【摘要】 混凝土收缩徐变影响着钢箱混凝土构件应力—应变状态。在混凝土收缩和徐变过程中迫使钢箱参加工作，使混凝土产生附加拉应力，钢箱产生附加压应力，给出了附加应力的计算公式。更多还原

【Abstract】 The states of stress strain in steel box concrete is influenced by the concrete constraction and creep, which result that the additional tensile stresses are induced in the steel tube. In this paper, the effect of concrete creep and constraction is taken into amount and a new formula is devetoped to calculate the stresses of steel box concrete.更多还原