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解惑“幻交专区vⅰdeossex另类”-环球时报

宁夏中卫黄河幻交专区vⅰdeossex另类大桥旧桥“华丽变身” 改造成功实现通车

来源: 中国报道
2024-12-23 13:14:02

最佳回答

“幻交专区vⅰdeossex另类”宁夏中卫黄河幻交专区vⅰdeossex另类大桥旧桥“华丽变身” 改造成功实现通车

  中新幻交专区vⅰdeossex另类网银川12月20日电 (幻交专区vⅰdeossex另类记者 李佩珊)12月20日,由中国铁建大桥局承建的宁夏中卫黄河大桥旧桥改造项目完成全部施工任务,实现通车。

宁夏中卫黄河大桥旧桥改造结束实现通车。 苏艺 摄

  中卫黄河大桥旧桥位于中卫市沙坡头区城南约4公里,是宁夏“八五”跨“九五”的重点建设工程项目,也是连接中卫黄河南北的重要通道。该大桥桥梁总长1116.63米,至今已通车运营27年。

宁夏中卫黄河大桥旧桥新貌夜景。 苏艺 摄

  近年来,当地交通量逐年增长和重型车辆增多,为保障大桥运营安全,延长桥梁使用年限,经行业专家多方论证对中卫黄河大桥旧桥实施加固改造。

  据悉,中卫黄河大桥旧桥的加固改造项目采用“矮塔斜拉组合体系+更换挂梁”方案进行,主要包括主桥上部结构新增桥塔斜拉索,形成三塔双索面斜拉桥带挂梁的新结构体系,引桥30米预应力混凝土简支T梁增设体外预应力束,增设结构监测系统和防落梁拉索限位器等。此外,项目还对全桥的伸缩缝、铺装层、防撞墙进行了更换,并对上下部结构中的裂缝及破损部位进行了修补。

  为保证改造后的桥梁具有更长的使用寿命,更强的承载能力,建设团队还积极应对工期紧、环境受限、工序复杂等挑战,科学组织、精心施工,对各项流程进行严格的监控与检测。在特殊倒锥形化学锚栓安装试验中,建设团队专门邀请德国化学锚栓生产厂家售后人员进行现场测试。另外,在项目施工过程中,建设团队还通过采用无支架法施工、复杂焊缝处理和精准吊装与定位等“四新”技术,对桥梁进行强度的提升与结构的修复,确保了改造后的桥梁能够承载更大的负荷,并经受住各种自然和行车的考验。

  作为中卫市沙坡头区重点建设项目,中卫黄河大桥旧桥的“改头换面”将为有效恢复沿线工农业运输及居民出行提供极大的便利,对经济发展起到重要推动作用。(完)

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