Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cooperative damping vibration attenuation method for wind-induced vibration of super-long stay cable
The invention relates to the technical field of bridge vibration reduction, in particular to a cooperative damping vibration reduction method for wind-induced vibration of an ultra-long stay cable, which comprises the following steps of: determining a controlled modal order of the wind-induced vibration of the stay cable on the basis of a Struhal number; based on the controlled modal order and the linear viscous damper model, the number of dampers and the preliminary design installation position ratio are determined; according to bridge structure construction and damper installation conditions, determining and designing damper types and collaborative arrangement modes; and based on the design installation position ratio corresponding to the design damper type, whether the cooperative vibration reduction damping of the damper meets the vibration reduction requirement or not is judged, and if not, the design installation position ratio is adjusted till the cooperative vibration reduction damping meets the vibration reduction requirement. According to the method, the problems that in the prior art, the controlled modal order of the overlong stay cable is not clear, and vibration of all controlled modals of the stay cable is difficult to effectively control through combined vibration reduction measures can be solved.
本发明涉及桥梁减振技术领域，具体涉及一种超长斜拉索风致振动的协同阻尼减振方法，该方法包括以下步骤：基于Strouhal数，确定斜拉索风致振动被控模态阶数；基于被控模态阶数和线性黏滞阻尼器模型，确定阻尼器的数量和初步设计安装位置比；根据桥梁结构构造和阻尼器安装条件，确定设计阻尼器类型及协同布置方式；基于设计阻尼器类型对应的设计安装位置比，判断阻尼器的协同减振阻尼是否满足减振要求，若否，则调整设计安装位置比，直至协同减振阻尼满足减振要求。本方法能够解决现有技术中超长斜拉索的被控模态阶数不明确以及组合减振措施难以有效控制拉索所有被控模态的振动问题。
Cooperative damping vibration attenuation method for wind-induced vibration of super-long stay cable
The invention relates to the technical field of bridge vibration reduction, in particular to a cooperative damping vibration reduction method for wind-induced vibration of an ultra-long stay cable, which comprises the following steps of: determining a controlled modal order of the wind-induced vibration of the stay cable on the basis of a Struhal number; based on the controlled modal order and the linear viscous damper model, the number of dampers and the preliminary design installation position ratio are determined; according to bridge structure construction and damper installation conditions, determining and designing damper types and collaborative arrangement modes; and based on the design installation position ratio corresponding to the design damper type, whether the cooperative vibration reduction damping of the damper meets the vibration reduction requirement or not is judged, and if not, the design installation position ratio is adjusted till the cooperative vibration reduction damping meets the vibration reduction requirement. According to the method, the problems that in the prior art, the controlled modal order of the overlong stay cable is not clear, and vibration of all controlled modals of the stay cable is difficult to effectively control through combined vibration reduction measures can be solved.
本发明涉及桥梁减振技术领域，具体涉及一种超长斜拉索风致振动的协同阻尼减振方法，该方法包括以下步骤：基于Strouhal数，确定斜拉索风致振动被控模态阶数；基于被控模态阶数和线性黏滞阻尼器模型，确定阻尼器的数量和初步设计安装位置比；根据桥梁结构构造和阻尼器安装条件，确定设计阻尼器类型及协同布置方式；基于设计阻尼器类型对应的设计安装位置比，判断阻尼器的协同减振阻尼是否满足减振要求，若否，则调整设计安装位置比，直至协同减振阻尼满足减振要求。本方法能够解决现有技术中超长斜拉索的被控模态阶数不明确以及组合减振措施难以有效控制拉索所有被控模态的振动问题。
Cooperative damping vibration attenuation method for wind-induced vibration of super-long stay cable
一种超长斜拉索风致振动的协同阻尼减振方法
LIU PENGFEI (Autor:in) / YANG LIN (Autor:in) / SHENG NENGJUN (Autor:in) / WANG ZHENGXING (Autor:in) / ZHAO HAIWEI (Autor:in) / LI DONGCHAO (Autor:in) / WANG ZEHAO (Autor:in) / WANG RUCHENG (Autor:in) / JIN CHAO (Autor:in)
07.04.2023
Patent
Elektronische Ressource
Chinesisch
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