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Experimental and Numerical Assessment of Masonry Infill on Seismic Performance of RC Frame Structure

Experimental and Numerical Assessment of Masonry Infill on Seismic Performance of RC Frame Structure

Syed Azmat Ali Shah1*, Asfandyar Ahmed2, Khan Shahzada3, Syed Muhammad Ali4, Akhtar Naeem Khan5 and Akhter Gul6

1Centre for Disaster Preparedness and Management, University of Peshawar, Khyber Pakhtunkhwa, Pakistan; 2City University of Science and Information Technology Peshawar, Khyber Pakhtunkhwa, Pakistan; 3University of Engineering and Technology Peshawar, Khyber Pakhtunkhwa, Pakistan; 4Earthquake Engineering Center, University of Engineering and Technology Peshawar, Khyber Pakhtunkhwa, Pakistan; 5Civil, Agricultural and Mining Engineering, University of Engineering and Technology Peshawar Khyber Pakhtunkhwa, Pakistan; 6Department of Civil Engineering UET Campus-III Bannu, Khyber Pakhtunkhwa, Pakistan.

*Correspondence: Syed Azmat Ali Shah, Centre for Disaster Preparedness and Management, University of Peshawar, Khyber Pakhtunkhwa, Pakistan; Email: engrazmatalishah@uop.edu.pk 

ABSTRACT

The behavior of solid brick masonry is presented under the application of lateral loads. Two frames made of reinforced concrete, bare frame and masonry infilled frame, were subjected to displacement controlled lateral loading. Experimental tests and numerical modeling were performed, and the results compared show a good relationship. The analysis results match very well with the experimental observations. For numerical modeling of the infill wall, a modified micro-modelling approach is selected where the head and bed joints are lumped into the bricks and an interface model was defined between these bricks representing the behavior of the mortar joint. Appropriate material models and damage criteria are employed for each mode of failure. A parametric study was then performed to assess the influence of different material properties on the lateral load capacity of the RC frame infilled with masonry. It was demonstrated that for the same gravity load level the enhancement of brick unit properties enhances the total capacity of the RC frame with infill. Similarly, by increasing the gravity load on the structure with the same brick unit properties, the lateral load capacity increases considerably.
 

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Pakistan Journal of Zoology

December

Vol. 53, Iss. 6, Pages 2001-2521

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