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1.沈阳建筑大学土木工程学院,辽宁 沈阳110168
2.大连理工大学建设工程学部,辽宁 大连116024
Received:04 November 2023,
Revised:2024-02-28,
Published:28 April 2025
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张皓,杨思伟,李宏男等.楼板约束对装配式耗能剪力墙受力性能影响研究[J].防灾减灾工程学报,2025,45(02):393-404.
ZHANG Hao,YANG Siwei,LI Hongnan,et al.Study on the Influence of Floor Slab Restraint on the Mechanical Performance of Precast Energy⁃dissipating Shear Walls[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):393-404.
张皓,杨思伟,李宏男等.楼板约束对装配式耗能剪力墙受力性能影响研究[J].防灾减灾工程学报,2025,45(02):393-404. DOI: 10.13409/j.cnki.jdpme.20231104001.
ZHANG Hao,YANG Siwei,LI Hongnan,et al.Study on the Influence of Floor Slab Restraint on the Mechanical Performance of Precast Energy⁃dissipating Shear Walls[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):393-404. DOI: 10.13409/j.cnki.jdpme.20231104001.
为研究楼板对竖向拼缝干式耗能连接的装配式剪力墙受力性能的影响,建立了三种不同的装配式耗能剪力墙有限元模型,一片未设置楼板的装配式耗能剪力墙试件(PC⁃0)、两片设置不同形式现浇楼板的装配式剪力墙试件(PC⁃1、PC⁃2),其中PC⁃2试件采用了减小楼板约束的简易构造措施。对上述三个试件进行低周往复加载作用下的受力性能数值模拟分析,初步研究了楼板约束对装配式剪力墙受力性能的影响。并通过采取简易构造措施来减小楼板约束的影响,以提升装配式剪力墙的耗能能力。研究表明:考虑楼板约束后,装配式耗能剪力墙的刚度和承载力有小幅提升,楼板约束会限制阻尼器连接件耗能效率,使部分阻尼器连接件的耗能发挥不充分,导致耗能能力及延性降低;通过构造措施减小了楼板约束的影响进行后,阻尼器连接件的耗能效率提高,导致墙体的耗能能力和延性明显提升,而承载力和刚度则略有降低。楼板约束对装配式耗能墙体受力性能的影响不容忽视,在该类墙体的抗震设计与分析中应予以考虑。
This study investigated the influence of floor slab restraints on the mechanical performance of precast shear walls with vertically segmented dry energy-dissipating connections. Three finite element models were developed: one specimen without a floor slab (PC-0)
and two specimens with different types of cast-in-place slabs (PC-1
PC-2). A simplified structural measure was implemented in PC-2 to reduce the influence of the slab restraint. Numerical simulations under low-cycle reversed loading were conducted to evaluate the mechanical performance of these specimens and to preliminarily assess the impact of slab restraints. Furthermore
the effectiveness of simplified structural measures in mitigating slab restraints and improving the energy-dissipating capacity of the shear walls was explored. The results showed that the inclusion of slab restraints slightly enhanced the stiffness and bearing capacity of the precast energy-dissipating shear walls. However
slab restraints limited the energy dissipation efficiency of the damper connectors
leading to insufficient energy dissipation in some connectors and thus reduced overall energy-dissipating capacity and ductility. When slab restraint was alleviated through structural measures
the energy dissipation efficiency of the damper connectors improved significantly
leading to a notable enhancement in both energy-dissipating capacity and ductility
albeit with a slight reduction in stiffness and load-bearing capacity. The effect of slab restraints on the mechanical performance of precast shear walls is non-negligible and should be considered in seismic design and analysis.
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