四川广绵高速扩容项目刘家咀特大桥合龙|国内精品人妻无码久久久影院蜜桃
中新网成都7月16日电 (记者 王鹏)记者16日从蜀道集团获悉，京昆高速公路广元至绵阳段扩容项目(以下简称“广绵高速扩容项目”)全线重难点控制性工程——刘家咀特大桥当日实现双幅合龙，向2026年全线通车目标迈出了关键一步。
刘家咀特大桥位于广元市剑阁县普安镇，主桥为连续刚构，最大墩高80米。桥址位于剑门蜀道国家级风景名胜区与翠云廊古柏省级自然保护区交汇带，生态环境敏感度高，且常年受强风侵袭(最大风力达9级)，加之地形地质条件复杂，生态保护压力和建设难度较大。
据介绍，建设团队采用“零弃方+油转电”的模式，通过规划五台绿色拌合站，实现了土石方挖填平衡与高效利用，减少总挖方量约4.3万立方米，显著降低施工对生态环境的影响。同时，项目应用自动调节智能挂篮系统，能够实现高空作业关键工序自动化、无人化施工，助力大桥完成毫米级精度合龙。
广绵高速扩容项目起自广元市周家河，接在建的京昆高速公路汉中(陕川界)至广元段扩容工程和已建兰海高速相应路段，止于绵阳市魏城镇东南侧，接京昆高速公路绵阳至成都段扩容工程。项目全长123.984公里，设计标准为双向六车道，设计速度120公里/小时，是国家高速公路网“南北大动脉”京昆高速的关键段落，也是四川省北上出川的核心通道。
该项目全线建成后，将有效缓解京昆高速绵广段交通拥堵状况，大幅提升日均通行能力，广元至绵阳将由原来的2小时缩短至70分钟。(完)
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