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Articles 4201 - 4230 of 7866

Full-Text Articles in Civil and Environmental Engineering

General Report — Session 3: Engineering Seismology And Local Site Effects, Ronald C. Chaney, Dennis Hiltunen, Jonathan Stewart, Madan Karkee, Vladimir Sokolov Mar 2001

General Report — Session 3: Engineering Seismology And Local Site Effects, Ronald C. Chaney, Dennis Hiltunen, Jonathan Stewart, Madan Karkee, Vladimir Sokolov

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 8: Seismic Analysis And Retrofit Of Foundations Of Bridges And Other Sub-Structures, Seismic Retrofit Projects And Procedures In California, Ronaldo Luna, Genda Chen Mar 2001

General Report — Session 8: Seismic Analysis And Retrofit Of Foundations Of Bridges And Other Sub-Structures, Seismic Retrofit Projects And Procedures In California, Ronaldo Luna, Genda Chen

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 10: Case Histories Of Geotechnical Earthquake Engineering, Failures, And Geotechnical Analysis Of Recent Earthquakes, Jonathan D. Bray, Marshall Lew, Yung-Show Fang, H. W. Yang, Masayuki Hyodo, Shigeru Tani Mar 2001

General Report — Session 10: Case Histories Of Geotechnical Earthquake Engineering, Failures, And Geotechnical Analysis Of Recent Earthquakes, Jonathan D. Bray, Marshall Lew, Yung-Show Fang, H. W. Yang, Masayuki Hyodo, Shigeru Tani

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Deep Foundations In Liquefiable Soils: Case Histories, Centrifuge Tests And Methods Of Analysis, W. D. Liam Finn, T. Thavaraj Mar 2001

Deep Foundations In Liquefiable Soils: Case Histories, Centrifuge Tests And Methods Of Analysis, W. D. Liam Finn, T. Thavaraj

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

This paper describes the performance of pile foundations in liquefied soils. Two different aspects of pile response are considered, seismic response to earthquake shaking and response to lateral spreading when the liquefied ground is sloping. The case histories show that piles can be designed economically to resist large lateral displacements and that most of the reported examples of damage from lateral spreading involve weak piles with little reinforcement which were installed to control vertical settlements and were not designed to be moment resistant. A quasi-3-D continuum method is presented for dynamic effective stress response analysis of pile groups in liquefiable …


Liquefaction Assessment And Lateral Spreading In Nantou, Taiwan, P. S. Lin, C. W. Chang, C. C. Hseih, S. Y. Lai, S. Y. Lin Mar 2001

Liquefaction Assessment And Lateral Spreading In Nantou, Taiwan, P. S. Lin, C. W. Chang, C. C. Hseih, S. Y. Lai, S. Y. Lin

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

On September 21, 1999, Taiwan was struck by an earthquake, called Chi-Chi earthquake, one of the largest in 100 years. The epicenter was located 12.5 km west of the Sun Moon Lake (Northern Latitude 23.85°) Eastern Longitude 120.78°), with focal depth of 8 km, and magnitude of Mw=7.6 (USGS). This earthquake caused heavy casualties and severe property damages around central Taiwan. It was found that this earthquake resulted in sand boiling, differential settlement on the ground and lateral spreading around part of the Maolou River bank in Nantou City. Field investigation, geological exploration and in situ tests, which …


Seismic Design Of Mixed And Hazardous Waste Landfills, Edward Kavazanjian Jr., Neven Matasovic Mar 2001

Seismic Design Of Mixed And Hazardous Waste Landfills, Edward Kavazanjian Jr., Neven Matasovic

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Due to the absence of federal criteria, seismic design and performance criteria for mixed and hazardous waste landfills are generally developed on a project-specific basis, supplemented by state and project-specific standards. In developing project-specific criteria, the federal Subtitle D standards for seismic design of municipal solid waste landfills are often used as a minimum standard for mixed and hazardous waste facilities. Seismic performance standards are also usually developed on a project-specific basis, employing either a “withstand without harmful discharge” or a “withstand without damage” performance standard, depending on the certainty of continuing aftercare. Quantitative criteria established to demonstrate compliance with …


Risk Analysis In Geotechnical And Earthquake Engineering, State-Of-The-Art Practice Of Embankment Dams, D. N. D. Hartford Mar 2001

Risk Analysis In Geotechnical And Earthquake Engineering, State-Of-The-Art Practice Of Embankment Dams, D. N. D. Hartford

