Feasibility of Optimum Design of Shandong Cable Sandwich Bridge Frame

山东电缆桥架的选取需思索两个重要目标，即：，电缆桥架的承载才能应满足任务均布载荷小于额外均布载荷要求，当其支吊架的实践跨距不等于2 m时，则任务均布荷载应满足要求;并且，应能顺应不同的环境要求和有较长的运用寿命。目前通常的选取准绳爲：爲了进步电缆桥架的承载才能，普通经过选择适当厚度的架构板材来完成;而其环境和运用寿命要求则经过选择相应的特种原材来到达设计目的要求。重腐蚀环境普通选用玻璃钢或铝合金作爲电缆桥架主材，惯例腐蚀环境则选用钢质资料作爲其主材，而钢制电缆桥架依据其耐腐蚀等级又分可分爲热浸镀锌、热固性粉末静电喷涂、喷漆、电镀锌等防腐处置方式

The selection of cable bridge in Shandong Province needs to consider two important objectives: first, the load-bearing capacity of cable bridge should meet the requirements of task uniform load less than additional uniform load; when the practical span of its support and hanger is not equal to 2 m, task uniform load should meet the requirements; moreover, it should be able to meet different environmental requirements and have a longer service life. At present, the usual selection criterion is: in order to improve the carrying capacity of cable bridge, it is usually completed by choosing appropriate thickness of frame plate; and its environment and service life requirements are achieved by choosing the corresponding special raw materials to meet the design requirements. In heavy corrosion environment, fiberglass reinforced plastics or aluminium alloys are commonly used as the main materials of cable bridge, while in conventional corrosion environment, steel materials are used as the main materials. According to their corrosion resistance, steel cable bridge can be divided into hot dip galvanizing, thermosetting powder electrostatic spraying, spraying paint, galvanizing and other anti-corrosion treatment methods.

单芯电缆的支架要求

Support requirements for single-core cables

铁路客运专线牵引供电零碎采用的中压电缆均爲单芯电缆，爲防止其发生闭合磁性回路，优化方案采用“丰”字型支架，既保证了承载要求，机械功能良好，且防止了闭合磁路的构成。

The medium-voltage cables used in the traction power supply of railway passenger dedicated line are single-core cables. In order to prevent the occurrence of closed magnetic circuit, the "Feng" type bracket is adopted in the optimization scheme, which not only ensures the load-bearing requirement, but also has good mechanical function and prevents the formation of closed magnetic circuit.

运营维护

Operation and maintenance

传统桥架层式构造，由于犬牙交错，山东电缆桥架的较高，与电缆夹层顶部空间狭小，维护巡检人员难以从桥架上经过，给日常巡检带来了诸多方便。优化后的桥架别离式布局构造，空间上无效别离，巡检人员可从吊架下方自在经过，其中压桥架“丰”字形架桥较传统层架式构造更易于察看，从而使夹层内电缆巡检更爲便当。

Traditional bridge deck structure, due to the staggered teeth, Shandong cable bridge is higher, and the top space of cable sandwich is narrow. It is difficult for maintenance inspectors to pass through the bridge deck, which brings a lot of convenience to routine inspection. Optimized bridge separation layout structure, ineffective separation in space, patrol personnel can pass through from below the suspension frame, in which the pressure bridge "Feng" shaped bridge is easier to inspect than the traditional layer structure, so that cable inspection in the interlayer is more convenient.

开放网格式桥架让每一束线缆都能明晰展露，便于片面管控布线施工质量，且在运营进程中一旦发作毛病，可以疾速确定毛病点，并及时采取相应措施。

Open grid bridge allows each cable to be clearly exposed, facilitating one-sided control of wiring construction quality, and in the course of operation once a fault occurs, it can quickly identify the fault points, and take appropriate measures in time.

开放网格式桥架允许从恣意点出线，便于和机柜、机架衔接，而且能依据需求随意更改出线点，普通线槽则必需在出线点钻孔，影响较大。

Open grid type bridge allows arbitrary point out of line, easy to connect with cabinet and frame, and can change the point out of line at will according to demand. Ordinary line groove must drill holes at the point out of line, which has great influence.

开放式桥架便于在机房内运用。由于所亭机房在晋级扩建时，其线缆挪动、增减和变卦繁琐，若采用传统线槽，两个桥架衔接处，每个接口多需添加8颗接口衔接螺栓，甚更多，晋级改造困难，同时对既有设备影响较大，不利于平安运营维护。

Open bridge is easy to use in the computer room. Because of the complexity of cable movement, increase and decrease and change in the promotion and expansion of Suoting computer room, if the traditional cable groove is used and two bridge joints are used, at most eight connection bolts are added to each interface, or even more. It is difficult to upgrade and renovate the existing equipment. At the same time, it has a great impact on the existing equipment and is not conducive to safe operation and maintenance.

更多的关于山东电缆桥架问题或者详细的内容，请关注我们济南航丰实业有限公司的网站：http://www.sdhangfeng.com谢谢!!

For more details about the cable bridge in Shandong, please pay attention to our website of Jinan Hangfeng Industrial Co., Ltd. http://www.sdhangfeng.com, thank you!