Showing papers in "Soil Dynamics and Earthquake Engineering in 2013"

TL;DR: In this paper, a series of laboratory tests were conducted in which a scaled model wind turbine supported on a monopile in kaolin clay was subjected to between 32,000 and 172,000 cycles of horizontal loading and the changes in natural frequency and damping of the model were monitored.

TL;DR: In this article, a three dimensional numerical model is presented capable of modelling the propagation and transmission of ground vibration in the vicinity of high speed railways, which is used to investigate the effect of embankment constituent material on ground borne vibration levels at various distances from the track.

TL;DR: In this paper, a series of monotonic triaxial tests and long-term cyclic (50,000 cycles) TRIAXial tests have been carried out to investigate the undrained deformation behavior of undisturbed soft clay from Wenzhou, China.

TL;DR: In this paper, a series of small scaled tests (1:100, 1:150 and 1:200) of a complete National Renewable Energy Laboratory (NREL) wind turbine model on three types of foundations: monopiles, symmetric tetrapod and asymmetric tripods were applied.

TL;DR: In this article, the behavior of calcareous sand located in the North Coast of Egypt, Dabaa area, under static and cyclic loading was studied through a series of monotonic cyclic undrained triaxial tests conducted on two relative densities and different effective confining pressures.

TL;DR: In this paper, a new damage classification criterion was proposed to classify and quantify tunnel damage based on data collected from major earthquakes, including seismic parameters, structural information, and ground conditions.

TL;DR: In this article, the authors evaluated the impact of near-fault ground motion effects on nonlinear dynamic response and seismic damage of concrete gravity dams including dam-reservoir-foundation interaction.

TL;DR: In this paper, the authors investigated the optimized parameters for tuned mass dampers (TMDs) to decrease the earthquake vibrations of tall buildings; involving soil-structure interaction (SSI) effects.

TL;DR: In this article, a sand plasticity model for geotechnical earthquake engineering applications is presented, which is based on the basic framework of the stress-ratio controlled critical state compatible, bounding surface model for sand presented by Dafalias and Manzari.

TL;DR: In this article, a modified form of Bath's law and NGA ground motion prediction equation is proposed to simulate the mainshock-aftershock sequence-type ground motions with Park-Ang damage index.

TL;DR: In this paper, the response of surface foundations to large overturning moments is studied under undrained conditions, with the soil modeled as an inelastic homogeneous deposit, characterized by an elastic (small-strain) shear modulus G o, an undrained shear strength S u, and a G/G o versus γ curve appropriate for medium-plasticity clays.

TL;DR: In this paper, the authors investigated the effects and potential of aftershocks on the accumulated damage of concrete gravity dams, and they found that the as-recorded sequences of ground motions have a significant effect on the accumulation of accumulated damage and on the design of concrete dams.

TL;DR: In this article, the experimental results from two geotechnical centrifuge tests examining seismic soil-foundation-structure interaction of frame structures are reported. But the results of the tests indicate that the seismic response of the shallow footings of a flexible frame structure is complex.

TL;DR: In this article, the influence of repeated earthquakes on the maximum story ductility demands of three-dimensional inelastic concrete frames is investigated. But, the authors focus on the 3-dimensional reinforced concrete structures.

TL;DR: In this paper, a concrete arch dam is subjected to a set of 12 three-component earthquakes, each scaled to 12 increasing intensity levels, and damage propagation through the dam body is investigated and various IDA curves are created.

TL;DR: In this article, a cylindrical vertical pile in a homogeneous stratum, excited by vertically-propagating harmonic shear waves, is examined in the realm of linear viscoelastic material behaviour.

TL;DR: In this paper, the authors studied the efficiency of subgrade stiffening next to the track as a mitigation measure for railway induced vibrations by means of a two-and-a-half-dimensional coupled finite element-boundary element methodology.

TL;DR: In this paper, the authors describe the formulation and numerical resolution of the underlying time-dependent inverse medium problem, and compare the inverted site profile with profiles obtained using the Spectral Analysis-of-Surface-Waves (SASW) method, in an attempt to compare their methodology against a widely used concurrent inversion approach.

TL;DR: In this article, the authors present the results of a large-scale shake table test at E-defense facility on a pile group located adjacent to a gravity-type quay wall and were subjected to liquefaction-induced large ground displacements.

TL;DR: In this paper, a large number of dynamic centrifuge tests and corresponding seismic response analyses were performed to evaluate the dynamic performance of a newly constructed ESB model container and to shed light on the range of testable soil conditions.

TL;DR: In this paper, a semi-analytical model for the evaluation of dynamic impedance of rigid surface footing bonded to multi-layered subsoil is proposed, which is based on the dual vector form of wave motion equation and Green's influence function of subdisk for horizontally layered half-space.

TL;DR: Based on the plane complex variable theory and the image technique, an analytical solution is presented for scattering of plane harmonic P, SV or Rayleigh waves by a shallow lined circular tunnel in an elastic half space.

TL;DR: In this paper, a numerical finite element (FE) parametric study was performed for a slope in a homogeneous linear elastic soil layer over rigid bedrock subjected to vertically propagating in-plane shear waves (Sv waves).

TL;DR: In this paper, a theoretical nonstationary stochastic analysis scheme using pseudo-excitation method (PEM) for seismic analysis of long-span structures under tridirectional spatially varying ground motions, based on which the local site effects on structural seismic response are studied for a high-pier railway bridge.

TL;DR: In this paper, an objective criterion is developed for the directivity pulse-type motions, to identify such motions from the available suite of recorded ground motions, based on the value of maximum fractional signal energy contribution by any half-cycle of the velocity time-history.

TL;DR: In this article, a three-dimensional backfill-structure-soil/foundation interaction phenomenon is simulated using the finite element method in order to analyze the dynamic behavior of cantilever retaining wall subjected to different ground motions.

TL;DR: In this paper, the authors developed a new ground motion predictive equation (GMPE) for the Himalayan region considering both the recorded and simulated earthquakes of moment magnitude 5.3-8.7.

TL;DR: In this article, the authors considered a rectangular block resting on a rigid base, subjected to a range of idealized single-lobe ground acceleration pulses expressed by a generalized function controlled by a single shape parameter, and treated analytically in the realm of linearized equations of motion under the assumption of slender block geometry and rocking without slipping.

TL;DR: In this paper, the effects of stone column and pile-pinning on reducing the potential for liquefaction during earthquakes are investigated parametrically, applying three-dimensional finite element (FE) simulations using OpenSeesPL.

TL;DR: In this article, the performance of a simple single degree of freedom system subject to a dynamic action and equipped with a tuned mass damper is analyzed, based on the reduction of the maximum displacement and dissipated energy into the primary system.