摘要
浅层地热是一种具有竞争力的可再生清洁能源,能源桩将换热管植入桩身,形成地源热泵系统地下循环回路,既支撑上部结构,又充当地下换热器。双碳战略下推广应用能源桩,特别是大直径超长能源桩可高效开发浅层地热。目前针对大直径超长能源桩的机理研究和工程应用十分有限,在设计方法、施工技术和检测手段方面缺乏技术积累。本文基于芜湖LNG储罐桩基工程,设计施工了多根长53m,直径1.2m的能源试验桩,通过现场试验对大直径超长能源桩的承载力、完整性、热交换能力、管阻等测试结果进行定量分析,初步验证了大直径能源桩技术的可行性和实用性,研究成果可为该技术进一步推广应用提供技术参考。
Shallow geothermal is a competitive renewable energy.The energy pile embeds the heat exchange tube into the pile body to form an underground circulation loop of the ground source heat pump system,which not only supports the superstructure,but also acts as an underground heat exchanger.The promotion and application of energy piles under the dual-carbon strategy,especially the large-diameter and super-long energy piles,can effectively develop shallow geothermal.At present,research on the large diameter and super-long energy piles as well as their engineering applications is limited in the phases of design methods,construction techniques and testing methods.Hence,a number of 1.2m diameter and 53m long energy piles are designed and constructed in Wuhu LNG terminal,which helps to gain the experiences in design,construction and testing of these piles.Through the field test,the bearing capacity,pile integrity,heat exchange efficiency and pipe resistance of large-diameter and super-long energy piles are quantitatively analyzed.The results demonstrate the feasibility and applicability of this technology,and the findings can serve as a reference for future practical applications.
作者
刘洋
肖立
赵铭睿
杜风雷
王涛
张广哲
何玉普
王旭
Liu Yang;Xiao Li;Zhao Mingrui;Du Fenglei;Wang Tao;Zhang Guangzhe;He Yupu;Wang Xu(CNOOC Gas and Power Group,Beijing 100028,China;Institute of Foundation Engineering of China Academy of Building Research,Beijing 100013,China;China Hebei Construction and Geotechnical Investigation Group Ltd,Shijiazhuang 050227,China;China Construction First Group Construction&Development Co.,Ltd,Beijing 100102,China)
出处
《建筑科学》
北大核心
2025年第7期142-150,共9页
Building Science
基金
住房与城乡建设部科学技术项目(2022-K-111)。
关键词
能源桩
浅层地热
管阻
传热分析
桩基施工
energy pile
shallow geothermal energy
tube resistance
heat transfer analysis
pile construction
