當既有建筑物無法采用結構加固方案來滿足抗爆要求時，采用在建筑物外增設獨立的鋼筋混凝土或鋼結構墻體的方法來進行抗爆保護。

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.