Scholarlink

<p>Viscous dampers are widely used in reinforced concrete (RC) structures due to their effective energy dissipation under seismic loading. This study investigates the seismic performance of three single-story, single-bay RC frames: a precast concrete (PC) frame with a viscous damper, a cast-in-place (CIP) frame with a viscous damper, and a PC frame without a damper. A sinusoidal steady-state excitation test was conducted to evaluate structural behavior under varying frequencies. The experimental analysis covered failure modes, hysteresis response, displacement ductility, stiffness degradation, energy dissipation capacity, and equivalent viscous damping. The results show that adding a viscous damper significantly improved lateral resistance, initial stiffness, and energy dissipation capacity, while slightly reducing displacement ductility. The PC frame with a damper showed seismic behavior similar to the CIP frame, indicating that dampers can effectively compensate for construction-related discontinuities in precast systems. The calculated-to-experimental strength ratio ranged from 0.57 to 0.62, highlighting the conservative nature of code-based predictions. These findings support the application of viscous dampers in PC frames and provide valuable experimental data for enhancing seismic resilience in building design.</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

Experimental study on seismic performance of precast concrete frame with viscous damper

  • 期刊论文

  • 发表日期：

    2025年8月8日

查看全文
  • Meiyan Bai,
  • Lin Shi,
  • Yong Zhao

摘要

Viscous dampers are widely used in reinforced concrete (RC) structures due to their effective energy dissipation under seismic loading. This study investigates the seismic performance of three single-story, single-bay RC frames: a precast concrete (PC) frame with a viscous damper, a cast-in-place (CIP) frame with a viscous damper, and a PC frame without a damper. A sinusoidal steady-state excitation test was conducted to evaluate structural behavior under varying frequencies. The experimental analysis covered failure modes, hysteresis response, displacement ductility, stiffness degradation, energy dissipation capacity, and equivalent viscous damping. The results show that adding a viscous damper significantly improved lateral resistance, initial stiffness, and energy dissipation capacity, while slightly reducing displacement ductility. The PC frame with a damper showed seismic behavior similar to the CIP frame, indicating that dampers can effectively compensate for construction-related discontinuities in precast systems. The calculated-to-experimental strength ratio ranged from 0.57 to 0.62, highlighting the conservative nature of code-based predictions. These findings support the application of viscous dampers in PC frames and provide valuable experimental data for enhancing seismic resilience in building design.