Study on the Response of Strengthening Strategies for Masonry-infilled Open Ground Storey Framed Building

Year : 2021 | Volume : 08 | Issue : 02 | Page : 22-37

    Aojoy Kumar Shuvo

  1. Ashadul Islam

  1. Lecturer, Department of Building Engineering and Construction Management, Rajshahi University of Engineering and Technology, Rajshahi, Bangladesh
  2. Lecturer, Department of Building Engineering and Construction Management, Rajshahi University of Engineering and Technology, Rajshahi, Bangladesh


The strengthening of reinforced concrete (RC) frame buildings with masonry infill wall and with open ground storey is a very timely and significant topic because of the poor performance against seismic action. The absence of infill walls in the ground storey makes the ground storey less stiff and weaker than the all upper storys which results in a poor performance against lateral loads. Soft storey mechanism prevails in these cases and causes premature failure. The objective of this paper is to oversee the response of different strengthening systems applied in ground storey of the building to improve the seismic behavior based on numerical analyzes. The strengthening options are chosen and provided in such a way that the options will not block the free space in the ground storey level which is kept open to serve different purposes. In addition, the study highlights the building performance by obtaining the capacity of different options and represents the variation of time period with the change of stiffness. The strengthening options investigated were design columns of ground storey for higher load, fixing diagonal bracing at the exterior sides, providing lateral buttresses and installing shear wall on exterior four corners. To find out the effective strengthening option without create any obstacle to the service for which the ground storey is kept open, the results from analyzes of strengthened buildings will be compared.

Keywords: Reinforced concrete frame, infill masonry, strengthening options, seismic effects, time period.

[This article belongs to Journal of Structural Engineering and Management(josem)]

How to cite this article: Aojoy Kumar Shuvo, Ashadul Islam Study on the Response of Strengthening Strategies for Masonry-infilled Open Ground Storey Framed Building josem 2021; 08:22-37
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Regular Issue Open Access Article
Volume 08
Issue 02
Received June 18, 2021
Accepted August 10, 2021
Published August 30, 2021