Based on the analysis of derivation of calculating theory of steel rod, the sag discounting coefficient a is suggested to consider the moment stiffness of steel rod. Furtherly, the amended-element is formed in view of coefficient a and it`s a little more accurate than user-element. The length formula of steel rod is deduced with a view to coefficient a on basis of the formula of soft-cable.
通过对钢棒计算理论的推导，提出使用垂度折减系数a来引入钢棒抗弯刚度的影响，并进一步指出其两大影响因素；在此基础上，考虑系数a，形成修正索单元，并证明其对提高计算精度有一定的帮助；以柔索索长计算公式为基础，引入系数a，推导了钢棒索长的计算公式，对比计算表明引入系数a对索长计算有一定的影响。
The computation results of the first kind of stability in the two kinds of construction plan are researched. The stability of the construction stages in which considered the geometric nonlinearity only is analyzed. And the influence on stability of cable sag effect is researched. The buckling configuration of the longest double cantilever stage, longest single cantilever stage and second term dead load stage are paid great attention to. For the construction control plan, geometric nonlinearity and material nonlinearity are both considered and the stability of construction stage is researched. The buckling configuration of the longest double cantilever stage and longest single cantilever stage are also paid great attention to. The influence on stability of the boundary nonlinearity which arises from the single direction force of the construction temporary bracket pivot in the construction process is analyzed.
研究了两种施工方案下结构第一类稳定性计算结果的特点：分析了结构在各施工阶段仅考虑几何非线性的稳定性，研究了在此情形下斜拉索垂度效应对稳定性计算的影响，并重点考察了结构在最大双悬臂、最大单悬臂、二期恒载阶段的失稳形态；对施工控制的施工方案，同时考虑几何非线性、材料非线性，研究了结构在施工过程中的稳定性，并重点考察了结构在最大双悬臂、最大单悬臂阶段的失稳形态；分析了在施工过程中由于施工临时支架支点的单向受力特性引起的边界非线性因素对结构稳定性的影响。
With the assumption of equivalent linearization, the systems wind-induced respons are analysized in frequency-domain, and the result shows that the analysis in frequency-domain is accurate while the cable is tensioned and the sag is small.
在等效线性化的基础上对塔线体系的风振响应进行频域分析，结果表明导线张力较大、垂度较小时，塔线体系的频域计算结果也能达到较高的精度。
The mechanical calculation of ADSS fiber optic cable is introduced and the calculation formulae for sag, tension, strain and slack length etc are given.
介绍了ADSS光缆的力学计算，给出了光缆弧垂、张力、应变和悬长等计算公式，并对普遍采用的“悬链线”和“抛物线”两种计算方法加以比较。
Finally, the effects of the initial angle of incidence and cable sag on aerostatic stability of Ting Kau Bridge are discussed.
最后，探讨了初始风攻角对汀九桥静风稳定性的影响。
After considering the flexural rigidity、boundary condition and cable sag effect, the free vibration equation of cable is a nonlinear equation, the relation of the free vibration frequency and cable tension is a transcendental equation, and it can not be solved directly.
考虑抗弯刚度、边界条件和垂度影响，索的自由振动方程是一个非线性方程，索的自振频率与索力的关系是一个超越方程，不能直接求解。
Some typical cables of cable-stayed bridges are investigated. The results demonstrate that 1:1 internal resonance may occur and both the resonance frequency range and the response amplitude are related with the initial sag of cable.
对典型斜拉桥拉索进行了计算，结果表明：拉索可能产生1：1内共振，共振频率区间及振动幅值与索的垂度大小有关；
With the fixed stiffness, sag, temperature and so on, survey precision of the tension force of the cable is determined by the sample rate and the sample length of the vibration signal.
在刚度、垂度及温度等边界条件一定的条件下，拉索索力测量精度主要由振动信号数据采集的频率和采样时间决定。
These are prestress in cables, sag of cables, rise of arches, the vertical flexible stiffness of arches and the axial stiffness ratio between the cable and the arch.
这些参数为索预应力、索垂度、拱矢高、拱竖向抗弯刚度以及索和拱的轴向刚度比。
Parabolic cable element was applied in this method to sufficiently consider the effects of sag.
同时采用抛物线索单元，考虑了索的垂度效应。
It was found that the dynamic characteristics of single-span suspension bridge were determined by the cable sag and several dimensionless parameters, namely the elastic parameters of main cable, relative stiffness of stiffening girder to main cable, and the coefficient of spatial distribution of dead load.
无量纲振动方程表明，单跨悬索桥动力特性由主缆垂度和几个无量纲参数决定，即主缆的弹性拉伸参数、加劲梁关于主缆的相对刚度及恒载空间分布系数。
Application of Catenary Solution in sag adjustment of suspension cable
悬链线解答在悬索垂度调整中的应用
The main research contents and results in this paper are as follows. (1) Considering of the large cable sag effect, the deflection curve of the conductors in the static state was obtained by force analysis.
本文主要进行的研究内容和研究成果有以下几个方面：（1）考虑导线的大垂度的特性，对导线进行受力分析，得出导线静态下的垂度曲线。
The dynamic voltage restorer is designed as unilateral energy flow equipment which can compensate continuous voltage sag or swell resulted from the voltage drop of power cable.
动态电压恢复器采用单向馈能电路结构，可以在能量单向流动的情况下，实现对因电缆压降而产生的电压暂降或暂升的持续补偿。
Analysis of the Sag of Overhead Cable for Ropeway
架空索道缆索的挠度分析
Nonlinear Predictive Control of Small Sag cable with Axial Displacement
具有轴向位移小垂度索非线性预测控制
The Active Control of Small Sag Cable Vibrations and Its Uncontrollable Motions
小垂度索振动主动控制及其不可控运动研究
Dynamic Response of the Axially Moving Cable with Small Sag
轴向运动小垂度索动力响应
Based on a mathematical model that describes the three dimensional response of the axially moving cable with small sag and on the concept of wave propagation, an exact solution for the linear, in plane transverse vibration of the axially moving cable with general boundary conditions is obtained.
基于轴向运动小垂度索三维动力模型与波传播概念，求得一般边界条件下索横向振动的精确解。
Dynamic Modeling and Simulation of Flexible Cable With Large Sag
大垂度柔索的动力学建模与仿真