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Full-Text Articles in Geotechnical Engineering
Ground Motions From The Northridge Earthquake, Susan W. Chang, Jonathan D. Bray, Raymond B. Seed
Ground Motions From The Northridge Earthquake, Susan W. Chang, Jonathan D. Bray, Raymond B. Seed
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The magnitude, duration and frequency content of ground motions from the Northridge Earthquake are analyzed and compared to predictive relationships typically used in engineering design and to the 1994 Uniform Building Code. The effect of geologic conditions on localized damage patterns is shown to be important for this earthquake, even though many of the sites within the affected region are stiff soil sites classified as UBC sites S1 or S2.
Significance Of The Velacs Project To The Solution Of Boundary Value Problems In Geotechnical Engineering, K. Arulanandan, M. Manzari, X. Zeng, M. Fagan, R. F. Scott, T. S. Tan
Significance Of The Velacs Project To The Solution Of Boundary Value Problems In Geotechnical Engineering, K. Arulanandan, M. Manzari, X. Zeng, M. Fagan, R. F. Scott, T. S. Tan
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The VELACS project was conducted in order to improve existing methods for the analysis of the consequences of soil liquefaction. The project showed that centrifuge studies are repeatable only under carefully controlled conditions. Most procedures were able to predict the onset of liquefaction in contractive soils, but only effective stress based fully coupled nonlinear procedures were able to predict deformations due to liquefaction· None of the currently available procedures could simulate the behavior of dilative soils adequately. Problems were attributed to improper constitutive model implementation and inadequate calibration. An example to evaluate the behavior of a flow slide observed in …
Deformation Characteristics Of Soils And Soft Rocks Under Monotonic And Cyclic Loads And Their Relationships, Fumio Tatsuoka, Diego Lo Presti, Yukihiro Kohata
Deformation Characteristics Of Soils And Soft Rocks Under Monotonic And Cyclic Loads And Their Relationships, Fumio Tatsuoka, Diego Lo Presti, Yukihiro Kohata
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
For a wide variety of geomaterials, cohesionless and cohesive soils and sedimentary soft rocks and cement-mixed soils, the importance and advantages of measuring the deformation characteristics accurately and continuously for a strain range from less than 0.001 % to several % by a single static test using a single specimen are demonstrated. It is also shown that the deformation characteristics at strains of less than about 0.001 % is essentially elastic and the elastic stiffness values evaluated under static (monotonic and cyclic) and dynamic (fast cyclic) loading conditions are the same from the engineering point of view. It is discussed …
The Evolution Of Geotechnical Earthquake Engineering Practice In North America: 1954-1994, W. D. Liam Finn, R. H. Ledbetter, W. F. Marcuson Iii
The Evolution Of Geotechnical Earthquake Engineering Practice In North America: 1954-1994, W. D. Liam Finn, R. H. Ledbetter, W. F. Marcuson Iii
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper traces the evolution of geotechnical earthquake engineering practice in North America from 1954 to 1994. The development of the state-of-the-art has been shaped strongly by four areas of practice: assessment of seismic hazard, estimation of liquefaction potential, seismic response analysis of earth structures and seismic safety evaluation and remediation of existing dams with potentially liquefiable zones. Evolution of practice in each of these areas will be traced and the current state-of-the-art evaluated. Present capabilities in practice will be illustrated by examples from the areas of seismic response of dams, liquefaction potential and seismic safety evaluation and remediation of …
Liquefaction-Induced Lateral Ground Displacement, T. Leslie Youd
Liquefaction-Induced Lateral Ground Displacement, T. Leslie Youd
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Ground displacements generated by liquefaction-induced lateral spread are a severe threat to engineered construction. During past earthquakes, lateral spread displacements have pulled apart or sheared shallow and deep foundations of buildings, severed pipelines and other structures and utilities that transect the ground displacement zone, buckled bridges or other structures constructed across the toe, and toppled retaining walls, bulkheads, etc. that lie in the path of the spreading ground. This paper presents a method for estimating probable free-field lateral displacements at sites susceptible to liquefaction. Free-field ground displacements are those that are not impeded by structural resistance, ground modification, or a …
Recent Advances In Centrifuge Modeling Of Seismic Shaking, Bruce L. Kutter
Recent Advances In Centrifuge Modeling Of Seismic Shaking, Bruce L. Kutter
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This "State-of-the-Art" paper focuses primarily on aspects of dynamic centrifuge modeling related to simulation of earthquake effects. New shaker mechanisms and model containers are described and soil- container-shaker interaction is discussed. Progress in dealing with scale effects such as particle size, rate dependent material properties and conflicts in dissipation and generation time scale factors is also described. Issues related to repeatability and value of model testing are also discussed.
