高压注浆预应力锚杆复合土钉墙在汇金大厦深基坑应用

Application of the Composite Soil Nailiny Wall and Pre-stressed Anchor with High Pressure Grouting in Huijin Deep foundation Excavation

论述高压注浆预应力锚杆的作用机理。根据工程边坡的复杂性,提出采用高压注浆预应力锚杆复合土钉墙加固方法。分析了边坡体的参数和加固设计方案,论述锚杆土钉墙及高压注浆的施工工艺。阐述施工中采用的边坡位移检测方案及结果。工程实践表明,高压注浆预应力锚杆复合土钉墙技术可以用于加固复杂边坡,并取得满意的加固效果。

The mechanism of composite soil nailing wall and pre-stressed anchor with high pressure grouting was proposed,which was used in the engineering complicated slope. The slope parameter and strength plan was analyzed,and the construction technology discussed about composite soil nailing wall and pre-stressed anchor. The detection plan and results of slope displacement were analyzed,which shows successful in strength complicated slope by use of composite soil nailing wall and pre-stressed anchor with high pressure grouting.