Rigid connection method for prestressed concrete pile end plates

Abstract

A rigid connection method for prestressed concrete pile end plates includes the steps: (1) manufacturing the prestressed concrete pile end plates, manufacturing anti-pulling flanges at the edges of the upper surfaces of the end plates and forming anti-shearing semicircular holes or trapezoidal grooves in the edges of the lower surfaces of the end plates; (2) aligning the upper concrete pile end plate and the lower concrete pile end plate on a construction site, closing the semicircular holes or the trapezoidal grooves of the upper end plate and the lower end plate to form circular or hexagonal anti-shearing holes, placing cylindrical steel parts or hexagonal steel parts matched in size into the anti-shearing holes, and fastening steel fasteners on the flanges of the upper end plate and the lower end plate to rigidly connect the upper concrete pile end plate and the lower concrete pile end plate. By the rigid connection method, machining cost is greatly reduced, end plate machining speed and quality are improved, and construction is accelerated.

Description

technical field [0001] The invention relates to a pile foundation in the construction field, in particular to a rigid connection method for a prestressed concrete pile end plate. Background technique [0002] At present, most of the connections of prestressed concrete pile end plates are in the form of welding. According to the requirements of the code, the pile must be stopped for 8 minutes after welding. However, the construction team does not follow the regulations in order to rush the progress. The end plate is quenched to produce cracks, which reduces the welding strength, and there will be great hidden dangers in case of earthquakes or strong storms. There are also a very small number of end plates connected in the form of connecting rods or spring locks, but these two connection methods are all free-joint connections, which are neither shock-resistant nor shear-resistant. Therefore, the chief engineers of the Design Institute are under great pressure, especially the...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the connections of prestressed concrete pile end plates are in the form of welding. According to the requirements of the code, the pile must be stopped for 8 minutes after welding. However, the construction team does not follow the regulations in order to rush the progress. The end plate is quenched to produce cracks, which reduces the welding strength. When there is an earthquake or a strong storm, there will be great hidden dangers.

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