Double-layer extrusion type anchor plate for prestressed steel pipe cast-in-place pile and connection structure

Abstract

The invention belongs to the field of steel pipe cast-in-place piles, and discloses a double-layer extrusion type anchor plate for a prestressed steel pipe cast-in-place pile and a connection structure. The technical scheme of the connection structure is that upper structure reinforcement is anchored in an upper anchor plate and a lower anchor plate through a two-way extrusion cone to realize theconnection between an upper structure and the double-layer extrusion type anchor plate; prestressed reinforcement is anchored on the upper anchor plate, and the connection between the upper anchor plate and the lower anchor plate is realized through two rings of bolts on the inner side and the outer side. Through the implementation of the connection structure, the following beneficial effects areproduced: the structure is efficient and reasonable, complicated anchoring is not needed, and the upper structure, the double-layer extrusion type anchor plate and the prestressed steel pipe cast-in-place pile are connected into a stressed whole. The construction efficiency is high, welding is not needed, and the quality is controllable. Pouring holes are formed in the upper anchor plate and the lower anchor plate to facilitate grouting, and material consumption is reduced.

Description

technical field [0001] The invention relates to the field of cast-in-situ steel pipe piles, in particular to an anchor plate and connection structure for prestressed steel pipe cast-in-place piles. Background technique [0002] In recent years, my country's civil engineering construction has developed vigorously, and higher requirements have been put forward for the design of pile foundations. In order to improve the bearing capacity of the pile foundation under complex address conditions, reduce cracks and improve mechanical performance, prestressed steel pipe grouting piles are introduced. [0003] For prestressed steel pipe cast-in-place piles, how to effectively connect the pile foundation and the superstructure has always been a difficult problem for designers, especially when prestressed tendon anchoring needs to be considered at the same time. . The upper structure is various structures located on the upper part of the prestressed steel pipe pouring pile, such as ca...

AI Technical Summary

Problems solved by technology

This method generally requires a long anchorage length, and the force of the prestressed tendons is complicated.

At the same time, both of these two methods have the problems of easily causing crowded reinforcement and concrete pouring. The progress of the reinforcement project is slow and it is difficult to ensure the quality of the project.

Images