Using Least Square Method Fitting the Creep Coefficient Functions of Concrete Listed in the Bridge Criterion （JTG D62-2004） with Exponential Function Model
The creep coefficient functions of concrete listed in the bridge criterion （ JTG D62-2004） was expressed by the power function. The history of every element＇s creep terminal member force was recorded. The abecedarian curve fitting of the creep coefficient function of JTG D62-2004 was made by the pieeeful quasilinear regression method and the further curve fitting was made by the nonlinear least square method. The proposed method can fit the creep coefficient function with exponential function model and a way to get the recursion formula of c...
