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Confined Masonry Construction for India:A Techno Economical Solution for Improved Seismic Behaviour


Affiliations
1 Structural Engineering Division, CSIR-Central Building Research Institute, Roorkee 247 667, India
 

Masonry constructions are the pervasive building stock in India. However, such constructions suffer widespread damage even at moderate ground shaking due to non-engineered construction. Alternatively, confined masonry shows better promise as a technology that has performed satisfactorily during past earthquakes worldwide. Present article outlines scenario of masonry construction in India, performance of confined masonry in past earthquakes and studies on confined masonry worldwide. The article also encompasses experimental seismic performance of full-scale models of unreinforced masonry (URM), reinforced masonry (RM) and confined masonry (CM) buildings in Indian context under quasi-static reversed cyclic lateral loading in terms of damage pattern, lateral strength, drift and stiffness. The cost analysis of URM, RM, CM and reinforced concrete (RC) residential buildings for a set of 20 samples in seismic Zone IV, keeping uniform input parameters, showed cost reduction in CM buildings when compared to RC buildings.

Keywords

Confined Masonry, Construction Cost, Reinforced Masonry, Seismic Performance, Unreinforced Masonry.
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  • Confined Masonry Construction for India:A Techno Economical Solution for Improved Seismic Behaviour

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Authors

Ajay Chourasia
Structural Engineering Division, CSIR-Central Building Research Institute, Roorkee 247 667, India
Jalaj Parashar
Structural Engineering Division, CSIR-Central Building Research Institute, Roorkee 247 667, India
Shubham Singhal
Structural Engineering Division, CSIR-Central Building Research Institute, Roorkee 247 667, India

Abstract


Masonry constructions are the pervasive building stock in India. However, such constructions suffer widespread damage even at moderate ground shaking due to non-engineered construction. Alternatively, confined masonry shows better promise as a technology that has performed satisfactorily during past earthquakes worldwide. Present article outlines scenario of masonry construction in India, performance of confined masonry in past earthquakes and studies on confined masonry worldwide. The article also encompasses experimental seismic performance of full-scale models of unreinforced masonry (URM), reinforced masonry (RM) and confined masonry (CM) buildings in Indian context under quasi-static reversed cyclic lateral loading in terms of damage pattern, lateral strength, drift and stiffness. The cost analysis of URM, RM, CM and reinforced concrete (RC) residential buildings for a set of 20 samples in seismic Zone IV, keeping uniform input parameters, showed cost reduction in CM buildings when compared to RC buildings.

Keywords


Confined Masonry, Construction Cost, Reinforced Masonry, Seismic Performance, Unreinforced Masonry.

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DOI: https://doi.org/10.18520/cs%2Fv117%2Fi7%2F1174-1183