挤扩支盘桩水平承载力计算和影响因素分析  

CALCULATION AND INFLUENCE FACTOR ANALYSIS ON LATERAL BEARING CAPACITY OF SQUEEZED BRANCH AND PLATE PILE

作　　者：高笑娟[1] 刘丰军[1] 李跃辉[1] 朱向荣[2] 

机构地区：[1]河南科技大学建筑工程学院,河南洛阳471003 [2]浙江大学软弱土与环境土工教育部重点实验室,浙江杭州310027

出　　处：《工程力学》2009年第7期97-104,共8页Engineering Mechanics

基　　金：河南科技大学博士基金项目(09001210)

摘　　要：根据张氏法对普通桩在水平荷载下的解析解,对挤扩支盘桩桩身按直径不同分成若干段,在每一段上运用直桩的解析解。由各段在共用节点处的变形协调条件,结合初始条件和边界条件,求出所需参数,得到挤扩支盘桩水平荷载作用下的解析解。计算一定荷载作用下桩身的水平位移,并与有限元计算结果相比较,然后用有限元方法分析了桩身参数和桩周土参数对挤扩支盘桩水平承载力的影响。Based on the analytical solution of Zhang method for a straight pile under lateral loads, the squeezed branch and plate pile is divided into different parts in accordance with the diameter of each part, and using analytical solution of Zhang in every part. Using the deformation compatibility conditions on common points, boundary conditions and initial conditions, the equilibrium equations are listed and analyzed. The analytical solution of the squeezed branch and plate pile is obtained and the lateral displacement is calculated under a certain lateral load. The results of finite element method are shown to be in good agreement with that of the analytical solution, and then the influence factors of the pile itself and soil around the pile to lateral bearing capacity under lateral loads are studied in detail.

关 键 词：挤扩支盘桩 承载力计算 有限元法 水平荷载 影响因素 

分 类 号：TU473.1[建筑科学—结构工程]