喷锚支护在高层建筑深基坑支护中的应用

The Application of Spraying-anchor in Supporting and Protecting the Deep Basic Pit of High Layer Building

高层建筑深基坑开挖过程中边坡稳定不容易保证,喷锚支护体系是将锚杆与滑裂面以外土体连成一个整体,再通过外拉系统与深基坑边坡组成一个整体受力体,承受主动土压力,利用土层的锚固力,维持被锚固体(边坡)的稳定,从而使得开挖的基坑获得广阔的空间。

It is hard to guarantee the stabilization of the side slope in the digging process of the deep basic pit of high layer building. Spraying-anchor system is used to connect the anchor pole and the zone of fracture into the whole, and then by using the outside pulling system to connect the slope of deep basic pit into a whole, which bears the active pressure from soil. By using of anchoring power from the soil layer, maintain the stabilization of the anchor solid（ the side slope）, so that the vast space for digging can be obtained.