岩土力学Issue(7)：1958-1964,7.
轴向荷载对斜桩水平承载特性影响试验及理论研究
Test and theoretical research on influence of axial load on lateral bearing capacity of batter piles
摘要
Abstract
When batter pile group are under lateral load, the foundation piles in pile group are subjected to radial load, axial load and bending moment. In order to study the influence of axial load on lateral bearing capacity of batter piles, large-scale model tests of three single piles and a 1×2 batter pile group have been conducted in a larger soil tank. It is found that the upward axial force on the pile top decreases the lateral stiffness and the lateral ultimate bearing capacity of batter pile; while the downward axial force enhances the horizontal stiffness and the lateral ultimate bearing capacity of batter pile. Based on the assumption of wedge failure of the shallow soil around piles, considering the influence of axial load on piles, a formula for calculating the lateral ultimate resistance force of soil is deduced. Then, a p-y curve method for resistance force of soil around piles is proposed. Finally, the formula and the proposed p-y curve method for batter pile are verified by model tests and field tests.关键词
斜桩/轴向荷载/水平荷载/p-y曲线Key words
batter pile/axial load/lateral load/p-y curve分类
建筑与水利引用本文复制引用
..轴向荷载对斜桩水平承载特性影响试验及理论研究[J].岩土力学,2013,(7):1958-1964,7.
