摘要
通过对支盘桩的静载荷试验和对桩身轴力的测试,分析了桩在竖向荷载作用下的荷载传递机理和沉降特性,测试了桩身侧摩阻力和承力盘的端承力分担荷载的比例。指出工作荷载下支盘分担的荷载比例高于60%;桩侧摩阻力充分发挥时桩顶的沉降约为0.6%d;支盘间距3.57d没有明显影响承载力的发挥。
Based on the results of static loading tests and measurement of axial forces,the load-transferring mechanism and deformation behavior of vertically loaded squeezed branch piles are investigated and discussed.The ratio of skin friction and end-capacity of disk are calculated.It is found that the expanded branches support the axial load in excess of 60% under ultimate capacity.The settlement of pile top is 0.6%d when the skin friction capacity is at its maximum value.The stress superposition efficiency between two plates is not very noticeable even when the space of the two plates is only 3.57d.
出处
《河南科技大学学报（自然科学版）》
CAS
2005年第5期61-64,共4页
Journal of Henan University of Science And Technology:Natural Science
基金
河南省重大科技攻关资助项目(53120087)
关键词
挤扩支盘桩
荷载传递形状
静载荷试验
侧摩阻
Squeezed branch pile
Load transfer behavior
Static loading test
Skin friction
