Feasibility of Optimum Design of Shandong Cable Sandwich Bridge Frame

山東電纜橋架的選取需思索兩個重要目標，即：，電纜橋架的承載才能應滿足任務均布載荷小于額外均布載荷要求，當其支吊架的實踐跨距不等于2 m時，則任務均布荷載應滿足要求;并且，應能順應不同的環境要求和有較長的運用壽命。目前通常的選取準繩爲：爲了進步電纜橋架的承載才能，普通經過選擇適當厚度的架構板材來完成;而其環境和運用壽命要求則經過選擇相應的特種原材來到達設計目的要求。重腐蝕環境普通選用玻璃鋼或鋁合金作爲電纜橋架主材，慣例腐蝕環境則選用鋼質資料作爲其主材，而鋼制電纜橋架依據其耐腐蝕等級又分可分爲熱浸鍍鋅、熱固性粉末靜電噴涂、噴漆、電鍍鋅等防腐處置方式

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.

單芯電纜的支架要求

Support requirements for single-core cables

鐵路客運專線牽引供電零碎采用的中壓電纜均爲單芯電纜，爲防止其發生閉合磁性回路，優化方案采用“豐”字型支架，既保證了承載要求，機械功能良好，且防止了閉合磁路的構成。

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.

運營維護

Operation and maintenance

傳統橋架層式構造，由于犬牙交錯，山東電纜橋架的較高，與電纜夾層頂部空間狹小，維護巡檢人員難以從橋架上經過，給日常巡檢帶來了諸多方便。優化后的橋架別離式布局構造，空間上無效別離，巡檢人員可從吊架下方自在經過，其中壓橋架“豐”字形架橋較傳統層架式構造更易于察看，從而使夾層內電纜巡檢更爲便當。

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.

開放網格式橋架讓每一束線纜都能明晰展露，便于片面管控布線施工質量，且在運營進程中一旦發作毛病，可以疾速確定毛病點，并及時采取相應措施。

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.

開放網格式橋架允許從恣意點出線，便于和機柜、機架銜接，而且能依據需求隨意更改出線點，普通線槽則必需在出線點鉆孔，影響較大。

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.

開放式橋架便于在機房內運用。由于所亭機房在晉級擴建時，其線纜挪動、增減和變卦繁瑣，若采用傳統線槽，兩個橋架銜接處，每個接口多需添加8顆接口銜接螺栓，甚更多，晉級改造困難，同時對既有設備影響較大，不利于平安運營維護。

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.

更多的關于山東電纜橋架問題或者詳細的內容，請關注我們濟南航豐實業有限公司的網站：http://m.zkhtkj.cn謝謝!!

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