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<p>This paper presents a modular prefabricated reinforced concrete shear wall featuring in-plane geometric asymmetry, with panels connected by unbonded high-strength bolts. Pseudo-static tests and finite element simulations were conducted to investigate the effects of bolt grade and preload level on seismic performance. The hysteretic response exhibited significant pinching and asymmetry. Owing to the asymmetric geometry, horizontal loading induced torsional deformation in the bottom transverse rib, reducing the yield strength by up to 16%. With the overall geometry held constant, increasing the longitudinal reinforcement ratio in the longitudinal ribs and the stirrup ratio in the bottom transverse rib effectively mitigated torsional effects and alleviated the associated strength degradation.</p>

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Study on Seismic Performance of In-Plane Geometric Asymmetry Modular Prefabricated Reinforced Concrete Shear Wall

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月7日

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  • Zeng Yang,
  • Hui Li,
  • Wenjun Gao,
  • Hongduo Tang,
  • Wen Liu,
  • Hu Xu

摘要

This paper presents a modular prefabricated reinforced concrete shear wall featuring in-plane geometric asymmetry, with panels connected by unbonded high-strength bolts. Pseudo-static tests and finite element simulations were conducted to investigate the effects of bolt grade and preload level on seismic performance. The hysteretic response exhibited significant pinching and asymmetry. Owing to the asymmetric geometry, horizontal loading induced torsional deformation in the bottom transverse rib, reducing the yield strength by up to 16%. With the overall geometry held constant, increasing the longitudinal reinforcement ratio in the longitudinal ribs and the stirrup ratio in the bottom transverse rib effectively mitigated torsional effects and alleviated the associated strength degradation.