伞式自扩锚应用效果研究

通过伞式自扩锚在工程中的应用及使用后的开挖观察，结合有无伞式自扩锚的位移实测资料，研究了预钻孔施工并注浆的伞式自扩锚锚固端特征及应用效果。在此基础上，进一步总结了这一新技术的质量控制方法，证实该装置通过注浆施工工艺可以在锚固段形成浆体、钢材等加筋体相结合的扩大头，有效地控制被锚固体的位移。

Study on effect of umbrella-shaped self-expanding anchor after its application

Based on the observation and research of the umbrella-shaped self-expanding anchor excavated in-situ after its application in foundation pit supporting system, according to monitoring data with and without this kind of anchor, its characters of expanded section and effect in application after grouting have been analyzed. And its quality control method is put forward.The results show this kind of anchor can form expanded section with cement and steel in the earth,so the displacements of the anchored thing can be effectively controlled.