CiteSeerX - Document Details Isaac Councill, Lee Giles, Pradeep Teregowda ABSTRACT The paper briefly describes an experimental program of shaking table tests on reduced-scale models of seismic buffer systems used to mitigate earthquake-induced loads against rigid walls. The physical load-time responses from selected tests are compared to predictions using three different numerical ...
Get PriceCiteSeerX - Document Details Isaac Councill, Lee Giles, Pradeep Teregowda ABSTRACT The paper briefly describes an experimental program of shaking table tests on reduced-scale models of seismic buffer systems used to mitigate earthquake-induced loads against rigid walls. The physical load-time responses from selected tests are compared to predictions using three different numerical ...
Read More
The numerical results and physical test results for displacement and load on EPS geofoam buffers are compared and analyzed. The model is shown to capture the trends observed in the physical reduced-scale model shaking table test up to a base excitation level of about 0.g.
Read More
DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Read More
CiteSeerX - Document Details Isaac Councill, Lee Giles, Pradeep Teregowda The paper describes the development and verification of a FLAC numerical code that was used to simulate the results of an experimental program of reduced-scale wall models with a seismic geofoam buffer inclusion using a large shaking table. Two physical tests constructed with EPS geofoam materials having different ...
Read More
earthquake-induced earth pressures against rigid earth retaining walls using laboratory shaking table tests. The remainder of the paper summarizes recent research related to numerical modelling of seismic buffer tests, dynamic EPS properties, parametric numerical studies and finally a series of design charts that can be used for
Read More
Numerical modeling of EPS seismic buffer shaking table tests ... The model is shown to capture the trends observed in four physical reduced-scale model shaking table tests carried out with similar ...
Read More
been reported by Hazarika et al. 2003. They performed shaking table tests on 0.7 m-high by 0.295 m-wide models with EPS inclusions having a thickness of 2, 5 and 8 of the wall height, and a control structure i.e. rigid non-yielding wall model. The EPS material had a density of 22 kgm3. The granular backfill soil extended a distance of 1 ...
Read More
Apr 01, 2007 The seismic buffer is modelled as a linear elastic material and the soil wedge shear surface by a stress-dependent linear spring. The model is shown to capture the trends observed in four physical reduced-scale model shaking table tests carried out with similar boundary conditions up to a base excitation level of about 0.7g. In most cases ...
Read More
Zarnani S, Bathurst RJ 2008 Numerical modeling of EPS seismic buffer shaking table tests. Geotext Geomembr 26371383. Article Google Scholar 11. Zarnani S, Bathurst RJ 2009 Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests. Geotext Geomembr 27308312. Article Google ...
Read More
Jun 01, 2014 Numerical modeling of EPS seismic buffer shaking table tests Geotextiles Geomembranes , 26 2008 , pp. 371 - 383 Article Download PDF View Record in
Read More
Apr 26, 2012 The paper provides a synthesis of published work by the writers on both experimental and numerical simulation work on EPS seismic buffers. Proof of concept is first demonstrated using a series of 1 m-high models placed on a shaking table. The tests showed that for the geofoam materials employed, a reduction in peak dynamic loads as great as 40 ...
Read More
Vertical inclusions of expanded polystyrene EPS placed behind rigid retaining walls were investigated as geofoam seismic buffers to reduce earthquake-induced loads. A numerical model was developed using the program FLAC and the model validated against 1-g shaking table test results of EPS geofoam seismic buffer models. Two constitutive models for the component materials were
Read More
an elastic model for EPS geofoam is appropriate for the numerical simulation of physical shaking table tests on non-elasticized EPS geofoam buffers of density normally used in practice i.e., 1239 kgm3 provided that the retained soil height is relatively small in such tests y1.0 m, the EPS buffer
Read More
earthquake-induced earth pressures against rigid earth retaining walls using physical shaking table tests. The remainder of the paper summarizes recent research related to numerical modelling of seismic buffer tests, dynamic EPS properties, parametric numerical studies and
Read More
The numerical results and physical test results for displacement and load on EPS geofoam buffers are compared and analyzed. The model is shown to capture the trends observed in the physical reduced-scale model shaking table test up to a base excitation level of about 0.g.
Read More
A Numerical Model for EPS Geofoam Seismic Buffers. ... in the physical reduced-scale model shaking table test up to a base excitation level of about 0.g. ... values for the EPS seismic buffer ...
Read More
Apr 26, 2012 The paper provides a synthesis of published work by the writers on both experimental and numerical simulation work on EPS seismic buffers. Proof of concept is first demonstrated using a series of 1 m-high models placed on a shaking table. The tests showed that for the geofoam materials employed, a reduction in peak dynamic loads as great as 40 ...
Read More
earthquake-induced earth pressures against rigid earth retaining walls using laboratory shaking table tests. The remainder of the paper summarizes recent research related to numerical modelling of seismic buffer tests, dynamic EPS properties, parametric numerical studies and finally a series of design charts that can be used for
Read More
numerical modelling approaches are described that were used to predict the results of the physical experiments. The methods are based on 1 a simple displacement block wedge approach, and 2 a FLAC code. Both numerical approaches are shown to capture the peak dynamic-force time response of the seismic buffer wall models.
Read More
CiteSeerX - Document Details Isaac Councill, Lee Giles, Pradeep Teregowda The paper describes the development and verification of a FLAC numerical code that was used to simulate the results of an experimental program of reduced-scale wall models with a seismic geofoam buffer inclusion using a large shaking table. Two physical tests constructed with EPS geofoam materials having different ...
Read More
The paper reports the results of six shaking table tests using reduced-scale model walls constructed with expanded polystyrene EPS panels to reduce dynamic earth loads due to base shaking. The results are compared with a nominal identical rigid control wall constructed without a seismic buffer.
Read More
Numerical simulation for dynamic response of EPS geofoam seismic buffers placed behind the rigid retaining walls was carried out with the Fast Lagrangian Analysis for Continuum method FLAC .The considerations of setting boundary condition of the numerical model, inputting and correcting the dynamic time series of seismic acceleration, and selecting the proper damping were discussed.
Read More
Since only the superstructure model was used in the tests, the earthquakes couldnt be inputted directly. Prior to the tests, the seismic analyses of the whole bridge model Figure 3 were carried out and the acceleration responses at the top of the pier were used as the input motions of the shaking table
Read More
They conducted small- numerical and physical tests demonstrate that an EPS scale shaking table tests on 0.7 m-high by 0.295 m-wide geofoam seismic buffer constructed with typical models using an EPS geofoam inclusion with density 22 commercially available materials can reduce dynamic 3 kgm and different thickness 2, 5 and 8 of the wall earth ...
Read More
Copyright © .Henan Antek Mining Machinery Co., ltd. All rights reserved. Sitemap
