摘要
利用有限元法的MIDAS/Civil软件进行数值研究,分析管道冷却系统参数对大体积混凝土施工过程中温度场和热应力状态的影响。结果表明:大体积混凝土施工过程中采用管道冷却系统可显著规避因水泥水化过程导致升温过高过快的问题,降低热裂缝风险。并且在应用管道冷却系统时,要合理分配冷却系统的参数,以便准确评估大体积混凝土的温度场和热应力的变化。所得结果具有实际意义,可用于管道冷却系统的参数设定。
Numerical research was conducted using MIDAS/Civil software based on the finite element method to analyze the influence of pipeline cooling system parameters on the temperature field and thermal stress state during the construction process of mass concrete.The results indicate that using apipeline cooling system during the construction of large volume concrete can significantly reduce the maximum temperature generated by the necessary temperature increase during the cement hydration process,and reduce the risk of thermal cracking.And when applying pipeline cooling systems,it is necessary to correctly allocate the parameters of the cooling system in order to accurately evaluate the temperature field and thermal stress changes of large volume concrete.The obtained results have practical significance and can be used for parameter setting of pipeline cooling systems.
作者
薛德稳
XUE Dewen(Tianjin International Engineering Branch of China Railway 18th Bureau Group,Tianjin 300222,China)
出处
《江苏建筑职业技术学院学报》
2023年第3期11-15,共5页
Journal Of Jiangsu Vocational Institute of Architectural Technology
关键词
温度场
裂缝
管道冷却系统
大体积混凝土
temperature field
cracks
pipeline cooling system
mass concrete
作者简介
薛德稳,男,山东单县人,高级工程师,研究方向为隧道、公路、桥梁等施工技术与管理领域。E-mail:ztsbj12@163.com
