对具有斜面平面摩擦阻尼器的自中心预复合墙体进行实验和分析调查
Wei Huang1, Zhenhui Fan1, Kang Liu2
1School of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China.
Materials (Basel, Switzerland)
|March 28, 2024
概括
这项研究引入了带有斜面平面摩擦阻尼器 (SPFD) 的自中心墙,以最大限度地减少地震损坏和钢筋混凝土剪切墙的维修成本. 测试证实了其在减少损害和残留漂移方面的有效性,同时满足能源消耗需求.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 材料科学 材料科学 材料科学
背景情况:
- 钢筋混凝土切割墙对于抗震性至关重要,但容易受到重大损坏和高维修成本.
- 现有的抗震保护系统往往需要在地震发生后进行复杂的维修.
- 需要创新的结构系统,既能降低损害,又能提供自我中心能力.
研究的目的:
- 提出和评估一种新型的自中心墙系统,采用斜平面摩擦阻尼器 (SPFD).
- 为了研究初始后应力 (PT) 和摩擦螺栓预应力对地震性能的影响.
- 评估拟议的墙体系统的损害减少,残留漂移和能量消耗.
主要方法:
- 开发了一种自中心墙系统,包括预制复合墙,钢墙脚和后张 (PT) 肌.
- 在三个预制墙体样本上使用准静态循环负荷测试进行实验调查.
- 分析不同初始PT力和预应力紧力对墙壁行为的影响.
主要成果:
- 自中心的墙壁表现出最小的损坏和小的残余漂移.
- 墙壁的能量消散能力符合指定的要求.
- 增加的初始PT力提高了自中心化和承载能力;更高的紧力改善了能量消散.
结论:
- 拟议的具有SPFD的自中心墙在减少钢筋混凝土切割墙的地震损伤和残余漂移方面是有效的.
- 该系统表现出良好的能量消耗能力,符合设计规格.
- 开发了一种经过验证的预制墙承载能力计算方法,有助于未来的设计.
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