Threading-free combined embedding anchoring device for wall lacing wire and construction method

Abstract

The invention provides a threading-free combined embedding anchoring device for a wall lacing wire and a construction method. The device comprises an anchoring head, external belt screw threads and a protective casing, wherein one end of the anchoring head is an expansion end, the other end is connected to the external belt screw threads, the anchoring head and the external belt screw threads form a conical bolt shape, and the protective casing is disposed outside the external belt screw threads; an axially extending duct is formed inside the external belt screw threads, the inner diameter of the duct is correspondingly fitted with the outer diameter of the wall lacing wire, an adjustment gap extending axially is formed in the external belt screw threads, the inner wall of the external belt screw threads is a pitted surface, threads are disposed on the outer wall of the external belt screw threads, and a nut is twisted on the outer wall of the external belt screw threads by the threads; and a fixation ring which expands outwards is disposed at an opening end of the casing. The device can be anchored with the wall lacing wire without installation of a drill hole; threading or head expansion does not need to be conducted for the wall lacing wire at a construction site; the embedding anchoring device is installed reliably; the spacing of the anchoring devices is consistent after removal of a template, and installation speed and quality of the wall lacing wire can be increased.

Description

technical field [0001] The invention belongs to the field of engineering secondary structures, and in particular relates to a pre-embedded composite anchoring device and a construction method for wire-free wall ties. Background technique [0002] The use of wall ties in construction projects has gone through a long development stage. In the past, the wall ties were mainly pre-embedded in the parts with secondary structures or welded after pre-embedding steel plates. Due to various reasons, they have been eliminated. There are two main ways to install masonry wall tension bars in the construction of masonry structures in construction projects at this stage: [0003] 1. Drilling and rebar planting method: that is, post-drilling and rebar planting technology is adopted. Since holes are drilled in concrete, the following problems are prone to occur: 1) The drilled holes are easily displaced due to the influence of the position of the steel bars in the wall or column; 2) The ash...

AI Technical Summary

Problems solved by technology

[0003] 1. Drilling and rebar planting method: that is, post-drilling and rebar planting technology is adopted. Since holes are drilled in concrete, the following problems are prone to occur: 1) The drilled holes are easily displaced due to the influence of the position of the steel bars in the wall or column; 2) The ash and slag in the drill hole cannot be cleaned thoroughly; 3) The colloid hardening time is not enough after the reinforcement is planted, and the wall reinforcement is bent and easy to loosen

The disadvantages of this method are: 1) the workload of the on-site wall lacing wire is huge; 2) the installation accuracy of the pre-embedded sleeve is high, if the installation position is not accurate, the position of the sleeve needs to be manually chiseled after concrete pouring, and the concrete structure will be damaged

The disadvantages of this method are: 1) Affected by the drilling, the anchorage force between the expansion bolt and the concrete is poor; 2) The post-drilling damages the concrete structure, and the structural steel bars are easily damaged during the drilling process

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