Liquefaction And Deformation Of Soils And Foundations Under Seismic Conditions, Ricardo Dobry
Liquefaction And Deformation Of Soils And Foundations Under Seismic Conditions, Ricardo Dobry
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A summary of significant developments in seismic liquefaction research and applications is presented for the period 1985-1995. It is concluded that rapid progress is being made, especially in evaluating ground deformation and straining and their effects on constructed facilities. Four topics illustrating these developments are selected and discussed in more detail.
Design And Behavior Of Tailings Dams Under Seismic Conditions, Jorge H. Troncoso
Design And Behavior Of Tailings Dams Under Seismic Conditions, Jorge H. Troncoso
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Seismic design of tailings dams in present times has to provide satisfactory solutions to fulfill environmental protection requirements and to assure proper behavior after closure and abandonment. The requirements to protect the environment include control of seepage and other forms of pollution of the air, waters and soils, under normal conditions, and also under the most extreme events which may be foreseen to occur. The worst possible form of pollution under such extreme conditions is a liquefaction failure involving breaching of the dam and flooding of the valleys downstream. The probability of occurrence of maximum events obviously increases with the …
Role Of In-Situ Testing In Geotechnical Earthquake Engineering, M. Jamiolkowski, D.C. F. Lopresti, O. Pallara
Role Of In-Situ Testing In Geotechnical Earthquake Engineering, M. Jamiolkowski, D.C. F. Lopresti, O. Pallara
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The available in situ testing techniques of special relevance in Geotechnical Earthquake Engineering are subject to a synthetic review in the light of the general framework of soil stress-strain behavior. Especial attention is devoted to the recent innovations and current capabilities of in situ testing methods to assess the shear modulus G and damping ratio D. The determination of the undrained steady state shear strength via penetration and seismic tests is also discussed.
Simple Methods For The Seismic Response Of Piles Applied To Soil-Pile-Bridge Interaction, George Gazetas, George Mylonakis, Aspasia Nikolaou
Simple Methods For The Seismic Response Of Piles Applied To Soil-Pile-Bridge Interaction, George Gazetas, George Mylonakis, Aspasia Nikolaou
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A multi-step procedure is outlined for a complete seismic soil-pile-structure interaction analysis, within the format of kinematic and inertial decomposition. Vertical S-wave propagation is considered and the pile-to-pile interplay is treated with sufficient rigor. The method has been implemented for the seismic analysis of bridge piers founded on piles in multilayered soil; a computer code (SBIAP) has been developed to this end. A parameter study (in both frequency and tune domains) illustrates the capability of the method to predict displacements and accelerations of the superstructure as well as bending moments and shear and axial forces in the piles. The importance …
Dynamic Soil Pressures On Vertical Walls, Anestis S. Veletsos, Adel H. Younan
Dynamic Soil Pressures On Vertical Walls, Anestis S. Veletsos, Adel H. Younan
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A summary is presented of recently contributed simple approximate solutions for the dynamic pressures and the associated forces induced by ground shaking on rigid vertical walls. The walls are presumed to be either straight or circular in plan and to retain a uniform viscoelastic soil stratum of constant thickness and infinite extent in the horizontal direction. Both the walls and the stratum are considered to be supported on a non-deformable base undergoing a space-invariant, uniform horizontal motion. The effects of both harmonic and earthquake-induced excitations are examined, and comprehensive numerical data ate presented which elucidate the underlying response mechanisms and …
Discussions And Replies — State-Of-The-Art, Multiple Authors
Discussions And Replies — State-Of-The-Art, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Author And Discussor Index Volumes I, Ii, Iii, Multiple Authors
Author And Discussor Index Volumes I, Ii, Iii, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Damage To Railway Structures, Fumio Tatsuoka
Damage To Railway Structures, Fumio Tatsuoka
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A vast amount of railway structures were seriously damaged, which includes RC frame structures supporting elevated railway tracks, RC station structures, embankments, and retaining walls. A length of underground RC box structures of subways, constructed by the cut-and-cover method, was also seriously damaged.
Soil Amplification In Great Hanshin Earthquake, Takeji Kokusho, Kiyotaka Sato
Soil Amplification In Great Hanshin Earthquake, Takeji Kokusho, Kiyotaka Sato
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
During this earthquake, strong acceleration records were obtained in free fields in many sites in and around the Kobe city. Some of the recording sites consist of multi-level vertical arrays, which demonstrated very peculiar features of seismic amplification in reclaimed lands and Holocene and Pleistocene soil layers. Particularly it has been found that, when the max acceleration at the depth of 80-100m exceeds 200-300 cm/s2, the upper layer will not amplify the acceleration anymore except for the shallowest layer in most case.
