Low-Cost Base-Isolation System for Seismic Protection of Rural Buildings

Nanda, Radhikesh Prasad; Shrikhande, Manish; Agarwal, Pankaj

doi:10.1061/(asce)sc.1943-5576.0000254

Cited by 25 publications

(16 citation statements)

References 12 publications

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“…Further work dealing with RSM can be found in [16][17][18][19]. Experimental studies based on shake-table tests by providing geotextiles and a smooth marble frictional base isolation system at the plinth level of a brick masonry building were performed by Nanda et al [20][21][22][23]. Some papers dealing pure-friction base isolation systems can be found in [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

Banović

Radnić

Grgić

2019

Shock and Vibration

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Using a shake-table, the effects of several stone pebble layer parameters (the layer thickness, the fraction of pebbles, the pebble compaction, the pebble moisture, the vertical contact stress below the foundation, and the effect of repeated excitations) on layer aseismic efficiency were investigated. For each considered parameter, a model of a rigid building on an aseismic layer was exposed to four different accelerograms, with three levels of peak ground acceleration (PGA), while all other layer parameters were kept constant. For each test, the characteristic displacements and accelerations were measured. Based on the test results, the main conclusions regarding the effect of the considered parameters on the effectiveness of the adopted aseismic layer are given.

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Section: Introductionmentioning

confidence: 99%

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

Banović

Radnić

Grgić

2019

Shock and Vibration

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“…Patil et al [13] found encouraging results regarding the efficiency of seismic base isolation using river sand based on experimental and analytical work. Nanda et al [14][15][16][17] conducted experimental studies based on shake table tests by providing geotextiles and a smooth marble frictional base isolation system at the plinth level of a brick masonry building. A 65% reduction in absolute response acceleration at the roof level was obtained in comparison with the response of the fixed base structure.…”

Section: Introductionmentioning

confidence: 99%

Shake Table Study on the Efficiency of Seismic Base Isolation Using Natural Stone Pebbles

Banović

Radnić

Grgić

2018

Advances in Materials Science and Engineering

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The results of a shake table study of the efficiency of a seismic base isolation using a layer of natural stone pebbles are presented. Models of stiff and medium-stiff buildings were tested. Case studies were conducted with the foundation of model on the rigid base and on four different layers of pebbles (thin and thick layer with small and large pebbles). Four different horizontal accelerograms were applied, and the characteristic displacements, accelerations, and strains were measured. Strains/stresses of the tested models remained in the elastic area. It was concluded that the effectiveness of the stone pebble layer under the foundation, i.e., the reduction in the seismic forces and stresses in the structure compared to the classical solution of foundation, significantly depends on the type of the applied excitation and depends relatively little on the layer thickness and pebble fraction. The results of the study showed that a layer of pebbles can significantly reduce the peak acceleration and strains/stresses of the model, with acceptable displacements. Further research is expected to confirm the effectiveness of this low-cost and low-tech seismic base isolation and to pave the way to its practical application.

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“…In developing countries, one of the common types of housing in rural areas uses masonry [1]. It consists typically of arranged clay brick bounded by mortar between.…”

Section: Introductionmentioning

confidence: 99%

Low Cost Frictional Seismic Base-Isolation of Residential New Masonry Buildings in Developing Countries: A Small Masonry House Case Study

Habieb¹,

Tavio²,

Milani³

2017

TOCIEJ

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Introduction:An advanced Finite Element model is presented to examine the performance of a low-cost friction based-isolation system in reducing the seismic vulnerability of low-class rural housings. This study, which is mainly numerical, adopts as benchmark an experimental investigation on a single story masonry system eventually isolated at the base and tested on a shaking table in India.Methods:Four friction isolation interfaces, namely, marble-marble, marble-high-density polyethylene, marble-rubber sheet, and marble-geosynthetic were involved. Those interfaces differ for the friction coefficient, which was experimentally obtained through the aforementioned research. The FE model adopted here is based on a macroscopic approach for masonry, which is assumed as an isotropic material exhibiting damage and softening. The Concrete damage plasticity (CDP) model, that is available in standard package of ABAQUS finite element software, is used to determine the non-linear behavior of the house under non-linear dynamic excitation.Results and Conclusion:The results of FE analyses show that the utilization of friction isolation systems could much decrease the acceleration response at roof level, with a very good agreement with the experimental data. It is also found that systems with marble-marble and marble-geosynthetic interfaces reduce the roof acceleration up to 50% comparing to the system without isolation. Another interesting result is that there was little damage appearing in systems with frictional isolation during numerical simulations. Meanwhile, a severe state of damage was clearly visible for the system without isolation.

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Low-Cost Base-Isolation System for Seismic Protection of Rural Buildings

Cited by 25 publications

References 12 publications

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

Shake Table Study on the Efficiency of Seismic Base Isolation Using Natural Stone Pebbles

Low Cost Frictional Seismic Base-Isolation of Residential New Masonry Buildings in Developing Countries: A Small Masonry House Case Study

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