不同损伤可控型构造措施对砌体填充墙-RC框架受力性能影响研究
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作者单位:

1.苏州科技大学;2.哈尔滨工业大学

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中图分类号:

TU398

基金项目:

国家自然科学基金(52208190)


Study on the influence of different damage-controllable construction methodson mechanical performance of masonry-infilled RC frames
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Affiliation:

1.suzhou university of science and technology;2.Harbin Institute of Technology

Fund Project:

National Natural Science Foundation of China(52208190)

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    摘要:

    为评估现有砌体填充墙可实现损伤可控构造措施的适用性,本文搜集建立包含空框架、刚性连接以及损伤可控型连接措施在内的17组63片砌体填充墙-RC框架拟静力试验数据库,并从试件初始刚度、峰值承载力、位移延性以及墙体损伤形态等方面分析其对整体结构受力性能影响规律。结果表明:损伤可控型构造措施主要集中于墙-框界面和墙体内部构造两个区域,其中墙-框界面构造旨在减弱墙-框相互作用,而墙体内部构造则通过墙体分区控制以改善墙体破坏模式。损伤可控型构造措施能够改善传统刚性方案中整体构件初始刚度过大和延性降低的不足,但牺牲了一定的承载力储备。相较于墙-框界面构造措施,墙体内部构造措施在改善试件位移延性、墙面损伤率和过峰值点后力学性能等方面具有显著优势,未来可作为提升墙体韧性水平的首选方案。

    Abstract:

    To evaluate the applicability of commonly used damage-controllable construction methods for masonry-infilled reinforced concrete (RC) frames, a comprehensive pseudo-static test database comprising 63 specimens in 17 groups of masonry-infilled RC frames was established, including bare frames, rigid connections, and damage-controllable specimens. The discussion on the influence of these construction methods on the mechanical performance of the specimens was systematically analyzed in terms of initial stiffness, maximum load-bearing capacity, displacement ductility, and wall damage patterns. The results indicate that current damage-controllable construction methods are primarily concentrated in two areas: the wall-frame interface and the internal structure of the wall. The design of the wall-frame interface aims to weaken the wall-frame interaction, while the design of the internal structure of the wall seeks to achieve zoning damage control within the wall, thereby improving failure modes. These damage-controllable construction methods can effectively mitigate the excessive initial stiffness and reduce ductility of the specimens observed in traditional rigid connections, albeit at the cost of some load-bearing reserve. Furthermore, compared to the wall-frame interface construction methods, the internal construction methods of the wall show more significant improvements in the displacement ductility, the post-peak mechanical performance, and damaged area ratio of the specimens, rendering it a preferred choice for enhancing the resilience of the wall.

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  • 收稿日期:2025-03-05
  • 最后修改日期:2025-05-13
  • 录用日期:2025-06-01
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