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惠霞高速东江特大桥实现全桥合龙
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中国新闻网1 hour agoBusiness2 min readChinaView translation

惠霞高速东江特大桥实现全桥合龙

标志着惠州“丰”字交通主框架南北交通轴线建设取得关键性进展

Quick Look

广东交通集团9月26日宣布,惠霞高速东江特大桥实现全桥合龙,东西两岸在中秋佳节“团圆”。该桥是惠霞高速全线施工难度最大的控制性工程,建成后将串联多条高速,完善粤港澳大湾区高速路网。

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Why It Matters

惠霞高速全长约69.9公里,是惠州市南北向交通主轴的关键工程,东江特大桥为其全线施工难度最大的控制性工程。

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中新网广州9月26日电 (记者 蔡敏婕)广东交通集团26日发布消息称,惠(城)霞(涌)高速东江特大桥实现全桥合龙,大桥东西两岸25日在中秋佳节“团圆”,标志着惠州“丰”字交通主框架南北交通轴线建设取得关键性进展。

惠霞高速全长约69.9公里,是惠州市南北向交通主轴的关键工程。项目建成后,将串联沈海高速、惠大高速,形成贯通惠城区至大亚湾经济技术开发区的交通大动脉,进一步完善粤港澳大湾区高速路网,为区域高质量发展注入强劲动能。

东江特大桥是惠霞高速全线施工难度最大的控制性工程,采用独塔钢箱梁斜拉桥设计,桥塔总高172米,为惠州目前最高桥塔。桥梁宽57.5米,按双向八车道标准建设,同步设置人行道与非机动车道,横跨东江航道。

大桥主塔采用古体“丰”字造型,上塔柱102米范围为钢壳-混凝土组合索塔,中下塔柱70米范围为混凝土塔,单侧设置21对斜拉索,结构新颖、施工难度大。

东江特大桥全桥钢箱梁共49个节段,总长度达566米,梁段宽、重,吊装难度、匹配难度大,对单节段线型匹配及全桥线型控制提出了很高要求。

钢箱梁在中山及汕尾基地加工,船运经珠江口进入东江,途经中山、东莞及惠州等多处海事管辖水域,受广深高速扩建(东莞段)东洲河大桥“昼向上行、夜向下行”交通管制、东莞石龙段拖轮护航复杂通航条件、惠州剑潭船闸宽高限制及下游浅滩潮汐通行等制约。项目团队提前与各海事、航道、船闸等单位沟通协调,增加运输船、规划运输时间,满足现场吊装要求。

随之而来的还有定位、拼装、焊接难题。东江特大桥钢箱梁宽度达57.5米。为此,项目加工基地采用长线法匹配,结合三维激光扫描技术生成构件真实模型,预拼装保证梁面拼接效果;同时在现场采用北斗+GNSS实时动态监测,实现每个节段拼接毫米级精度。

东江特大桥合龙后,项目部将推进桥面铺装和桥梁附属设施的安装施工。项目建成后将对服务惠州城区快速出行、带动沿线经济发展具有重要意义。

Open Questions

  • 惠霞高速预计何时全线正式通车?

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This article was originally published by 中国新闻网.

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