Abstract
The torque-controlled expansion anchors, undercut anchors,bonded anchors and special inverted conical chemical anchors subjected to tension load, which including single anchor, two anchors, four anchors and eight anchors are tested. Failure mode and tension performance of anchor group are investigated, and test value and calculative value of ultimate load are compared. Experimental results show that some anchor group occur the concrete cone failure under tension load, and others occur steel failure under tension load. Test value and calculative value of ultimate load are compared, and the result meets well.
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