李晓文,孟书灵,朱炎宁,罗志明,王玉娟
大面积冰面承压层混凝土配制技术研究
李晓文,孟书灵,朱炎宁,罗志明,王玉娟
摘 要:第十三届全国冬季运动会冰上运动中心项目由速滑馆、冰球馆、冰壶馆、媒体中心及组委会、餐厅和宿舍、动力中心组成。其中,冬运会三个场馆皆属于大面积冰面承压层,为保证其整体性,采用连续浇筑,激光整平的施工工艺。本文就该工程项目涉及的混凝土抗冻性能、收缩特性等耐久性,力学性能以及施工性能指标进行了研究,分析归纳出满足设计和施工要求的收缩率低、抗冻性能良好的连续浇筑大面积冰面承压层的C40F250低收缩混凝土配合比。
Abstract: The construction projects of the Thirteenth National Winter Games center consist of speed skating museum, hockey hall, curling hall, media center and the organizing committee, canteen and dormitory, and power center. Among them, the venue of the three winter olympics belong to the large area of the ice compression layer, which are with construction technology by continuous casting and laser leveling to make sure its integrity. In this paper, it presents the concrete frost resistance, shrinkage properties, durability, mechanical properties and construction performance of engineering project by finite element study. The C40F250 low shrinkage concrete mix ratio for the large area ice compression layer continuous casting concrete is analyzed and introduced, to meet the design and construction requirements of low shrinkage and good frost resistance.
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