Loading, focusing on bare frames and frames with precast infill wall panels and steel-rope bracing. The experimental analysis included careful monitoring of crack initiation, progression, and ultimate failure modes. In the bare frames, cracks first appeared at the beam-column junctions at a relatively low load level of 6 kN, whereas in the infilled frames with bracing, cracks developed at significantly higher load levels of 28–32 kN. The introduction of steel rope bracing substantially improved the structural performance, increasing the ultimate load-bearing capacity by approximately 3.66 times compared to the bare frames. Furthermore, the load-to-cracking load ratio and initial tangent stiffness revealed that the infilled braced frame exhibited enhanced stiffness and strength, although with some decrease in stiffness compared with the bare frame. The results demonstrate that the incorporation of precast infill walls and steel rope bracing not only modifies the crack patterns, but also significantly improves the structural resilience, providing clear warning signs before failure. These findings have practical implications for enhancing the earthquake resistance and structural safety of RC frames.

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Study on Two-Dimensional Reinforced Concrete Frame Incorporating Precast Wall Panels and Steel Rope Bracing: Experimental and Analytical Analysis

  • M. Prakash,
  • N. Parthasarathi,
  • S. Satish,
  • Mukesh Bastola

摘要

Loading, focusing on bare frames and frames with precast infill wall panels and steel-rope bracing. The experimental analysis included careful monitoring of crack initiation, progression, and ultimate failure modes. In the bare frames, cracks first appeared at the beam-column junctions at a relatively low load level of 6 kN, whereas in the infilled frames with bracing, cracks developed at significantly higher load levels of 28–32 kN. The introduction of steel rope bracing substantially improved the structural performance, increasing the ultimate load-bearing capacity by approximately 3.66 times compared to the bare frames. Furthermore, the load-to-cracking load ratio and initial tangent stiffness revealed that the infilled braced frame exhibited enhanced stiffness and strength, although with some decrease in stiffness compared with the bare frame. The results demonstrate that the incorporation of precast infill walls and steel rope bracing not only modifies the crack patterns, but also significantly improves the structural resilience, providing clear warning signs before failure. These findings have practical implications for enhancing the earthquake resistance and structural safety of RC frames.