【摘要】 在总结五榀偏心框架结构试验的基础上，指出了这种新型抗震结构具有与纯框架结构相同的延性，但其抗侧刚度，承载能力明显提高，与GBJ11－89变形限值相比较，可充分发挥材料性能，而且其在反复荷载下的耗能性能、塑性性能及强度退化性能均有不同程度的改善。通过对连系梁和偏心支撑框架的分析可知：连系梁及支撑是影响这种结构的主要因素,而且钢筋粘结滑移，P－△效应的不利影响明显的减小，结构不再以形成机构为极限状态的标志。更多还原

【Abstract】 On the base of the experiment results of five RC frames braced eccentricly with steel, it was presented that this kind of composed structure resembles the pure frame in durability and yet its lateral stiffness and load-resistant capability is obviously increased.Compared with the restriction on deformation in code GBJ11 - 89, this new structures fully made use of its materials and improve the capability of energy consumption under repeated loading, plastic durability and degeneration of resistance. Through analying the behaviour of the link beam and eccentrically braced frame(EBF), it was founded that the link beam and brace are major factors inflecting the action of EBF. The inflection of bond-slip and p-△action become less than on the pure frame Furthermore, the index reaching limit state isn’t same time with forming changeable mechanism.更多还原