在全寿命设计理念指导下，提出一种将现有落水管方案移到钢筋混凝土周边柱的方案。该方案的主要特征是：通过预埋将落水管移入周边柱内，在建筑物使用周期内用于屋面排水，待建筑寿命结束时，落水管用作拆除炮孔。为了论证该方案的可行性，首先，验证了预埋落水管材料和直径能同时满足排水功能和拆除炮孔功能；其次，结合借鉴钢筋混凝土梁轴向预埋孔爆破技术并配合使用新型爆破器材装药长袋，从装药结构和爆破操作两方面论证了落水管用于爆破拆除的可行性；最后，利用有限元分析软件ABAQUS分析了4个不同直径落水管内置入两种截面周边柱时的应力分布和应力应变规律。分析结果表明空心率较小时，预埋管对试件影响很小；为了不对周边柱有显著影响，试件空心率不宜大于2%；结合爆破拆除需要，空心率也不宜小于0.18%。随后指出了管材和混凝土孔接力服务时长足以达到建筑寿命周期；最后阐明了落水管内置后还可提升建筑的美观性，避免盗贼沿落水管攀爬的安全风险。因此，落水管内置入钢筋混凝土周边柱可行。

Under the guidance of the full life cycle design concept, a scheme of moving the existing downspout pipe scheme to the reinforced concrete peripheral column was proposed. The main feature of this scheme is that the downspouts are pre-embedded into the surrounding columns and used for roof drainage during the building's service life. At the end of the building's lifespan, the downspouts were used to remove blast holes. To demonstrate the feasibility of this scheme, first of all, it was verified that the material and diameter of the embedded downspout could simultaneously meet the drainage function and the function of removing the blast hole. Secondly, by drawing on the axial embedded hole blasting technology of reinforced concrete beams and using the new type of blasting equipment, the long bag for loading explosives, the feasibility of using downspouts for blasting demolition was demonstrated from both the charge structure and the blasting operation aspects. Finally, the finite element analysis software ABAQUS was used to analyze the stress distribution and stress-strain laws when two types of cross-sectional peripheral columns were placed in four downspouts with different diameters. The analysis results show that when the hollow rate is small, the embedded pipe has little influence on the specimens. In order to avoid significant impact on the peripheral columns, the hollow rate of the specimens should not be greater than 2%. In combination with the requirements of blasting demolition, the hollow ratio should not be less than 0.18% either. Subsequently, it was pointed out that the relay service duration of pipes and concrete holes is sufficient to reach the building's life cycle. Finally, it is clarified that after the downspout is built in, it can also enhance the aesthetic appeal of the building and avoid the safety risk of thieves climbing along the downspout. Therefore, it is feasible to insert reinforced concrete peripheral columns into the downspout pipe.