| 1. | 3 . this thesis analyses and contrasts the coefficient of creep of concrete filled steel tubes , develops the calculation formulas of equivalent elastic modulus , adopts common structure analyses procedure ansys to calculate the redistribution of section stress in the concrete filled steel tubes arch bridge 同时根据钢管混凝土组合结构的受力特点,应用“龄期调整的有效弹性摸量法”推导出核心混凝土考虑徐变影响后的徐变等效弹性模量计算公式,从而利用通用有限元ansys进行钢管混凝土拱桥的应力重分布计算。 |