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唐曹铁路南堡特大桥顺利合龙 预计12月18日通车
2017-09-01 09:11:43 中国经济网
图为合龙现场。
8月31日,中建二局土木公司承建的唐曹铁路南堡跨世纪路特大桥简支拱顺利合龙。这是唐曹铁路全线唯一采用“卧拼竖转”工艺的简支拱。此次合龙为唐曹铁路年内建成通车提供了保证。
此次合龙的简支拱位于南堡经济开发区,是唐曹铁路全线的重点控制性工程,施工难度极大,上方斜向跨越三条 110千伏高压线,且线路最低与下方拱肋垂直高差只有7.1米,常规支架法拱肋施工方案无法实施。该项目采用的是“卧拼竖转”施工的全新工艺,在梁上将平放的拱肋提前焊接完成,在拱肋预埋处安装扭转工具,利用千斤顶,将拼好的拱肋竖转安装,有效减小了拼装要求的高度,降低了施工风险。
据唐曹铁路总经理、指挥长李卫天介绍,唐曹铁路预计9月28日贯通、12月18日通车。唐曹铁路建成后,曹妃甸将有两条路线直通北京:一条是由曹妃甸出发,经唐山站、天津站,直达北京南站;另一条同样由曹妃甸出发,经唐山站、唐山北站,直达北京站。无论选择哪条路线,曹妃甸到北京的动车通达时间都将为100分钟左右,极大满足群众出行需求。
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