当既有建筑物无法采用结构加固方案来满足抗爆要求时，采用在建筑物外增设独立的钢筋混凝土或钢结构墙体的方法来进行抗爆保护。

When an existing building cannot use structural reinforcement schemes to meet the anti-explosion requirements, an independent reinforced concrete or steel structure wall is added outside the building for anti-explosion protection.