High-strength steel bar anchoring structure and method

Abstract

The invention discloses a high-strength steel bar anchoring structure and method. The high-strength steel bar anchoring structure comprises a high-strength steel bar and a steel casing, the steel casing sleeves the outer side of the anchoring end of the high-strength steel bar, a plurality of grooves are continuously formed in the inner side wall of the steel casing in the axial direction, and theanchoring end of the high-strength steel bar is matched with the multiple grooves; and a plurality of anchoring plates are horizontally arranged on the outer side wall of the steel casing in the radial direction. Through multi-point anchoring of the steel casing and the anchoring plates, the high-strength steel bar is stably anchored, anchoring binding force of the high-strength steel bar is greatly enhanced, and then the stability of a building is improved; and meanwhile, through heating extrusion, the high-strength steel bar, the steel casing and the anchoring plates are firmly bonded intoa whole, the anchoring strength of the high-strength steel bar is improved, meanwhile, bending of the high-strength steel bar and on-site manufacturing of a thread are avoided, and then the influenceof bending on subsequent concrete pouring and lowering of the bearing capability of the section of the high-strength steel bar are avoided.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a high-strength steel bar anchoring structure and an anchoring method. Background technique [0002] Rebar anchoring is an important means to ensure the bond strength of rebar in various concrete structural projects. In the existing construction field, the anchoring method of steel bars is mainly realized by means of hook anchorage, perforated threaded anchorage plate anchorage, welding anchorage and the like. [0003] With the emergence of high-strength steel bars, on the one hand, the yield strength of steel bars has been further improved, which requires further improvement of the bonding force between high-strength steel bars and concrete; The method cannot be applied to high-strength steel bars. Specifically, high-strength steel bars are not easy to bend, and thread production is difficult, and the quality of on-site thread production is poor, while welding...

AI Technical Summary

Problems solved by technology

[0003] With the emergence of high-strength steel bars, on the one hand, the yield strength of steel bars has been further improved, which requires further improvement of the bonding force between high-strength steel bars and concrete; The method cannot be applied to high-strength steel bars

Specifically, high-strength steel bars are not easy to bend, and thread fabrication is difficult, and the quality of on-site thread fabrication is poor, while welding damages the internal structure of high-strength steel bars, and there are initial defects at the joints, which reduce the bearing capacity of steel bars

Therefore, traditional reinforcement anchorage methods such as hook anchorage and welding anchorage will reduce the bearing capacity of high-strength steel bars and are not easy to implement. Although the anchorage method of perforated and threaded anchorage plates can avoid steel bar hooks, it needs to be placed at the end of the steel bar. On-site thread production requires a lot of work, and there is a risk of weakening the cross-section and reducing the bearing capacity during the thread production process, so the quality of the thread produced on site is poor and the strength cannot meet the requirements

[0004] There is a method to reduce the anchorage length by multi-point anchoring, but there is stress concentration in multi-point anchoring, which is prone to local damage

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