挤扩支盘桩承载变形特性的试验研究及承载力计算  

EXPERIMENTAL STUDY OF BEARING AND DEFORMATION BEHAVIOR OF SQUEEZED BRANCH PILE AND ITS BEARING CAPACITY CALCULATION

作　　者：巨玉文[1] 梁仁旺[1] 白晓红[1] 张善元[1] 

机构地区：[1]太原理工大学土木工程系,太原030024

出　　处：《工程力学》2003年第6期34-38,共5页Engineering Mechanics

摘　　要：根据单桩静载荷试验及桩身轴力的测试结果,深入分析了竖向荷载作用下挤扩支盘桩的荷载传递机理和变形特性;同时给出挤扩支盘桩的单桩承载力计算公式。通过分析计算,指出了支盘的承力特性具有明显的时间效应和端承性质,揭示了支盘桩高承载力和S型Q-S曲线的内涵。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 in this paper. An equation is developed to calculate the vertical bearing capacity of a single pile. The obvious time effect and end-bearing behavior of bearing disks are pointed out by means of analysis. The high bearing capacity and S-shaped Q-S curve of squeezed branch piles are highlighted.

关 键 词：挤扩支盘桩 荷载传递机理 变形特性 承载力 静载荷试验 

分 类 号：TU473[建筑科学—结构工程]