从徐变次内力计算的等效荷载向量出发,应用等效弹性模量法推导了一次落架混凝土结构的徐变次内力求解过程和步骤,证明了刚性支承一次落架等截面混凝土结构徐变次内力为零的结论。同时,得出了弹性支承超静定混凝土结构即使一次落架,其徐变次内力和位移都不为零的不同特点。最后,给出了工程应用算例。 Based on the equivalent load vector calculated from the internal forces of creep, the creep sub-internal force solution process and steps of a falling gear concrete structure are deduced by the equivalent elastic modulus method. It is proved that the creep sub-internal force Conclusion of zero. At the same time, different characteristics of creep sub-internal forces and displacements are obtained when the elastic support statically indeterminate concrete structure is dropped once. Finally, an example of engineering application is given.