DOI QR코드

DOI QR Code

Intelligent cooling control for mass concrete relating to spiral case structure

  • Ning, Zeyu (Department of Hydraulic Engineering, Tsinghua University) ;
  • Lin, Peng (Department of Hydraulic Engineering, Tsinghua University) ;
  • Ouyang, Jianshu (Department of Hydraulic Engineering, Tsinghua University) ;
  • Yang, Zongli (China Three Gorges Projects Development Co., Ltd.) ;
  • He, Mingwu (China Three Gorges Projects Development Co., Ltd.) ;
  • Ma, Fangping (Guodian Dadu River Hydropower Development Co., Ltd.)
  • 투고 : 2020.12.25
  • 심사 : 2022.07.18
  • 발행 : 2022.07.25

초록

The spiral case concrete (SCC) used in the underground powerhouse of large hydropower stations is complex, difficult to pour, and has high requirements for temperature control and crack prevention. In this study, based on the closed-loop control theory of "multi-source sensing, real analysis, and intelligent control", a new intelligent cooling control system (ICCS) suitable for the SCC is developed and is further applied to the Wudongde large-scale underground powerhouse. By employing the site monitoring data, numerical simulation, and field investigation, the temperature control quality of the SCC is evaluated. The results show that the target temperature control curve can be accurately tracked, and the temperature control indicators such as the maximum temperature can meet the design requirements by adopting the ICCS. Moreover, the numerical results and site investigation indicate that a safety factor of the spiral case structure was sure, and no cracking was found in the concrete blocks, by which the effectiveness of the system for improving the quality of temperature control of the SCC is verified. Finally, an intelligent cooling control procedure suitable for the SCC is proposed, which can provide a reference for improving the design and construction level for similar projects.

키워드

과제정보

The research described in this paper was financially supported by the China Three Gorges Corporation (WDD/0490, WDD/0578; BHT/0805) and the National Natural Science Foundation of China (No. 51979146).

