Research On The Temperature Crack Of Mass Concrete Based On A Lake Tunnel Project Used Open Cut Method

Many factors impact the mass concrete temperature crack, they are complex and Interacted with each other. the appeared temperature cracks affect the safety and durability of concrete structures to a certain extent, at the most time remediation costs are often high. The above reasons make the research on mass concrete temperature crack become a hot topic of subject.Combining with the fourth period of a lake tunnel in a city and using finite element analysis method, this paper does further research on the temperature field and stress field of the massive tunnel concrete. Specific studies are as follows:1. Through reading a large number of literature, summarizes the mass concrete temperature crack in the domestic and foreign research status and its application status quo of prevention and control technology.2. Through the analysis of the measured temperature data sorting, summarize variation of temperature in the pouring of concrete tunnel curing period.3. Through the field of environment and construction process of information gathering records, simulate the tunnel construction of mass concrete temperature and stress fields in the interior, to get one pair of similar projects having reference value of the finite element analysis model.4. By the finite element model obtained for further analysis and summary of tunnel concrete temperature stress field of law, and on the basis of the analysis results, put forward the effective proposals on the concrete curing process of the tunnel temperature cracks.