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Articles 61 - 90 of 358
Full-Text Articles in Geotechnical Engineering
Dynamic Response Of Mud In The Field Soil Improvement With Dynamic Drainage Consolidation, Zhangming Li, Mengdong Li, Qiang Feng
Dynamic Response Of Mud In The Field Soil Improvement With Dynamic Drainage Consolidation, Zhangming Li, Mengdong Li, Qiang Feng
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The dynamic drainage consolidation (DDC) method is a relatively new technology for soft soil improvement. The method was adopted for the improvement of the mud at a site for the construction of a highway. The in-situ monitoring on the porewater pressures and settlements of the mud were taken for understanding its field dynamic properties. The site original data on the mechanical responses of the mud under dynamic loading were obtained and analyzed. The some important phenomena on pore water pressures were observed. The settlements induced by dynamic tamping and soil fill were also observed. Some basic mechanisms on the behavior …
Evaluation Of Deformation-Strength Properties Of Volcanic Soils By Laboratory And In-Situ Testings, Tsuyoshi Asonuma, Seiichi Miura, Munetaka Mae
Evaluation Of Deformation-Strength Properties Of Volcanic Soils By Laboratory And In-Situ Testings, Tsuyoshi Asonuma, Seiichi Miura, Munetaka Mae
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The present study aims to clarify the deformation-strength properties of natural grounds consisting mainly of volcanic coarse-grained soils. Site investigations using cone penetration test (CPT), standard penetration test (SPT) and seismic cone penetration test (SCT) were performed at three sites in Hokkaido, Japan. In addition to these in-situ tests, a series of cyclic triaxial test on the undisturbed samples taken from their sites were also carried out to obtain the pseudo elastic shear modulus and damping ratio and their dependencies on strain level. From the test data, it was found that; (1) N-values obtained from SPT on crushable volcanic grounds …
Measurement Of GMax And K0 Of Saturated Clay Using Bender Elements, Bartlomiej Grolewski, Xiangwu Zeng
Measurement Of GMax And K0 Of Saturated Clay Using Bender Elements, Bartlomiej Grolewski, Xiangwu Zeng
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Recent development in the application of bender element technique has made it possible to measure Gmax, and K0 of soils under complex anisotropic loading conditions. By measuring the shear wave velocities in different shear planes, the anisotropy in Gmax, of soil induced by anisotropic loading can be determined. The shear wave velocities can also be used to calculate the horizontal earth pressure coefficient at rest K0. This paper reports an experimental setup developed at the Department of Civil Engineering, University of Kentucky, which uses bender elements to measure shear wave velocities in four …
An Experimental Study To Assess The Shear Modulus Degradation By Fatigue Of Mexico City Clay, Víctor M. Taboada-Urtuzuástegui, Miguel P. Romo
An Experimental Study To Assess The Shear Modulus Degradation By Fatigue Of Mexico City Clay, Víctor M. Taboada-Urtuzuástegui, Miguel P. Romo
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
In this research, the degradation by fatigue of Mexico City clay is studied using a triaxial equipment where the cyclic stress amplitude was maintained constant during the experiment. The variables considered in the study were the following: state of the soil, effective mean confining stress, magnitude of cyclic stress and number of loading cycles. Undisturbed samples, anisotropically and isotropically consolidated, were subjected to cyclic loading for this purpose. When analyzing the cyclic stress-strain response with the number of cycles a threshold of permanent deformation in function of the cyclic deviator stress and axial strain was found. When the cyclic strain …
Evaluation Nonlinear Soil Response In Situ, Ellen M. Rathje, Ryan D. Phillips, Wen-Jong Chang, Kenneth H. Stokoe Ii
Evaluation Nonlinear Soil Response In Situ, Ellen M. Rathje, Ryan D. Phillips, Wen-Jong Chang, Kenneth H. Stokoe Ii
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Evaluation of nonlinear soil properties is an important concern in geotechnical earthquake engineering. Typically, nonlinear properties are expressed in terms of the nonlinear reduction in shear and constrained moduli with strain and the nonlinear increase in material damping in shear and constrained compression with strain. At this time, there is essentially total dependency on laboratory testing to evaluate nonlinear soil properties. The accuracy and limitations involved in modeling in situ properties with laboratory evaluated properties remains to be studied. In an attempt to evaluate nonlinear soil properties directly in the field, an in situ test method is being developed at …
Compressibility Of Liquefied Sand, Yasushi Sasaki, Jun Ohbayashi, Yoshiaki Ogata
Compressibility Of Liquefied Sand, Yasushi Sasaki, Jun Ohbayashi, Yoshiaki Ogata
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Laboratory measurement using CCD camera was conducted to trace the sedimentation process of sand grains in a liquefied model layer. The purpose of this measurement was basically intended to obtain a visual evidence of appearance of suspended state in upper part of the liquefied soil. For this purpose, glass bead particles were used as model ground material. The test results prevailed that the glass bead grains were suspended in pore water at the instant when complete liquefaction was brought about to the layer, then they began to settle in the water. The measured pore water kept high value until grains …
Dynamic Behavior Of Tailings, O. Flores C., M. P. Romo O.
