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积石峡黄河特大桥拱肋管压混凝土 首件工程完成
积石峡黄河特大桥坐落于孟达国家级自然保护区及积石峡黄河库区内,是大清公路全线的控制性工程,桥梁全长478.72米,其主跨长度265米,矢跨比为1/1.5,钢结构加工5069吨,建成后将成为青海省黄河中上游最大跨径的上承式钢管混凝土拱桥。此次拱肋压注混凝土首件工程的顺利实施,成功验证了混凝土配合比、技术参数及施工组织方案的可行性。
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