Scholarlink

<p>Partially infilled frames (PIFs) have infill masonry extending only up to a certain height, leaving a gap between the top of the infill and the beam. This study experimentally investigates how different partial infill types affect the lateral response of reinforced concrete (RC) frames with special ductile detailing, following IS 13920 (2016). Four 1/3-scale specimens were tested: one bare frame and three partially infilled frames, each with a 50% opening area but different infill materials like clay brick masonry, fly ash brick masonry, and AAC block masonry. The specimens underwent displacement-controlled slow cyclic loading to evaluate their lateral behavior in terms of initial lateral stiffness, lateral strength, energy dissipation, stiffness degradation, ductility, and failure modes. The results showed that the presence of partial infills significantly improved the load-carrying capacity of the frames. The primary failure mechanisms included bed joint shear failure in the infill, flexural failure at the column bases, and shear failure forming an ‘X’ pattern in the beam-column joints. Among the different infill materials, AAC block masonry provided the least improvement in lateral load resistance, resulting in a response similar to that of the bare frame. However, the presence of AAC infill enhanced the ductility of the RC frame, making it suitable as an infill material for PIFs. These findings underscore the critical role of infill material selection in determining the seismic performance of RC frames.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Lateral response of special ductile RC frames partially infilled with different types of brick masonry: an experimental investigation

  • 期刊论文

  • 发表日期：

    2026年4月2日

查看全文
  • Birendra Nath Singha,
  • Avijit Mohanta,
  • Goutam Mondal,
  • Suresh R. Dash

摘要

Partially infilled frames (PIFs) have infill masonry extending only up to a certain height, leaving a gap between the top of the infill and the beam. This study experimentally investigates how different partial infill types affect the lateral response of reinforced concrete (RC) frames with special ductile detailing, following IS 13920 (2016). Four 1/3-scale specimens were tested: one bare frame and three partially infilled frames, each with a 50% opening area but different infill materials like clay brick masonry, fly ash brick masonry, and AAC block masonry. The specimens underwent displacement-controlled slow cyclic loading to evaluate their lateral behavior in terms of initial lateral stiffness, lateral strength, energy dissipation, stiffness degradation, ductility, and failure modes. The results showed that the presence of partial infills significantly improved the load-carrying capacity of the frames. The primary failure mechanisms included bed joint shear failure in the infill, flexural failure at the column bases, and shear failure forming an ‘X’ pattern in the beam-column joints. Among the different infill materials, AAC block masonry provided the least improvement in lateral load resistance, resulting in a response similar to that of the bare frame. However, the presence of AAC infill enhanced the ductility of the RC frame, making it suitable as an infill material for PIFs. These findings underscore the critical role of infill material selection in determining the seismic performance of RC frames.