Dynamic Behavior Of Tailings, O. Flores C., M. P. Romo O.
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This article presents results of samples tested on a resonant column apparatus. The samples were formed of soil coming from mining residues (tailings), the testing program makes emphasis in the variables that influence the behavior. Finally, the interpretation of the results is made with a knowledge-based procedure and a Masing type model.
The Modelling Of Free Field Traffic Induced Vibrations By Means Of A Dynamic Soil-Structure Interaction Approach, G. Lombaert, G. Degrande
The Modelling Of Free Field Traffic Induced Vibrations By Means Of A Dynamic Soil-Structure Interaction Approach, G. Lombaert, G. Degrande
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper deals with the numerical modelling of free field traffic induced vibrations during the passage of a vehicle on an uneven road. The road unevenness subjects the vehicle to vertical oscillations that cause dynamic axle loads. A simple 2D vehicle model is used for the calculation of the axle loads from the longitudinal road profile. The free field soil response is calculated with the dynamic Betti-Rayleigh reciprocity theorem, using a transfer function between the road and the receiver that accounts for dynamic road-soil interaction. The calculation of the transfer function is based on a dynamic substructure method with a …
Liquefaction Potential Of Railway Embankments, Miguel A. Pando, C. Guney Olgun, James R. Martin Ii
Liquefaction Potential Of Railway Embankments, Miguel A. Pando, C. Guney Olgun, James R. Martin Ii
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper presents an overview of the nature of train-induced vibrations and discusses the liquefaction potential of railway embankments under such low-level vibrations. The paper also presents the results of static and dynamic finite difference numerical analyses performed for a simple railway embankment geometry. The liquefaction potential for the railway embankment foundation was estimated using the results corn FLAC numerical analyses, as well as a cyclic shear stress liquefaction resistance approach using a modified cyclic resistance ratio curve. Liquefaction of railway embankment foundations was found to be possible. However, based on the majority of reported failures the liquefaction potential remains …
Response Of Circular Foundation Subjected To Dynamic Forces In Sandy Soils, M. K. Uddin
Response Of Circular Foundation Subjected To Dynamic Forces In Sandy Soils, M. K. Uddin
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
In a machine-foundation soil system, the frequency and amplitude have to be controlled by suitable means such as by balancing of dynamic loads or using suitable foundation. The dynamic forces can be transmitted to the soil through the foundation by appropriate selection of foundation mass or by using damping. This paper is the outcome of a research study conducted recently to investigate dynamic response of circular foundation in sandy soils. The paper concentrates on dynamic behavior for circular foundation with cap-anchor made of reinforced cement concrete. The influence of increase of base diameter of cap-anchor foundation on resonant frequency and …
An Experimental Investigation On Trench Isolation Techniques For Vibration Control, E. Saibaba Reddy, K. Rama Sastri, M. Abishekar Paul
An Experimental Investigation On Trench Isolation Techniques For Vibration Control, E. Saibaba Reddy, K. Rama Sastri, M. Abishekar Paul
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
One of the methods of controlling vibration amplitudes at source is by adopting active isolation techniques. Trench barriers are identified as methods of isolation. This paper deals with series experimental investigation carried out on block vibration tests with active isolation trench barriers. The parameters like depth of embedment, dimensions of trench, fill material in trench etc., are studied by carrying out the block vibration test in field. The results are analysed to identify the influence of those parameters.
