Study on the influence of different damage-controllable construction methodson mechanical performance of masonry-infilled RC frames
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Affiliation:

1.suzhou university of science and technology;2.Harbin Institute of Technology

Clc Number:

TU398

Fund Project:

National Natural Science Foundation of China(52208190)

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    Abstract:

    To evaluate the applicability of commonly used damage-controllable construction methods for masonry-infilled reinforced concrete (RC) frames, a comprehensive pseudo-static test database comprising 63 specimens in 17 groups of masonry-infilled RC frames was established, including bare frames, rigid connections, and damage-controllable specimens. The discussion on the influence of these construction methods on the mechanical performance of the specimens was systematically analyzed in terms of initial stiffness, maximum load-bearing capacity, displacement ductility, and wall damage patterns. The results indicate that current damage-controllable construction methods are primarily concentrated in two areas: the wall-frame interface and the internal structure of the wall. The design of the wall-frame interface aims to weaken the wall-frame interaction, while the design of the internal structure of the wall seeks to achieve zoning damage control within the wall, thereby improving failure modes. These damage-controllable construction methods can effectively mitigate the excessive initial stiffness and reduce ductility of the specimens observed in traditional rigid connections, albeit at the cost of some load-bearing reserve. Furthermore, compared to the wall-frame interface construction methods, the internal construction methods of the wall show more significant improvements in the displacement ductility, the post-peak mechanical performance, and damaged area ratio of the specimens, rendering it a preferred choice for enhancing the resilience of the wall.

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History
  • Received:March 05,2025
  • Revised:May 13,2025
  • Adopted:June 01,2025
  • Online:
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