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Despite a proliferation of papers on quantitative risk analysis for dams during the past twenty years, risk analysis has not found widespread application in dam safety practice. Recent experience suggests that, despite a great deal of enthusiasm in the 1990’s, the professional opinion concerning the usefulness of risk analysis in dam safety practice is almost as divided now as it was in the early 1980’s. This paper presents an account of the history and development of risk analysis ln dam safety practice in the field of geotechnical earthquake engineering since its inception in the early 1960’s to September 2000. Against …


Investigation Of Seismic Soil-Footing Interaction By Large Scale Tests And Analytical Models, Ezio Faccioli, Roberto Paolucci, Guillermo Vivero Mar 2001

Investigation Of Seismic Soil-Footing Interaction By Large Scale Tests And Analytical Models, Ezio Faccioli, Roberto Paolucci, Guillermo Vivero

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Recent experimental and analytical research on seismic behavior of shallow foundations is illustrated. The most significant results on the seismic bearing capacity of footings with pseudo-static approaches are reviewed first, including an analytical formula recently proposed for the new version of the “seismic” Eurocode 8. Afterwards, we present the salient experimental results of large-scale cyclic tests of a shallow foundation model (1m x 1m in plan) resting on a large volume of sand, with relative densities 45% and 85%, discussing them in detail. Under earthquake-like cyclic loading, with peak values close to the pseudo-static failure limit, significant permanent settlement and …


Review Of Soil And Topography Effects In The September 7, 1999 Athens (Greece) Earthquake, George D. Bouckovalas, George Kouretzis Mar 2001

Review Of Soil And Topography Effects In The September 7, 1999 Athens (Greece) Earthquake, George D. Bouckovalas, George Kouretzis

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The earthquake that hit Athens, Greece on September 7, 1999 was an unexpected disaster. It originated from a previously unknown seismotectonic structure, at about 18 km to the west of the historical center, and left behind 143 casualties, about 100,000 homeless and 100 totally collapsed buildings. On the other hand, it provided a number of reliable strong motion recordings and well-defined patterns of damage at sites with known geological and geotechnical conditions. Evaluation of this information shows that the very stiff soils of the Athens basin amplified seismic ground motion by an average of 40% compared to nearby outcropping soft …


General Report — Session 5: Stability And Displacement Performance Of Slopes, Landfills, And Earth Dams Under Earthquakes, Donald G. Anderson, Allen M. Yourman, Hormoz Modaressi, Azm S. Al-Homoud, Robert C. Lo Mar 2001

General Report — Session 5: Stability And Displacement Performance Of Slopes, Landfills, And Earth Dams Under Earthquakes, Donald G. Anderson, Allen M. Yourman, Hormoz Modaressi, Azm S. Al-Homoud, Robert C. Lo

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 11: Seismic Zonation And Microzonation, Earthquake Risk Assessment, And Earthquake Risk Management, M. S. Power, G. Estrada, S. Zlatovic, L. Matesic, F. R. Bickner, C. Cardona, F. H. Swan Mar 2001

General Report — Session 11: Seismic Zonation And Microzonation, Earthquake Risk Assessment, And Earthquake Risk Management, M. S. Power, G. Estrada, S. Zlatovic, L. Matesic, F. R. Bickner, C. Cardona, F. H. Swan

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Disclaimer, Shamsher Prakash Mar 2001

Disclaimer, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Steering Committee, Shamsher Prakash Mar 2001

Steering Committee, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Organizing Committee, Shamsher Prakash Mar 2001

Organizing Committee, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Recent Studies On Seismic Centrifuge Modeling Of Liquefaction And Its Effects On Deep Foundations, Ricardo Dobry, Tarek Abdoun Mar 2001

Recent Studies On Seismic Centrifuge Modeling Of Liquefaction And Its Effects On Deep Foundations, Ricardo Dobry, Tarek Abdoun

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The effects of liquefaction on deep foundations are very damaging and costly, and they keep recurring in many earthquakes. The first part of the paper reviews the field experience of deep foundations affected by liquefaction during earthquakes in the last few decades, as well as the main lessons learned. The second part of the paper presents results of physical modeling of deep foundations in the presence of liquefaction conducted mostly in the U.S. and Japan in the 1990’s, with emphasis on the work done by the authors and others at the 100 g-ton RPI centrifuge. Centrifuge models of instrumented single …


Dynamic Soil Properties, Seismic Downhole Arrays And Applications In Practice, Ahmed Elgamal, Tao Lai, Zhaohui Yang, Liangcai He Mar 2001

