Performance and application of anchor with a new pressure-type of anchor cable with precast anchor head
YUAN Kun1，ZHANG Yufang1，2，LI Jian1，2，WAN Junli1，2
(1. China Academy of Railway Sciences，Beijing 100081，China；2. Railway Engineering Research Institute，China Academy of Railway Sciences，Beijing 100081，China)
Abstract：A new pressure-type anchor cable with precast anchor head was developed to explore enduring and anchoring effect of anchorage system in the high embankment and deep cut slope. The structural characteristics, anchorage mechanism and the method of stress calculation were analyzed. The enduring and anchoring performance of the traditional type of cable of pressure concentrated and the new type of cable of pressure anchor with precast anchor head were compared through the indoor experiments. The anchoring force of the new type of cable of pressure anchor with precast anchor head is 2 times the one of the traditional type of cable. The load carried by the new type of cable of pressure anchor with precast anchor head at the moment of occurring of plastic deformation is 1.6 times of that by the traditional pressure anchor. The range of compressive strain distribution in the grouting body of the new anchor bolt is about 0.5 times of that of the traditional tensions anchor. The zone with the largest compressive strain the traditional pressure-concentrated anchor cable is in the head and the maximum compressive strain is 1 219.7 ??. However，the maximum compressive strain is in the tail of the new anchor，and the maximum compressive strain is 309.5 ??. In an engineering project，the anchorage force of the new anchor cable was raised by 54.07%.
袁 坤1，张玉芳1，2，李 健1，2，万军利1，2. 预制内锚头新型锚索锚固性能研究及工程应用[J]. 岩石力学与工程学报, 2018, 37(1): 77-86.
YUAN Kun1，ZHANG Yufang1，2，LI Jian1，2，WAN Junli1，2. Performance and application of anchor with a new pressure-type of anchor cable with precast anchor head. , 2018, 37(1): 77-86.
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2018, Vol. 37 
