在仙桃城区高架桥施工现场,近100片UHPC-NC组合盖梁已完成施工。这种被称为“超级混凝土”的新材料,抗压强度是传统混凝土的5至8倍,是国内首次在高速公路主体工程中大规模应用。

“UHPC对温度和湿度极其敏感,高温天施工更要精准控制。”技术负责人指着正在浇筑的UHPC盖梁模壳介绍,“我们进一步通过优化钢筋布置、引入定位工装卡具,利用BIM模型推演,把单个模壳的现场安装时间压缩到半小时以内,彻底告别传统支架现浇工艺。”
截至目前,仙桃城区高架桥左幅桩基已完成96%,墩柱完成62%,UHPC-NC组合盖梁完成45%,普通盖梁完成44%。高架桥建成后,桥下将腾出8车道市政道路空间,彻底化解城区“净空受限、场地狭窄”的困局。
来源:荆楚网
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