Experimental investigation of influences of several parameters on seismic capacity of masonry infilled reinforced concrete frame. (15th June 2019)

• Record Type: Journal Article
• Authors: Alwashali, Hamood; Sen, Debasish; Jin, Kiwoong; Maeda, Masaki
• Is Part Of: Engineering structures. Volume 189(2019)
• Page Start: 11
• Page End: 24
• Publication Date: 2019-06-15
• Subjects: Masonry infill -- Reinforced concrete buildings -- Seismic capacity -- Backbone curve -- Equivalent strut width; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2019.03.020
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Improvement of infill's shear strength with the increase of RC frame strength. Increasing frame strength changed the behavior of brittle masonry into ductile. Low strength mortar showed beneficial ductile behavior and relatively less damage. Abstract: This study investigated the in-plane seismic capacity of three ½ scale single story reinforced concrete frames with masonry infill that were subjected to static cyclic lateral loading. Three main parameters were investigated: the strength of the surrounding reinforced concrete (RC) columns, strength of RC beams, and mortar strength of the masonry infill. These parameters were selected because there are large variations between the design codes and past research on their importance. Experimental results showed that the infill shear strength greatly increased with the surrounding frame strength. The investigated parameters did not significantly affect the initial stiffness. The specimen consisting of a masonry panel built with low-strength mortar showed relatively greater ductility and relatively less damage to the masonry infill panel and surrounding frame. Based on the results, the frame strength ratio needs to be included as a parameter in the design codes for new buildings because it can alter the shear strength of the masonry infill and ductility of the whole structure.