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杭瑞高速湖南洞庭湖大桥合龙
2017-08-15 17:08:54 中国青年网
新华社长沙8月15日电(记者史卫燕)我国高速公路主干线——杭瑞高速公路控制性工程洞庭湖大桥15日合龙,这意味着贯穿我国东西方向的杭瑞高速公路即将全线通车。
15日上午,随着最后一节钢桁梁吊装就位,全长2390米的洞庭湖大桥桥面合龙。洞庭湖大桥采用双塔双跨不对称悬索桥结构,主跨1480米,钢梁长度1933.6米,是目前国内第一、世界第二大跨径钢桁梁悬索桥。
据了解,大桥首创轻型组合桥面,解决钢结构疲劳开裂和铺装层破损两大难题。洞庭湖大桥悬索桥塔如同排箫竖管,采用“潇湘琴韵”的造型,与洞庭自然美景结合,大桥为双向六车道高速公路,预计今年年底通车,通车后杭瑞高速将实现全线通车。
杭瑞高速是我国高速公路网中的一条东西主干线,起于浙江杭州,经安徽、江西、湖北、湖南、贵州,终于云南瑞丽。全程2963公里,目前除洞庭湖大桥段外已全部开通使用。通车后将至少缩短2个小时车程。
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