Method for selecting pouring scheme of large-span concrete-filled steel tube arch bridge

The invention designs a method for selecting a pouring scheme of a large-span concrete-filled steel tube arch bridge. The method comprises the following steps: step 1, summarizing m evaluation indexes for determining a sequence influencing the large-span concrete-filled steel tube arch bridge; 2, setting parameter information of the scheme, and establishing a finite element model according to the parameter information; step 3, forming a forward matrix X; 4, performing standardization processing on the forward matrix X to obtain a matrix Z; 5, determining the weight omega j of each evaluation index; step 6, determining an optimal vector and a worst vector; and step 7, solving reasonable indexes of each perfusion sequence scheme, and sequencing to determine a final perfusion scheme. By means of the method, the pouring sequence with the small arch rib structure stress, the excellent line shape and the good stability can be rapidly selected. 本发明设计一种大跨度钢管混凝土拱桥灌注方案选取方法，包括以下步骤：步骤1，归纳出决定影响大跨度钢管混凝土灌注拱桥顺序的的m个评价指标；步骤2，设