开发和验证一个新的OpenSees元件模型,用于一个双阶段摩擦摆形轴承
Hanzlah Akhlaq1,2, Tianbo Peng3,4, Boyang Yan1
1College of Civil Engineering, Tongji University, Shanghai, 200092, China.
Scientific reports
|July 2, 2025
概括
开发了一种新的两级摩擦摆形轴承 (TSFPB) 模型用于地震隔离,准确模拟桥梁对中度和重度地震的反应. 这种经过验证的模型增强了关键基础设施的地震隔离设计.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 计算力学 计算力学 计算力学
背景情况:
- 桥梁是重要的交通基础设施,需要强有力的地震安全措施.
- 由于商业软件中新元素的可用性有限,现有的地震隔离技术面临实施挑战.
- 对地震隔离元件的准确建模对于有效地减轻桥梁地震损害至关重要.
研究的目的:
- 在OpenSees环境中开发和验证用于双阶段摩擦摆形轴承 (TSFPB) 的非线性元素模型.
- 创建适合中度和严重地震强度的多功能地震隔离解决方案.
- 根据理论,数值和实验数据验证开发的模型.
主要方法:
- 为TSFPB开发一个理论模型,以解释其机制.
- 在C++中实现非线性TSFPB元素模型,并集成到OpenSees.
- 在ABAQUS中创建一个数值模型,用于原型前的稳定性和应力分析.
- 进行全面的实验室测试,用于模型验证.
主要成果:
- 开发的TSFPB非线性元素模型在模拟地震反应方面表现出高精度.
- 模型预测和实验结果之间的差异始终低于10%.
- 该ABAQUS模型提供了可靠的稳定性和应力条件的原型前评估.
结论:
- 经过验证的TSFPB非线性元素模型对于地震隔离设计是准确和可靠的.
- TSFPB轴承对一系列地震强度有效,为桥梁提供了实用的解决方案.
- 这项研究有助于在现实结构中实施先进的地震隔离策略.
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