Method for calculating fatigue life of orthotropic steel bridge deck slab

The invention provides a method for calculating the fatigue life of an orthotropic steel bridge deck slab. The method comprises the following steps of collecting nominal strain monitoring data; performing calculation to obtain a nominal strain sample S; performing test to obtain an SCF (stain concentration factor); calculating the effective nominal strain amplitude SE and the effective hot spot stress amplitude SHE under the corrosion effect; calculating the fatigue resistance C(t) under the corrosion effect; calculating the fatigue damage D(t); calculating the fatigue life T. The method for calculating the fatigue life of the orthotropic steel bridge deck slab provided by the embodiment of the invention can be used for accurately calculating the fatigue life of the orthotropic steel bridge deck slab under the corrosion and vehicle-mounted effects.