| 摘要 |
PURPOSE: A pack anchor with multistage expansion solution which has a spike, and a construction method using the same are provided to secure anchor force by inserting a spike into an inner side of a perforated hole. CONSTITUTION: A pack anchor(100) with multistage expansion solution is composed of a first expansion pack(10a), a second expansion pack(10b), fixing packers(20), a fixing member(31), an anchor body, and injection hoses(40). The first and second expansion packs accept grout, and fix multiple spikes(11) by inner and outer fixing plates(13,14) and inner and outer stoppers(12,15). Nozzle holes(11a) are formed in the spikes in the second expansion pack, and spray the grout. The fixing packers connect and fix the first and second expansion packs. Expansion steel wires(200) are fixed to the fixing member. A protecting cap(34) is coupled to the anchor body. The injection hose injects the grout inside the first and second expansion pack. The injection hoses installed inside the second expansion pack form a pocket with an expansion agent and a steel fiber, and fastened with the pocket to form an expansion anchor. |
