CAJ | 학술논문

在大体积混凝土的温控研究中，绝热温升及水化热散发一半的时间是影响混凝土温度场结果的两个关键参数，有必要进行施工反演分析，验证前期取值的合理性，提高仿真分析的精度，进而指导温控研究，达到温控防裂的目的。利用ANSYS有限元软件，基于溪洛渡水电站泄洪洞有压段衬砌混凝土现场实测数据，对该衬砌用泵送C9040混凝土绝热温升和水化热散发一半的时间值进行反演分析，并利用反演分析成果，进行实际施工方案的复核。成果表明，有压洞衬砌混凝土温度场仿真计算值与现场实测数据相关系数较高，施工方案复核的计算中，温度应力结果与现场衬砌裂缝情况较为吻合，因而热学参数的反演分析成果合理。反演分析方法及结论可为类似地下工程衬砌混凝土温控防裂研究提供相应参考。
재대체적혼응토적온공연구중，절열온승급수화열산발일반적시간시영향혼응토온도장결과적량개관건삼수，유필요진행시공반연분석，험증전기취치적합이성，제고방진분석적정도，진이지도온공연구，체도온공방렬적목적。이용ANSYS유한원연건，기우계락도수전참설홍동유압단츤체혼응토현장실측수거，대해츤체용빙송C9040혼응토절열온승화수화열산발일반적시간치진행반연분석，병이용반연분석성과，진행실제시공방안적복핵。성과표명，유압동츤체혼응토온도장방진계산치여현장실측수거상관계수교고，시공방안복핵적계산중，온도응력결과여현장츤체렬봉정황교위문합，인이열학삼수적반연분석성과합리。반연분석방법급결론가위유사지하공정츤체혼응토온공방렬연구제공상응삼고。
In the study of temperature control of mass concrete ,the adiabatic temperature rise and half of hydration heat dissipation time is the key parameters that affect the concrete temperature field results ,there is a need for the construction of inverse analysis , validate the rationality of the previous value ,and improve the accuracy of the simulation analysis ,to guide temperature control re‐search and achieve the goal of crack control .Using ANSYS ,a finite element software ,and based on the measured data of the pres‐sure emptying tunnel of XiLuodu Hydropower Station ,inversion analysis of the adiabatic temperature rise of pumping C9040 lining concrete and half of hydration heat dissipation time .And the results are applied to the actual construction plan for review .Calcula‐tion results show that there is a high correlation coefficient between the simulation value and the measured data .And in calculating construction plan review ,temperature stress results are coincident with the lining crack situation .Thus the results of inverse analy‐sis for thermal parameters are reasonable .This can provide a reference for the study of concrete crack control in practical projects .