【正文】 ，在高速接觸網(wǎng)中，幾何關(guān)系是弓網(wǎng)安全運行的基礎(chǔ)，要想保證受流質(zhì)量，弓網(wǎng)系統(tǒng)在高速運行下的動態(tài)特性、電氣穩(wěn)定性、機械穩(wěn)定性是核心。在高速運行 時，該處就是一個集中硬點。根據(jù)計算和試驗，吊弦密度太疏了效果不好，因為接觸線存在自重負載的影響，在兩根吊弦之間要產(chǎn)生寄生弛度，這種寄生弛度和吊弦的支持作用，造成受電弓運行的不平滑性。負荷不確定性對接觸網(wǎng)的壽命和安全造成較大的負面影響。 了解高速接觸網(wǎng)與普速接觸網(wǎng)的主要異同點 ，學(xué)習(xí)高速鐵路接觸網(wǎng)施工的關(guān)鍵技術(shù)。 接觸網(wǎng)平面設(shè)計是接觸網(wǎng)設(shè)計的重要環(huán)節(jié)，是施工工程的重要依 據(jù)，是高速電氣化鐵路接觸網(wǎng)設(shè)計中的關(guān)鍵技術(shù)。另外，在設(shè)計后期，本文對接觸網(wǎng)的特點進行了分析，對高速接觸網(wǎng)與普速接觸網(wǎng)的主要差異進行了探討，對高速鐵路接觸網(wǎng)部分施工關(guān)鍵技術(shù)進行了闡釋，為設(shè)計和施工提供必要的參考與指導(dǎo)。接觸網(wǎng)設(shè) 計特別是高速接觸網(wǎng)設(shè)計過程包含了大量的設(shè)計計算、繪圖、校驗 等工作。本設(shè)計是基于 CAD 制圖系統(tǒng)進行站場接觸網(wǎng)的平面設(shè)計，完成了 福廈城際 A 站 的 250km/h 高速鐵路接觸網(wǎng)平面布置圖的設(shè)計和繪制。s Plane Design of catenary, pleted the Fuxia A station 250km/h highspeed railway catenary floor plan design and drawing. This design is the use of AutoCAD2021 as mapping tools, according to the corresponding results, station weather conditions and geological conditions on the line and station lines are related to the choice of the span, pillar layout and type selection and the anchor length of the division, Then in accordance with the relevant requirements of the design manual column in the table on the side of the gauge, pillar type, geology, such as installation of the corresponding figure number expressed. Highspeed catenary and the normalspeed catenary design or construction, have a lot of difference. Therefore, the technology which this design used does not make use of by the normalspeed catenary the same time, pay attention to all aspects of design considerations to enable the design of technical, economic, and aesthetic aspects of basic requirements to meet. In addition, late in the design, the paper touches the characteristics of catenary, discussed the mayor differences between the highspeed catenary and the normalspeed catenary, explained the key technology of the highspeed railway catenary construction to provide necessary reference and guidance. Key words Highspeed railway； Catenary； Plane design； CAD 第 III 頁 目錄 第 1 章 緒論 .................................................................................................................. 1 高速接觸網(wǎng)的特殊性 ..................................................................................... 1 高速接觸網(wǎng)的技術(shù)特征 ................................................................................. 3 高速接觸網(wǎng)與普速接觸網(wǎng)的主要差異 ......................................................... 4 第 2 章 接觸網(wǎng)平面設(shè)計的相關(guān)計算 .......................................................................... 6 原始資料 ......................................................................................................... 6 接觸網(wǎng)負載計算 ............................................................................................. 6 線索資料 ............................................................................................ 6 其他相關(guān)資料 .................................................................................... 7 負載計算 ............................................................................................ 7 吊弦計算 ......................................................................................................... 8 基本條件分析 .................................................................................... 8 參數(shù)說明 ............................................................................................ 9 計算內(nèi)容 ............................................................................................ 9 第 3 章 福廈 A 站接觸網(wǎng)站場平面設(shè)計 .................................................................... 12 站場接觸網(wǎng)平面設(shè)計程序 ........................................................................... 12 硬橫跨的選擇 ............................................................................................... 13 硬橫跨結(jié)構(gòu)型式及組成： ........................................................................... 13 線索選取 ....................................................................................................... 14 單線支柱選用 ............................................................................................... 15 支柱基礎(chǔ)選用 ............................................................................................... 16 錨段的劃分 ................................................................................................... 17 錨段關(guān)節(jié) ....................................................................................................... 18 五跨絕緣錨段關(guān)節(jié) .......................................................................... 18 四跨非絕緣錨段關(guān)節(jié) ...................................................................... 19 之字值與拉出值的確定 ............................................................................... 19 跨距選擇 ..................................................................................................... 20 咽喉區(qū)放大圖 ............................................................................................. 20 線岔選用 ..................................................................................................... 21 交叉線岔布置 ................................................................................ 21 無交叉線岔 .................................................................................... 23 隧道中的平面布置 ..................................................................................... 24 接觸線高度與結(jié)構(gòu)高度的選擇 ................................................................. 24 接觸線高度 .................................................................................... 24 結(jié)構(gòu)高度 ........................................................................................ 25 側(cè)面限界的選用 ......................................................................................... 25 懸掛方式的選定 ......................................................................................... 25 安裝圖號 ..................................................................................................... 26 下錨柱安裝參考圖號 .................................................................... 26 道岔柱安裝參考圖號 .................................................................... 27