Under the background of a long-span rigid-framed flexible CFST arch bridge, the catholicity method to compute the ultimate capacity is brought forward. 以某大跨度剛性梁柔性鋼管硅拱橋為例，總結了具有較普遍意義的大跨度橋樑極限承載力計算方法。
Results show that in order to determine the ultimate load capacity of the derricks, both geometrical and material nonlinearities must be taken into consideration. 計算結果表明，只有採用幾何和材料雙重非線性的分析方法，才能準確評估井架的極限承載力。
