Multiple regression analysis-based arch bridge suspender force regulation method

The invention provides a multiple regression analysis-based arch bridge suspender force regulation method. The method comprises the following steps of measuring the internal forces of suspenders before regulation; calculating the regulated vectors of the suspender forces, calculating influence matrixes of the suspender forces and calculating the sensitivity coefficients of the suspenders; sequencing the sensitivity coefficients of the suspenders from large to small, eliminating the suspender with the smallest sensitivity coefficient and using the rest suspenders as the suspenders to be tensioned; calculating the regulation vectors of the suspenders to be tensioned and the suspender tension errors of all suspenders by adopting a multiple regression analysis method; continuously repeating the steps to eliminate the suspender with the relative smallest sensitivity coefficient one by one, and when the suspender tension error of a certain suspender is greater than or equal to 5%, using the regulation vector determined by calculating at the last time as the tension, needing to be applied to the suspender, to perform suspender force regulation. The regulation number of the suspenders can be effectively reduced and the work efficiency is high by using the sensitivity difference of the arch bridge suspenders.