古建筑槛窗木构架抗震性能及损伤等级评价
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TU366.2

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北京市自然科学基金—市教委联合资助项目(KZ202010005012);国家重点研发计划(2019YFC1520803)


Seismic performance and damage evaluation on Kanchuang frame of ancient architecture
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    摘要:

    为了研究木结构古建筑带内部填充木框架的抗震性能和价值损伤规律,选取清式木结构古建筑中广泛应用的槛窗木构架为研究对象,制作了缩尺比例为1∶2的试验模型进行低周往复试验,分析了槛窗木构架的荷载位移滞回曲线、骨架曲线、刚度退化规律和耗能能力。试验结果表明:槛窗木构架滞回曲线有明显的“捏缩效应”,随着加载位移的增大和加载循环次数的增多,这种效应就越明显;试验过程中墙体首先发生破坏,而后随着加载的进行,墙体逐渐加剧破坏,木构件出现拔榫、棂条劈裂等破坏。墙体对木构架的刚度影响较大。结合槛窗木构架可能存在的价值点,提出基于价值的损伤评价指标,为古建筑的修复、加固和价值损伤评估提供参考。

    Abstract:

    In order to study the seismic performance and value damage pattern of timber frame, which are used in ancient timber architecture and infilled with windows and wall, Kanchuang frame is selected as the study object. Kangchuang frames are widely used in Qing official architecture. The 1∶2 reduced-scale models were made for low cyclic loading test. The load-displacement hysteretic curves, skeleton curves, stiffness degradation law and energy dissipation capacity of models were analyzed. The research results show that the load-displacement hysteretic curves have obvious pinching effect, and this effect becomes more obvious with increase of loading displacement and loading cycle number. The walls of Kanchuang frame cracked at first, then the cracks increase with the load increase. The wood structure appears to tenon pulling, lattice splintering and other damage. Walls contribute great stiffness to the structure. Combined with the possible value points of sill window frame, a value-based damage evaluation standard for Kanchuang frame is proposed, which provides good reference for the repair, reinforcement, and value loss evaluation of ancient timber architecture.

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郇君虹,郭小东,马东辉,管忠正.古建筑槛窗木构架抗震性能及损伤等级评价[J].土木与环境工程学报(中英文),2022,44(2):129-137. HUAN Junhong, GUO Xiaodong, MA Donghui, GUAN Zhongzheng. Seismic performance and damage evaluation on Kanchuang frame of ancient architecture[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2022,44(2):129-137.10.11835/j. issn.2096-6717.2021.057

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  • 收稿日期:2020-12-31
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  • 在线发布日期: 2022-02-14
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