhu River for diversion of water for power generation. The diversion barrage comprises of gated spillway and sluiceway, head regulator, surface desanders and a collection pool cum tunnel intake. Geotechnical investigations for assessment of subsoil strata at barrage location and its evaluation for foundation design included drilling of 13 no boreholes totaling 551m. In-Situ permeability and standard penetration tests (SPT) were conducted in the boreholes along with Dynamic Core Penetration Test (DCPT) conducted adjacent to boreholes. Disturbed and …
Importance Of Observational Method In View Of Numerical Analyses For Retaning Structures In Soft Soils, Patrick Becker
Importance Of Observational Method In View Of Numerical Analyses For Retaning Structures In Soft Soils, Patrick Becker
International Conference on Case Histories in Geotechnical Engineering
The soil-structure-interaction of retaining structures is complex and dependent on many factors. In particular excavations in soft soils and urban environments with adjacent buildings are always subjected to deformations which are not fully avoidable. Therefore, numerical analyses can be a powerful tool for predicting the stress path and time dependent deformation behavior of retaining structures in soft soils. But the quality of these numerical predictions is directly related to the used constitutive soil models, the estimation of their material parameters and a realistic simulation of the soil-structure-interaction. The fact that Class-A predictions of the deformation behavior of retaining structures in …
Insurance Industry Perspective On The Importance Of Geotechnical Earthquake Engineering For Commercial Structures, James Saldaña
Insurance Industry Perspective On The Importance Of Geotechnical Earthquake Engineering For Commercial Structures, James Saldaña
International Conference on Case Histories in Geotechnical Engineering
Pricing in the commercial catastrophe insurance market is primarily driven by computer models. For the evaluation of commercial earthquake insurance risk, the majority of insurers, reinsurers and more recently, rating agencies, rely heavily on the output models developed by a few software vendors. Insurers and reinsurers evaluate their total risk based on output from one or more of these models, and develop prices that depend on the loss estimate data from the models. In an effort to most accurately potential, soil conditions and engineering practices are recognized by the model vendors and incorporated into the loss calculation algorithms.When an insurer …
Liquefaction Resistance Of Gravelly Soils, Michael R. Lewis, Ignacio Arango, Kenneth H. Stokoe Ii
Liquefaction Resistance Of Gravelly Soils, Michael R. Lewis, Ignacio Arango, Kenneth H. Stokoe Ii
International Conference on Case Histories in Geotechnical Engineering
Liquefaction assessments of gravels and soils that contain a large gravel fraction are difficult. Undisturbed (intact) sampling of these soils is problematic and laboratory testing carried out on reconstituted samples or on frozen samples obtained from the field is time consuming, expensive, and interpretation of the results requires considerable judgment. Because of these and other issues, for a remote site in British Columbia, Canada (aka “Study Site”), it was decided to carry out the liquefaction potential assessment using existing published relationships and case history data on similar soils. This case history describes the approach utilized, including material mechanical properties, measured …
Networked Geotechnical Near Real-Time Monitoring For Large Urban Excavation Using Multiple Wireless Sensors, Stephen M. Mclandrich, Youssef M. A. Hashash, Nick J. O’Riordan
Networked Geotechnical Near Real-Time Monitoring For Large Urban Excavation Using Multiple Wireless Sensors, Stephen M. Mclandrich, Youssef M. A. Hashash, Nick J. O’Riordan
International Conference on Case Histories in Geotechnical Engineering
A massive urban excavation is required to construct the below-grade rail platforms for the Transbay Transit Center. A performance-based approach was used to design the minimum stiffness of the shoring system to limit excavation-induced ground movements to appropriate magnitudes and minimize impact to adjacent infrastructure. During construction, a fully-automated near real-time digital geotechnical monitoring system that integrates wireless sensor data streams into an integrated database and decision support system called the Global Analyzer is used to track the performance of this excavation. Instrumentation used for monitoring includes inclinometers, deep settlement markers, extensometers, piezometers, and an automated total station network. Some …