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近日,中建五局自主研发的《超大面积混凝土地面无缝施工技术研究》获湖南省科学技术进步奖,同时也填补了我国超大面积混凝土地面施工技术上的空白。该技术通过风速与环境温度对混凝土早期收缩影响的试验研究和施工期钢筋混凝土构件约束变形性能研究,诠释了温度收缩应力与混凝土的温度、收缩和徐变的关系,妥善解决了温度收缩应力问题,提出了无缝施工分仓间距的计算方法,具有科学创新性和可操作性。
Recently, China Construction Fifth Board independently developed “large area concrete ground seamless construction technology research” by the Hunan Provincial Science and Technology Progress Award, but also to fill the super large area of ?? China’s ground construction of the technical gaps. Based on the experimental research on the influence of wind speed and ambient temperature on the early shrinkage of concrete and the research on the restraining deformation of reinforced concrete members during construction, the relationship between temperature shrinkage stress and temperature, shrinkage and creep of concrete is expounded and the problem of temperature shrinkage stress is properly solved , Put forward the calculation method of seamless construction sub-warehouse spacing, with scientific innovation and maneuverability.