新疆伊犁河上架起新通道 “两霍两伊”连通再提速|少妇特黄a片一区二区三区免费
中新网乌鲁木齐8月12日电 (王富杰 吕燕军)12日,随着最后一方混凝土浇筑完成,中铁三局承建的新疆伊犁河三桥主桥顺利合龙,距离年内通车目标更近一步。

伊犁河三桥地处伊宁、可克达拉、察布查尔三地交界中心地带,起点位于霍尔果斯经济开发区伊宁园区,跨越伊犁河,终点位于察布查尔锡伯自治县湿地公园,全长2.86公里,按双向四车道一级公路兼城市主干道标准建设,设计时速60公里。
伊犁河三桥主桥造型独特,是国内首座三塔四跨“O”形矮塔斜拉桥,技术复杂,施工难度高。主桥中塔高51米,两侧边塔高50米,相当于17层楼高度,均为下部C50混凝土结构、上部“O”形钢结构索塔,其中钢结构索塔由8种类型节段拼装,最重节段94.7吨,约为60辆小轿车的重量。
据了解,将如此重的钢节段严丝合缝拼接起来,误差控制在毫米级是施工的关键控制点,项目运用三维可视化技术,进行“模拟彩排”,精准还原主塔搭建全过程,确定最佳拼装方案,并在拼装中引入三维千斤顶进行微调,配合高精度全站仪全过程监测,确保精准对位。主桥施工中还涉及“富水卵石土地区大直径超长桩基施工”“大体积混凝土承台一次性浇筑”“空间双曲面斜拉索体系精准定位”“变高度单箱三室宽截面主梁施工”等多个难题,项目经理部科学谋划、精心组织,不断优化施工方案、强化科技赋能、合理配置人员机械等生产要素,保障了工程各个节点目标,实现了主桥顺利合龙。

伊犁河三桥是连接霍尔果斯经济开发区伊宁园区与察布查尔锡伯自治县的重要过河通道,通车后两地车程将缩短近1小时,同时串联起霍尔果斯市、伊宁市、察布查尔锡伯自治县、昭苏县等区域,助力特色农产品外运以及旅游环线的形成,为构建新疆伊犁河谷快速交通网、促进“两霍两伊”一体化发展、助力“一带一路”核心区建设注入新动力。(完)
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