摘要
基于合肥市降雨特征对某改建种植屋面的荷载进行计算,然后基于全生命周期评价法构建了种植屋面的碳排放和碳汇计算方法,并利用该方法对该改建种植屋面的碳排放和碳汇进行了计算.结果表明,考虑降雨特征计算得到的该改建种植屋面荷载设计值为6.823 k N/m^(2),小于原屋面的荷载设计值(7.324 kN/m^(2)),说明其改建的改建方案可行,且改建后的种植屋面不仅没有对原屋面产生不利影响,而且还使原屋面结构的安全性有所提升.经计算可得,该改建种植屋面全生命周期(50 a)内的碳排放总量为60461.623 kg,碳汇总量为197305.534 kg,其中建设阶段的碳排放量为20577.749 kg,运行维护阶段的碳排放量为21363.900 kg,拆除回收阶段的碳排放量为18519.974 kg;该改建种植屋面运行的前两年,其碳排放总量为21432.305 kg,碳汇总量为33211.006 kg,说明在该改建种植屋面运行的第二年即可实现对其建设碳排放的回收,由此表明该改建种植屋面的节能减排效果明显.
The load of a reconstructed planted roof was calculated by combining the rainfall characteristics of Hefei City,and then the calculation method of carbon emission and carbon sink of the planted roof was constructed based on the life cycle evaluation method.The results show that the calculated design load of the reconstructed planted roof is 6.823 kN/m^(2)when considering the rainfall characteristics of Hefei,which is less than the design load of the original roof(7.324 k N/m^(2)),indicating that the reconstruction scheme is feasible,and the reconstructed planted roof not only has no adverse affect the original roof,but also improves the safety of the original roof structure.It can be calculated that the total carbon emission in the whole life cycle(50 a)of the reconstructed planting roof is60461.623 kg,and the total carbon sink is 197305.534 kg.The carbon emission in the construction stage is 20577.749 kg,the carbon emission in the operation and maintenance stage is 21363.900 kg,and the carbon emission in the demolition and recovery stage is 18519.974 kg.In the first two years of the operation of the reconstructed planting roof,the total carbon emission is 21432.305 kg,and the total carbon sink is 33211.006 kg.It shows that in the second year of operation of the reconstructed planting roof,the recovery of its construction carbon emission can be realized,indicating that the reconstructed planting roof has obvious effect of energy saving and emission reduction.
作者
丁敬华
DING Jinghua(Hefei Key Project Construction Administration Bureau,Hefei 230001,China)
出处
《河南科学》
2022年第12期1941-1949,共9页
Henan Science
基金
合肥城市区域环境雨水收集利用关键技术及应用体系研究(W2020JSKF0680)。
关键词
改建种植屋面
荷载
降雨
碳排放
碳汇
reconstructed planting roof
the load
rainfall
carbon emission
carbon sequestration
