隔离和非隔离的低层墙体结构的摇摆表试验
Zheng Yao1, Wang Ruoxi2, Zhang Youchao3
1School of Urban and Rural Planning and Architectural Engineering, ShangLuo University, ShangLuo, PR China.
Scientific reports
|November 19, 2025
概括
这项研究测试了制轴承 (LRB) 和结构的地震隔离. 振动表测试证实LRB显著减少地震损伤和建筑物的顶层加速.
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:
- 石结构易受地震活动的影响,因此需要在地震期间提高安全性和功能性保留.
- 传统的抗震改装方法对于中度至严重的地震事件可能并不总是足够的.
研究的目的:
- 系统地研究轴承 (LRB) 的机械性能.
- 通过摇摆表测试,评估LRB在结构上的地震隔离效果.
- 验证低层造建筑的地震隔离系统的设计.
主要方法:
- 设计并测试了五个直径小的制轴承 (LRBs),以确定机械性能,如刚性和阻尼.
- 在典型的两层房模型上进行了1:2规模的摇桌测试,比较了隔离和非隔离的配置.
- 在各种地震波下利用了响应频谱分析,数值模拟和传感器数据 (加速,位移,剪切力).
主要成果:
- 标记号码 标记号码 标记号码 4表现出稳定的垂直压缩刚性,完全歇斯底里,以及有效的减压 (系数<0.4).
- 孤立的模型表现出较低的自然频率 (约. 25%的非隔离) 和显著减少加速 (高达48%的顶层) 和排位 (高达40%).
- 使用LRB+无摩擦滑动轴承 (FSB) 的地震隔离有效地降低了不同地震波激发下的结构反应.
结论:
- 制轴承 (LRB) 有效地提高了结构的抗震性能.
- 经过测试的地震隔离系统显著减少了土建筑中的地震引起的加速和位移.
- 该研究验证了基于LRB的地震隔离对低层体结构的设计和有效性.
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