Research on Intelligent Temperature Control Technology of Main Tower Cap of North Airway Bridge of ZhangJinggao Yangtze River Bridge
As a super project,ZhangJinggao Yangtze River Bridge is the first suspension bridge with a span of over 2 000 meters in China as well as the largest span bridge in the world.It has high scientific and technological content and engineering quality requirements.It is necessary to develop and apply intelligent construction technology to important construction technology to realize measurable,visible and controllable construction and improve engineering quality and work efficiency.In view of the high standard construction requirements of'seamless pile cap and tower base'for ZhangJinggao Yangtze River Bridge,the intelligent temperature control technology of mass concrete was applied.In order to improve the water supply efficiency of mass concrete cooling pipes,an intelligent cooling water control system was developed,so as to achieve the purpose of controlling the internal temperature development of mass concrete;for the sake of visually displaying the process and effect of temperature control,an intelligent display platform for temperature control was developed.Based on the preset temperature control index,the data exceeding the standard and abnormal in the monitoring process were warned,and the processing instructions were introduced.The application of intelligent temperature control technology in mass concrete of pile cap and tower base of North Airway Bridge of Zhangjinggao Yangtze River Bridge showed that the temperature control level of mass concrete had been significantly improved,the influence of human factors on the quality of mass concrete had been avoided,and the crack control effect of pile cap and tower base concrete was favorable.
intelligent constructionintelligent temperature controlintelligent cooling waterintelligent display platformlarge-volume concrete
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