湿陷性黄土地区螺杆桩承载力静载试验研究
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。
Abstract:Through the static load test of the bearing capacity of the screw piles of high-rise buildings in the collapsible loess area of Yan’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.
中文标题：
湿陷性黄土地区螺杆桩承载力静载试验研究
Experimental Study on Static Load Bearing Capacity of Screw Piles in Collapsible Loess Area
作者：
高建中1,张瑞松2
Gao Jianzhong1,Zhang Ruisong2
作者简介:高建中,男,1968年生,汉族,陕西宜川人,高级工程师,从事结构设计工作。E-mail:460745175@qq.com
通讯地址：
1. 延安市新区管理委员会, 陕西延安 716000; 2. 机械工业勘察设计研究院有限公司, 陕西西安 710043
1.Yan'anNewDistrictManagementCommittee,Yan'n716000,Shaanxi,China; 2.ChinaJikanResearchInstituteofEngineeringInvestigationsandDesignCo.,Ltd,Xi'an710043,Shaanxi,China
中图分类号:TU473
doi:10.3969/j.issn.1007-2993.2017.03.001
出版物：岩土工程技术
收稿日期:2017-01-06
网络出版日期:2021-07-06
关键词:湿陷性黄土地区,螺杆桩,静载试验,承载力
Key words:collapsible loess area,screw pile,static load experiment,bearing capacity
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