Publication Date: 2024/01/20
Abstract: Masonry infill wall RC structures are the most vulnerable against earthquake load because of rapid deg- radation of stiffness, strength, and energy dissipation ca- pacity that lead to the brittle failure of the masonry infill walls. In Bangladesh commonly seen most of the RC structures have open the ground floor uses for parking and other purposes that causes the soft story problem. This study concentrates on the laboratory tests to assess the safety and performance of masonry infilled (clay brick, sand-cement hollow block and hollow clay block) RC frames due to seismic loads as well as to develop prac- tical and cost-efficient techniques for the seismic retrofit and repair of these structures using indigenous materials. Cyclic load is applied by means of Reverse Loading Hy- draulic Jack (capacity 60 tons) mounted on the Reaction Frame. At the time of applying cyclic load the behavior of the test model specimens is observed by means of Data Acquisition System. After the application of cyclic load, the damaged specimens are retrofitted with ferrocement laminates for observing their behavior under same load. This study provides a justified and cost-effective preven- tive and retrofit measure to protect “soft-story” or “weak- story” problem for infill wall RC frame structures.
Keywords: Cyclic Load, Hydraulic Jack, Infill wall, RC Frames, Retrofit, Ferrocemet, Soft -Story.
DOI: https://doi.org/10.5281/zenodo.10538389
PDF: https://ijirst.demo4.arinfotech.co/assets/upload/files/IJISRT24JAN768.pdf
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