大体积防辐射混凝土结构的裂缝控制研究

Study on the Crack Control of Large VolumeConcrete for a Radiation Protection Structure

为了确保结构的防辐射,确保大体积混凝土结构的抗裂性十分重要.受大体积混凝土与防辐射混凝土两大因素的控制,其混凝土裂缝控制要求等级要求严格.本文结合具体工程,开展了一个直线加速器室的重大辐射源所在地下结构的大体积防辐射混凝土的裂缝控制研究,通过施工前的裂缝控制计算、自约束裂缝控制验算,以及施工过程中的养护和温度监控,实现裂缝最佳控制,相关结论对于类似工程提供了完整的参照.

For the structure of radiation protection, the crack control of large volume concrete structure is very important. The concrete crackcontrol level is strict because of two factors the large-volume concrete and radiation protection concrete elements. Based on aspecific projects study, this paper took an underground engineering structure as a major radiation source structure to study on thecrack control of large volume concrete through construction cracks control calculation and self-constraint crack control, andmaintenance during construction and temperature control, all the conclusion can be reference for the similar projects.