Analysis of Hydration Heat Effect of Layered Pouring of Large-volume Abutment
Relying on the background of the abutment construction of the Xiaowujiang Bridge in Guizhou Province,the finite element software midas FEA is used to establish the simulation model of the abutment construction.Considering various boundary conditions in-side and outside the abutment and thermal loads,the hydration heat construction stage is used to simulate the abutment stratification.In the process of pouring construction,the hydration heat effect of layered pouring of large-volume abutments is studied.The following conclusions are drawn:the interval time of layered pouring has little influence on the maximum temperature during abutment construc-tion.Under three pouring conditions(interval of 3,4 and 5 d),the maximum temperature in the internal heating process of abutment is only 0.8℃and1.2℃;Timeintervallongerconstructioncondition,thesurfacestresslargerinstead,threekindsofthepilecapsunder the condition of maximum stress respectively is 1.77,1.95,2.01 MPa.
large volume abutmentheat of hydrationlayered pouringinterval time
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