湾区工程狮子洋通道:迎接高温“烤”验 智能设备“退热”|蜜桃17c成人一区二区
1. 蜜桃成热时197
中新网广州7月18日电 题:湾区工程狮子洋通道:迎接高温“烤”验 智能设备“退热”
作者 蔡敏婕 何紫琪
今年进入7月以来,广东多地出现持续性高温天气。狮子洋通道位于珠江口,叠加汛期强降雨带来的湿度,体感温度可达40至45摄氏度,暴露在阳光下的钢筋表层温度甚至高达70摄氏度。
烈日炙烤下,狮子洋通道T9标业主代表黄志涵爬上大桥东主塔的塔顶,与监理、现场施工人员一同查看施工情况。

“主塔的钢壳定位、焊接,塔内钢筋连接以及混凝土浇筑等工序,都直接关系桥塔结构安全和耐久性,我们必须严格把关。”黄志涵介绍道,今年项目全面进入建设高峰期,截至目前,主桥主塔建设高度已突破160米;锚碇正进行锚杆安装,引桥工程正架设预制梁,逐步转入上部结构施工。
距离主塔约700米的巨型锚碇施工现场,后顶板的基础混凝土浇筑正有条不紊地进行。在夏季,大体积混凝土浇筑及控裂,是现场施工和监督检查工作的重点。
“高温条件下,混凝土抗裂性能易受不利影响,容易产生温度裂缝。按规范要求,浇筑入模温度不得大于28摄氏度”,负责东锚碇施工的保利长大T9标总工匡一成介绍,“我们在现场密布了冷却水管和测温传感器,通过这套智能温控系统,能实现实时监测和自动调节通水温度,确保施工质量。”

高温虽然给施工带来一定影响,但连续晴天少雨的天气也为工程加快推进创造了条件。作为进入广州市区的主干道之一,南沙大道隧道必须赶在第十五届全运会来临前,具备通车条件。目前基坑土方开挖接近完成,底板施工过半,侧墙同步跟进。
当前正值盛夏时节,狮子洋通道采取多项防暑措施,一方面,项目科学合理地进行施工组织安排,通过调整上下班作业时间、缩短连续作业时间等措施避开高温作业时段和降低工人劳动强度;另一方面,项目各标段根据现场实际情况在施工区域合理设置茶水亭、移动休息棚,持续供应防暑饮品及应急药品,并专门开展夏季高温密闭空间中暑应急处置实操演练。
据介绍,狮子洋通道是粤港澳大湾区又一重大工程,全长约35公里,上下双层共16车道,包含跨江主桥和两岸引线工程,连接广州市南沙区和东莞市沙田、虎门两镇。其中主桥采用主跨2180米双层钢桁悬索桥的方案“一跨过江”,创下双层悬索桥五项世界第一。项目建成通车后,将为珠江东西两岸融合发展开辟新通道,对加快构建粤港澳大湾区“1小时生活圈”,推进珠三角一体化高质量发展具有重要意义。(完)
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