In addition, this part discussed the geometric and double nonlinear ultimate bearing capacity aiming at numerical model and concluded that double nonlinearity must be considered if you want to acquire the ultimate bearing capacity of A-shaped mast.

• 并对数值模型井架进行了几何非线性和双重非线性极限承载性能分析，得出预测A形井架的极限承载力必须考虑双重非线性的影响。