Uncertainties And Residuals In Ground Motion Estimates At Soil Sites, Jonathan P. Stewart, Mehmet B. Baturay
Uncertainties And Residuals In Ground Motion Estimates At Soil Sites, Jonathan P. Stewart, Mehmet B. Baturay
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
For a given seismic source, ground motions at soil sites can be estimated using either soil attenuation relationships, or ground response analyses with input motions scaled to match spectral ordinates from rock attenuation relationships. Ground response analyses are performed with the expectation that accounting for nonlinear sediment response improves the accuracy and reduces the uncertainty in estimated motions. Discussed here are the benefits of ground response analyses as a function of site condition. This is accomplished by preparing statistical predictions of ground motions at 36 strong motion recording sites on soil. Two predictions are made, one using a modified soil …
Nonlinear Site Response During The 7 September 1999 Athens, Greece, Earthquake (MW 5.6), P. Dimitriu, A. Anastasiadis, N. Theodulidis, N. Klimis
Nonlinear Site Response During The 7 September 1999 Athens, Greece, Earthquake (MW 5.6), P. Dimitriu, A. Anastasiadis, N. Theodulidis, N. Klimis
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The largest available strong-motion recording (PGA=0.35g), least affected by topography, structural response and/or soil-structure interaction, is investigated for possible nonlinear site response during the M, 5.9 Athens earthquake of 7 September 1999. Smoothed horizontal-to-vertical spectral ratios (HVSR) are calculated in subsequent overlapping 3.5-s windows, thus covering a wide range of excitation levels. Mean HVSR curves are computed for a so-called “weak-“ and “strong-“ motion range (mean horizontal ground acceleration in window, MGA<=10.2 cm/s/s and >=20.5 cm/s/s). The two curves have similar shape, with the “strong” curve visibly shifted toward lower frequencies relative to the “weak” one; the dominant site resonance occurs at …
3d Fern Analysis Of Ground Vibration Measures For Stationary And Moving Transit Source, Lindita Kellezi, Niels Foged
3d Fern Analysis Of Ground Vibration Measures For Stationary And Moving Transit Source, Lindita Kellezi, Niels Foged
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Ground Vibration Measures are often employed to reduce through-soil, road or railway traffic-induced disturbances or ground vibrations caused from machine foundations. This kind of problem is sometimes a major concern in densely populated urban areas situated at soft soil conditions and for structures operating sensitive equipments. In this paper a full three-dimensional (3D) FEM investigation of the effectiveness of vertical, rectangular cross-section, wave barriers (open trenches and concrete walls) in reducing ground vibrations is carried out. The reduction capacity of these measures is also compared with an array of concrete piles or sheet piles, which replaces them. The analysis considers …
Influence Of Earthquake Source Parameters And Damping On Elastic Response Spectra, Mohsen Tehranizadeh, Farzaneh Hamedi
Influence Of Earthquake Source Parameters And Damping On Elastic Response Spectra, Mohsen Tehranizadeh, Farzaneh Hamedi
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
In this paper the influence of effective duration of strong motion, soil condition, magnitude and shape of accelerogram time history on elastic response spectra have been investigated. A total of 106 Iran’s horizontal acceleration components strong motion records are selected. These accelerograms are categorized in accordance with their earthquake parameters and soil condition of recording station and the influence of different soil conditions are plotted in graphs. The influence of damping ratio on the response spectra is also investigated. Analytical results show that the influence of soil condition is very significant on the shape of response spectra. The influence of …
Seismic Response On Dense And Loose Sand Columns, Korhan Adalier, Ahmed-W. Elgamal
Seismic Response On Dense And Loose Sand Columns, Korhan Adalier, Ahmed-W. Elgamal
