研究目的
To present a framework of cracking control for a mass concrete structure in a reservoir project using Distributed Temperature Sensing (DTS) system.
研究成果
The DTS system has higher efficiency in temperature data acquisition than conventional electric transducers. Thermal properties of concrete can be determined through the inverse analysis using full data of the concrete temperature measured by the DTS system. A framework of temperature control has been developed by integrating the DTS measurement with the temperature forecast and the cracking prediction based on thermal stress simulation and cracking risk evaluation using the thermal properties from the inverse analysis, and this framework greatly improves the efficiency of temperature and cracking control of mass concrete in construction.
研究不足
The study relies heavily on the thermal stress simulation, which depends on the values and parameters of thermal and mechanical properties of the concrete. A parametric study of the creep effect of the concrete should still be performed for improving the accuracy of thermal stress simulation and cracking control.
