2results about How to "Facilitate standardized construction" patented technology

The utility model relates to an inhaul cable dismantling device, in particular to a device for dismantling a single clamping piece group anchor type steel strand inhaul cable, which comprises two sets of clamping devices, a tool nut, a tool pull rod and a jack. The two sets of clamping devices are respectively clamped on a to-be-replaced steel strand on a bridge floor, two ends of the tool pull rod respectively penetrate through the clamping devices, one end is connected with the tool nut, and the other end is connected with the tool nut after being provided with the jack; the clamping device comprises two Haver type clamping plates, a connecting screw rod and a connecting nut; the two Haver type clamping plates are connected together by the connecting screw rod through the connecting nut; the large-end opening of the conical anchor hole faces the inner side of the clamping device, and a tool clamping piece is installed between the conical anchor hole and the steel strand to be replaced. According to the utility model, the stress release section of the steel strand to be replaced is released on the bridge floor, the problems of high difficulty in overall unloading of cable force, difficulty in counteracting the tension elongation of the stay cable and insufficient operation space in the tower can be solved, and the device has the characteristics of low construction cost, high safety performance and the like, and is easy to popularize and apply.

The application discloses a steel strand inclined cable intermediate tensioning and dismantling method, which adopts a method of tensioning and dismantling steel strands one by one to realize cable force tensioning of the whole cable; one steel strand to be dismantled is divided into an upper segment L1, a middle segment L2 and a lower segment L3 by two sets of clamping devices; two tool steel strands are correspondingly passed through left and right holes of the two clamping devices and anchored by clamping pieces; the middle segment L2 of the steel strand to be dismantled between the two clamping devices is gradually loosened and cut by a jack tensioning; the upper segment L1 and the lower segment L3 of the steel strand to be dismantled outside the clamping devices are loosened, and a crane hoists away the upper and lower steel strand cable bodies respectively. The application solves technical problems of the prior art, such as insufficient length of old steel strands in long-span cable-stayed bridge steel strand cable replacement construction, high safety risk of high-altitude tower operation, great construction difficulty and low economic applicability.