摘要
以某钻孔灌注桩3 400 t锚桩法静载试验为案例,在试验中对该桩上部采用了内外双套管设计处理,进行静载的同时测试其套管段桩身应力的变化。通过对试验过程中桩基整体受力变形与套管段应力应变数据的分析,消除了桩基受力过程中双套管段范围内的侧摩阻力对变形数据的影响,获得了更加准确的有效桩基受力变形数据,确定了有效桩基部分的“真实”承载力,为进一步研究深部土体的受力变形规律打下良好的基础。
In this paper we measured the stress of the pile to test the changes in the pile body stress of the double casing section while the static load test of 3400 tons by anchor pile method on Bored pile,which is part designed to comprises inside and outside double casing. By analyzing relationship between the test data of the piles’ force-deformation and the preceding stress data of the casing section during the test,we obtained more accurate data of force-deformation of the pile which eliminate effects of the pile friction of the dual casing section. The “true” bearing capacity of effective pile is revealed,which lays a good foundation for further study on the law of stress and deformation of deep soil.
作者
王峥辉
WANG Zhenghui(Nanjing Nanda Geotechnical Engineering Co.,Ltd.,Nanjing Jiangsu 210039,China)
出处
《工程质量》
2022年第3期54-58,共5页
Construction Quality
关键词
双套管
桩基静载
锚桩法
侧摩阻力
double casing
static load test
the method of anchor pile
the pile friction
