| 摘要 |
A construction method of a wedge type anchor without a packer is provided to prevent an anchor head, a case, and wedge wings from being withdrawing from a hole by causing an anchor piece to press the inner wall of a hole. A wedge types anchor without a packer comprises an anchor head(10), a tapered case(20), a plurality of tension members(30), a plurality of wedge wings(40), more than one anchor piece(50), and a band(52). The anchor head is inserted a hole. The tapered case is fixed to the rear part of the anchor head and has a diameter which gets wider toward the anchor head. The tension member is fixed to the anchor head at one end after passing through the case, and connects with a tension tool on the ground at the other end. The wedge wings are arranged around the outer peripheral surface of the case and expand as the tension member receives tension to press the inner wall of the hole. One end of the anchor piece is pivotable at the end of the wedge, and the other is supported by an elastic member(51). The anchor piece presses the inner wall of the hole through the elastic member, thereby preventing the wedge wing from sliding out of the hole. The band holds the anchor piece to the wedge wing and cuts off before the tension member receives tension so that the anchor piece protrudes toward the inner wall of the hole. |
