摘要
围绕中高层建筑悬挑结构的绿色选型,从结构性能、施工效率、经济性及环保性等多个维度,对钢结构与混凝土结构展开深入对比分析。结合湘江科学城创新港项目,利用软件构建多方案计算模型。研究表明,相较于混凝土结构,钢桁架大悬挑屋盖结构造价降低28.5%,工期缩短62.5%,使用空间因大跨度属性得到有效拓展。在技术性能上,钢结构楼承板体系自重减轻40%,刚度提升30%,抗震性能增强 20%~30%,变形控制在L/400(L为跨度)以内。在绿色环保方面,钢结构方案碳排放减少15%,建筑垃圾减少60%。彰显钢结构在大悬挑屋盖结构应用中的广阔前景,为工程选型提供理论与实践参考。
Focusing on the green selection of overhanging structures for medium and high-rise buildings,an in-depth comparative analysis of steel and concrete structures is carried out from the perspectives of structural performance,construction efficiency,economy and environmental protection.A multi-scenario calculation model is constructed using software in combination with the Xiangjiang Science City Innovation Port project.The study shows that compared with the concrete structure,the steel truss large-span roof structure reduces the cost by 28.5%,shortens the construction period by 62.5%,and expands the use space effectively due to the large-span property.In terms of technical performance,the self-weight of steel floor joist system is reduced by 40%,the stiffness is increased by 30%,the seismic performance is enhanced by 20%to 30%,and the deformation is controlled within L/400(L is span).In terms of green environmental protection,the steel structure programme reduces carbon emission by 15%and construction waste by 60%.It highlights the broad prospect of steel structure in the application of large overhanging roof structure,and provides solid theoretical and practical reference for engineering selection.
作者
李国民
钟婷
李明
王霄翔
陈朋
郭斌
刘筱钰
LI Guomin;ZHONG Ting;LI Ming;WANG Xiaoxiang;CHEN Peng;GUO Bin;LIU Xiaoyu(Hu'nan Construction Engineering Group Co.,Ltd.,Changsha 410008,China)
出处
《绿色建筑》
2025年第4期2-8,共7页
Green Building
基金
湖南省科技创新计划(2022RC1185)
湖南省企业科技创新创业团队支持计划(湖南建工低碳智能建造与新型建筑工业化创新创业团队)。
关键词
中高层建筑
大悬挑结构
钢结构
混凝土结构
绿色环保
medium and high rise buildings
large cantilevered structure
steel structure
concrete structure
green building
green and eco-friendly
