Bridge rotation key part stress prediction model construction method and device based on response surface method

The invention discloses a bridge rotation key part stress prediction model construction method and device based on a response surface method, belongs to the technical field of bridge construction safety management, and solves the problem that in the prior art, a bridge structure is likely to be damaged. The method comprises the following steps: constructing an equal-proportion bridge finite element simulation model; performing parameter analysis on the bridge structure finite element simulation model, extracting critical data of a vulnerable part, matching the critical data with corresponding parameter data, and extracting to generate a first form; substituting the data of the first form into a response surface method model to establish a bridge rotation key part stress prediction model, and obtaining stress-strain prediction models corresponding to different situations; an equal-proportion bridge building information model is constructed to dynamically simulate the bridge rotation process, and a detection pa