太原汾河阶地敏感环境下基坑锚杆的应用

发布时间：2018-06-10 11:39

  本文选题：汾河阶地 + 预应力锚杆　； 参考：《建筑结构》2016年S1期

【摘要】：介绍了护坡桩+预应力锚杆支护体系及三轴水泥土搅拌桩在山西太原汾河阶地敏感地层中的应用。通过提高单根锚杆极限承载力减少锚杆道数,进而减小锚杆成孔造成的地层损失;采用液压双动力双套管施工工艺,有效保护孔壁,降低孔壁受冲刷的程度进而减小地层附加沉降;同时采取多重堵漏措施,确保高水位环境下帷幕体系的有效性;通过监测及时指导施工,动态调整施工参数,使敏感建筑物变形始终位于安全变形范围之内。结果证明此种基坑支护技术在灵敏地层中应用的可行性和有效性。
[Abstract]:The application of slope protection pile and prestressed anchor bolt supporting system and three axis cement soil mixing pile in the sensitive stratum of Fenhe terrace in Taiyuan, Shanxi, is introduced. By improving the ultimate bearing capacity of the single anchor bolt to reduce the number of bolts, and then reducing the formation loss caused by the bolt hole formation, the hydraulic double power double casing construction technology is adopted to effectively protect the hole wall and reduce the hole wall. The hole wall is affected by the degree of erosion and then reduces the additional settlement of the formation. At the same time, multiple plugging measures are adopted to ensure the effectiveness of the curtain system under high water level, and the construction parameters are dynamically adjusted by monitoring the construction in time and the deformation of the sensitive building is always within the safe deformation range. The feasibility and effectiveness of the application in the formation.
【作者单位】： 太原市建筑安全监督管理站;
【分类号】：TU753
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本文编号：2003088