震动台测试对大型高层建筑的地震性能进行了测试
Laite Sun1,2, Yu Bai3,4, Zhengcong Lai3,4
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, Yunnan, China. druidfm@163.com.
Scientific reports
|March 20, 2024
概括
这项研究使用摇摆表测试研究了大型高层建筑的抗震性能. 粘性阻尼器有效地减少了地震波的影响,提高了结构安全性,并为地震设计提供了宝贵的见解.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 地质技术工程 地质技术工程
背景情况:
- 山区的大型高层建筑面临着独特的地震挑战.
- 由于复杂的波浪通道和斜率放大效应,地震性能至关重要.
- 缓冲系统对于减轻地震引起的力量至关重要.
研究的目的:
- 为了评估一个大跨度高层建筑的抗震性能,具有剪切墙和钢筋结构.
- 研究粘性阻尼器在地震波模拟和能量消散中的有效性.
- 分析波浪通道和斜率放大效应对结构响应的影响.
主要方法:
- 建造了原型结构的1/40尺寸模型.
- 进行了摇摆表测试,以模拟地震波通过和斜率放大.
- 分析包括损坏现象,动态特征和模型的动态响应.
主要成果:
- 粘性阻尼器将地震波延迟约0.4秒,并将其放大约1.6倍,有效模拟现场效应.
- 最大故事漂移比为1 / 1258 (剪切墙) 和1 / 455 (钢结构) 服务性极限状态 (SLE).
- 最大故事漂移比为1/568 (剪切墙) 和1/185 (钢结构) 对于最大考虑的地震 (MCE),证明了阻尼器的有效性.
结论:
- 该研究成功地模拟了使用阻尼器的波浪通道和斜率放大效应.
- 缓冲装置在能量消耗中起到了至关重要的作用,提高了地震性能.
- 这些发现为地震设计和测试类似的大高层建筑提供了宝贵的参考.
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