Application of hydration heat release simulation analysis of concrete considering shrinkage and creep in construction of alternative bay method
Starting with the time-varying model of concrete strength,elastic modulus and shrinkage and creep model,Specifications for design of highway reinforced concrete and prestressed concrete bridges and culverts(JTG 3362-2018)model,Standard for construction of mass concrete(GB 50496-2018)model,CEB-FIP(1990)model,ACI model were compared and analyzed.Through temperature stress monitoring of a large volume concrete under construction project,simulation analysis was carried out based on Midas software.The result shows that the temperature and stress results of Specifications for design of highway reinforced concrete and prestressed concrete bridges and culverts(JTG 3362-2018)model and CEB-FIP(1990)model are in good agreement with the measured results,which verifies the accuracy of the calculation method in this paper.Finally,the calculation model of hydration heat release considering shrinkage and creep was applied to a 174.9 m×214.6 m super-long raft structure.It can be concluded that the jump mode and construction measures adopted can ensure that the temperature and stress level meet the requirements well.
hydration heat releaseshrinkagecreepalternative bay methodsimulation analysis
NETL
NSTL
万方数据
