【正文】 ..................................................... 11 設計流程 .................................................................................................... 11 設計原則 ................................................................................................... 11 主要技術(shù)指標 ............................................................................................ 12 自錨式輕型三角掛籃結(jié)構(gòu)組成 ............................................................................. 12 行走裝置 ................................................................................................... 13 三角主桁結(jié)構(gòu) ............................................................................................ 13 主桁后錨系統(tǒng) ............................................................................................ 14 前、后吊桿系統(tǒng) ......................................................................................... 14 模板系統(tǒng) ................................................................................................... 14 張拉平臺 ................................................................................................... 15 掛籃的制造及拼裝 ............................................................................................... 15 制造技術(shù)要求 ............................................................................................ 15 拼裝技術(shù)要求 ............................................................................................ 16 掛籃性能試驗 ...................................................................................................... 16 試驗場地的選擇 ......................................................................................... 16 構(gòu)件單件試驗 ............................................................................................ 17 整體靜載試驗 ............................................................................................ 17 整體走行試驗 ............................................................................................ 18 掛籃安全控制要點 ............................................................................................... 19 施工狀態(tài) ................................................................................................... 19 走行狀態(tài) ................................................................................................... 19 2 箱形連續(xù)剛構(gòu)、連續(xù)梁預應力施工工藝 ......................................................................... 19 預施應力設備 ...................................................................................................... 19 設備的選用 ................................................................................................ 19 千斤頂校驗 ................................................................................................ 20 油壓表的校驗 ............................................................................................ 22 2 預施應力前的各項準備工作 ................................................................................. 23 預施應力有關(guān)數(shù)據(jù)測定 ........................................................................................ 23 孔道摩阻的測試 ......................................................................................... 23 錨具檢驗及摩阻測試 .................................................................................. 25 測定要求 ................................................................................................... 26 預應力施工工藝 .................................................................................................. 26 鋼絞線下料與編束質(zhì)量安全要求 ................................................................ 26 豎向預應力筋加工制作 .............................................................................. 27 預應力筋穿束 ............................................................................................ 27 粗鋼筋張拉 ................................................................................................ 28 張拉質(zhì)量控制 ............................................................................................ 29 張拉注意事項 ............................................................................................ 30 張拉作業(yè)安全注意事項 .............................................................................. 31 3 連續(xù)梁、連續(xù)剛構(gòu)懸臂灌注施工工藝 ............................................................................ 31 連續(xù)梁盆式橡膠支座安裝 .................................................................................... 31 連續(xù)梁臨時支座的設置和拆除 ............................................................................. 32 支座的設置 ................................................................................................ 32 支座的拆除 ................................................................................................ 33 墩頂 0段施工工藝 .............................................................................................. 34 墩旁托架 ................................................................................................... 35 模板 .......................................................................................................... 36 灌筑箱梁混凝土 ......................................................................................... 37 懸臂灌筑梁段施工 ............................................................................................... 37 掛籃拼裝和拆除 ......................................................................................... 39 懸臂灌筑施工 ............................................................................................ 39 鋼筋加工 ................................................................................................... 41 梁體鋼筋綁扎 ............................................................................................ 41 預應力管道的制作與安裝 .....................................................................