摘要
厦门某基坑工程,设二层地下室,基坑开挖深约10.8m,周长约1100m,面积约7.5万平方米。基坑支护范围内淤泥～淤泥质土层底平均埋深约12m。在厦门首次采用钻孔灌注桩结合普通预应力锚索与旋喷扩孔锚杆的柔性支护设计。基坑开挖过程中变形稳定,目前已施工完毕。证明在软土深基坑中采用柔性支撑是可行的。本文提出了旋喷扩孔锚杆柔性支护的设计施工原则。
Abstract： A foundation pit engineering in Xiamen has two layers basement with excavation depth of approximately 10.8m, circumference of about 1100m and area of about 75,000 square meters. Average depth of soft clay within the bottom of pit supporting is about 12m. It is the fist application in Xiamen of flexible supporting design with bored piles combined ordinary pre - stressed anchor cable and Churning rea- ming anchor. The deformation of foundation pit is stable, and now the construction is completed. Flexible support is verified to be feasible in deep excavation in soft clay. The principles of design and construction of Churning reaming anchor is presented.
出处
《福建建设科技》
2013年第4期9-11,共3页
Fujian Construction Science & Technology
关键词
柔性支撑
软土
深基坑
扩孔锚杆
Flexible Support
Deep Foundation Pit
Soft Clay
Churning Reaming Anchor
