考虑桩土共同作用的基础设计探析  

Analysis of Foundation Design for Considering the Pile-Soil Interaction

作　　者：林航 LIN Hang(Fuzhou Architectural Design Institute Co.,Ltd.,Fuzhou 350011)

机构地区：[1]福州市建筑设计院有限责任公司,福建福州350011

出　　处：《福建建筑》2023年第12期73-76,共4页Fujian Architecture & Construction

摘　　要：传统观点认为,桩土共同作用需按照桩土变形协调原则,确定桩土的应力分配。但桩与土的变形计算极为困难,设计难度极大。桩与土的应力分配变化,是整个复合桩基的内力调整,也是桩土间安全储备的转移,其对复合桩基的承载能力并无影响,仅影响沉降量。在控制复合桩基总安全度和变形前提下,桩土共同作用无需考虑桩土变形协调,按强度和变形双重控制进行桩基设计,并应用于工程实践,取得良好的经济效益。The traditional view holds that the pile-soil interaction requires the determination of stress distribution between piles and soil based on the principle of pile soil deformation coordination,and the calculation of pile soil deformation is extremely difficult,making the design extremely difficult.The change in stress distribution between piles and soil is the internal force adjustment of the entire composite pile foundation and the transfer of safety reserves between piles and soil.It does not affect the bearing capacity of the composite pile foundation,only affects the settlement amount.Under the premise of controlling the overall safety and deformation of composite pile foundations,the interaction between piles and soil does not need to consider the coordination of pile soil deformation.Pile foundation design is carried out based on dual control of strength and deformation,and applied to engineering practice,achieving good economic benefits.

关 键 词：桩土共同作用 变形协调 复合桩基 安全储备 桩基设计 

分 类 号：TU47[建筑科学—结构工程]