钢管混凝土桁架拱肋抗弯刚度研究

该文针对四肢格构桁式截面钢管混凝土拱肋,考虑影响钢管混凝土桁式拱肋抗弯刚度的多种因素,采用SAP2000程序,通过大量的结构模拟计算,给出各影响因素与挠度的关系,应用拟合的方法得出各影响因素与挠度的关系式,再由挠度与刚度的关系,推导出刚度与各影响因素的拟合关系式,并通过与传统计算理论的分析比较,验证计算钢管混凝土桁式拱肋抗弯刚度计算公式。

Study of Flexural Rigidity of Steel-pipe Concrete Truss Arch Rib

In light of 4-limb lattice truss section of steel-pipe concrete arch rib,and considering many factors of the influence on the flexural rigidity of steel-pipe concrete truss arch rib,the article uses SAP2000 program to give the relationship of various influence factors with the deflection through a large number of the structural analog calculation.The application of the fitting method gives the relation formula of various influence factors with the deflection.Then the relationship of the deflection with the rigidity is used to derive the fitting relation formula of the rigidity with various influence factors.And through the analysis and the comparison with the traditional calculation theory,it is to verify the calculation formula to calculate the flexural rigidity of steel-pipe concrete truss arch rib.