基于压力传感的可调智能轴承的设计和监控应用
Shu Li1,2, Zaiyu Zhang1,2, Luyi Gan2
1School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
一个新的智能轴承实时监测桥梁轴承反应力 (BRF),防止翻转风险. 这种可调节的系统通过主动管理负载分布和减轻桥梁沉降和热膨胀的风险来提高结构安全性.
科学领域:
- 结构工程 结构工程
- 土木工程 土木工程是指土木工程.
- 桥梁工程 桥梁工程
背景情况:
- 单,双轴承桥梁面临由于混凝土爬行,热膨胀和基础沉降而翻倒的风险,这种风险因异常的车辆负载而加剧.
- 目前的桥梁健康监测系统在准确测量轴承反应力 (BRF) 和实施有效的风险减轻策略方面存在局限性.
研究的目的:
- 分析桥梁翻转机制,开发实时监控和风险控制的先进解决方案.
- 引入可调节的智能轴承系统,克服现有轴承的被动监控局限性.
主要方法:
- 在负载条件不利的情况下对桥梁翻转机制进行了全面分析.
- 开发并分析了一种可调节的智能轴承,利用压力传感和自锁原理.
- 通过在案例研究桥上进行移动负载实验来验证系统的性能.
主要成果:
- 智能轴承的力度测量功能准确地捕获了动态BRF变化 (±0.1%的FS精度) 并检测了瞬间冲击.
- 高度调节功能在1.2毫米范围内修改了高达40kN的反应力,改善了桥梁负载分布.
- 证明了系统对实时监控和主动风险调整的可靠性.
结论:
- 开发的智能轴承有效地解决了桥梁中被动监控系统的局限性.
- 实时BRF监控和主动风险调整能力显著提高了桥梁的安全性,并防止翻转.
- 该研究验证了一种用于桥梁智能结构健康监测的新方法.
相关概念视频
Bearings: Problem Solving
272
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
272
Bearing Stress
736
Bearing stress refers to the contact pressure between two separate bodies. To visualize this, imagine a bolt thrust through a plate. The bolt applies a force to the plate, which exerts an equal but opposite force back onto the bolt. This force isn't just a singular entity but a compilation of numerous smaller forces distributed across the contact surface between the bolt and the plate.
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
736
Journal Bearings
634
Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
To better understand the concept of journal bearings, consider a rope winch with dry or...
634
Pivot Bearings
1.2K
In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
1.2K
PD Controller: Design
184
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
184
Collar Bearings
1.2K
Collar bearings are essential in various machines designed to support axial loads on rotating shafts. Depending on the specific application and requirements, they can be found with single or multiple collars.
1.2K


