Earthquake Load Attenuation Using EPS Geofoam Buffers in Rigid Wall Applications

Bathurst, Richard J.; Zarnani, Saman

doi:10.1007/s40098-013-0047-5

Cited by 19 publications

(5 citation statements)

References 10 publications

(14 reference statements)

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“…This leads to the expression for the diameter-thickness ratio (DT). This expression is also used when describing the motion of microscopic particles [15,16]:…”

Section: Definition Of Diameter-thickness Ratio and Height-thickness ...mentioning

confidence: 99%

Experimental Study on the Effective Energy Dissipation Range of EPS Cushion in Shed Under Impact Loading

2022

Advances in Transdisciplinary Engineering

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Expanded Polystyrene (EPS) is a lightweight, malleable, adjustable strength material with good cushioning properties. This paper introduces the concept of diameter-thickness ratio and high-thickness ratio to analyze the impact force and impact duration data of impact tests with different thicknesses of EPS plates and sand cushion layers under different impact environments, which shows that within the range of cushion thickness that can be withstood by the structure of the shed cavern, there is an optimal energy dissipation range for different cushion materials under different diameter-thickness ratio and high-thickness ratio conditions, and the best energy dissipation performance of EPS material cushion layer; if the falling rocks correspond to the diameter-thickness ratio or if the falling rocks exceed this range, the energy dissipation performance of the cushion material will be greatly reduced. Engineering designers can select the ideal EPS cushion thickness according to the maximum cushion thickness, estimated rockfall volume and rockfall height that the shed cavern can withstand, based on the calculations provided in this paper, thus achieving a fast and accurate design of EPS cushion for shed cavern structures.

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“…This leads to the expression for the diameter-thickness ratio (DT). This expression is also used when describing the motion of microscopic particles [15,16]:…”

Section: Definition Of Diameter-thickness Ratio and Height-thickness ...mentioning

confidence: 99%

Experimental Study on the Effective Energy Dissipation Range of EPS Cushion in Shed Under Impact Loading

2022

Advances in Transdisciplinary Engineering

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“…In addition, EPS beads are of low density and high compressibility. They are often used as filling materials in earthquake buffers, such as backfilling materials for retaining walls, and filling materials for trenches [21,22,23,24]. These lightweight filling materials can be used as a buffer layer to reduce the dynamic earth loads for the seismic effect of rigid basements and retaining walls.…”

Section: Introductionmentioning

confidence: 99%

“…These lightweight filling materials can be used as a buffer layer to reduce the dynamic earth loads for the seismic effect of rigid basements and retaining walls. Bathurst and Zarnani [23] and Gao et al [25] conducted a series of shaking table tests to study the seismic performance of the EPS block geofoams. They found that the EPS can effectively reduce the seismic load and the lateral thrust increment of the rigid basement and retaining wall.…”

Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of a Bulk Lightweight Concrete with Expanded Polystyrene (EPS) Beads and Soft Marine Clay

Wang

Soon

2019

Materials

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The variation of physical and mechanical properties of the lightweight bulk filling material with cement and expanded polystyrene (EPS) beads contents under different confining pressures is important to construction and geotechnical applications. In this study, a lightweight bulk filling material was firstly fabricated with Singapore marine clay, ordinary Portland cement and EPS. Then, the influences of EPS beads content, cement content, curing time and confining pressure on the mass density, stress–strain behavior and compressive strength of this lightweight bulk filling material were investigated by unconsolidated and undrained (UU) triaxial tests. In these tests, the mass ratios of EPS beads to dry clay (E/S) were 0%, 0.5%, 1%, 2%, and 4% and the mass ratios of cement to dry clay (C/S) were 10% and 15%. Thirdly, a series of UU triaxial tests were performed at a confining pressure of 0 kPa, 50 kPa, 100 kPa, and 150 kPa after three curing days, seven curing days, and 28 curing days. The results show that the mass density of this lightweight bulk filling material was mainly controlled by the E/S ratio. Its mass density decreased by 55.6% for the C/S ratio 10% and 54.9% for the C/S ratio 15% when the E/S ratio increased from 0% to 4% after three curing days. Shear failure more easily occurred in the specimens with higher cement content and lower confining pressure. The relationships between compressive strength and mass density or failure strain could be quantified by the power function. Increasing cement content and reducing EPS beads content will increase mass density and compressive strength of this lightweight bulk filling material. The compressive strength with curing time can be expressed by a logarithmic function with fitting correlation coefficient ranging from 0.83 to 0.97 for five confining pressures. These empirical formulae will be useful for the estimation of physical and mechanical properties of lightweight concretes in engineering application.

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“…This special issue of the Indian Geotechnical Journal contains contributions on several practical aspects and areas of Geosynthetic engineering, namely retaining structure/wall [1,2], soil-geosynthetic/geosynthetic-geosynthetic interaction [3,4], foundation [5], embankment [6], slope [7], landfill [8], and erosion control [9,10]. I do hope the researchers and the engineers may find these contributions very useful.…”

mentioning

confidence: 99%

“…The first paper by Bathurst and Zarnani [1] is a synthesis of the previous work carried out by the authors on the use of expanded polystyrene (EPS) geofoam buffers for the seismic load attenuation against rigid basement and soil retaining walls. The major practical outcome of their research is the identification of buffer stiffness as the parameter of interest to design these systems.…”

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confidence: 99%

Editorial

Shukla

2013

Indian Geotech J

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Earthquake Load Attenuation Using EPS Geofoam Buffers in Rigid Wall Applications

Cited by 19 publications

References 10 publications

Experimental Study on the Effective Energy Dissipation Range of EPS Cushion in Shed Under Impact Loading

Experimental Study on the Effective Energy Dissipation Range of EPS Cushion in Shed Under Impact Loading

Physical and Mechanical Properties of a Bulk Lightweight Concrete with Expanded Polystyrene (EPS) Beads and Soft Marine Clay

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