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Temperature Stress Simulation Study on Large Aqueduct

CHEN Zhong1,2,ZHANG Zi-ming1,NI Zhi-qiang1(1.College of Mechanical Engineering of HoHai University,Nanjing 210098;2.3rd Construction Company of Zhongtian Construction Group Co.,Ltd,Shanghai 200235)  
Chemical reaction rate is used to interpret the influence of temperature on adiabatic temperature rise of concrete,equivalent time-based nonlinear heat conduction equation is solved,and simulation calculation is done for temperature field and creep stress field of a certain aqueduct in the construction of the South-to-North Water Diversion Project.Study shows that calculation results obtained from equivalent time-based concrete adiabatic temperature rise theory and traditional theory for concrete placement in the summer and in the winter are different.
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