Anchor cable secondary tension anchorage device and anchor cable secondary tension device

Abstract

The invention provides an anchor cable secondary tension anchorage device and an anchor cable secondary tension device and relates to the field of building engineering instruments. The anchor cable secondary tension anchorage device comprises a tension disc having a first bearing surface and a second bearing surface opposite to each other; the first bearing surface is provided with a plurality offirst clamp holes that run through the first bearing surface and the second bearing surface; via hole area of each first clamp hole close to the first bearing surface is greater than that of the firstclamp hole close to the second bearing surface; the second bearing surface is provided with a plurality of second clamp holes that run through the second bearing surface and the first bearing surface; the via hole area of each second clamp hole close to the second bearing surface is greater than that of the second clamp hole close to the first bearing surface. Compared with the prior art, the anchor cable secondary tension anchorage device enables an anchor cable to be stably clamped when small length of the anchor cable is reserved, and enables the anchor cable to be re-tensioned.

Description

technical field [0001] The invention relates to the field of construction engineering equipment, in particular to an anchorage for secondary tensioning of anchor cables and a secondary tensioning device for anchor cables. Background technique [0002] With the rapid development of urban construction, super high-rise buildings have sprung up one after another, and various deep foundation pits are the basis for super high-rise building construction. At present, most of the deep foundation pit support structures adopt the method of fastening support piles and waist beam anchor cables, which effectively saves the construction space under the premise of ensuring the safe construction of deep foundation pits. [0003] In the actual construction process, the foundation pit is often left idle for a period of time due to reasons such as too long construction period or project stagnation. When the foundation pit is reused later, the anchor cables are always in a stretched state, and t...

AI Technical Summary

Problems solved by technology

[0003] In the actual construction process, the foundation pit is often left idle for a period of time due to reasons such as too long construction period or project stagnation. When the foundation pit is reused later, the anchor cables are always in a stretched state, and the original prestress The structure will change, the tensile force provided by the anchor cable will decrease, and even loosening will occur

At this time, it is necessary to re-stretch the anchor cable, and because the original reserved section of the anchor cable is relatively short, it is difficult to hold the anchor cable when the existing jack is used for clamping, and it is difficult to re-tension the anchor cable. pull

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