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破前漏(LBB)设计是三代核电技术的重要技术特征之一,但国内直到现在也没有受认可的LBB设计专用程序,开发出受认可的LBB设计程序具有重要意义。简单介绍LBB设计中断裂力学分析、裂纹张开位移分析以及泄漏率计算的技术背景以及我国相关关键程序的研发。算例验证结果表明,自主开发的程序具有较高的精度,进一步完善和验证后可以应用于实际工程。
The LBB design is one of the important technical features of the third generation nuclear power technology. However, up till now, there is no recognized LBB design special program in China and it is of great significance to develop a recognized LBB design program. A brief introduction to the LBB design fracture mechanics analysis, crack open displacement analysis and calculation of leakage rate technical background and the development of China’s key procedures. The results of example verification show that the self-developed program has higher accuracy and can be applied to the actual project after further improvement and verification.