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A platform for research: civil engineering, architecture and urbanism
Negative stiffness friction damper and output calculation method
The invention relates to the technical field of building damping, in particular to a negative stiffness friction damper and an output calculation method. By arranging the pre-pressing spring and the friction assembly, the damper has the negative stiffness characteristic; during an earthquake, a horizontal displacement difference is generated between a lower-layer structure and an upper-layer structure of a building, the lower-layer structure of the building drives the negative-rigidity cylinder body to horizontally move, so that the middle plate horizontally moves based on the negative-rigidity cylinder body and the friction cylinder body to drive the pre-pressing spring to elastically deform, and deformation potential energy stored by the pre-pressing spring is released; specifically, a trend of promoting more dislocation separation between the negative stiffness cylinder body and the middle plate is shown, so that the damper has the negative stiffness characteristic; the negative stiffness characteristic of the damper can be judged by calculating the output of the damper, so that the coefficient of the pre-pressing spring is adjusted, and the negative stiffness characteristic of the damper is better.
本发明涉及建筑减震技术领域，具体是一种负刚度摩擦阻尼器及出力计算方法。通过设置预压弹簧和摩擦组件，使阻尼器具有负刚度特性；地震时，建筑的下层结构和上层结构之间产生水平位移差，通过建筑的下层结构带动负刚度缸体水平移动，使中间板基于负刚度缸体和摩擦缸体水平移动，带动预压弹簧发生弹性形变，释放其储存的变形势能，具体表现为一个促进负刚度缸体和中间板之间更加错动分离的趋势，从而使阻尼器具有负刚度特性；通过计算阻尼器出力可以判断阻尼器的负刚度特性，从而调整预压弹簧的系数，使阻尼器的负刚度特性更优。
Negative stiffness friction damper and output calculation method
The invention relates to the technical field of building damping, in particular to a negative stiffness friction damper and an output calculation method. By arranging the pre-pressing spring and the friction assembly, the damper has the negative stiffness characteristic; during an earthquake, a horizontal displacement difference is generated between a lower-layer structure and an upper-layer structure of a building, the lower-layer structure of the building drives the negative-rigidity cylinder body to horizontally move, so that the middle plate horizontally moves based on the negative-rigidity cylinder body and the friction cylinder body to drive the pre-pressing spring to elastically deform, and deformation potential energy stored by the pre-pressing spring is released; specifically, a trend of promoting more dislocation separation between the negative stiffness cylinder body and the middle plate is shown, so that the damper has the negative stiffness characteristic; the negative stiffness characteristic of the damper can be judged by calculating the output of the damper, so that the coefficient of the pre-pressing spring is adjusted, and the negative stiffness characteristic of the damper is better.
本发明涉及建筑减震技术领域，具体是一种负刚度摩擦阻尼器及出力计算方法。通过设置预压弹簧和摩擦组件，使阻尼器具有负刚度特性；地震时，建筑的下层结构和上层结构之间产生水平位移差，通过建筑的下层结构带动负刚度缸体水平移动，使中间板基于负刚度缸体和摩擦缸体水平移动，带动预压弹簧发生弹性形变，释放其储存的变形势能，具体表现为一个促进负刚度缸体和中间板之间更加错动分离的趋势，从而使阻尼器具有负刚度特性；通过计算阻尼器出力可以判断阻尼器的负刚度特性，从而调整预压弹簧的系数，使阻尼器的负刚度特性更优。
Negative stiffness friction damper and output calculation method
负刚度摩擦阻尼器及出力计算方法
XU JIANXIU (author) / LI FUWEI (author) / MO SHAOJIE (author)
2024-12-27
Patent
Electronic Resource
Chinese
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