Behaviour and In-situ Tests of Self-Drilling Prestressed Anchors
The self-drilling prestressed anchor is a type of ground anchor used to transmit the applied tensile load into soil or rock through cement grout. The paper outlines a general construction procedure using a special self-drilling bit. Based on the loadtransfer mechanism, the construction procedure is presented for load-dispersed ground anchors. In-situ pullout tests were carried out for three selfdrilling prestressed anchors of the load-dispersed compression type. The test results showed that the ultimate pullout capacity could reach 800 - 1,000 kN. After prestressing, the displacement of the anchor head was decreased by 50 ％ — 70 ％ for a low load level and 30 ％-40 ％ for a high load level, and the displacement induced by elastic deformation was much smaller than that induced by plastic deformation. These results demonstrate that this anchor type is suitable and economical for practical engineering needs.
Anchors Field testing Geotechnical engineering
Xinyu XIE Kai ZHU Jinyao HUA Hongwei YING Kaifu LIU
Zhejiang University, Hangzhou, 310058, China Huafeng Construction Limited Company, Ningbo, 315040, China Zhejiang Sci-Tech University, Hangzhou 310018, China
国际会议
合肥
英文
3536-3542
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）