Environment-friendly bridge foundation design method

The invention provides an environment-friendly bridge foundation design method. The environment-friendly bridge foundation design method comprises the following steps that a, according to the length of an originally designed pile foundation and the size of a bearing platform arranged at the top of the pile foundation, the excavated spoil amount after the pile foundation and the bearing platform are buried is estimated; B, an estimated accumulation model of the excavated spoil amount is designed according to a landform of the position where the pile foundation and the bearing platform are buried, and an additional load generated by the accumulation model is calculated; C, the distance between the top of the pre-buried pile foundation and a new ground is determined by taking an accumulationmodel surface as the new ground; D, the pile length and the pile diameter of the pile foundation are determined again according to the load; E, according to the re-determined pile length and the re-determined pile diameter, t