摘要
利用大量静载试验绘制出的Q -S关系曲线 ,分析了太原地区大口径灌注桩的承载特性 ,又结合规范经验公式 ,在分析了灌注桩竖向承载力影响因素的基础上 ,提出了估算单桩极限承载力时侧摩阻力与端阻力的取值方法。并建议对冲击成孔灌注桩选取中间值估算偏低时可采用 1.1～ 1.5的修正系数进行修正。
In this paper, Q S curve is drawn according to a l ot of static tests, load bearing characteristic of large bore driven cast in place pile in Taiyu an i s analyzed. At the same time, combining standard empirical formula, on the base of analyzing effect factors for the piles' vertical bearing capacity, the valui ng method of side friction resistance and end resistance when estimating single pile's limit load bearing is put forward, and it is suggested that in choosing intermediate value on attacked pore forming piles, when the value is lower, the compensation factor of 1.1~1.15 may be adopted.
出处
《山西建筑》
2001年第5期25-26,共2页
Shanxi Architecture
关键词
大口径灌注桩
静载试验
竖向承载力
太原市
large-bore bored concrete pile,static test, vertical load-bearing
