压力分散型抗浮锚杆技术及其工程应用

结合实际工程，对压力分散型抗浮锚杆试验、设计、施工及检测方面的技术难点进行了深入的探讨。压力分散型锚杆，特别是U型环绕承载体锚杆具有良好的耐久性，锚固效率高，有利于地下结构的应力与变形协调，减少工程造价，作为永久性抗浮锚杆具有明显的技术优势。压力分散型锚杆仅在设计荷载下各单元锚杆承担相同的荷载，压力分散型锚杆的张拉试验应采用等荷载同步张拉方法。

PRESSURE-DISPERSIVE ANTI-FLOAT ANCHOR TECHNIQUE AND ITS APPLICATION TO ENGINEERING

Combining a practical case, the technique of pressure dispersive anti-float anchor on experiment, design, construction and examination is studied. The pressure-dispersive anchor, especially the U-shaped anchor surrounding load body has good endurance, high anchor efficiency, and advantage of stress and deformation coordination of the underground structure and reduces the structure-building price. It has obvious technique advantage as the permanent anti-float anchor. Only at design tensile load does each unit of the pressure-dispersive anchor undertake the same tensile load; the identical load and synchronous tension method should be adopted to tension test of pressure-depressive anchor.