摘要
基于全寿命周期理论,在明确计算边界的基础上,确定基坑混凝土支撑及H型钢支撑体系在生产、建造以及拆除等工程阶段将产生碳排放的具体计算类目;再依据全国统一建筑工程基础定额、建筑碳排放计算标准和文献中的调研数据,计算出单位工程量的钢筋混凝土支撑与H型钢支撑体系的碳排放量,从而进行两种支撑全生命周期碳排放量的定量对比。结果表明:原材料生产和周转运输分别是混凝土和钢支撑碳排放的主要来源,型钢支撑的碳排放总量约为等价混凝土支撑的20%。因此,基坑预制H型钢支撑在碳排放方面相对来说优势较大,是更加环境友好的选择。
Based on the whole life cycle theory,and on the basis of clear boundaries,this paper determined the specific carbon emission calculation categories of the concrete bracing and H-beam bracing system in the stage of the production,construction and demolition engineering.Then,according to the national unified basic quotas for construction foundations,building carbon emissions calculation standard and survey data in the literature,the carbon emissions of the concrete bracing and the H-shaped steel bracing system per unit engineering amount were calculated,so as to make a quantitative comparison of carbon emissions in the whole life cycle of the two bracing systems.The results showed that raw material production and turnover transportation are the major sources of carbon emission from concrete and steel bracing respectively,and the total carbon emission from steel H-shaped steel bracing is about 20%of that from equivalent concrete bracing.Therefore,prefabricated H-shaped steel bracing for foundation pits has a greater advantage in terms of carbon emissions and is a more environmentally friendly choice.
作者
袁青云
孙旻
Yuan Qingyun;Sun Min
出处
《重庆建筑》
2022年第7期33-37,共5页
Chongqing Architecture
关键词
基坑支撑体系
碳排放计算
全生命周期
the bracing system for foundation pits
carbon emission calculation
whole life circle
