为找出框架端节点抗震性能的优良设计组合，基于正交试验原理建立了L9(34)正交表并完成了9组拟静力试验。以A（混凝土强度）、B（锚固方式）、C（纵筋配筋率）为主要研究因素，且每个因素设计三个水平，分别为A1（C50），A2（C60），A3（C70）；B1（弯折），B2（螺栓），B3（贴焊）；C1（1.63%），C2（2.08%），C3（2.58%）。对试验结果进行方差和极差分析，并通过新复极差（SSR）法进行各因素水平间多重比较。试验结果表明：三个因素对试件延性、耗能能力、极限承载力均有显著影响；各抗震性能指标的主次效应和最优组合如下：延性的影响主次效应为C＞A＞B，最优组合为A3 + B3 + C1；耗能能力的影响主次效应为A＞C＞B，最优组合为A3+B3+C2；极限承载力的影响主次效应为C＞A＞B，最优组合为A3+B1+C3。综合抗震性能可选取的较优组合为A3+B3+C1 或 C2。将各因素水平均值的降幅计算结果作为设计组合对各因素敏感度分析的依据。结果显示各抗震性能指标对不同端节点设计组合的因素敏感程度不同，可针对最大敏感因素进行改性工作。研究结果对实际工程具有一定参考价值和指导意义。

In order to achieve the optimized seismic performance design of frame exterior joints, a L9 (34) orthogonal table was established based on the orthogonal test principle and 9 groups of quasi-static tests were conducted.The main research factors were A (concrete strength), B (anchorage method) and C (longitudinal reinforcement ratio).Each factor was designed in three levels, namely A1 (C50), A2 (C60) and A3 (C70 ); B1 (bending), B2 (bolt) and B3 (paste welding); C1 (1.63%), C2 (2.08%) and C3 (2.58%).The test results were processed by the variance and range analysis, and then multiple comparisons were performed by the new multiple range method (SSR method).The results show that all of the three factors have significant effects on the ductility, energy consumption and ultimate bearing capacity of specimens.The ranking of the seismic performance influencing factors and their optimal combination are as follows: the order of influence on ductility is C>A>B, and the optimal combination for ductility is A3+B3+C1; the order of influence on energy dissipation capacity is A>C>B, and the optimal combination for energy dissipation capacity is A3+B3+C2; the order of influence on ultimate bearing capacity is C>A>B, and the optimal combination for energy dissipation capacity is A3+B1+C3.The preferred combination for comprehensive seismic performance is A3+B3+C1 or C2.The calculation results of the decrease rate of the average value of each factor were used as the basis for the analysis of the sensitivity of design combinations to each factor.The results show that each seismic performance index has different sensitivity to the factors of different exterior joints design combinations, and modifications could be performed aiming at the most sensitive factors.The research results have certain reference value and guiding significance for practical engineering.