Temperature Field Monitoring and Finite Element Analysis of Mass Concrete for Bridge Bearing
To control the adverse effects of excessive temperature difference between the inner and outer surfaces and temperature cracks after pouring mass concrete,the temperature field of mass concrete without cooling water pipe test piers and with cooling water pipe abutments was monitored.The distribution and variation law of the internal temperature field of mass concrete with and without cooling water pipe cooling measures were studied,and a finite element model was established to analyze the difference between the finite element simulation results and the measured data.The results show that after pouring mass concrete,the heating rate of the concrete is greater than the cooling rate.The installation of cooling water pipes and cooling measures can significantly reduce the center temperature of mass concrete.During the temperature rise and fall stages,the rates of temperature rise and fall inside and on the surface of the concrete are basically the same,and the temperature changes from inside to outside show a decreasing trend,but there is no linear relationship.The finite element simulation results are in good agreement with the measured data.
mass concretebridge pile capin-situ monitoringhydration heat analysistemperature fieldcooling measure
NETL
NSTL
万方数据
