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APPLICATION OF EPS GEOFOAM AS A SEISMIC BUFFER: …

The paper is a synthesis of previously published work by the authors that is focused on the use of expanded polystyrene (EPS) geofoam buffers for seismic load attenuation against rigid basement and soil retaining walls. The paper begins with a brief description of the first documented field application followed by a description of physical 1 m-high reduced-scale shaking table …

Numerical Simulation for Dynamic Response of EPS Geofoam ...

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 …

Numerical Analysis of Earthquake Load Mitigation on Rigid ...

results of shaking table tests carried out on 1 m-high rigid walls with and without EPS seismic buffers, and a cohe-sionless soil backfill extending 2 m beyond the rigid wall (or buffer) (Fig. 2). The wall, seismic buffer and sand backfill were contained within a rigid strongbox fixed to the shaking table. The thickness of the geofoam …

NUMERICAL INVESTIGATION OF GEOFOAM SEISMIC …

The paper describes the experimental design and results of tests used to investigate the use of compressible EPS (geofoam) seismic buffers to attenuate dynamic loads against rigid retaining wall structures. The tests were carried out using 1-m-high models mounted on a large shaking table.

Experimental investigation of EPS geofoam seismic buffers ...

Shaking table testing of geofoam seismic buffers. Soil Dynamics and Earthquake Engineering. 27(4, ): 324–332 CrossRef Google Scholar Bathurst RJ, Keshavarz A, Zarnani S Take A (2007b) A simple displacement model for response analysis of EPS geofoam seismic buffers.

Earthquake load attenuation using EPS geofoam buffers in ...

Jan 12, 2016· SEISMIC ISOLATION OF EARTH RETAINING WALLS USING EPS 1. 1 SEISMIC ISOLATION OF EARTH RETAINING WALLS USING EPS COMPRESSIBLE INCLUSIONS – RESULTS FROM CENTRIFUGE TESTING A. Athanasopoulos-Zekkos1, K. Lamote2 and G. Athanasopoulos3 ABSTRACT An experimental program involving centrifuge testing on model retaining walls under horizontal cyclic shaking …

Numerical Simulation for Dynamic Response of EPS Geofoam ...

Physical model testing (Shaking table, Centrifuge) 9 Expanding into a Sustainable Future 04/11/2010 ... Shaking Table Tests (Zarnani et al. 2005) (with a thickness of 0.15m) wall (height =1m) • EPS12 & EPS16 buffers …

Experimental investigation of EPS geofoam seismic buffers ...

high rigid walls with and without EPS seismic buffers, and a cohesionless soil backfill extending 2 m beyond the rigid wall (or buffer) (Fig. 2). The wall, seismic buffer and sand backfill were contained within a rigid strongbox fixed to the shaking table. The thickness of the geofoam …

Experimental investigation of EPS geofoam seismic buffers ...

Figure 1. Reduced-scale EPS geofoam seismic buffer shaking table tests SHAKING TABLE TESTS Zarnani and Bathurst (2007) and Bathurst et al. (2007a) reported the results of shaking table tests carried out on 1 m-high rigid walls with and without EPS seismic buffers, and a cohesionless soil backfill extending 2 m beyond the rigid wall (or buffer ...

EPS Seismic Buffers for Earthquake Load Attenuation ...

Earthquake load attenuation using EPS geofoam buffers in rigid wall applications . ... the verified FLAC model was used to develop a series of preliminary design charts for the selection of a suitable seismic buffer based on characteristics of the design earthquake accelerogram ... shaking table test…

NUMERICAL INVESTIGATION OF GEOFOAM SEISMIC BUFFERS …

a geofoam seismic buffer. The physical tests were carried out on a shaking table at the Royal Military College of Canada. The physical test program and example test results are described in the …

Use of EPS Geofoam for Reducing the Earthquake Effects on ...

surcharge and seismic loading and to assess effectiveness of EPS geofoam, through experimental investigations on small scale models tested on 1-D shaking table facility. 3 EXPERIMENTAL PROGRAM The physical tests described in this paper were carried out on 1.2 m × 1.2 m shaking table …

Force and Compression Analysis for Rigid Retaining Walls ...

Experimental investigation of EPS geofoam seismic buffers using shaking table tests S. Zarnani1 and R. J. Bathurst2 1PhD candidate, GeoEngineering Centre at Queen's-RMC, Department of Civil ...

LAB TESTING — Damptech | Earthquake Protection

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 …

Earthquake load attenuation using EPS geofoam buffers in ...

A damper unit attached to the girder and instrumented for the testing is shown on the right photo. The seismic response was evaluated using the shaking-table facility that simulated earthquake ground …

SEISMIC ISOLATION OF EARTH RETAINING WALLS USING EPS

The paper is a synthesis of previously published work by the authors that is focused on the use of expanded polystyrene (EPS) geofoam buffers for seismic load attenuation against rigid basement and soil retaining walls. The paper begins with a brief description of the first documented field application followed by a description of physical 1 m-high reduced-scale shaking table …

"Earthquake load attenuation using EPS geofoam buffers in ...

Reduced-Scale Shaking Table Experiment Design A total of seven different tests were carried out. An example configuration showing the arrangement of the non-yielding wall, geofoam seismic buffer, retained soil and instrumentation is illustrated in Fig. 1. Wall 1 (control) was constructed without a seismic buffer.

SEISMIC LOAD ATTENUATION USING EPS GEOFOAM …

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): ABSTRACT: 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.

Shaking table testing of geofoam seismic buffers ...

high rigid walls with and without EPS seismic buffers, and a cohesionless soil backfill extending 2 m beyond the rigid wall (or buffer) (Fig. 2). The wall, seismic buffer and sand backfill were contained within a rigid strongbox fixed to the shaking table. The thickness of the geofoam …

Earthquake load attenuation using EPS geofoam buffers in ...

Request PDF | Shaking table testing of geofoam seismic buffers | The paper describes the experimental design and results of tests used to investigate the use of compressible EPS (geofoam) seismic ...

Earthquake Load Attenuation Using EPS Geofoam Buffers in ...

Jun 03, 2007· The test with the highest buffer stiffness resulted in a 15% reduction in dynamic load and the test with lowest stiffness resulted in a 40% reduction in dynamic load compared with the control wall. The results of these experiments provide proof of the concept that EPS panels placed against rigid walls can act as seismic buffers …

Earthquake Load Attenuation Using EPS Geofoam Buffers in ...

EXPERIMENTAL INVESTIGATION OF GEOFOAM SEISMIC BUFFERS USING A SHAKING TABLE Saman Zarnani, Richard J. Bathurst and Andrew Gaskin ... geofoam seismic buffer, retained soil and instrumentation is illustrated in Figure 1. Wall 1 (control) was constructed without a seismic buffer. ... Example shaking table test configuration and instrumentation .

10.1016/j.soildyn.2006.08.003 | DeepDyve

Apr 26, 2012· EPS Seismic Buffers for Earthquake Load Attenuation against Rigid Retaining Walls ... 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 …

SEISMIC LOAD ATTENUATION USING EPS GEOFOAM BUFFERS …

results of shaking table tests carried out on 1 m-high rigid walls with and without EPS seismic buffers, and a cohe-sionless soil backfill extending 2 m beyond the rigid wall (or buffer) (Fig. 2). The wall, seismic buffer and sand backfill were contained within a rigid strongbox fixed to the shaking table. The thickness of the geofoam …

Recent research on EPS geofoam seismic buffers

Simulation results accord with the physical shaking table test data. Numerical results and physical test demonstrate that EPS geofoam seismic buffers hold great promise to reduce loads against rigid …

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