河北衛視:崇禮鐵路全線箱梁架設完畢
  時間:2018-10-11  點擊量:   
【字體:

河北衛視:http://tv.cntv.cn/video/C11135/e8bbfcc1ecd24941997eab4d00d7c4d4

10月8日,經過230名建設者436天日夜艱苦奮戰,由中鐵二十局二公司負責施工的北京2022冬奧重點配套工程——崇禮鐵路全線箱梁架設完工,為新中國69華誕獻上了一份厚禮。

崇禮鐵路全長53公里,設計時速250公里,位于河北張家口地區境內,二公司承擔線路全長30公里,其中箱梁制運架519孔,單線梁需制運架140孔、雙線379孔,建設者攻克了制運架梁高空作業安全風險大、架梁坡度大、多處交叉作業施工難度大的三大難題。

針對雙線重載梁運輸難度大難題,建設者對設計3.0%坡度橋梁采取對運梁車發動機功率倍速增大技術革新舉措,將原高壓氣制動改為液壓制動,確保了運輸施工進度安全;同時對雙線梁架橋機過孔移梁組件、載荷電機等進行了升級改進措施,保證了箱梁架設過孔時承載負荷平穩、參數精、速度快、功率高。

針對單線重載梁車沿線穿越兩條隧道、17段路基等交叉作業多難題,建設者應用BIM建模技術平臺科學管理,對重載梁車用施工指揮車拉警報、喇叭喊話等措施開辟通道,同時配備4臺運梁車、2臺單線架橋機夜以繼日推進,刷新了以日架設8孔最高記錄,創造了該公司最后一個節點目標圓滿完成,實現了質量零缺陷、安全零事故目標。

據悉,崇禮鐵路到2019年年底開通后,將與全長174公里京張高鐵主線一起形成北京至張家口太子城奧運村最便捷客運通道,屆時從北京乘高鐵到張家口崇禮看冬奧盛會僅需1小時


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