참고문헌

  1. Barla, G., Fan, Q. and Lin, P. (2018), "Introduction to the Special Issue "Super high arch dams and underground caverns in China"", Rock Mech. Rock Eng., 51, 2447-2450. https://doi.org/10.1007/s00603-018-1551-9
  2. Chen, S. and Guo, L. (2011), "Simulation analysis of concrete temperature and stress of plant elbow section of Sluice Dam", Adv. Mater. Res., 368, 3011-3014. https://doi.org/10.4028/www.scientific.net/AMR.368-373.3011
  3. Chen, Q., Qi, Y. and Gong, Y. (2012), "Cracking analysis of spiral case structure with combinatorial embedding manner of large underground power station turbine unit", Appl. Mech. Mater., 212, 917-921. https://doi.org/10.4028/www.scientific.net/AMM.212-213.917
  4. Conceicao, J., Faria, R., Azenha, M., Mamede, F. and Souza, F. (2014), "Early-age behaviour of the concrete surrounding a turbine spiral case: Monitoring and thermo-mechanical modelling", Eng. Struct., 81, 327-340. https://doi.org/10.1016/j.engstruct.2014.10.009
  5. Farzampour, A. (2017), "Temperature and humidity effects on behavior of grouts", Adv. Concrete Constr., Int. J., 5(6), 659-669. https://doi.org/10.12989/acc.2017.5.6.659
  6. Ha, J., Jung, Y. and Cho, Y. (2014), "Thermal crack control in mass concrete structure using an automated curing system", Automat. Constr., 45, 16-24. https://doi.org/10.1016/j.autcon.2014.04.014
  7. Jena, J., Basa, B. and Panda, S. (2013), "Stress analysis around spiral casing of francis turbine of a hydel power house by finite element method", Proceedings of International Conference on Structural Engineering and Mechanics, Rourkela, India, December.
  8. Jing, X., Liu, X., Zhou, W. and Chang, X. (2014), "Real-time temperature control for high arch dam based on decision support system", Transact. Tianjin Univ., 20(2), 118-125. https://doi.org/10.1007/s12209-014-2210-1
  9. Lin, P., Li, Q. and Hu, H. (2012), "A flexible network structure for temperature monitoring of a super high arch dam", Int. J. Distribut. Sensor Networks, 8(11), 917849. https://doi.org/10.1155/2012/917849
  10. Lin, P., Li, Q., Zhou, S. and Hu, Y. (2013), "Intelligent cooling control method and system for mass concrete", J. Hydraul. Eng., 44(8), 950-957. [In Chinese]
  11. Lin, P., Li, Q. and Jia, P. (2014), "A real-time temperature data transmission approach for intelligent cooling control of mass concrete", Mathe. Probl. Eng., 8, 1-10. https://doi.org/10.1155/2014/514606
  12. Lin, P., Wei, P., Wang, W. and Huang, H. (2018), "Cracking risk and overall stability analysis of Xulong high arch dam: a case study", Appl. Sci., 8, 2555. https://doi.org/10.3390/app8122555
  13. Lin, P., Ning, Z., Shi, J., Liu, C., Chen, W. and Tan, Y. (2020), "Study on the gallery structure cracking mechanisms and cracking control in dam construction site", Eng. Fail. Anal., 121, 1-20. https://doi.org/10.1016/j.engfailanal.2020.105135
  14. Niu, X. (2020), "Conditions for the occurrence of notable edge waves due to atmospheric disturbances", Appl. Ocean Res., 101, 102255. https://doi.org/10.1016/j.apor.2020.102255
  15. Ouyang, J., Chen, X., Huangfu, Z., Lu, C., Huang, D. and Li, Y. (2019), "Application of distributed temperature sensing for cracking control of mass concrete", Constr. Build. Mater., 197, 778-791. https://doi.org/10.1016/j.conbuildmat.2018.11.221
  16. Pradhan, N. and Jena, J. (2016), "Stresses and deformations in concrete encasing spiral case of a hydro-turbine by finite element method", IJET, 8(1), 155-161.
  17. Qiang, S., Leng, X., Wang X., Zhang, J. and Hua, X. (2019), "An automated control system for concrete temperature development in construction", Comput. Concrete, Int. J., 24(5), 437-444. https://doi.org/10.12989/cac.2019.24.5.437
  18. Quivik, F.L. (2013), "Cooling mass concrete: Owyhee, Hoover, and building large dams", Proceedings of the Institution of Civil Engineers-Engineering History and Heritage, 166(4), 236-247. https://doi.org/10.1680/ehah.12.00015
  19. Schackow, A., Effting, C., Gomes, I.R., Patruni, I.Z., Vicenzi, F. and Kramel, C. (2016), "Temperature variation in concrete samples due to cement hydration", Appl. Therm. Eng., 103, 1362-1369. https://doi.org/10.1016/j.applthermaleng.2016.05.048
  20. Wu, X., Yu, S., Tao, X., Chen, B., Liu, H., Yang, M. and Kang, T. (2020), "Behavior of UHPC-RW-RC wall panel under various temperature and humidity conditions", Adv. Concrete Constr., Int. J., 9(5), 459-467. https://doi.org/10.12989/acc.2020.9.5.459
  21. Xu, X., Luo, Q. and Ma, Z. (2011), "Numerical simulation of temperature and creep of concrete surrounding spiral case in a hydraulic plant", Adv. Mater. Res., 194, 977-980. https://doi.org/10.4028/www.scientific.net/AMR.194-196.977
  22. Zhang, J., Duan, Y. and Wang, J. (2013), "Temperature control research on spiral case concrete of Xiluodu underground power plant during construction", Appl. Mech. Mater., 328, 933-941. https://doi.org/10.4028/www.scientific.net/AMM.328.933
  23. Zhang, B., Cullen, M. and Kilpatrick, T. (2016), "Spalling of heated high performance concrete due to thermal and hygric gradients", Adv. Concrete Constr., Int. J., 4(1), 1-14. https://doi.org/10.12989/acc.2016.4.1.001
  24. Zhang, L., Zhang, G., Liu, Y., Deng, X. and Yang, L. (2017), "Development and application for intelligent monitoring system of concrete temperature control", Proceedings of the 2nd International Conference on Modelling, Simulation and Applied Mathematics. https://doi.org/10.2991/msam-17.2017.57