医院直线加速器室防辐射混凝土施工技术研究

Research on Construction Technology of Radiation-Proof Concrete in Hospital Linear Accelerator Room

因医院大型直线加速器室对结构的防辐射性能具有严格要求,施工中往往需要采取特殊处理措施。结合某医院工程,本文分别从防辐射混凝土优化配制工艺、高大模板支撑体系和孔洞预留结构等三方面开展系统研究。研究结果表明,采用配比优化后的重晶石防辐射纤维混凝土,其28d标准抗压强度可达到38.9MPa;当梁侧立杆距梁侧的间距过大时,采用本文加固方法可有效提高支模体系的稳定性;采用迷路式孔洞预留结构,可有效提高薄弱部位的防辐射能力。

Because of the strict requirements of radiation resistance of the structure in the large linear accelerator room,special measures are often needed in the construction.Combined with a hospital project,this paper studies the optimization of radiation proof concrete preparation technology,high formwork support system a nd hole reservation structure.The results show that the standard compressive strength of the reinforced concrete with the optimized ratio can reach 38.9mpa for 28d;When the distance between the vertical bar and the side of the beam is too large,the stability of the formwork supporting system can be improved by using the reinforcement method in this paper;The labyrinth hole reservation structure can effectively improve the radiation resistance of the weak parts.