摘要
通过对延安新区某湿陷性黄土挖方区高层建筑物螺杆桩承载力静载试验的分析,表明螺杆桩具有摩擦-端承桩的特征,单桩承载力较高,在同样的地质条件下,在超过一定深度后,桩长的增加对桩的承载力特征值影响并不大。由于螺杆桩在黄土地区具有高承载力、低污染、经济合理的优势,该工艺在延安新区湿陷性黄土挖方区具有很好的应用前景。但目前螺杆桩工艺在延安新区湿陷性黄土挖方区及填方区应用研究很少,在以后的应用中,建议对螺杆桩的侧阻力和端阻力的影响因素以及桩的承载力计算方法进行分析和研究。
Through the static load test of the bearing capacity of the screw piles of high-rise buildings in the collapsible loess area of Yah＇an New Area, it is shown that the screw piles have the characteristics of friction-end bearing pile and the bearing capacity of single pile is higher. Under the same geological conditions, the increase of pile length after a certain depth has little effect on the bearing capacity of pile. As the screw pile in the loess area has a high bearing capacity, low pollution, economic and reasonable advantages, the process in Yan＇ an New Area of collapsible loess excavation area has a good prospect. However, there are few researches on application of screw pile technology in the excavated and filled areas of collapsible loess in Yan＇an New Area. In the future application, it is suggested to analyze and study the influence factors of side resistance and end resistance of screw pile and the calculation method of bearing capacity.
出处
《岩土工程技术》
2017年第3期109-114,共6页
Geotechnical Engineering Technique
关键词
湿陷性黄土地区
螺杆桩
静载试验
承载力
collapsible loess area
screw pile
static load experiment
bearing capacity
