Seite - 1298 - in Book of Full Papers - Symposium Hydro Engineering

SUMMARY A real-time, online and personalized intelligent cooling control system for a mass concrete structure(ICCS) is developed in this paper, the proposed method is an important engineering measure to prevent the mass concrete structure from cracking during the construction period. Its main features include: the digital temperature sensors installed in the new pouring mass concrete blocks for real- time measurement of temperature change; one flow, temperature opening measuring and feedback controlling device is installed in the inlet and outlet of cooling pipe, an average reduction of concrete temperature is obtained online through calculating the cooling temperature difference; Thus, according to the Fourier law and conservation of energy the real-time water flow is determined for cooling, then, the intelligent personalized temperature control is carried out by control platform system based on design curve of time with temperature, thereby reducing the concrete tensile stress to achieve purpose of pouring non-cracking concrete dam. The proposed controlling method and system were successfully used to guide the temperature controlling of Xiluodu arch dam construction. The proposed novel method will be beneficial to the design and construction of the similar projects for controlling thermal stress of mass concrete structure. KEY WORDS CONTROL METHOD; COOLING; TEMPERATURE; DAM; 1298