新型伞状抗拔锚现场试验研究  

In-situ tests on new umbrella-shaped anti-float anchors

作　　者：梅国雄[1] 徐敏[1] 宋林辉[2] 周峰[1] 宰金珉[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]南京工业大学力学部,江苏南京210009

出　　处：《岩土工程学报》2010年第6期892-896,共5页Chinese Journal of Geotechnical Engineering

基　　金：江苏省六大人才高峰项目(06-F-014);国家自然科学基金项目(50608038);高等学校博士学科点专项科研基金项目(20070294002);江苏省自然科学基金项目(BK2007582)

摘　　要：在研制出新型伞状抗拔锚并对其进行室内模型试验的基础上,为深入了解其实际应用效果和价值,现进一步对其展开现场实测试验。现场试验主要进行了伞状锚施工工艺的分析研究和承载性能的对比评价,施工工艺方面主要是基于现有传统抗拔桩和抗拔锚杆施工工艺上的改进,承载性能方面主要是通过现场静力载荷试验得出伞状锚的实际承载力,并与理论值进行了对比分析。试验结果表明:与传统抗拔桩相比,伞状锚的施工工艺与之类似,但在承载力方面,在等效条件下,新型伞状抗拔锚承载力的提高非常明显,再次证实了伞状锚的优越性,为其工程推广应用奠定了良好的基础。Based on the laboratory model tests on newly developed umbrella-shaped anti-float device,in-situ tests are performed in order to find out the accurate effects of practical application and value.During the in-situ tests,researches on construction techniques and comparison of load-carrying properties of the umbrella-shaped anti-float anchors are carried out.The researches on the construction techniques are mainly based on the improvement of the traditional uplift piles and anti-float anchors.Through the static loading tests,the actual practical capacity of the load-carrying properties of the new umbrella-shaped anti-float anchors can be gained.Comparative analysis on the actual value and the theoretical value is performed.The test results show that the construction techniques of the umbrella-shaped anti-float anchors are similar to those of the traditional uplift piles.Under the equivalent conditions,the capacity of the umbrella-shaped anti-float anchors is of significantly improved,and the advantages of the umbrella-shaped anti-float anchors are well confirmed.

关 键 词：伞状抗拔锚 抗拔桩 施工工艺 静力载荷试验 承载性能 

分 类 号：TU31[建筑科学—结构工程]