Dynamic Soil Properties, Seismic Downhole Arrays And Applications In Practice, Ahmed Elgamal, Tao Lai, Zhaohui Yang, Liangcai He

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Downhole arrays are deployed worldwide to record seismic ground response in near-surface strata. The information supplied by these arrays is increasingly becoming the basis for verification, and for development and calibration of predictive tools and design procedures. Advances __ in sensors and information technologies will further expedite this learning process, opening the door for worldwide sharing and collaboration. In this paper, the following topics are addressed: i) A summary of downhole array installations and data in the U.S. and in the Taiwan, Hualien and Lotung sites, ii) An overview of related current research efforts worldwide, iii) Downhole array system identification …


Photographic Ensemble - Soap Speakers And Special Presentations, Multiple Participants Mar 2001

Photographic Ensemble - Soap Speakers And Special Presentations, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Photographic Ensemble - Finn Symposium, Multiple Participants Mar 2001

Photographic Ensemble - Finn Symposium, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Photographic Ensemble - Speakers And Participants From Around The World, Multiple Participants Mar 2001

Photographic Ensemble - Speakers And Participants From Around The World, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Photographic Ensemble - Short Course, Multiple Participants Mar 2001

Photographic Ensemble - Short Course, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Preface, Shamsher Prakash Mar 2001

Preface, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Photographic Ensemble - Staff And Volunteers, Multiple Participants Mar 2001

Photographic Ensemble - Staff And Volunteers, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Closing Ceremonies, Shamsher Prakash Mar 2001

Closing Ceremonies, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Participants Of The Conference, Multiple Participants Mar 2001

Participants Of The Conference, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Organizing And Steering Committees Minutes, Shamsher Prakash Mar 2001

Organizing And Steering Committees Minutes, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Photographic Ensemble - Sessions In Progress, Multiple Participants Mar 2001

Photographic Ensemble - Sessions In Progress, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Participants Of Short Course, Multiple Participants Mar 2001

Participants Of Short Course, Multiple Participants

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


A Simplified Method Of Vibration Analysis Of Layered Foundation And Applications In Pavement Parameter Identification, Fuming Wang, Yigong Ji, Maotian Luan Mar 2001

A Simplified Method Of Vibration Analysis Of Layered Foundation And Applications In Pavement Parameter Identification, Fuming Wang, Yigong Ji, Maotian Luan

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

In this paper, a simplified approach based on spline semi-analytical method is proposed for dynamic response analysis of visco-elastic layered half-space foundation. For varied geometrical and physical properties, the compliance function of layered non-homogeneous foundation is studied. Then an efficient and reliable numerical procedure for back-calculating material properties of pavement through the data measured from in-situ Falling Weight Deflectometer (FWD) tests is presented. The simulation results for in-situ data show that the proposed methodology is workable and applicable.


A Continuum Model For Soil-Pile-Structure Interactions Under Earthquake Excitation, K. K. Koo, K. T. Chau, X. Yang, Y. L. Wong, S. S. Lam Mar 2001

A Continuum Model For Soil-Pile-Structure Interactions Under Earthquake Excitation, K. K. Koo, K. T. Chau, X. Yang, Y. L. Wong, S. S. Lam

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

An exact analytical method for the interaction analysis of a fully coupled soil-pile-structure system under seismic excitation is investigated in this paper. Only horizontal shaking induced by harmonic SH waves was considered. The soil mass, pile and building were all considered as elastic with hysteretic type damping. Geometrically, the soil is modeled as an elastic isotropic homogeneous continuum, and both pile and structures are simplified as beam models. The structure and piles are coupled through a rigid foundation at the ground level. Buildings of various heights in Hong Kong designed to withstand wind load were analyzed using the present model. …


Analysis And Behavior Of A Rigid Foundation Massif Under The Effect Of Vibrations (Application Of Barakan Method), Iddir Rabah, Laradi Nadir Mar 2001

Analysis And Behavior Of A Rigid Foundation Massif Under The Effect Of Vibrations (Application Of Barakan Method), Iddir Rabah, Laradi Nadir

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

This communication proposes a count mode of a rigid foundation massif frequencies, relaxing on a homogeneous soil, semi-infinite having an elastic linear behavior. Several data programs process using the finite elements method, are proposed for the dynamic analysis. Nevertheless, these programs don’t appear the physical phenomenon yielded, they depend on data introduced by the user and are applicable only for the elastic foundation massifs. The BARKAN method is an analytic one that appears the physical behavior of the different displacements and their coupling modes, the involvement of soil by its different dynamic stiffness modules, as well as a constant verification …