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Densification (Compaction) of loose saturated soils has been the most popular method of reducing earthquake related liquefaction potential. Compaction of a foundation soil can be economical when limited in extent, leading to a case of an “island” of improved ground (surrounded by unimproved ground). The behavior of the densified sand surrounded by liquefied loose sand during and following earthquakes is of great importance in order to design the compacted area rationally and optimize both safety and economy. This problem is studied herein by means of dynamic centrifuge model tests. The results of two heavily instrumented-dynamic centrifuge tests on glycerin-water saturated …
Seismic Amplification Of Typical New York City Soil Profiles, Sissy Nikolaou, Peter Edinger
Seismic Amplification Of Typical New York City Soil Profiles, Sissy Nikolaou, Peter Edinger
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Amplification studies for New York City (NYC) soil sites are summarized herein. Ten (10) typical soil profiles from Brooklyn, Queens, and Manhattan, are analyzed using one-dimensional SHAKE methods. Dynamic soil properties are derived using state-of-practice correlations with standard penetration resistance and compared to available in-situ geophysical measurements. Three different rock motions are utilized, each modified from real records to match 500- and 2500-year probabilistic spectra. Results are presented in terms of dimensionless ratios of response spectra (RRS) and surface response spectra. The effect of the impedance contrast between soil and rock on soil amplification is examined. It is shown that …
Post-Liquefaction Pore Pressure Dissipation And Densification In Silty Soils, S. Thevanayagam, G. R. Martin, T, Shenthan, J. Liang
Post-Liquefaction Pore Pressure Dissipation And Densification In Silty Soils, S. Thevanayagam, G. R. Martin, T, Shenthan, J. Liang
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Pore pressure generation, and post-liquefaction dissipation and densification characteristics are data essential for detailed analysis of performance of sites containing liquefiable sands during and after earthquakes. These characteristics are also necessary for the design, analysis and choice of appropriate ground modification systems to mitigate liquefaction-induced hazards. Past research has addressed such material characteristics for clean sands. However, there are many sites that comprise non-plastic silts or silty sands have experienced liquefaction-induced damage. This paper presents results from an experimental study on silts and silty sands. Pore pressure generation characteristics are evaluated and compared with that of sands. Pre- and post-liquefaction …
Seismic Liquefaction Assessment For The Jfk Light Rail System Project, Fathey N. Elsaid
Seismic Liquefaction Assessment For The Jfk Light Rail System Project, Fathey N. Elsaid
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A procedure to evaluate seismic liquefaction potential based on ground response analysis and in-situ characteristics of the soil deposits is developed. This procedure uses the correlation between the Standard Penetration Test (SPT) N60 blow-counts, and the shear wave velocities to establish Shear Wave Velocity (SWV) profiles. The SWV profiles along with soil properties from the subswface investigation, and the design earthquake time history are then used to perform seismic response analysis for the stratified soil deposits. Cyclic Stress Ratio (CSR) profiles are determined from maximum earthquake induced shear stress profiles, based on seismic response analysis, and effective overburden pressures. …
Seismic Evaluation And Remediation Of Embankment Dam, Nasim Uddin, J. F. Baltz
Seismic Evaluation And Remediation Of Embankment Dam, Nasim Uddin, J. F. Baltz
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The seismic stability of the Croton Dam left embankment, was evaluated for potential earthquake ground motions. Field and laboratory test results were used to characterize the static and dynamic properties of the embankment and foundation materials. Results showed liquefaction and strength loss in certain zones of the embankment resulting in large deformation of the slope. Remediation of these areas of the dam was necessary. Various techniques were evaluated including drainage, construction of a berm at toe, vibro-grouted stone columns and compaction grouting. Compaction grouting was selected.
