垂度

According to theory analysis and example computation, the following conclusions are obtained.1. During the analysis on the cable shape in the suspension bridge"s completion state, the pre-displacement of saddle and the case that the cable and stiff girder commonly bear the second-stage dead load should be considered.2. When supposing the construction ideal initial state in the first time, if the initial state model is established according the cable"s span central sag in the bridge"s completion state, and the reasonable correction formulation is created in the iteration process, the result can converges fast.3. The cable shape in the bridge"s completion state is not parabolic, nor catenary. It is between parabola and catenary. Actually it is funicular polygon closer to the catenary.

通过理论分析和实例的计算表明：1在悬索桥主缆成桥线形分析过程中，须考虑主塔鞍座的偏位以及二期恒载由主缆和加劲梁共同承担的实际情况；2在第一次假设施工理想初态时，以成桥状态已知的主缆跨中垂度建立施工理想初态模型，同时在迭代计算的过程中，建立合理的修正公式，才能使收敛的速度快：3在成桥状态时主缆的线形既不是抛物线，也不是悬链线，而是介于抛物线与悬链线之间，更接近于悬链线的索多边形。

Also the response amplitude will be changed with the initial conditions due to the nonlinear properties of the cables.Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco-elastic dampers in cable-stayed bridges is investigated by joining the center difference method and the state space strategy. Both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. The space nonlinear vibration equations of the cable-damper system are derived, and anew hybrid method for solving the cable-damper system is presented by combing the Newmark method and Pseudo-force technology. According to the known properties of the cable-damper system, the nonlinear transient responses are analyzed under all kinds of excitations. Based on the transient response, the control effectiveness of the visco-elastic dampers is further demonstrated.

综合考虑了拉索抗弯刚度、垂度的影响，研究了粘弹性阻尼器对斜拉桥拉索的空间振动控制，联合中心差分方法及状态空间法，得出了拉索面内、外振动各阶模态可能达到的最大阻尼比及相应的最优阻尼器系数，并对斜拉桥拉索的阻尼器设计提出了参考建议：考虑拉索抗弯刚度、垂度及几何非线性，导出了索-阻尼器系统的空间振动非线性方程组，结合Newmark方法及伪力(Pseudo-Force)方法，创新地提出了求解非线性方程组的杂交方法，根据拉索-阻尼器系统的阻尼特性，在各种荷载作用下，对索-阻尼器系统的非线性瞬态振动响应进行了研究，从系统响应的角度更加直接地验证了阻尼器的控制效果。

Principle of its structure as shown, via a conveyor belt drive roller and tail roller with the formation of The Promise Ring, up and down a conveyor belt supported by rollers to limit the deflection of the vertical conveyor belt, the tensioning device to provide the required normal operation of a conveyor belt tension.

其结构原理如图所示，输送带绕经传动滚筒和尾部滚筒形成无极环形带，上下输送带由托辊支撑以限制输送带的挠曲垂度，拉紧装置为输送带正常运行提供所需的张力。

In this paper, a finite element model for the analysis of the pipeline suspension bridge was set up with considering the initial internal force and verticality of the staying cable.

本文建立了悬索管桥分析的有限元模型，并考虑了悬索管桥恒载产生的初始内力、拉索垂度等几何非线性因素。

The PSD with high resolution and response enables accurate and dynamic measurement of elevator guide rail straightness and verticality .

该测量系统利用PSD的高分辨率、高响应速度等特点，可以准确、动态地测量电梯导轨的直线度，铅垂度等参数。

This article describes a new method to measure and calculate main cable vertical degree of hydrometric cableway station,and some real application examples are given,hoping that the method would play a certain role in hydrometric cableway use and maintenance for hydrological employees.

根据工作实践，以几何学的原理介绍一种实用的水文缆道站缆道主索垂度的测量和计算方法，并以实例予以说明，以期为基层水文职工维护使用水文缆道起一定作用。

In recent months both Apache and Microsoft have seen sudden dips in hostname market share as huge blocks of bulk-registered domains expired at Zipa and enom.

近几个月来亚帕基印第安人和微软看了突然的垂度在hostname 市场份额如同大块登记的领域巨大的块到期了在Zipa (12月)并且enom (11月)。

Droops affection for cable"s angle and force is analysed and applied droops-modified formula of cable"s angle and force are given.

分析了拉索的自重垂度对其索力和倾角的影响并推导得出索力和倾角的垂度修正实用计算公式。

It brings sufficient tension to conveyer belt, and enables the generation of friction between the conveyer belt and the transmission drum, so that the conveyer belt will not slip.

1使输送带具有足够的张力，保证输送带和传动滚筒问产生摩擦力使输送带不打滑，并限制输送带在各托辊间的垂度，使输送机正常运行。

Self-weight drooping affection on cable"s angle is analyzed. The droops-modified formula of cable"s angle is derived.

分析了拉索的自重垂度对其在梁上倾角的影响，并推导得出梁上倾角的垂度修正实用计算公式。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。