Temperature Monitoring And Numerical Analysis Of Massive Concrete And Optimization

On the basis of the existing research of Mass concrete temperature control, a total of 30 conventional temperature sensors and 6 fiber optic temperature sensors were arranged from bottom to top in After River Bridge massive concrete caps(LWH for 12.4×12.2m×4m) in This article. Real-time temperature monitoring was carried out in the whole process of concrete pouring and curing,finite element software Midas/Civil numerical analysis was conducted, and compared and analyzed the theoretical calculations and field temperature monitoring results.It shows the real-time curve of calculated and measured values agree well, finite element calculation of hydration heat can analyze temperature trends in concrete pouring and curing process more accurately.For the original plan of After River Bridge massive concrete caps, cold water pipe spacing, flow rate and type were three aspects of the optimization were used by finite element software,and program optimization results were compared with the original in This article. It shows spacing,the flow and type will affect the cooling effect of the cold pipe. Finally, optimum cooling tube control scheme for the project.The monitoreg temperature data and the analysis of the results,Cold and calculating method of control scheme proposed analysis provides a useful reference for similar projects in the future, also for the future in-depth theoretical study provides a basis, and achieved the following main results:1.Traditional fiber optic temperature sensors and temperature sensors were used in the process of temperature monitoring of After River Bridge massive concrete pile cap, and the value and temperature trends of traditional fiber optic temperature sensors and temperature sensors were basically the same,it shows traditional temperature sensor to measure temperature with high accuracy.2.Results of the measured temperature value from the field and analysis show that Massive concrete pile cap of internal temperature in the process construction and maintenance shows as a whole decreased with time after the first rise,faster rate of rise, relatively slow after reaching the maximum cooling,which concrete is poured into the third, four days later appear the maximum, the maximum temperature generally appears in the center position of the intermediate layer,the uppermost temperature influenced by the temperature is very obvious.3.After River Bridge massive concrete pile used capfinite element software Midas/Civil numerical analysis,the theoretical calculations and field temperature monitoring results were compared and analyzed.It shows the real-time curve of calculated and measured values agree well, finite element calculation of hydration heat can analyze temperature trends in concrete pouring and curing process more accurately,it can be used as mass concrete construction and temperature control in accordance with the guidance.4.For After River Bridge massive concrete pile cap construction model of the original scheme in the paper, never cold pipes, cold water pipe spacing, traffic and the type of the three aspects performed optimization, put forward the Best cold pipe control scheme for the project.