Numerical Analysis For Seismic Behavior Of A Slope Based On A Simple Cyclic Loading Model, Akihiko Wakai, Keizo Ugai, Masayoshi Sato, Takashi Tazo
Numerical Analysis For Seismic Behavior Of A Slope Based On A Simple Cyclic Loading Model, Akihiko Wakai, Keizo Ugai, Masayoshi Sato, Takashi Tazo
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A finite element simulation for dynamic centrifuge test of a slope is presented. The horizontal acceleration was applied to the base of the ground, and the response of the slope was measured. The residual deformation, accompanied with a clear slip surface, was observed after the testing. The main objective of this study is to investigate the validity of a new cyclic loading model, based on the strength parameters c - φ, and the G – γ, h - γ relationships. These features are thought to be very useful for practical usage.
3-D Dynamic Analysis Of Taiyuan Fly Ash Dam, Jian Zhou, Yong Chi, Peijiang Qi
3-D Dynamic Analysis Of Taiyuan Fly Ash Dam, Jian Zhou, Yong Chi, Peijiang Qi
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
In this paper, the seismic stability of Taiyuan Fly Ash Dam in China is studied by using 3-D dynamic effective stress analysis method. The acceleration, dynamic shear stress and pore water pressure in the fly ash dam are calculated and the analysis of the seismic stability of the dam considering the seismic pore water pressure is given for different height of the dam.
Study On Earthquake-Induced Permanent Deformation Of Earth-Rockfill Dams, Jian-Ming Zhao, Wen-Shao Wang
Study On Earthquake-Induced Permanent Deformation Of Earth-Rockfill Dams, Jian-Ming Zhao, Wen-Shao Wang
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Based on the experimental data, a three-dimensional (3-D) nonlinear effective stress seismic response analysis method of earth-rockfill dams is proposed with the dissipation and diffusion of seismic pore-water pressure been considered. Then a method for evaluating the earthquake-induced permanent deformation of earth-rockfill dams taking into account both residual shear strain and residual volumetric strain is presented. The method proposed by Taniguchi is adopted to evaluate the earthquake-induced permanent deformation caused by residual shear strain. In order to evaluate the earthquake-induced permanent deformation caused by residual volumetric strain, the saturated part and the non-saturated part of the dams are treated separately. …
Shaking Table Experiment Of A Model Slope Subjected To A Pair Of Repeated Ground Motions, Joseph Wartman, Jonathan D. Bray, Raymond B. Seed
Shaking Table Experiment Of A Model Slope Subjected To A Pair Of Repeated Ground Motions, Joseph Wartman, Jonathan D. Bray, Raymond B. Seed
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper describes the third of a series of six shaking table experiments conducted as part of ongoing research to evaluate the accuracy and applicability of the Newmark (1965) procedure for computing seismically induced deformation in slopes. A cohesive model slope was shaken by two identical test motions in succession, mimicking a situation that commonly occurs when a preexisting landslide is subjected to strong earthquake shaking. Back analyses of the tests showed that the Newmark (1965) formulation provided moderately accurate estimates of the measured permanent deformations (within 40% to 85% of the maximum measured displacement). The accuracy of the Newmark …
Is Newmark Method Conservative?, Mohsen Beikae
Is Newmark Method Conservative?, Mohsen Beikae
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Newmark method is a commonly accepted practice in geotechnical earthquake engineering to estimate seismically induced displacement of earth structures. The method currently requires performing a series of analyses using multiple computer programs to 1) identify a potential sliding mass, 2) compute a factor of safety, 3) calculate a yield acceleration, and 4) perform a double integration of that portion of a given horizontal acceleration history that exceeds the yield acceleration. The Newmark method provides satisfactory results for a horizontal sliding surface. However, for an inclined sliding surface the result is unconservative and for a nonplanar one is not clear. To …
Dynamic Response Of Dam-Layer System To Earthquake Excitations, Sarada K. Sarma, George Cossenas
Dynamic Response Of Dam-Layer System To Earthquake Excitations, Sarada K. Sarma, George Cossenas
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
