According to experimental stress concentration factor data of tangential nozzle belt zone, a empirical formula is proposed by numerical analysis for calculating stress concentration factor in tangential nozzle belt zone.

• 从实测的接管环带区应力集中系数数据出发,对斜插接管环带区的应力集中系数进行了数值分析,提出了一个可为工程实际应用的估算公式。