Temperature Control Simulation of Mass Concrete for Pump Station in Cold Region
WANG Zhengqian
WANG Ruihai
YAO Meng
CHEN Haifeng
Abstract：During the hydration process of mass concrete,large temperature stress is easily generated due to temperature rise and the change of internal and external temperature difference,which further induces cracks and affects the safety and durability of engineering structures.With the wide application of large-flow pump stations in water conservancy projects,the problem of temperature control and crack prevention of mass concrete has become a key technical difficulty in construction.Taking the Jiyun River Estuary Pump Station Project in Tianjin as the background,the finite element analysis software Abaqus is used to carry out numerical simulation on the distribution of temperature field and stress field of the inlet and outlet conduit sections of the pump station under different construction conditions.The variation characteristics of temperature peak and tensile stress under temperature control measures such as water pipe cooling,surface thermal insulation,expansion agent addition,post-pouring belt setting and without temperature control measures are emphatically compared and analyzed.The results show that without temperature control measures,the internal temperature peak and temperature difference of concrete are large,and the generated tensile stress exceeds the tensile strength of C35 concrete,which has cracking risk.After adopting measures such as water pipe cooling,surface thermal insulation and expansion agent addition,the temperature distribution and stress state of concrete are significantly improved.Comprehensive analysis shows that adopting comprehensive temperature control measures such as winter thermal insulation,water pipe cooling,temperature drop rate control(1.0～1.5℃/d)and expansion agent addition can effectively reduce concrete temperature rise and tensile stress,avoid cracks,and improve the long-term stability and durability of the structure.Among them,setting post-pouring belts and adding expansion agent can further reduce the risk of cracks.The research results can provide reference for the temperature control design of mass concrete and the formulation of crack prevention measures in engineering construction.
Keywords：temperature control measuresconcrete crackwater pipe coolingexpansion agenttensile stress
Publication Date：2026-07-20
Online Publishing Date：2026-09-16(First online date of this platform, not the publication date of the document)
Pages：9( 117-125 )