An extensive database of ‘free-field’ strong motion records, from rock sites all over the world, of significant strong motion (peak ground acceleration ≥ 0.1 g) has been utilised to identify the dynamic characteristics of a typical dam-layer system. Linear elastic analysis is used to calculate the response of the dam and spectra of average seismic coefficients are presented. Attenuation relationships for the response accelerations along the height of the dam are also presented and the two methods are compared. A rigid-block model is used to calculate the earthquake-induced displacements on the body of the dam, to be used as a …
Study Of Seismically Induced Landslide Zones, Related To Chamoli Earthquake Of 1999, Garhwal Himalaya, India, H. C. Nainwal, Ajay K. Naithani
Study Of Seismically Induced Landslide Zones, Related To Chamoli Earthquake Of 1999, Garhwal Himalaya, India, H. C. Nainwal, Ajay K. Naithani
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Landslides are very common in the seismically prone areas of the Garhwal Himalaya. A seismic activity involves displacement either in vertical or horizontal direction and such displacements create slope failure by mass wastings. The maximum impact of Chamoli earthquake was experienced, in the zones of intersection of tear faults with the Main Central Thrust (MCT). During this earthquake large-scale landslides and subsidence caused destruction of many villages located over the hillside slopes. On the basis of field survey pre and post earthquake IRS IC/ID (LISS III/PAN) images, more than 100 slides have been identified in addition to the reactivation of …
Computational Simulation Procedure For Soil-Structure Interaction Modeling In Building Seismic Damage Response, Ismail M. Ismail, Chris Mullen
Computational Simulation Procedure For Soil-Structure Interaction Modeling In Building Seismic Damage Response, Ismail M. Ismail, Chris Mullen
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
A finite element based computational procedure is presented for soil-structure interaction modeling in building seismic response. Attention is focused on a combination of contact surfaces at the soil-foundation interface, nonlinear soil material and infinite elements as transmitting boundary conditions. A rationale for efficient mesh design is offered for the building/foundation/soil system model based on computational wave propagation studies using infinite elements. As a the proposed procedure, a comparison is made between results of eigen mode analysis of two models for a 3-story office building, with the conventional treatment of the foundation and soil as discrete linear springs [3], and …
Design Concept For High Speed Railway Bridges In Regions With High Seismic Activity And Soft Soil, Oliver Fischer, Andreas Maurial, Konstantin Meskouris, Carsten Könke, Falko Schube
Design Concept For High Speed Railway Bridges In Regions With High Seismic Activity And Soft Soil, Oliver Fischer, Andreas Maurial, Konstantin Meskouris, Carsten Könke, Falko Schube
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
At present, public transport for mid distances is more and more covered by modern high speed railway links with many examples all over the world being already under construction or in the design process. In case of soft soil conditions or urban areas, many of these projects are being realized as an elevated railway structure utilizing regular viaducts. In seismic active regions earthquake design mainly governs the overall design concept of the bridges, particularly of the piers and foundations. Thus, on the one hand, the structure has to exhibit enough stiffness under serviceability conditions (limitation of rail stresses; safety requirements …
Dynamic Soil-Foundation-Structure Interaction Analyses Of Large Caissons, C.-Y. Chang, Chin-Man Mok, Z.-L. Wang, R. Settgast, C.-C. Chin, H. M. Gonnermann, F. Waggoner, M. A. Ketchum
Dynamic Soil-Foundation-Structure Interaction Analyses Of Large Caissons, C.-Y. Chang, Chin-Man Mok, Z.-L. Wang, R. Settgast, C.-C. Chin, H. M. Gonnermann, F. Waggoner, M. A. Ketchum
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Large cellular reinforced concrete caissons exist as foundations of major long-span bridges across waterways in many parts of the country. This study was conducted to evaluate the important factors affecting the seismic response of large caissons. The paper presents the results of equivalent linear and non-linear analyses performed for a typical caisson idealized based on the cellular caisson at Pier W3 of the West San Francisco Bay Bridge subject to ground motion with a peak rock acceleration of 0.6 g. This caisson is 38.7 m (127 fi) long by 22.9 m (75 ft) wide submerged in about 32.6 m (107 …