摘要
近年来,混凝土钻扩桩以其自身结构的特殊性及更高的承载性能等特点,越来越受到人们关注.由于桩身刚度大小是影响水平荷载作用下混凝土钻扩桩破坏状态及承载力的主要因素,因此,本文基于独创的半截面桩有限元分析和原状土模型试验结果,通过原状土模型试验得到混凝土钻扩桩在水平荷载作用下的桩周应力分布范围,与有限元模拟软件得到的受力状态进行对比分析,提出了对于不同强度混凝土钻扩桩承载能力的计算模式及不同点,为混凝土钻扩桩在实际工程中的应用奠定理论基础.
In recent years,the concrete drill-and-expanded pile has attracted more and more attention due to its own structural particularity and higher bearing performance.Because the stiffness of the pile body affects the failure state and bearing capacity of the concrete drill-and-expanded pile under horizontal load Therefore,based on the original half-section pile finite element analysis and undisturbed soil model test results,this paper obtains the pile circumference stress distribution range of the concrete drilled and expanded pile under horizontal load through the undisturbed soil model test,and the finite element simulation software The obtained stress state is compared and analyzed,and the calculation modes and different points of the bearing capacity of concrete drilled and expanded piles of different strengths are proposed,which lays the theoretical foundation for the application of concrete drilled and expanded piles in actual engineering.
作者
李祖杰
徐丽娜
牛雷
钱永梅
LI Zu-jie;XU Li-na;NIU Lei;QIAN Yong-mei(School of civil engineering,Jilin Jianzhu university Changchun 130118,China)
出处
《吉林建筑大学学报》
CAS
2021年第3期1-4,20,共5页
Journal of Jilin Jianzhu University
基金
国家自然科学基金项目(51678275,52078239).
关键词
倾覆型
弯曲型
混凝土钻扩桩
破坏状态
有限元模拟
overturning type
curved type
concrete drilled and expanded piles
state of destruction
finite element simulation
