Mechanical connection method of highway bridge engineering pile foundation reinforcing steel bars

Abstract

The invention discloses a mechanical connection method of highway bridge engineering pile foundation reinforcing steel bars. The mechanical connection method includes the following steps that firstly,before the mechanical connection of the reinforcing steel bars is conducted, steel reinforcement cages comprising the main reinforcing steel bars and strengthening hoops are manufactured first; the strengthening hoops are annular hoops perpendicular to the axial direction of the main reinforcing steel bars, and fixing buckles matched with the main reinforcing steel bars are evenly arranged on theinner side circumference of the strengthening hoops; external threads are machined in the positions of tips of the main reinforcing steel bars; secondly, protection caps are arranged on the two tips,where the corresponding external threads have been machined, of each main reinforcing steel bar; thirdly, construction site connection is conducted, fixing rings matched with split type sleeves are arranged on the inner sides of the tips of the main reinforcing steel bars of the two steel reinforcement cages, and the tips of the main reinforcing steel bars of the two steel reinforcement cages areconnected in a butt joint manner; and fourthly, the split type sleeves are fixed through buckling of the split type sleeves and the external threads at the positions of the tips of the main reinforcing steel bars and through the fixing rings arranged in the third step in advance, and the connection method is high in connection speed, easy to operate, convenient to construct and wide in application range.

Description

technical field [0001] The invention relates to the field of construction engineering, and more specifically, the invention relates to a method for mechanically connecting steel bars of highway and bridge engineering pile foundations. Background technique [0002] When the existing highway and bridge engineering pile foundation steel bars are connected by mechanical connection methods, straight thread sleeves, tapered thread sleeves or extruded sleeves are generally used to connect. The thread is compatible with the thread on the inner wall of the sleeve. The two opposite steel bar ends are connected in the sleeve by screwing. Dozens of screwing actions can complete the connection, which is not suitable for the mechanical connection of a large number of steel bars in the pile foundation of highway bridge engineering in the vertical direction. It can be seen that the development of a connection speed is fast, the operation is simple, the construction is convenient, and the ap...

AI Technical Summary

Problems solved by technology

[0002] When the existing highway and bridge engineering pile foundation steel bars are connected by mechanical connection methods, straight thread sleeves, tapered thread sleeves or extruded sleeves are generally used to connect. The thread is compatible with the thread on the inner wall of the sleeve. The two opposite steel bar ends are connected in the sleeve by screwing. Dozens of screwing actions can complete the connection, which is not suitable for the mechanical connection of a large number of steel bars in the pile foundation of highway bridge engineering in the vertical direction. It can be seen that the development of a connection speed is fast, the operation is simple, the construction is convenient, and the application range is wide. The joint has high strength and stable structure, which meets the requirements of various technical regulations for steel bar connection, and is especially suitable for the mechanical connection method of pile foundation steel bars in highway bridge engineering where large quantities of steel bars are connected.

Images