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<p>The seismic behavior of precast concrete shear walls with varying grouted connection profiles is explored in this study. This study explores the seismic behavior of precast concrete shear walls with full and half-grouted coupler systems, focusing on their cyclic performance, structural integrity, and energy dissipation. The walls, with a 0.3 aspect ratio and ventilation provisions above the sill level, were subjected to cyclic lateral loading tests. The specimens included Precast Shear Wall with Full Grouted Coupler Connections (PCW-FGC) and Precast Shear Wall with Half Grouted Coupler Connections (PCW-HGC). Both systems exhibited similar failure mechanisms and seismic behavior, though the PCW-HGC experienced premature crushing at the grooves under lower displacements, leading to a significant reduction in load capacity and energy dissipation. The PCW-FGC outperformed the PCW-HGC, with a 38.53% increase in load-carrying capacity and a 40% improvement in displacement at peak load. Under ultimate conditions, the PCW-FGC showed a 34.73% higher load resistance and 57.14% greater displacement. Its energy dissipation capacity was 47.3% higher, due to delayed groove failures and more efficient dowel lapping. Additionally, the PCW-FGC’s ductility coefficient exceeded that of the PCW-HGC by 6.6%, indicating improved seismic resilience. These findings highlight the importance of coupler configurations and groove geometry in enhancing seismic performance. The study recommends precise design protocols for coupler positioning and groove geometry to optimize seismic performance.</p>

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Cyclic performance of plug-in ventilated precast shear walls with grouted couplers: experimental and numerical analysis

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Hemanth Kumar Anbu,
  • Karthikeyan Kothandapani

摘要

The seismic behavior of precast concrete shear walls with varying grouted connection profiles is explored in this study. This study explores the seismic behavior of precast concrete shear walls with full and half-grouted coupler systems, focusing on their cyclic performance, structural integrity, and energy dissipation. The walls, with a 0.3 aspect ratio and ventilation provisions above the sill level, were subjected to cyclic lateral loading tests. The specimens included Precast Shear Wall with Full Grouted Coupler Connections (PCW-FGC) and Precast Shear Wall with Half Grouted Coupler Connections (PCW-HGC). Both systems exhibited similar failure mechanisms and seismic behavior, though the PCW-HGC experienced premature crushing at the grooves under lower displacements, leading to a significant reduction in load capacity and energy dissipation. The PCW-FGC outperformed the PCW-HGC, with a 38.53% increase in load-carrying capacity and a 40% improvement in displacement at peak load. Under ultimate conditions, the PCW-FGC showed a 34.73% higher load resistance and 57.14% greater displacement. Its energy dissipation capacity was 47.3% higher, due to delayed groove failures and more efficient dowel lapping. Additionally, the PCW-FGC’s ductility coefficient exceeded that of the PCW-HGC by 6.6%, indicating improved seismic resilience. These findings highlight the importance of coupler configurations and groove geometry in enhancing seismic performance. The study recommends precise design protocols for coupler positioning and groove geometry to optimize seismic performance.