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<p>Ancient wooden architecture serves as invaluable repositories of historical and cultural heritage. Among their critical components, the <i>dougong</i>-fork column plays a pivotal role, yet it is susceptible to inclination or collapse resulting from material degradation and external load actions. Consequently, there is a compelling need to investigate the seismic performance of the structure. Moreover, a reinforcement method which is based on the principle of minimal intervention is proposed, involving the addition of a vertical auxiliary column positioned posterior to the existing column. To evaluate this method, full-scale models of the inclined <i>dougong</i>-fork column with and without the reinforcement method were constructed and subjected to pseudo-static cyclic loading tests. The analysis encompassed the damage mechanism, deformation characteristics, reinforcement mechanism, and seismic performance of the current model (CM) and the reinforced model (FM). The results indicated that vertical cracks in the fork arms were induced by the restrictive effect of the <i>Zhutou-Fang</i>, while local embedded pressure deformations in the <i>Shuatou-Fang</i> occurred due to the embedment effect of the fork column. Furthermore, under equivalent horizontal displacement, the FM exhibited an energy-dissipating capacity 1.23–3.09 times greater and a stiffness 1.67–2.13 times higher than the CM. These findings provide significant theoretical insights and practical guidance for the conservation and reinforcement of ancient wooden architecture.</p>

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Experimental study on seismic performance of the original and reinforced inclined dougong-fork column in the Yingxian Wood Pagoda

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月14日

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  • Yang Deng,
  • Linxi Wang,
  • Yuhang Li,
  • Aiqun Li,
  • Ben Sha,
  • Lixin Shen,
  • Yange Jia

摘要

Ancient wooden architecture serves as invaluable repositories of historical and cultural heritage. Among their critical components, the dougong-fork column plays a pivotal role, yet it is susceptible to inclination or collapse resulting from material degradation and external load actions. Consequently, there is a compelling need to investigate the seismic performance of the structure. Moreover, a reinforcement method which is based on the principle of minimal intervention is proposed, involving the addition of a vertical auxiliary column positioned posterior to the existing column. To evaluate this method, full-scale models of the inclined dougong-fork column with and without the reinforcement method were constructed and subjected to pseudo-static cyclic loading tests. The analysis encompassed the damage mechanism, deformation characteristics, reinforcement mechanism, and seismic performance of the current model (CM) and the reinforced model (FM). The results indicated that vertical cracks in the fork arms were induced by the restrictive effect of the Zhutou-Fang, while local embedded pressure deformations in the Shuatou-Fang occurred due to the embedment effect of the fork column. Furthermore, under equivalent horizontal displacement, the FM exhibited an energy-dissipating capacity 1.23–3.09 times greater and a stiffness 1.67–2.13 times higher than the CM. These findings provide significant theoretical insights and practical guidance for the conservation and reinforcement of ancient wooden architecture.