The Measurement And Analysis Of Temperature Field In Fuxin HengshenGuoji Mass Concrete Foundation

Will produce large amounts of heat of hydration of cement in the process of condensation,concrete insulation material, the resulting heat of hydration can not be released in a timelymanner, resulting in mass concrete internal temperature rising, the formation of temperaturedifference between inside and outside when the temperature is too large, causing the concretetemperature stress than the ultimate tensile strength of concrete, the concrete cracks. Fuxinregion, due to the large temperature difference between day and night, harsh climatic conditions,if the insulation measures and crack measures are not taken in the concrete pouring process, it iseasy to result in mass concrete temperature cracks. Therefore, one important means to preventtemperature cracks is based on local climatic conditions, by studying the variation of the massconcrete temperature field, to take reasonable and effective temperature controlmeasures.However, the traditional means of temperature monitoring in the accuracy of thethermal parameters, and real time has been unable to meet the needs of modern engineeringtechnology, which provides a new platform for the monitoring of mass concrete applications.Mass concrete raft foundation of the international project in Fuxin City Hengsheng as theobject of study, combined with the climatic conditions of the Fuxin region, according to thetemperature fields of the mass concrete mechanism, use ADINA engineering software to buildmathematical models, the use of finite element analysis in the pre-construction through ascientific, systematic, accurately predict the mass concrete temperature field of the internalvariation of temperature crack control for the project, according to the carrying out themechanism of temperature crack analysis from a micro and macro point of view, to work outprogram, to put forward a reasonable crack control measures. The goodness of fit compared withall measured data to optimize the temperature control of analog system will use the finiteelement simulation and engineering similar thermal parameters, and provide a scientific basis fordecision making for the construction of mass concrete raft structure.The main content is as follows:(1) the study of mass concrete temperature field theory, analysis of the mechanism of thelarge volume of concrete cracks, and to provide theoretical support for the Fuxin the Hengshenginternational basis of mass concrete construction.(2) the use of ADINA mass concrete four-dimensional transient temperature fieldsimulation analysis to predict the international basis of the temperature field variation in Fuxin Glorious in advance with specific recommendations for temperature control measures and crack,and Fuxin area for future mass concrete construction to provide a reference.(3) use HNTT-D automated temperature test system for real-time monitoring of thedistribution of temperature field on the large concrete structures to prevent mass concretefoundation harmful cracks to ensure the impermeability of the Glorious foundation works in theconstruction process, and durability. At the same time within the concrete temperature field ofthe project changes in real-time monitoring data, with a high reference value.(4) obtained by the field data and engineering simulation, the temperature changes in thegoodness of fit compared to evaluate the feasibility of the proposed mass concrete temperaturemonitoring and conservation programs, to ensure to the ADINA simulation analysis concludedwith a viable.