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组合板的纵向受拉钢筋具有“应力超前”现象；
RC梁的屈服位移角与受拉钢筋屈服强度、截面高度有关；
The drift ratio of RC beams at yielding is related to the yielding strength of longitudinal bars and depth of beam cross section.
本文根据试验和有限元计算结果，建立了一种受拉钢筋应力控制计算公式。
Based on pile-up beam tests and finite element analysis of reinforced con-crete, a new type formula of reinforcing steel stress for reinforced concrete pile-up beam is established in this paper.
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