弹性支承一次落架超静定混凝土结构的徐变次内力

摘要

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.%Solution step and procedure of secondary inner force of creep has been deduced from the equivalent load vector with the effective modulus method. The conclusion bas been drawn that the value of secondary inner force of creep is zero in the statically indeterminate concrete structure including elements activated simulataneously with rigid restriction, but both the value of displacement and inner force of creep are not zero in structure with elastic restriction, even activated simulataneously. Finally, application examples in engineering were listed.