Distribution Of Structural Damage In Nishinomiya City And The Eastward Suffered From The Great Hanshin (Hyogoken Nanbu) Earthquake Of January 16, 1995, Kensuke Baba
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A powerful earthquake was caused in the northern region of the Awajishima Island, Japan, on 16 January 1995, and many human lives, structures and facilities suffered fatal damage from the seismic motions in the Hanshin' (Osaka-Kobe) region. The epicenter was located 20 kilometers below the ground surface and the seismic magnitude was 7.2 on Japan Meteorological scale. The aftershocks have been observed in a slender zone oriented to the northeast and stretching to a northern limit on the west-east trending Arima-Takatsuki fault line, which is analogous to the geological area accompanied with the tectonic collapse (Fig. 1).
General Report —Session Iii: Liquefaction And Ground Failure, Susumu Iai, R. H. Ledbetter, L. Figueroa, K. K. Muraleetharan, S. Yasuda
General Report —Session Iii: Liquefaction And Ground Failure, Susumu Iai, R. H. Ledbetter, L. Figueroa, K. K. Muraleetharan, S. Yasuda
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report —Session Iv: Dynamic Earth Pressures And Seismic Design Of Earth Retaining Structures, Forrokh Nadim, S. Ihara, A. Pecker, E. A. Rafnsson
General Report —Session Iv: Dynamic Earth Pressures And Seismic Design Of Earth Retaining Structures, Forrokh Nadim, S. Ihara, A. Pecker, E. A. Rafnsson
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report —Session V: Soil Structure Interaction Under Dynamic Loading, A. H. Hadjian, T. Kobori, J. E. Luco, S. A. Savidis, Alex Sy
General Report —Session V: Soil Structure Interaction Under Dynamic Loading, A. H. Hadjian, T. Kobori, J. E. Luco, S. A. Savidis, Alex Sy
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report—Session Vi: Stability Of Slopes And Earth Dams Under Earthquakes, Pedro Simao Seco E Pinto, Leslie Harder, Panos C. Dakoulas, Ashok Chugh, Hiroyuki Watanabe
General Report—Session Vi: Stability Of Slopes And Earth Dams Under Earthquakes, Pedro Simao Seco E Pinto, Leslie Harder, Panos C. Dakoulas, Ashok Chugh, Hiroyuki Watanabe
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report— Session Vii: Soil Amplification During Earthquakes And Microzonation, Mehmet Celebi, G. R. Saragoni
General Report— Session Vii: Soil Amplification During Earthquakes And Microzonation, Mehmet Celebi, G. R. Saragoni
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report —Session Viii: Seismology: Predicting Strong Ground Motion For Design, Bagher Mohammadioun, D. M. Rosa, M. I. Todorouska, Z. P. Liao
General Report —Session Viii: Seismology: Predicting Strong Ground Motion For Design, Bagher Mohammadioun, D. M. Rosa, M. I. Todorouska, Z. P. Liao
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report —Session X: Wave Propagation In Soils, J. M. Roesset, G. Sanatana, I. S. Salinero
General Report —Session X: Wave Propagation In Soils, J. M. Roesset, G. Sanatana, I. S. Salinero
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session Xii: Machine Foundations And Model Tests, Vijay K. Puri, Toyoaki Nogami, Amir Kaynia
General Report — Session Xii: Machine Foundations And Model Tests, Vijay K. Puri, Toyoaki Nogami, Amir Kaynia
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Committees, Multiple Members
Committees, Multiple Members
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Conference Schedule, Multiple Authors
Conference Schedule, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Welcoming Remarks, Shamsher Prakash
Welcoming Remarks, Shamsher Prakash
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
List Of Participants, Multiple Participants
List Of Participants, Multiple Participants
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Three-Dimensional Cyclic Behaviour Of Interfaces, E. Evgin, K. Fakharian
Three-Dimensional Cyclic Behaviour Of Interfaces, E. Evgin, K. Fakharian
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A new apparatus is used to study the behavior of an interface between dry sand and a rough surface under three dimensional cyclic loading conditions. A simple shear type of soil container is utilized in the experiments to investigate the coupling effects of two orthogonal shear stresses acting on the interface. The significance of the results are discussed with reference to the behavior of axially-laterally loaded piles.
Dynamic Characteristics Of Comares Palace In The Alhambra, V. Cuellar, E. Kausel, J. L. Monte, J. M. Roesset, J. Valerio
Dynamic Characteristics Of Comares Palace In The Alhambra, V. Cuellar, E. Kausel, J. L. Monte, J. M. Roesset, J. Valerio
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper describes the geotechnical investigations that have been conducted to characterize the static and dynamic properties of the ground, the foundation and the structure's material of the Comares tower in the Alhambra palace. The Gmax values of the different materials were determined using seismic refraction, P-wave transmission tomography, cross-hole and down-hole tests. To obtain the variation of the shear moduli with strain amplitude surface wave and cyclic horizontal plate loading tests were performed in several trenches excavated in the immediate neighborhood. The analysis of the structure response to M = 5 earthquakes recently recorded at the top and …