Abstract The use of a cross-tie is one of the effective countermeasures to suppress the undesired stay cable vibrations. It has been successfully applied on different cable-stayed bridges but the mechanics behind the cross-tie are not fully understood. Most of the studies dedicated to understand the dynamic behavior of the cable network assumed the main cables as taut cables. This assumption is acceptable on small to medium-sized cable-stayed bridges, however, in case of long span bridges, this assumption is unjustified. Therefore, in the current study, the in-plane modal behavior of a cable network is explored by considering the cable sag. An analytical approach is used to develop the characteristic equation of a basic sagged cable network. The in-plane modal behavior of the sagged cable network is compared with the taut cable network and also with the single sagged cable. The role of different system parameters, mainly the cross-tie stiffness and the cable sag, is explored to understand the in-plane modal behavior of a sagged cable network. During the parametric study, a comparison is also drawn with the conventional taut cable network and an in-depth discussion is made to discuss the role of different system parameters.

中文翻译：

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低下垂电缆网络关键系统参数的面内线性动态特性及影响

摘要 使用拉杆是抑制斜拉索非预期振动的有效措施之一。它已成功应用于不同的斜拉桥，但尚未完全了解横拉杆背后的力学原理。大多数致力于了解电缆网络动态行为的研究都假设主电缆为拉紧电缆。这种假设在中小型斜拉桥上是可以接受的，但是，在大跨度桥梁的情况下，这种假设是不合理的。因此，在当前的研究中，通过考虑电缆垂度来探索电缆网络的平面内模态行为。分析方法用于开发基本下垂电缆网络的特征方程。下垂电缆网络的面内模态行为与拉紧电缆网络以及单根下垂电缆进行了比较。探索不同系统参数的作用，主要是横梁刚度和电缆下垂，以了解下垂电缆网络的平面内模态行为。在参数研究过程中，还与传统的绷紧电缆网络进行了比较，并进行了深入的讨论，以讨论不同系统参数的作用。