Shiziyang Bridge is a double-deck steel truss suspension bridge with a main span of 2 180 meters,and its an-chorage foundation is the first bridge of the same type in the world.The anchor base plate is made of C40 high-volume concrete,with oversized structural dimensions,and the construction area is characterized by a hot and corrosive environ-ment,high requirements for crack control,and significant construction difficulty.Based on temperature stress simulation analysis,temperature control design was implemented,and comprehensive temperature control measures were taken on site,including layered and segmented pouring,optimal selection of raw materials,optimized mix proportions,control of raw material temperatures,concrete construction quality control,temperature control curing,and an intelligent tempera-ture control system for high-volume concrete,to control temperature-induced cracking in the anchor base plate.The on-site monitoring results showed that key indicators such as maximum temperature,internal surface temperature difference,and cooling rate were all within the temperature control standard range.No harmful temperature-induced cracks were found in the anchor base plate,indicating good temperature control effectiveness and the achievement of the expected temperature control objectives.
anchor base platehigh-volume concretecrack control technologysimulation analysisintelligent temperature control system
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