High-strength steel bar anchoring device and implementation method thereof

Abstract

The invention discloses a high-strength steel bar anchoring device and an implementation method thereof. The anchoring device comprises a first anchoring part, a second anchoring part and a high-strength steel bar which are sequentially arranged from outside to inside. The tip of an anchoring end of the high-strength steel bar is upset to form a pier head, the pier head end of the high-strength steel bar is sleeved by the first anchoring part, and the upper end of the first anchoring part is higher than the upper surface of the pier head; the high-strength steel bar located on the upper side of the pier head is sleeved by the second anchoring part, and the lower end of the second anchoring part is tightly attached to the upper surface of the pier head; and the upper end of the first anchoring part is detachably and fixedly connected with the lower end of the second anchoring part. Steel sleeves with different diameters are matched with anchoring plates with different diameters, so thatmulti-point matching anchoring of the high-strength steel bar in the longitudinal direction and the transverse direction is achieved, weak anchoring areas are avoided, and stable anchoring is achieved; and through the anchoring mode that the steel sleeve is combined with the pier head, the pier head is manufactured in advance, and the low anchoring efficiency caused by manufacturing the pier headon site is avoided.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a high-strength steel bar anchoring device and an implementation method thereof. 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, whi...

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] In the existing pier head type anchoring structure, it is necessary to make the pier head on site, which greatly affects the anchoring efficiency. At the same time, the quality of the pier head made on site is unstable, making the anchorage structure unstable

In addition, the existing methods of reducing the anchorage length through multi-point anchorage all have the problem of stress concentration, and are prone to local weak areas

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