止水帷幕后插筋与旋喷锚索联合支护在软土场地的应用

The Application of Combined Support Form of Post Reinforcing Waterproof Curtain and Jet Grouting Anchor in the Soft Site

针对高水位的软土场地中普通锚索易塌孔、成孔难、锚固力不足等问题,提出了创新工艺的旋喷锚索配合止水帷幕后插筋的联合支护体系。结合旋喷锚索在郑州某基坑工程中的应用,利用理论计算、现场试验和工程实测对其设计计算、施工工艺以及支护效果进行了分析评价。各项监测数据表明,该支护形式安全、经济。

According to the problems of common anchor drills difficultly, the hole collapse easily and the deficiency of anchoring force in the soft site, this paper puts forward post reinforcing waterproof curtain and jet grouting anchor combined support form. Connecting the application of jet grouting anchor during a foundation excavation engineering in Zhengzhou, this paper analyzes the design calculations and construction technology to evaluate the effect of supporting, by utilizing theoretical calculations, field trials and engineering monitoring. The data suggests that this is a safe but economical support form.