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Impact of Cross-Tie Properties on the Modal Behavior of Cable Networks on Cable-Stayed Bridges

机译:交叉扎带特性对斜拉桥上电缆网络模态行为的影响

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摘要

Dynamic behaviour of cable networks is highly dependent on the installation location, stiffness, and damping of cross-ties. Thus, these are the important design parameters for a cable network. While the effects of the former two on the network response have been investigated to some extent in the past, the impact of cross-tie damping has rarely been addressed. To comprehend our knowledge of mechanics associated with cable networks, in the current study, an analytical model of a cable network will be proposed by taking into account both cross-tie stiffness and damping. In addition, the damping property of main cables in the network will also be considered in the formulation. This would allow exploring not only the effectiveness of a cross-tie design on enhancing the in-plane stiffness of a constituted cable network, but also its energy dissipation capacity. The proposed analytical model will be applied to networks with different configurations. The influence of cross-tie stiffness and damping on the modal response of various types of networks will be investigated by using the corresponding undamped rigid cross-tie network as a reference base. Results will provide valuable information on the selection of cross-tie properties to achieve more effective cable vibration control.
机译:电缆网络的动态行为在很大程度上取决于安装位置,刚度和交叉扎带的阻尼。因此,这些是电缆网络的重要设计参数。尽管过去已经对前两者对网络响应的影响进行了一定程度的研究,但很少研究交叉扎带阻尼的影响。为了理解我们与电缆网络有关的力学知识,在当前研究中,将通过考虑交叉连接的刚度和阻尼来提出电缆网络的分析模型。此外,配方中还将考虑网络中主电缆的阻尼特性。这将不仅可以探索交叉扎带设计在增强所构造的电缆网络的平面内刚度方面的有效性,还可以探索其能量耗散能力。建议的分析模型将应用于具有不同配置的网络。将使用相应的无阻尼刚性横梁网络作为参考基础,研究横梁的刚度和阻尼对各种类型网络的模态响应的影响。结果将为选择交叉扎带特性提供有价值的信息,以实现更有效的电缆振动控制。

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