Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Impact of infill masonry type on seismic safety of RC frame structures in Nepal

Impact of infill masonry type on seismic safety of RC frame structures in Nepal Buildings with masonry infills are most common building typology in Nepal. These structures have significantly increased the collapse rate during earthquakes because of its complex nonlinear material behaviour. In fact, infill masonry walls are considered as non-structural elements during seismic design. This leads to inaccurate prediction of seismic performance of the buildings. Present codes unfortunately do not adequately address the analysis and design procedures of infilled frame structures. There was a negligible research work carried out addressing the effect of infill materials during seismic excitation. So, it is the prime concern in Nepalese context where variation in infill materials is considered during building construction in different localities. To this end, the effect of infill materials namely: solid concrete block masonry (INSB), brick masonry and hollow concrete block masonry (INHB) is investigated through nonlinear static pushover and dynamic time history analysis. The results are compared and analysed based on fundamental time period, lateral resistance capacity, lateral stiffness, inter-storey (IS) drift and trends of energy dissipation of infill materials. Study results highlighted that all the infill materials significantly increase the global strength and stiffness of structures; it decreases the inter-storey drift. Structures with solid concrete infill (INSB) have nearly double the lateral stiffness compared to hollow concrete infills (INHB). Finally, seismic safety of structure is studied based on drift limit purposed by standard international guidelines, showing that infill material types significantly modify the performance of structure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Innovative Infrastructure Solutions Springer Journals

Impact of infill masonry type on seismic safety of RC frame structures in Nepal

Loading next page...
 
/lp/springer-journals/impact-of-infill-masonry-type-on-seismic-safety-of-rc-frame-structures-ltSuINv7nW
Publisher
Springer Journals
Copyright
Copyright © Springer Nature Switzerland AG 2022
ISSN
2364-4176
eISSN
2364-4184
DOI
10.1007/s41062-022-00759-2
Publisher site
See Article on Publisher Site

Abstract

Buildings with masonry infills are most common building typology in Nepal. These structures have significantly increased the collapse rate during earthquakes because of its complex nonlinear material behaviour. In fact, infill masonry walls are considered as non-structural elements during seismic design. This leads to inaccurate prediction of seismic performance of the buildings. Present codes unfortunately do not adequately address the analysis and design procedures of infilled frame structures. There was a negligible research work carried out addressing the effect of infill materials during seismic excitation. So, it is the prime concern in Nepalese context where variation in infill materials is considered during building construction in different localities. To this end, the effect of infill materials namely: solid concrete block masonry (INSB), brick masonry and hollow concrete block masonry (INHB) is investigated through nonlinear static pushover and dynamic time history analysis. The results are compared and analysed based on fundamental time period, lateral resistance capacity, lateral stiffness, inter-storey (IS) drift and trends of energy dissipation of infill materials. Study results highlighted that all the infill materials significantly increase the global strength and stiffness of structures; it decreases the inter-storey drift. Structures with solid concrete infill (INSB) have nearly double the lateral stiffness compared to hollow concrete infills (INHB). Finally, seismic safety of structure is studied based on drift limit purposed by standard international guidelines, showing that infill material types significantly modify the performance of structure.

Journal

Innovative Infrastructure SolutionsSpringer Journals

Published: Apr 1, 2022

Keywords: Infill materials; Nonlinear analysis; Energy dissipation; Inter-storey drift; Ductility factor

References