预应力管桩复合地基技术在大型油罐地基基础中的应用  

Application of Prestressed Pipe Pile Composite Foundation Technology in Large Oil Tank Foundation

作　　者：刘长春 刘蓦然 于北溟 LIU Changchun;LIU Moran;YU Beiming(Daqing Oilfield Design Institute Co.,Ltd.;Qingdao University of Technology;Dalian University of Foreign Language)

机构地区：[1]大庆油田设计院有限公司 [2]青岛理工大学 [3]大连外国语大学

出　　处：《油气田地面工程》2024年第10期81-84,89,共5页Oil-Gas Field Surface Engineering

摘　　要：大型油罐地基基础设计要求:严格控制大型油罐的整体沉降、整体倾斜、罐壁局部不均匀沉降;同时,不允许罐底板整体呈凹型沉降及局部沉降。一般情况下,天然地基均不能满足大型油罐地基承载力和变形的要求,必须采取地基处理措施改善地基的力学性能,以增加地基的承载能力,减小储罐基础的总沉降量和不均匀沉降。在确定地基处理方案时,要考虑方案的安全可靠性、技术先进性、施工可行性,同时,要尽量节约资金及减小对环境的影响。预应力管桩复合地基处理技术已广泛应用于大型油罐地基基础设计中,其中预应力高强混凝土管桩复合地基在安全可靠性、技术先进性、施工可行性及环保等方面均优于其他桩体复合地基处理方法。随着预应力高强混凝土预制管桩生产成本的降低,加之其施工费用较低,其工程造价已接近其他刚性桩复合地基,在大型油罐地基处理中应用,具有较大的技术及经济优势。The design for the foundation of large oil tanks requires strict control of the overall settlement,overall tilt,and local uneven settlement of the tank wall.At the same time,the overall concave settlement and local settlement of the bottom plate of the tank are not allowed.Under normal circum-stances,the natural subsoil cannot meet the requirements of the bearing capacity and deformation of the large oil tank foundation.Foundation treatment measures must be taken to improve the mechanical properties of the natural subsoil,so as to increase the bearing capacity of the foundation and reduce the total settlement and uneven settlement of the tank foundation.When determining the foundation treatment plan,the safety and reliability,technological advancement and construction feasibility of the plan must be considered.At the same time,efforts should be made to save costs and minimize the impact on the environment.Prestressed pipe pile composite foundation treatment technology has been widely used in large oil tank foundation design.Prestressed reinforced concrete pipe composite foundation is superior to other pile composite foundation treatment methods in terms of safety and reliability,technological advancement,construction feasibility and environmental protection.With the reduction of the production cost of prestressed reinforced concrete prefabricated piles and the low construction cost,the engineering cost of reinforced concrete pile composite foundation project is close to that of other rigid pile composite foundations.It has significant technical and economic advantages in the application of the foundation treatment for large oil tanks.

关 键 词：大型油罐地基 基础设计 预应力管桩 复合地基 环墙基础 

分 类 号：TE972[石油与天然气工程—石油机械设备] TU753[建筑科学—建筑技术科学]